0 Most Widely Accepted and Trusted ICC-ES Evaluation Report ICC-ES 000 (800) 423-6587 (562) 699-0543 www.icc-es.org ESR-008 Reissued 04/207 This report is subject to renewal 04/208. DIVISION: 03 00 00 CONCRETE SECTION: 03 5 9 CAST-IN CONCRETE ANCHORS SECTION: 03 6 00 CONCRETE ANCHORS REPORT HOLDER: HALFEN GMBH LIEBIGSTRASSE 4 40764 LANGENFELD-RICHRATH GERMANY EVALUATION SUBJECT: HALFEN HTA ANCHOR CHANNELS AND HS CHANNEL BOLTS Look for the trusted marks of Conformity! 204 Recipient of Prestigious Western States Seismic Policy Council (WSSPC) Award in Excellence A Subsidiary of ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 207 ICC Evaluation Service, LLC. All rights reserved.
ICC-ES Evaluation Report ESR-008 Reissued April 207 Revised December 207 This report is subject to renewal April 208. www.icc-es.org (800) 423-6587 (562) 699-0543 A Subsidiary of the International Code Council DIVISION: 03 00 00 CONCRETE Section: 03 5 9 Cast-In Concrete Anchors Section: 03 6 00 Concrete Anchors 92 of the 2009 and 2006 IBC. The anchor channels may also be used an engineered design is submitted in accordance with Section R30..3 of the IRC. REPORT HOLDER: HALFEN GMBH LIEBIGSTRASSE 4 40764 LANGENFELD-RICHRATH GERMANY www.halfenusa.com www.halfen.de EVALUATION SUBJECT: HALFEN HTA ANCHOR CHANNELS AND HS CHANNEL BOLTS.0 EVALUATION SCOPE Compliance with the following codes: 205, 202, 2009 and 2006 International Building Code (IBC) 205, 202, 2009 and 2006 International Residential Code (IRC) 203 Abu Dhabi International Building Code (ADIBC) The ADIBC is based on the 2009 IBC code sections referenced in this report are the same sections in the ADIBC. Properties evaluated: Structural 2.0 USES HALFEN HTA anchor channels and HALFEN HS channel bolts are used to resist static, wind, and seismic (IBC Seismic Design Categories A and B) tension loads (N ua) and shear loads perpendicular to the longitudinal channel axis (V ua,y), or any combination of these loads (as illustrated in Figure ) applied at any location between the outermost anchors of the anchor channel. The use is limited to cracked or uncracked normal-weight concrete having a specified compressive strength, f c of 2,500 psi to 0,000 psi (7.2 MPa to 69.0 MPa) [minimum of 24 MPa is required under ADIBC Appendix L, Section 5..]. The anchor channels are an alternative to anchors described in Section 90.3 of the 205 IBC, Sections 908 and 909 of the 202 IBC and Sections 9 and tension load: z-direction (in direction of anchor) shear load: y-direction (perpendicular to longitudinal axis of channel) FIGURE LOAD DIRECTIONS 3.0 DESCRIPTION 3. Product information: The HTA anchor channels consist of a C-shaped steel channel profile with round headed anchors (HTA 28/5, 38/7, 40/22 and 50/30) or I-shaped steel anchors (HTA 28/5, 38/7, 40/22, 50/30, 52/34, 55/42 and 72/48). Round headed anchors are forged to the channel back. I-shaped anchors are welded to the channel back (as illustrated in Figure 6 of this report). The maximum number of anchors per channel is not limited. The HALFEN ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 207 ICC Evaluation Service, LLC. All rights reserved. Page of 22
ESR-008 Most Widely Accepted and Trusted Page 2 of 22 HTA anchor channels are made of carbon steel channel profiles, or stainless steel (HTA 28/5 and 38/7 only) channel profiles. The appropriate channel bolts are placed in the anchor channel. The anchor channels are shown in Figure 5 of this report. The available channel bolts feature either a hammer-head or a hook-head and are shown in Figure 7. Installation information and parameters are shown in Tables 0 through 2 of this report. The combination of the HALFEN HTA anchor channels and the corresponding HS channel bolts covered by this report are described in Table 2 of this report. 3.2 Material information: Steel specifications for the channel profiles, anchors and channel bolts are given in Table 9 of this report. 3.3 Concrete: Normal-weight concrete shall comply with Sections 903 and 905 of the IBC. 4.0 DESIGN AND INSTALLATION 4. General: The design strength of anchor channels under the 205, 202, 2009, and 2006 IBC, must be determined in accordance with ACI 38-4 chapter 7, ACI 38-, -08, and -05 Appendix D and this report. 4.. Determination of forces acting on anchor channel: Anchor channels shall be designed for critical effects of factored loads as determined by elastic analysis taking into account the elastic support by anchors and the partial restraint of the channel ends by concrete compression stresses. As an alternative, the triangular load distribution method in accordance with Section 4..2 through 4..4 to calculate the tension and shear loads on anchors shall be permitted. 4..2 Tension loads: The tension loads, N a ua,i, on an anchor due to a tension load, N ua, acting on the channel shall be computed in accordance with Eq.(D-0.a). An example for the calculation of the tension loads acting on the anchors is given in Figure 2. N a ua,i = k A i N ua (D-0.a) A' i = ordinate at the position of the anchor i assuming a triangle with the unit height at the position of load N ua and the base length 2 l in with l in determined in accordance with Eq. (D-0.c). An example is provided in Figure 2. k = / A' i (D-0.b) 0. 05 y = 4. 93 ( Ι ) s s, in. (D-0.c) in 0. 05 y = 3 ( Ι ) s s, mm (D-0.c) in s = anchor spacing, in. (mm) N ua = factored tension load on anchor channel, lbf (N) Ι y = the moment of inertia of the channel shall be taken from Table of this report. If several tension loads are simultaneously acting on the channel, a linear superimposition of the anchor forces for all loads shall be assumed. If the exact position of the load on the channel is not known, the most unfavorable loading position shall be assumed for each failure mode (e.g. load acting over an anchor for the case of failure of an anchor by steel rupture or pull-out and load acting between anchors in the case of bending failure of the channel). ( -s-e) ' in 0. 25s A 2 = a a = = N ua, = Nua, 5 = 0 in in 6 ' ( in-e) 25. s 5 a A3 = = = Nua, = 2 Nua = 2 Nua in in 6 6 3 9 ' ( in-s + e) 0. 75s a A4 = = = Nua, = 5 2 Nua = 5 3 Nua in in 2 6 3 9 2 a k = = N ' ' ' ua, = 2 Nua = 4 Nua A + A + A 3 2 3 3 2 3 4 FIGURE 2 EXAMPLE FOR THE CALCULATION OF ANCHOR FORCES IN ACCORDANCE WITH THE TRIANGULAR LOAD DISTRIBUTION METHOD FOR AN ANCHOR CHANNEL WITH FIVE ANCHORS. THE INFLUENCE LENGTH IS ASSUMED AS l in =.5s 4..3 Bending moment: The bending moment M u,flex on the channel due to tension loads acting on the channel shall be computed assuming a simply supported single span beam with a span length equal to the anchor spacing. 4..4 Shear loads: The shear load V a ua,y,i on an anchor due to a shear load V ua,y acting on the channel perpendicular to its longitudinal axis shall be computed in accordance with Section 4..2 replacing N ua in Eq. (D-0.a) by V ua,y. 4..5 Forces related to anchor reinforcement: If tension loads are acting on the anchor channel, the factored tension forces of the anchor reinforcement for one anchor shall be computed for the factored tension load, N a ua,i, of the anchor assuming a strut- and-tie model. If a shear load V ua,y is acting on the anchor channel, the resultant factored tension force of the anchor reinforcement N ua,re, shall be computed by Eq.(D-0.d). N ua,re = V ua,y ((e s / z)+), lbf (N) (as illustrated in Figure 3): (D-0.d) e s = distance between reinforcement and shear force acting on the fixture, in. (mm) z z = internal lever arm of the concrete member, in. (mm) = 0.85 h' = 0.85 (h h ch 0.5 d a) 2h min 2c ef a h' see Figure 3
ESR-008 Most Widely Accepted and Trusted Page 3 of 22 FIGURE 3 ANCHOR REINFORCEMENT TO RESIST SHEAR LOADS 4.2 Strength design: 4.2. General: The design strength of anchor channels under the 205 IBC as well as Section R30..3 of the 205 IRC shall be determined in accordance with ACI 38-4 Chapter 7 and this report. The design strength of anchor channels under the 202 IBC, as well as Section R30..3 of the 202 IRC, shall be determined in accordance with ACI 38- Appendix D and this report. The design strength of anchor channels under the 2009 IBC, as well as Section R30..3 of the 2009 IRC, shall be determined in accordance with ACI 38-08 Appendix D and this report. The design strength of anchor channels under the 2006 IBC, as well as Section R30..3 of the 2006 IRC shall be determined in accordance with ACI 38-05 Appendix D and this report. Design parameters in this report and references to ACI 38 are based on the 205 IBC (ACI 38-4) and the 202 IBC (ACI 38-) unless noted otherwise in Section 4.2. through 4.2.5 of this report. The strength design shall comply with ACI 38-4 7.3. or ACI 38- D.4., as applicable, except as required in ACI 38-4 7.2.3 or ACI 38- D.3.3, as applicable. Design parameters are provided in Tables through 9 of this report. Strength reduction factors, φ, as given in ACI 38-4 7.3.3, 38- D.4.3 and the tables of this report shall be used for load combinations calculated in accordance with Section 605.2. of the IBC, Section 5.3 of ACI 38-4, or Section 9.2 of ACI 38-, as applicable. Strength reduction factors, φ, as given in ACI 38- D.4.4 and in parentheses in the tables of this report shall be used for load combinations calculated in accordance with Section ACI 38- Appendix C. In Eq. (D-), and (D-2) (ACI 38-05,-08), Table D.4.. (ACI 38-) or Table 7.3.. (ACI 38-4) φn n and φv n,y are the lowest design strengths determined from all appropriate failure modes. φn n is the lowest design strength in tension of an anchor channel determined from consideration of φn sa, φn sc, φn sl, φn ss, φm s,flex, φn cb, (anchor channels without anchor reinforcement to take up tension loads) or φn ca (anchor channels with anchor reinforcement to take up tension loads), φn pn and φn sb. φv n,y is the lowest design strength in shear perpendicular to the axis of an anchor channel as determined from φv sa,y, φv sc,y, φv ss, φv ss,m, φv sl,y, φv cb,y (anchor channels without anchor reinforcement to take up shear loads perpendicular to the channel axis), or φv ca,y (anchor channels with anchor reinforcement to take up shear loads perpendicular to the channel axis) and φv cp,y. The design strength for all anchors of an anchor channel shall be determined. 4.2.2 Tension loads: 4.2.2. General: Following verifications are required: a) Steel failure: Steel strength of anchor, strength of connection between anchor and channel, strength for local failure of channel lip, strength of channel bolt, bending strength of channel, see Section 4.2.2.2. b) Concrete breakout strength of anchor in tension, see Section 4.2.2.3. c) Pullout strength of anchor channel in tension, see Section 4.2.2.4. d) Concrete side-face blow-out strength of anchor channels in tension, see Section 4.2.2.5. 4.2.2.2 Steel strength in tension: The nominal strength, N sa, of a single anchor shall be taken from Table 3 of this report. The nominal strength, N sc, of the connection between anchor and channel profile shall be taken from Table 3 of this report. The nominal strength of the channel lips to take up tension loads transmitted by a channel bolt, N sl, shall be taken from Table 3 of this report. This value is valid only if the center-to-center distance between the channel bolts under consideration and adjacent channel bolts, s chb, is at least 2b ch. If this requirement is not met, then the value N sl given in Table 3 shall be reduced by the factor: + 2 2 n+ b schb,i Nua,i b i= 2 bch Nua, (D-3.a) The center-to-center spacing between channel bolts shall not be less than 3-times the bolt diameter, d s. b ch = channel width, taken from Table, in. (mm) The nominal strength of the channel bolt, N ss, shall be taken from Table 7 of this report. The nominal bending strength of the anchor channel, M s,flex, shall be taken from Table 3 of this report. 4.2.2.3 Concrete breakout strength in tension: The nominal concrete breakout strength, N cb, of a single anchor in tension of an anchor channel shall be determined in accordance with Eq. (D-4.a) N cb = N b ψ s,n ψ ed,n ψ co,n ψ c,n ψ cp,n, lbf (N) (D-4.a) The basic concrete breakout strength of a single anchor in tension in cracked concrete, N b, shall be determined in accordance with Eq. (D-7.a). N b = 24 λ α ch, N (f c) 0.5 h.5 ef, lbf (D-7.a) N b = 0 λ α ch,n (f c) 0.5 h ef.5, N (D-7.a) λ = (normal-weight concrete) α ch, N = (h ef / 7.) 0.5.0, (inch-pound units) (D-7.b) α ch, N = (h ef / 80) 0.5.0, (SI-units) (D-7.b) The modification factor to account for the influence of location and loading of adjacent anchors, ψ s,n, shall be computed in accordance with Eq. (D-9.a)
ESR-008 Most Widely Accepted and Trusted Page 4 of 22 ψ s,n = (D-9.a) n + 5. a s + i N ua,i a i = 2 scr,n Nua, (as illustrated in Figure 4): s i = distance between the anchor under consideration and adjacent anchor, in. (mm) s cr,n s cr,n = 2 (2.8 (.3 h ef / 7.)) h ef 3 h ef, in. s cr,n = 2 (2.8 (.3 h ef / 80)) h ef 3 h ef, mm (D-9.b) (D-9.b) N a ua,i = factored tension load of an influencing anchor, lbf (N) N a ua, = factored tension load of the anchor under consideration, lbf (N) n = number of anchors within a distance s cr,n to both sides of the anchor under consideration at an edge in a narrow member FIGURE 5 ANCHOR CHANNELS WITH EDGE(S) The modification factor for corner effect for anchors loaded in tension (as illustrated in Figures 6a and b), ψ co,n, shall be computed in accordance with Eq. (D-.b) or (D-.c) If c a2 c cr,n then ψ co,n =.0 (D-.b) = anchor under consideration, 2 to 4 = influencing anchors FIGURE 4 EXAMPLE OF ANCHOR CHANNEL WITH NON- UNIFORM ANCHOR TENSION FORCES If c a2 c cr,n then ψ co,n = (c a2 / c cr,n) 0.5.0 (D-.c) c a2 = distance of the anchor under consideration to the corner (see Figure 6 a, b, d) If an anchor is influenced by two corners (as illustrated in Figure 6c), the factor ψ co,n shall be computed for each of the values c a2, and c a2,2 and the product of the factors, ψ co,n, shall be inserted in Eq. (D-4.a). The modification factor for edge effect of anchors loaded in tension, ψ ed,n, shall be computed in accordance with Eq. (D-0.a) or (D-0.b). If c a c cr,n then ψ ed,n =.0 If c a < c cr,n then ψ ed,n = (c a / c cr,n) 0.5.0 (D-0.a) (D-0.b) c cr,n = 0.5 s cr,n = (2.8 (.3 h ef / 7.)) h ef.5 h ef, in. (D-.a) c cr,n = 0.5 s cr,n = (2.8 (.3 h ef / 80)) h ef.5 h ef, mm (D-.a) If anchor channels are located in a narrow concrete member with multiple edge distances c a, and c a,2 (as shown in Figure 5b), the minimum value of c a, and c a,2 shall be inserted in Eq. (D-0.b). FIGURE 6 ANCHOR CHANNEL AT A CORNER OF A CONCRETE MEMBER
ESR-008 Most Widely Accepted and Trusted Page 5 of 22 For anchor channels located in a region of a concrete member analysis indicates no cracking at service load levels, the following modification factor shall be permitted: ψ c,n =.25. Where analysis indicates cracking at service load levels, ψ c,n shall be taken as.0. The cracking in the concrete shall be controlled by flexural reinforcement distributed in accordance with ACI 38-, -08, -05 Section 0.6.4, or with ACI 38-4 Section 24.3.2 and 24.3.3, or equivalent crack control shall be provided by confining reinforcement. The modification factor for anchor channels designed for uncracked concrete without supplementary reinforcement to control splitting, ψ cp,n, shall be computed in accordance with Eq. (D-2.a) or (D-3.a). The critical edge distance, c ac, shall be taken from Table 4 of this report. If c a,min c ac then ψ cp,n =.0 (D-2.a) If c a,min c ac then ψ cp,n = c a,min / c ac (D-3.a) by ψ cp,n as determined in accordance with Eq. (D-3.a) shall not be taken less than c cr,n / c ac with c cr,n taken from Eq. (D-.a). For all other cases, ψ cp,n shall be taken as.0. Where anchor reinforcement is developed in accordance with ACI 38- Chapter 2 or ACI 38-4 Chapter 25 on both sides of the breakout surface for an anchor of an anchor channel, the design strength of the anchor reinforcement, φn ca, shall be permitted to be used instead of the concrete breakout strength, φn cb, in determining φn n. The anchor reinforcement for one anchor shall be designed for the tension force, N a ua on this anchor using a strut-and-tie model. The provisions in Figure 7 shall be taken into account when sizing and detailing the anchor reinforcement. Anchor reinforcement shall consist of stirrups made from deformed reinforcing bars with a maximum diameter of 5 / 8 in. (No. 5 bar) (6 mm). A strength reduction factor φ of 0.75 shall be used in the design of the anchor reinforcement. For anchor channels located parallel to the edge of a concrete member or in a narrow concrete member, the plane of the anchor reinforcement shall be arranged perpendicular to the longitudinal axis of the channel (as shown in Figure 7 a, b). b) Anchor channel in a narrow member FIGURE 7 ARRANGEMENT OF ANCHOR REINFORCEMENT FOR ANCHOR CHANNELS LOADED BY TENSION LOAD 4.2.2.4 Pullout strength in tension: For anchors of anchor channels, the pullout strength N pn shall be computed in accordance with D.5.3., D.5.3.4 and D.5.3.6 of ACI 38-, -08, -05, or Sections 7.4.3., 7.4.3.4, 7.4.3.6 of ACI 38-4. 4.2.2.5 Concrete side-face blowout strength in tension: For anchor channels with deep embedment close to an edge (h ef > 2.0 c a) the nominal side-face blowout strength, N sb, of a single anchor shall be computed in accordance with Eq. (D-7.a) N sb = N 0 sb ψ s,nb ψ g,nb ψ co,nb ψ h,nb ψ c,nb, lbf (N) (D-7.a) The basic nominal strength of a single anchor without influence of neighboring anchors, corner or member thickness effects in cracked concrete, N 0 sb, shall be computed in accordance with Eq. (D-7.b). 0 Nsb = 28 λ ca Abrg fc ', lbf (D-7.b) N 0 sb = 0.5 λ ca Abrg fc ', N (D-7.b) The modification factor accounting for the distance to and loading of neighboring anchors, ψ s,nb, shall be computed in accordance with Eq. (D-9.a), however s cr,n, shall be replaced by s cr,nb, which shall be computed in accordance with Eq. (D-7.c). S cr,nb = 4 c a, in. (mm) (D-7.c) The modification factor to account for influence of the bearing area of neighboring anchors, ψ g,nb, shall be computed in accordance with Eq. (D-7.d) or Eq. (D-7.e). If s 4 c a then ψ g,nb =.0 (D-7.d) a) Anchor channel parallel to an edge If s < 4 c a s then ψ g, Nb = n + ( n ) 4 c. 0 (D-7.e) : n = number of tensioned anchors in a row parallel to the edge The modification factor to account for influence of corner effects, ψ co,nb, shall be computed in accordance with Eq. (D-7.f). a
ESR-008 Most Widely Accepted and Trusted Page 6 of 22 0.5 c a2 ψ co, Nb =.0 (D-7.f) ccr, Nb : c a2 = corner distance of the anchor, for which the resistance is computed, in. (mm) c cr,nb = 2 c a, in. (mm) (D-7.g) If an anchor is influenced by two corners (c a2 < 2 c a), then the factor ψ co,nb shall be computed for c a2, and c a2,2 and the product of the factors shall be inserted in Eq. (D- 7.a). The modification factor to account for the influence of the member thickness, ψ h,nb, shall be computed in accordance with Eq. (D-7.h) or Eq. (D-7.i). If f > 2 c a then ψ h,nb =.0 (D-7.h) If f 2 c a then ψ h, Nb h + f 2 c + f = (D-7.i) ef a 4 ca 4 ca : f = distance between the anchor head and the surface of the concrete member opposite to the anchor channel (as illustrated in Figure 8) in. (mm) FIGURE 8 ANCHOR CHANNEL AT THE EDGE OF A THIN CONCRETE MEMBER The modification factor to account for the influence of uncracked concrete, ψ c,nb, shall be in accordance with Section 4.2.2.3 of this report. For anchor channels located perpendicular to the edge and loaded uniformly, verification is only required for the anchor closest to the edge. 4.2.3 Shear loads: 4.2.3. General: Following verifications are required: a) Steel failure: Strength of channel bolt, strength for local failure of channel lip, strength of connection between anchor and channel profile and strength of anchor, see Section 4.2.3.2 b) Concrete edge breakout strength of anchor channel in shear, see Section 4.2.3.3 c) Concrete pryout strength of anchor channel in shear, see Section 4.2.3.4 4.2.3.2 Steel strength of anchor channels in shear perpendicular to its longitudinal axis: For anchor channels, the nominal steel shear strength shall be determined as follows: The nominal strength of a channel bolt in shear, V ss, must be taken from Table 8 of this report. If the fixture is not clamped against the concrete but secured to the channel bolt at a distance from the concrete surface (e.g. by double nuts), the nominal strength of a channel bolt in shear, V ss,m, shall be computed in accordance with Eq. (D-20.b). V ss,m = (α M M ss) / l, lbf (N) α M M (D-20.b) = factor to take account of restraint of the fixture =.0 if the fixture can rotate freely (no restraint) = 2.0 if the fixture cannot rotate (full restraint) 0 N ua M ss, lbf-in. (Nm) (D-20.c) φn ss = ss M 0 ss = nominal flexural strength of channel bolt. It shall be taken from Table 8 of this report l a 0.5 N sl a 0.5 N ss a = lever arm, in. (mm) = internal lever arm, in. (mm) The nominal strength of the channel lips to take up shear loads perpendicular to the channel axis transmitted by a channel bolt, V sl,y, shall be taken from Table 5 of this report. The nominal strength of one anchor, V sa,y, to take up shear loads perpendicular to the channel axis shall be taken from Table 5 of this report. The nominal strength of the connection between one anchor and the anchor channel, V sc,y, to take up shear loads perpendicular to the channel axis shall be taken from Table 5 of this report. 4.2.3.3 Concrete breakout strength of an anchor channel in shear perpendicular to its longitudinal axis: The nominal concrete breakout strength, V cb,y, in shear perpendicular to the channel axis of a single anchor of an anchor channel in cracked concrete shall be computed as follows: a) For a shear force perpendicular to the edge, by Eq. (D-2.a) V cb,y = V b ψ s,v ψ co,v ψ c,v ψ h,v, lbf (N) (D-2.a) b) For a shear force parallel to an edge (as shown in Figure 9), V cb,y, shall be permitted to be 2.5 times the value of the shear force determined from Eq. (D-2.a) with the shear force assumed to act perpendicular to the edge.
ESR-008 Most Widely Accepted and Trusted Page 7 of 22 The modification factor for corner effect for an anchor loaded in shear perpendicular to the channel axis (as shown in Figure a), ψ co,v, shall be computed in accordance with Eq. (D-24.d) or (D-24.e). If c a2 c cr,v then ψ co,v =.0 (D-24.d) FIGURE 9 ANCHOR CHANNEL ARRANGED PERPENDICULAR TO THE EDGE AND LOADED PARALLEL TO THE EDGE The basic concrete breakout strength in shear perpendicular to the channel axis of a single anchor of an anchor channel in cracked concrete, V b, shall be computed in accordance with Eq. (D-24.a). V b = λ α ch,v (f c) 0.5 c 4/3 a, lbf (N) (D-24.a) λ = (normal-weight concrete) α ch,v = shall be taken from Table 6 of this report. f' c = the lesser of the specified concrete compressive strength and 8,500 psi (58.6 MPa) The modification factor to account for the influence of location and loading of adjacent anchors, ψ s,v shall be computed in accordance with Eq. (D-24.b). ψ = (D-24.b) s,v n + 5. a s V + i ua, y,i a i = 2 scr,v Vua, y, (as illustrated in Figure 0): s i = distance between the anchor under consideration and the adjacent anchor, in. (mm) s cr,v s cr,v = 4c a + 2b ch, in. (mm) (D-24.c) V a ua,y,i = factored shear load of an influencing anchor, lbf (N), V a ua,y, = factored shear load of the anchor under consideration, lbf (N), n = number of anchors within a distance s cr,v to both sides of the anchor under consideration FIGURE 0 EXAMPLE OF AN ANCHOR CHANNEL WITH DIFFERENT ANCHOR SHEAR FORCES If c a2 < c cr,v then ψ co,v = (c a2 / c cr,v) 0.5 (D-24.e) c cr,v = 2c a + b ch, in. (mm) (D-24.f) If an anchor is influenced by two corners (as shown in Figure b), then the factor ψ co,v shall be computed for each corner in accordance with Eq. (D-24.d) or (D-24.e) and the product of the values of ψ co,v shall be inserted in Eq. (D-2.a). FIGURE EXAMPLE OF AN ANCHOR CHANNEL LOADED IN SHEAR WITH ANCHORS a) influenced by one corner b) influenced by two corners For anchor channels located in a region of a concrete member analysis indicates no cracking at service load levels, the following modification factor shall be permitted ψ c,v =.4. For anchor channels located in a region of a concrete member analysis indicates cracking at service load levels, the following modifications shall be permitted: ψ c,v =.0 for anchor channels in cracked concrete with no supplementary reinforcement ψ c,v =.2 for anchor channels in cracked concrete with edge reinforcement of a No. 4 bar (2.7 mm) or greater between the anchor channel and the edge ψ c,v =.4 for anchor channels in cracked concrete containing edge reinforcement with a diameter of / 2 inch (2.7 mm) or greater (No. 4 bar or greater) between the anchor channel and the edge, and with the edge reinforcement enclosed within stirrups with a diameter of / 2 inch (2.7 mm) or greater (No. 4 bar or greater) spaced at 4 inches (00 mm) maximum. The modification factor for anchor channels located in a concrete member with h < h cr,v, ψ h,v (an example is given in Figure 2), shall be computed in accordance with Eq. (D-29.a).
ESR-008 Most Widely Accepted and Trusted Page 8 of 22 ψ h,v = (h / h cr,v) /2.0 h cr,v = 2c a + 2h ch, in. (mm) (D-29.a) (D-29.b) FIGURE 2 EXAMPLE OF AN ANCHOR CHANNEL IN A MEMBER WITH A THICKNESS h < h cr,v Where an anchor channel is located in a narrow member (c a2,max < c cr,v) with a thickness h < h cr,v (see Figure 3), the edge distance c a in Eq. (D-24.a), (D-24.c), (D-24.f) and (D-29.b) shall not exceed the value c a,red determined in accordance with Eq. (D-29.c). ca,max bch h 2hch c a,red = max ;, in. (mm) (D-29.c) 2 2 c a2,max is the largest of the edge distances perpendicular to the longitudinal axis of the channel. For this example, the value of c a,red is obtained by moving the failure surface forward until it intersects the corner as shown. FIGURE 3 EXAMPLE OF AN ANCHOR CHANNEL INFLUENCED BY TWO CORNERS AND MEMBER THICKNESS (IN THIS EXAMPLE c a2,2 IS DECISIVE FOR THE DETERMINATION OF c a,red) For anchor channels with b ch greater than. in. (28 mm) and h ch greater than 0.6 in. (5 mm) arranged parallel to the edge and loaded by a shear load perpendicular to the edge and anchor reinforcement developed in accordance with ACI 38- Chapter 2 or ACI 38-4 Chapter 25 on both sides of the concrete surface, the design strength of the anchor reinforcement, φv ca,y, shall be permitted to be used instead of the concrete breakout strength, φv cb,y, in determining φv n,y. A strength reduction factor φ of 0.75 shall be used in the design of the anchor reinforcement. The strength of the anchor reinforcement assumed in design shall not exceed the value in accordance with Eq. (D-29.d). Only anchor reinforcement that complies with Figure 4 shall be assumed as effective. The maximum strength of the anchor reinforcement V ca,y,max of a single anchor of an anchor channel shall be computed in accordance with Eq. (D-29.d). V ca,y,max = 2.85 / (c a) 0.2 V cb,y, lbf V ca,y,max = 4.20 / (c a) 0.2 V cb,y, N (D-29.d) (D-29.d) V cb,y is determined in accordance with Eq. (D-2.a). Anchor reinforcement shall consist of stirrups made from deformed reinforcing steel bars with a maximum diameter of 5 / 8 in. (6 mm) (No. 5 bar) and straight edge reinforcement with a diameter not smaller than the diameter of the stirrups (as shown in Figure 4). Only one bar at both sides of each anchor shall be assumed as effective. The distance of this bar from the anchor shall not exceed 0.5c a and the anchorage length in the breakout body shall be not less than 4 times the bar diameter. The distance between stirrups shall not exceed the smaller of anchor spacing or 6 in. (52 mm). FIGURE 4 REQUIREMENTS FOR DETAILING OF ANCHOR REINFORCEMENT OF ANCHOR CHANNELS The anchor reinforcement of an anchor channel shall be designed for the highest anchor load, V a ua,y of all anchors but at least for the highest individual shear load, V b ua,y acting on the channel. This anchor reinforcement shall be arranged at all anchors of an anchor channel. 4.2.3.4 Concrete pryout strength of anchor channels in shear perpendicular to the channel axis: The nominal pryout strength, V cp, in shear of a single anchor of an anchor channel without anchor reinforcement shall be computed in accordance with Eq. (D-30.a). V cp = V cp,y = k cp N cb, lbf (N) (D-30.a) k cp = factor taken from Table 6 of this report N cb = nominal concrete breakout strength of the anchor under consideration, lbf (N), determined in accordance with 4.2.2.3; however in the determination of the modification factor ψ s,n, the values N a ua, and N a ua,i in Eq. (D-9.a) shall be replaced by V a ua,y, and V a ua,y,i, respectively. The nominal pryout strength, V cp, in shear of a single anchor of an anchor channel with anchor reinforcement shall not exceed. V cp = V cp,y = 0.75 k cp N cb, lbf (N) k cp and N cb as defined above. (D-3.a)
ESR-008 Most Widely Accepted and Trusted Page 9 of 22 4.2.4 Interaction of tensile and shear forces: For designs that include combined tensile and shear forces, the interaction of these loads has to be verified. Anchor channels subjected to combined axial and shear loads shall be designed to satisfy the following requirements by distinguishing between steel failure of the channel bolt, steel failure modes of the anchor channel and concrete failure modes. 4.2.4. Steel failure of channel bolts under combined loads: For channel bolts, Eq. (D-32.a) shall be satisfied b N φn ua ss 2 b Vua +.0 φvss 2 (D-32.a) N b ua and V b ua = V b ua,y are the factored tension load and factored shear load on the channel bolt under consideration. This verification is not required in case of shear load with lever arm as Eq. (D-20.b) accounts for the interaction. 4.2.4.2 Steel failure modes of anchor channels under combined loads: For steel failure modes of anchor channels Eq. (D-32.b), (D-32.c) and (D-32.d) shall be satisfied. a) For anchor and connection between anchor and channel profile: α a a a a N N V V ua,y ua,y max ua ua ; + max ; 0. Nsa N sc Vsa,y V φ φ φ φ sc,y α (D-32.b) α = 2 for anchor channels with max (V sa,y; V sc,y) min (N sa; N sc) α = for anchor channels with max (V sa,y; V sc,y) > min (N sa; N sc) b) At the point of load application: b N φn uα sl M φm α s, φlex s, φlex V + φv α b uα, y sl, y V + φv α b uα, y sl, y.0 α.0 α = 2 for anchor channels with V sl,y N s,l (D-32.c) (D-32.d) α = for anchor channels with V sl,y > N s,l 4.2.4.3 Concrete failure modes of anchor channels under combined loads: For concrete failure modes of anchor channels Eq. (D-32.e) shall be satisfied. α N φn uα nc α V + φv α uα, y nc, y α.0 (D-32.e) α =.5 for anchor channels without anchor reinforcement or with anchor reinforcement to take up tension and shear loads α =.0 for anchor channels with anchor reinforcement to take up tension or shear loads 4.2.5 Minimum member thickness, anchor spacing, and edge distance: Anchor channels shall satisfy the requirements for edge distance, anchor spacing, and member thickness. The minimum edge distance, minimum and maximum anchor spacing, and minimum member thickness shall be taken from Table of this report. The critical edge distance, c ac, shall be taken from Table 4 of this report. 4.3 Allowable stress design: 4.3. General: Strength design values determined in accordance with ACI 38-05, -08, - Appendix D or ACI 38-4 Chapter 7, as applicable, with amendments in Section 4.2 of this report may be converted to values suitable for use with allowable stress design (ASD) load combinations. Such guidance of conversions shall be in accordance with the following: For anchor channels designed using load combinations in accordance with IBC Section 605.3 (Allowable Stress Design), allowable loads shall be established using Eq.(3.), Eq.(3.2): or Eq.(3.3): T allowable,asd = φn n / α ASD V y,allowable,asd = φv n,y / α ASD Eq.(3.) Eq.(3.2) M s,flex,allowable,asd = φm s,flex / α ASD Eq.(3.3) : T allowable,asd = allowable tension load, lbf (N) V y,allowable,asd = allowable shear load perpendicular to the channel axis, lbf (N) M s,flex,allowable,asd = allowable bending moment due to tension loads lbf-in. (Nm) φn n = lowest design strength of an anchor, channel bolt, or anchor channel in tension for controlling failure mode as determined in accordance with ACI 38-05, -08, - Appendix D or ACI 38-4 Chapter 7 as applicable with amendments in Section 4.2 of this report, lbf (N). φv n,y = lowest design strength of an anchor, channel bolt, or anchor channel in shear perpendicular to the channel axis for controlling failure mode as determined in accordance with ACI 38-05, -08, - Appendix D or ACI 38-4 Chapter 7 as applicable with amendments in Section 4.2 of this report, lbf (N). α ASD = conversion factor calculated as a weighted average of the load factors for the controlling load combination. In addition, α ASD shall include all applicable factors to account for non-ductile failure modes and required overstrength. 4.3.2 Interaction of tensile and shear forces: Interaction shall be calculated in accordance with Section 4.2.4 and amendments in Section 4.2 of this report. N ua, V ua,y and M u,flex shall be replaced by the unfactored loads T a, V a y, M a. The design strengths φn n, φv n,y and M s,flex shall be replaced by the allowable loads T allowable,asd, V y,allowable,asd and M s,flex,allowable,asd. T a = unfactored tension load applied to an anchor channel, lbf (N) M a = unfactored bending moment on anchor channel due to tension loads, lbf-in. (Nm) V a y = unfactored shear load applied to an anchor channel perpendicular to the channel axis, lbf (N) 4.4 Installation: Installation parameters are provided in Table of this report. Anchor channel locations shall comply with this report and the plans and specifications approved by the building official. Installation of the anchor channels and
ESR-008 Most Widely Accepted and Trusted Page 0 of 22 channel bolts shall conform to the manufacturer s printed installation instructions (MPII) included in each shipment, as provided in Tables 0 through 2 of this report. Channel installation in formwork includes the following steps according to Table 0 of this report:. Selection of anchor channel, in accordance to the construction document; 2. Placing channel into formwork. Anchor channel must be flush with the concrete surface; a. Steel formwork: Fixing with HALFEN channel bolts through formwork penetration; b. Steel formwork: Fixing with rivets; c. Steel formwork: Fixing with HALFEN fixing cone; d. Timber formwork: Fixing with nails; e. Timber formwork: Fixing with staples; f. Fixing in the top surface of concrete: Fixing by using auxiliary construction; g. Fixing in the top surface of concrete: Fixing from above directly to the reinforcement; and h. Fixing in the top surface of concrete: Fixing to the reinforcement, using the HALFEN ChanClip. 3. Cast in and compact the concrete; 4. Hardening of the concrete; 5. Striking the formwork; and 6. Removing the combi strip filler. Channel bolt installation in the anchor channel shall include the following steps according to Table of this report:. Selection of the HALFEN channel bolts in accordance with the planning document. 2. Insert the channel bolt into the channel. After a 90 turn clockwise, the channel bolt locks into the channel. (Check of the position of the bolt by notch). 3. Positioning of the channel bolt: At the channel ends a minimum clearance must be maintained, which corresponds with the overhang beyond the last anchor. 4. Tighten the hexagonal nut to the setting torque (T inst) acc. Table 2. T inst must not be exceeded. 4.: general 4.2 and 4.3: steel-to-steel contact. 5. After fixing the nuts, check the correct position of the bolt: If the notch is not perpendicular to the channel length axis, the channel bolt must be released completely, inserted and tightened again. 4.5 Special inspection: Periodic special inspection shall be performed as required in accordance with Section 705.. and Table 705.3 of the 205 and 202 IBC, Section 704.5 of the 2009 IBC and Section 704.3 of the 2006 IBC and in accordance with this report. For each type of anchor channel, the manufacturer shall provide inspection procedures to verify proper usage. 4.5. Inspection requirements: Prior to concrete placement, the special inspector shall inspect the placement of anchor channels in the formwork to verify anchor channel type, channel size, anchor type, number of anchors, anchor size, and length of anchors, as well as anchor channel location, position, orientation, and edge distance in accordance with the construction documents. The special inspector shall also verify that anchor channels are secured within the formwork in accordance with the manufacturer s printed installation instructions (MPII). Following placement of concrete and form removal, the special inspector shall verify that the concrete around the anchor channel is without significant visual defects, that the anchor channel is flush with the concrete surface, and that the channel interior is free of concrete, laitance, or other obstructions. When anchor channels are not flush with the concrete surface, the special inspector shall verify that appropriate sized shims are provided in accordance with the MPII. Following the installation of attachments to the anchor channel, the special inspector shall verify that the specified system hardware, such as T-headed channel bolts and washers, have been used and positioned correctly, and the installation torque has been applied to the channel bolts in accordance with the installation instruction (MPII). The special inspector shall confirm with the engineer of record that the attachments do not produce gravity, wind, and/or seismic loading parallel to the longitudinal axis of the channel. The special inspector shall be present for the installations of attachments to each type and size of anchor channel. Where they exceed the requirements stated here, the special inspector shall adhere to the special inspection requirements provided in the statement of special inspections as prepared by the registered design professional in responsible charge. 4.5.2 Proof loading program: Where required by the registered design professional in responsible charge, a program for on-site proof loading (proof loading program) to be conducted as part of the special inspection shall include at a minimum the following information:. Frequency and location of proof loading based on channel size and length; 2. Proof loads specified by channel size and channel bolt; 3. Acceptable displacements at proof load; 4. Remedial action in the event of failure to achieve proof load or excessive displacement. 5.0 CONDITIONS OF USE The HALFEN HTA anchor channel and HS channel bolts described in this report are a suitable alternative to what is specified in those codes listed in Section.0 of this report, subject to the following conditions: 5. The anchor channels and channel bolts are recognized for use to resist static short- and long-term loads, including wind and seismic loads (IBC seismic design categories A and B) tension loads (N ua) and shear loads perpendicular to the longitudinal channel axis (V ua,y), or any combination of these loads applied at any location between the outermost anchors of the anchor channel in accordance with Figure of this report. 5.2 The anchor channels and channel bolts shall be installed in accordance with Table and the manufacturer s printed installation instructions (MPII), as included in the shipment and as shown in Table 0 through 2 of this report. In case of a conflict, this report governs. 5.3 The anchor channels shall be installed in cracked or uncracked normal-weight concrete having a specified compressive strength f c = 2,500 psi to 0,000 psi
ESR-008 Most Widely Accepted and Trusted Page of 22 (7.2 MPa to 69.0 MPa) [minimum of 24 MPa is required under ADIBC Appendix L, Section 5..]. 5.4 The use of these anchor channels in lightweight concrete is beyond the scope of this report. 5.5 Strength design values shall be established in accordance with Section 4.2 of this report. 5.6 Allowable stress design values are established with Section 4.3 of this report. 5.7 Minimum and maximum anchor spacing and minimum edge distance as well as minimum member thickness shall comply with the values given in this report. 5.8 Prior to anchor channel installation, calculations and details demonstrating compliance with this report shall be submitted to the code official. The calculations and details shall be prepared by a registered design professional required by the statutes of the jurisdiction in which the project is to be constructed. 5.9 Where not otherwise prohibited by the code, HALFEN HTA anchor channels are permitted for use with fireresistance-rated construction provided that at least one of the following conditions is fulfilled: Anchor channels are used to resist wind or seismic forces (IBC seismic design categories A and B). Anchor channels that support a fire-resistancerated envelope or a fire-resistance-rated membrane are protected by approved fireresistance-rated materials, or have been evaluated for resistance to fire exposure in accordance with recognized standards. Anchor channels are used to support nonstructural elements. 5.0 Since an acceptance criteria for evaluating data to determine the performance of anchor channels subjected to fatigue or shock loading is unavailable at this time, the use of these anchor channels under such conditions is beyond the scope of this report. 5. Use of hot-dip galvanized carbon steel and stainless steel anchor channels is permitted for exterior exposure or damp environments. 5.2 Steel anchoring materials in contact with preservativetreated and fire-retardant-treated wood shall be of zinc-coated carbon steel or stainless steel. The minimum coating weights for zinc-coated steel shall comply with ASTM A53. 5.3 Special inspection shall be provided in accordance with Section 4.5 of this report. 5.4 HALFEN anchor channels and channel bolts are produced under an approved quality-control program with regular inspections performed by ICC-ES. 6.0 EVIDENCE SUBMITTED 6. Data in accordance with ICC-ES Acceptance Criteria for Anchor Channels in Concrete Elements (AC232), dated June 207. 6.2 Quality-control documentation. 7.0 IDENTIFICATION 7. The anchor channels are identified by the manufacturer s name, anchor channel type and size (e.g. HTA 52/34) embossed into the channel profile or printed on the channel profile. For anchor channels made of stainless steel the anchor channel description will be followed by A4 indicating the stainless steel grade. The marking is visible after installation of the anchor channel. The evaluation report number (ESR-008), and ICC-ES mark will be stated on the accompanying documents. 7.2 The channel bolts are identified by packaging labeled with the manufacturer s name, bolt type, bolt diameter and length, bolt grade, corrosion protection type (e.g. HS 38/7 M2 x 50 A4-70), evaluation report number (ESR-008), and ICC-ES mark. 8.0 NOTATIONS Equations are provided in units of inches and pounds. For convenience, SI (metric) units are provided in parentheses appropriate. Unless otherwise noted, values in SI units shall be not used in equations without conversion to units of inches and pounds. b ch width of channel, as shown in Figure 5, in. (mm) c a edge distance of anchor channel, measured from edge of concrete member to axis of the nearest anchor as shown in Figure 5, in. (mm) c a edge distance of anchor channel in direction as shown in Figure 5, in. (mm) c' a net distance between edge of the concrete member and the anchor channel: c a = c a - b ch/2, in. (mm) c a,red reduced edge distance of the anchor channel, as referenced in Eq. (D-29.c) c a2 edge distance of anchor channel in direction 2 as shown in Figure 5, in. (mm) c a,max maximum edge distance of anchor channel, in. (mm) c a,min minimum edge distance of anchor channel, in. (mm) c ac edge distance required to develop full concrete capacity in absence of reinforcement to control splitting, in. (mm) c cr edge distance required to develop full concrete capacity in absence of anchor reinforcement, in. (mm) c cr,n critical edge distance for anchor channel for tension loading for concrete breakout, in. (mm) c cr,nb critical edge distance for anchor channel for tension loading, concrete blow out, in. (mm) c cr,v critical edge distance for anchor channel for shear loading, concrete edge breakout, in. (mm) c nom nominal concrete cover according to code, in. (mm) d width of head of I-anchors or diameter of head of round anchor, as shown in Figure 5 of this annex, in. (mm) d 2 shaft diameter of round anchor, as shown in Figure 6 of this annex, in. (mm) d a diameter of anchor reinforcement, in. (mm) diameter of channel bolt, in. (mm) d s
ESR-008 Most Widely Accepted and Trusted Page 2 of 22 e e s f distance between shear load and concrete surface, in. (mm) distance between the axis of the shear load and the axis of the anchor reinforcement resisting the shear load, in. (mm) distance between anchor head and surface of the concrete, in. (mm) f c specified concrete compressive strength, psi (MPa) f uta f utc f utb f y f ya f yc f yb h h ch h cr,v h ef k k cp l l in p s s chb s cr s cr,n s max s min specified ultimate tensile strength of anchor, psi (MPa) specified ultimate tensile strength of channel, psi (MPa) specified ultimate tensile strength of channel bolt, psi (MPa) specified yield tensile strength of steel, psi (MPa) specified yield strength of anchor, psi (MPa) specified yield strength of channel, psi (MPa) specified yield strength of channel bolt, psi (MPa) thickness of concrete member, as shown in Figure 5, in. (mm) height of channel, as shown in Figure 5, in. (mm) critical member thickness, in. (mm) effective embedment depth, as shown in Figure 5, in. (mm) load distribution factor, as referenced in Eq. (D-0.a) pryout factor lever arm of the shear force acting on the channel bolt, in. (mm) influence length of an external load N ua along an anchor channel, in. (mm) web thickness of I-anchor, as shown in Figure 6, in. (mm) spacing of anchors in direction of longitudinal axis of channel, in. (mm) center-to-center distance between channel bolts in direction of longitudinal axis of channel, in. (mm) anchor spacing required to develop full concrete capacity in absence of anchor reinforcement, in. (mm) critical anchor spacing for tension loading, concrete breakout, in. (mm) maximum spacing of anchors of anchor channel, in. (mm) minimum spacing of anchors of anchor channel, in. (mm) s cr,nb critical anchor spacing for tension loading, concrete blow-out, in. (mm) s cr,v w A x z critical anchor spacing for shear loading, concrete edge breakout, in. (mm) width of I-shaped anchor, as shown in Figure 5, in. (mm) distance between end of channel and nearest anchor, in. (mm) internal lever arm of the concrete member, in. (mm) A brg bearing area of anchor head, in. 2 (mm 2 ) A i ordinate at the position of the anchor i, as illustrated in Figure 2, in. (mm) A se,n effective cross-sectional area of anchor or channel bolt in tension, in. 2 (mm²) A se,v effective cross-sectional area of channel bolt in shear, in. 2 (mm²) I y moment of inertia of the channel about principal y-axis, in. 4 (mm 4 ) M M 2 bending moment on fixture around axis in direction, lbf-in. (Nm) bending moment on fixture around axis in direction 2, lbf-in. (Nm) M s,flex nominal flexural strength of the anchor channel, lbf-in. (Nm) M s,flex,allowable,asd M ss M 0 ss lbf-in. (Nm) allowable bending moment due to tension loads for use in allowable stress design environments, flexural strength of the channel bolt, lbf-in. (Nm) nominal flexural strength of the channel bolt, lbf-in. (Nm) M u,flex bending moment on the channel due to tension loads, lbf-in. (Nm) N b N ca N cb N n N p N pn basic concrete breakout strength of a single anchor in tension, lbf (N) nominal strength of anchor reinforcement to take up tension loads, lbf (N) concrete breakout strength of a single anchor of anchor channel in tension, lbf (N) lowest nominal tension strength of an anchor from all appropriate failure modes under tension, lbf (N) pullout strength of a single anchor of an anchor channel in tension, lbf (N) nominal pullout strength of a single anchor of an anchor channel in tension, lbf (N)
ESR-008 Most Widely Accepted and Trusted Page 3 of 22 N nc N ns nominal tension strength of one anchor from all concrete failure modes (lowest value of N cb (anchor channels without anchor reinforcement to take up tension loads) or N ca (anchor channels with anchor reinforcement to take up tension loads), N pn, and N sb), lbf (N) nominal steel strength of anchor channel loaded in tension (lowest value of N sa, N sc and N sl), lbf (N) N ns,a N sa N sb N 0 sb N sc N sl N ss N ua N a ua nominal tension strength for steel failure of anchor or connection between anchor and channel (lowest value of N sa and N sc), lbf (N) nominal tensile steel strength of a single anchor, lbf (N) nominal concrete side-face blowout strength, lbf (N) basic nominal concrete side-face blowout strength, lbf (N) nominal tensile steel strength of the connection between anchor and channel profile, lbf (N) nominal tensile steel strength of the local bending of the channel lips, lbf (N) nominal tensile strength of a channel bolt, lbf (N) factored tension load on anchor channel, lbf (N) factored tension load on a single anchor of the anchor channel, lbf (N) N a ua,i factored tension load on anchor i of the anchor channel, lbf (N) N b ua factored tension load on a channel bolt, lbf (N) N ua, re factored tension load acting on the anchor reinforcement, lbf (N) T allowable,asd T inst V allowable,asd V b allowable tension load for use in allowable stress design environments, lbf (N) Installation torque moment given in the manufacturer s installation instruction, lbf-ft. (Nm) allowable shear load for use in allowable stress design environments, lbf (N) basic concrete breakout strength in shear of a single anchor, lbf (N) V ca,y nominal strength of the anchor reinforcement of one anchor to take up shear loads perpendicular to the channel axis, lbf (N) V ca,y,max maximum value of V ca,y of one anchor to be used in design, lbf (N) V cb,y nominal concrete breakout strength in shear perpendicular to the channel axis of an anchor channel, lbf (N) V cp nominal pryout strength of a single anchor, lbf (N) V cp,y nominal pryout strength perpendicular to the channel axis of a single anchor, lbf (N) V n,y lowest nominal steel strength from all appropriate failure modes under shear perpendicular to the channel axis, lbf (N) Vnc nominal shear strength of one anchor from all concrete failure modes (lowest value of Vcb (anchor channels with anchor reinforcement to take up shear loads) or Vca (anchor channels with anchor reinforcement to take up shear loads) and Vcp), lbf (N) Vns nominal steel strength of anchor channel loaded in shear (lowest value of Vsa, Vsc, and Vsl), lbf (N) Vns,a nominal shear strength for steel failure of anchor or connection between anchor and channel (lowest value of Vsa and Vsc), lbf (N) Vsa,y nominal shear steel strength perpendicular to the channel axis of a single anchor, lbf (N) Vsc,y nominal shear strength of connection between one anchor bolt and the anchor channel, lbf (N) Vsl,y nominal shear steel strength perpendicular to the channel axis of the local bending of the channel lips, lbf (N) Vss nominal strength of channel bolt in shear, lbf (N) Vss,M nominal strength of channel bolt in case of shear with lever arm, lbf (N) Vua factored shear load on anchor channel, lbf (N) Vua,y factored shear load on anchor channel perpendicular to the channel axis, lbf (N) V a ua factored shear load on a single anchor of the anchor channel, lbf (N) V a ua,y factored shear load on a single anchor of the anchor channel perpendicular to the channel axis, lbf (N) V a ua,i factored shear load on anchor i of the anchor channel, lbf (N) V a ua,y,i factored shear load on anchor i of the anchor channel perpendicular to the channel axis, lbf (N) Vua factored shear load on a channel bolt, lbf (N) V b ua,y factored shear load on a channel bolt perpendicular to the channel axis, lbf (N) Vy,allowable,ASD allowable shear load perpendicular to the channel axis for use in allowable stress design environments, lbf (N) α exponent of interaction equation [-] α ASD conversion factor for allowable stress design [-] α ch,n factor to account for the influence of channel size on concrete breakout strength in tension [-] α M factor to account for the influence of restraint of fixture on the flexural strength of the channel bolt [-]
ESR-008 Most Widely Accepted and Trusted Page 4 of 22 α ch,v factor to account for the influence of channel size and anchor diameter on concrete edge breakout strength in shear, (lbf /2 /in. /3 ) (N /2 /mm /3 ) ψ c,n modification factor to account for influence of cracked or uncracked concrete on concrete breakout strength [-] ψ c,nb modification factor to account for influence of cracked or uncracked concrete on concrete blowout strength [-] ψ c,v modification factor to account for influence of cracked or uncracked concrete for concrete edge breakout strength [-] ψ co,n modification factor for corner effects on concrete breakout strength for anchors loaded in tension [-] ψ co,nb modification factor for corner effects on concrete blowout strength for anchors loaded in tension [-] ψ co,v modification factor for corner effects on concrete edge breakout strength for anchor channels loaded in shear [-] ψ cp,n modification factor for anchor channels to control splitting [-] ψ ed,n modification factor for edge effect on concrete breakout strength for anchors loaded in tension [-] ψ g,nb modification factor to account for influence of bearing area of neighboring anchors on concrete blowout strength for anchors loaded in tension [-] ψ h,nb modification factor to account for influence of member thickness on concrete blowout strength for anchors loaded in tension [-] ψ h,v modification factor to account for influence of member thickness on concrete edge breakout strength for anchors channels loaded in shear [-] ψ s,n modification factor to account for influence of location and loading of neighboring anchors on concrete breakout strength for anchor channels loaded in tension [-] ψ s,v modification factor to account for influence of location and loading of neighboring anchors on concrete edge breakout strength for anchor channels loaded in shear [-] FIGURE 5 INSTALLATION PARAMETERS FOR ANCHOR CHANNELS FIGURE 6 TYPES OF ANCHORS FIGURE 7 CHANNEL BOLTS
ESR-008 Most Widely Accepted and Trusted Page 5 of 22 TABLE INSTALLATION PARAMETERS FOR HALFEN HTA ANCHOR CHANNELS CRITERIA SYMBOL UNITS ANCHOR CHANNEL SIZES 28/5 ) 38/7 ) 40/22 50/30 52/34 55/42 72/48 Channel height Channel width Moment of inertia, carbon and stainless steel h ch b ch I y in. 0.60 0.69 0.9.8.32.65.9 (mm) (5.25) (7.5) (23.0) (30.0) (33.5) (42.0) (48.5) in..0.50.56.93 2.07 2.5 2.83 (mm) (28.0) (38.0) (39.5) (49.0) (52.5) (54.5) (72.0) in. 4 0.0098 0.0205 0.0477 0.263 0.224 0.4504 0.8402 (mm 4 ) (4,060) (8,547) (9,859) (52,575) (93,262) (87,464) (349,72) Minimum anchor spacing s min in..97.97.97.97 3.5 3.5 3.5 (mm) (50) (50) (50) (50) (80) (80) (80) Maximum anchor spacing Installation height, round anchor s max h nom in. 7.87 7.87 9.84 9.84 9.84.8 5.75 (mm) (200) (200) (250) (250) (250) (300) (400) in..86 3.07 3.67 4.28 - - - (mm) (47.25) (77.9) (93.2) (08.7) - - - Installation height, welded anchor h nom in. 3.04 3.3 3.62 3.90 6.36 7.7 7.42 (mm) (77.25) (79.5) (92.0) (99.0) (6.5) (82.0) (88.5) in..57.97.97 2.95 2.95 3.94 5.9 Minimum edge distance c a,min (mm) (40) (50) (50) (75) (75) (00) (50) End spacing x in. 0.98 0.98 0.98 0.98.38.38.38 (mm) (25) (25) (25) (25) (35) (35) (35) Minimum shaft diameter d 2 in. 0.24 0.3 0.39 0.47 - - - (mm) (6.0) (8.0) (0.0) (2.0) - - - Minimum web thickness p in. 0.20 0.20 0.20 0.20 0.24 0.28 0.28 (mm) (5.0) (5.0) (5.0) (5.0) (6.0) (7.) (7.) Minimum width of I-anchor w A in. 0.59 0.59.00.8.54.57.97 (mm) (5.0) (5.0) (25.4) (30.0) (39.0) (40.0) (50.0) Min member thickness, round anchors h min in. 2.49 3.70 4.30 4.9 - - - (mm) (63.2) (93.9) (09.2) (24.7) - - - Min member thickness, welded anchors h min in. 3.67 3.76 4.25 4.53 6.99 7.80 8.05 (mm) (93.2) (95.5) (08.0) (5.0) (77.5) (98.0) (204.5) For SI: in. = 25.4 mm For inch-pound units: mm = 0.03937 in. ) Carbon and stainless steel TABLE 2 COMBINATION ANCHOR CHANNEL CHANNEL BOLTS CRITERIA SYMBOL UNITS ANCHOR CHANNEL SIZES 28/5 38/7 40/22 50/30 52/34 55/42 72/48 Bolt type HS 28/5 ) HS 38/7 ) HS 40/22 2) HS 50/30 2) HS 50/30 2) HS 50/30 2) HS 72/48 2) (mm) (8) - - - - - - (mm) (0) (0) (0) (0) (0) (0) - (mm) (2) (2) (2) (2) (2) (2) - Diameter d s (mm) - (6) (6) (6) (6) (6) - (mm) - - - (20) (20) (20) (20) (mm) - - - - - (24) (24) (mm) - - - - - - (27) (mm) - - - - - - (30) For SI: in. = 25.4 mm For inch-pound units: mm = 0.03937 in. ) Hammer-head channel bolts 2) Hook-head channel bolts
ESR-008 Most Widely Accepted and Trusted Page 6 of 22 TABLE 3 HTA ANCHOR CHANNELS: STATIC STEEL STRENGTH IN TENSION CRITERIA SYMBOL UNITS ANCHOR CHANNEL SIZES 28/5 38/7 40/22 50/30 52/34 55/42 72/48 Nominal strength for local bending of channel lips, tension Nominal steel strength of a single anchor in tension, round anchor Nominal steel strength of a single anchor in tension, welded anchor Nominal tension strength connection channel / anchor N sl N sa N sa N sc lbf 2,025 4,045 6,745 8,770 4,65 2,355 26,975 (kn) (9.0) (8.0) (30.0) (39.0) (65.0) (95.0) (20.0) lbf 2,045 4,520 7,060 2,700 - - - (kn) (9.) (20.) (3.4) (56.5) - - - lbf 6,070 6,070 0,275 2,40 8,930 22,975 28,730 (kn) (27.0) (27.0) (45.7) (54.0) (84.2) (02.2) (27.8) lbf 2,025 4,045 6,520 8,770 4,65 7,985 24,280 (kn) (9.0) (8.0) (29.0) (39.0) (65.0) (80.0) (08.0) Strength reduction factor φ - 0.75 (0.80) Nominal bending strength, carbon steel Nominal bending strength, stainless steel M s,flex M s,flex lbf-in. 2,745 5,35,825 9,835 32,550 54,260 77,725 (Nm) (30) (580) (,336) (2,24) (3,678) (6,3) (8,782) lbf-in. 2,830 5,250 - - - - - (Nm) (320) (593) - - - - - Strength reduction factor φ - 0.85 (0.90) For SI: in. = 25.4 mm, lbf = 4.448 N, lbf-in. = 8.85 Nm For inch-pound units: mm = 0.03937 in., N = 0.2248 lbf, Nm = 0.3 lbf-in. The tabulated value of φ applies when the load combinations of Section 605.2 of the IBC, ACI 38-4 Section 5.3 or ACI 38- Section 9.2 are used. If the load combinations of ACI 38- Appendix C are used, the appropriate value of φ in parentheses must be used. TABLE 4 HTA ANCHOR CHANNELS: STATIC CONCRETE STRENGTH IN TENSION ANCHOR CHANNEL SIZES CRITERIA SYMBOL UNITS 28/5 38/7 40/22 50/30 52/34 55/42 72/48 Concrete breakout strength Effective embedment depth 2 Area of anchor head, round anchor Area of anchor head, welded anchor h ef A brg A brg in..77 2.99 3.50 3.78 6.0 6.89 7.05 (mm) (45) (76) (89) (96) (55) (75) (79) in. 2 0.3 0.23 0.37 0.59 - - - (mm 2 ) (84.8) (50.8) (235.6) (377.8) - - - in. 2 0.30 0.30 0.5 0.60 0.66 0.80.00 (mm 2 ) (95.0) (95.0) (330.2) (390.0) (429.0) (56.0) (645.0) Critical edge distance c ac in. (mm) c ac = 3 h ef Strength reduction factor φ - 0.70 For SI: in. = 25.4 mm, lbf = 4.448 N For inch-pound units: mm = 0.03937 in., N = 0.2248 lbf The tabulated value of φ applies when both the load combinations of Section 605.2 of the IBC, ACI 38-4 Section 5.3 or ACI 38- Section 9.2 are used and the requirements of ACI 38-4 7.3.3(c) or ACI 38- D.4.3(c), as applicable, for Condition B are met. Condition B applies supplementary reinforcement is not provided. For installations complying supplementary reinforcement can be verified, the φ factors described in ACI 38-4 7.3.3(c) or ACI 38- D.4.3(c), as applicable, for Condition A are allowed. If the load combinations of ACI 38- Appendix C are used, the appropriate value of φ must be determined in accordance with ACI 38- D.4.4(c). 2 Embedment depth value is for design calculation used for round anchor and welded anchor, refer to table for required, h nom, installation embedment.
ESR-008 Most Widely Accepted and Trusted Page 7 of 22 TABLE 5 HTA ANCHOR CHANNELS: STATIC STEEL STRENGTH IN SHEAR AND INTERACTION EXPONENTS CRITERIA SYMBOL UNITS ANCHOR CHANNEL SIZES 28/5 38/7 40/22 50/30 52/34 55/42 72/48 Nominal strength for local bending of channel lips, shear Nominal steel strength of a single anchor in shear, round anchor Nominal steel strength of a single anchor in shear, welded anchor Nominal shear strength for connection channel / anchor V sl=v sl,y V sa=v sa,y V sa=v sa,y V sc=v sc,y lbf 2,025 4,045 6,745 0,5 5,735 22,480 26,975 (kn) (9.0) (8.0) (30.0) (45.0) (70.0) (00.0) (20.0) lbf 2,025 4,045 6,745 0,5 - - - (kn) (9.0) (8.0) (30.0) (45.0) - - - lbf 2,025 4,045 6,745 0,5 5,735 22,480 26,975 (kn) (9.0) (8.0) (30.0) (45.0) (70.0) (00.0) (20.0) lbf 2,025 4,045 6,745 0,5 5,735 22,480 26,975 (kn) (9.0) (8.0) (30.0) (45.0) (70.0) (00.0) (20.0) Strength reduction factor φ - 0.75 (0.80) For SI: lbf = 4.448 N For inch-pound units: N = 0.2248 lbf The tabulated value of φ applies when the load combinations of Section 605.2 of the IBC, ACI 38-4 Section 5.3 or ACI 38- Section 9.2 are used. If the load combinations of ACI 38- Appendix C are used, the appropriate value of φ in parentheses must be used. TABLE 6 HTA ANCHOR CHANNELS: STATIC CONCRETE STRENGTH IN SHEAR CRITERIA SYMBOL UNITS ANCHOR CHANNEL SIZES 28/5 38/7 40/22 50/30 52/34 55/42 72/48 Cracked concrete without reinforcement α ch,v lbf /2 /in. /3 5.6 0.5 0.5 0.5 0.5 0.5 0.5 (N /2 /mm /3 ) (4.0) (7.5) (7.5) (7.5) (7.5) (7.5) (7.5) Pryout failure, factor k cp -.0 2.0 Strength reduction factor φ - 0.70 The tabulated value of φ applies when both the load combinations of Section 605.2 of the IBC, ACI 38-4 Section 5.3 or ACI 38- Section 9.2 are used and the requirements of ACI 38-4 7.3.3(c) or ACI 38- D.4.3(c), as applicable, for Condition B are met. Condition B applies supplementary reinforcement is not provided. For installations complying supplementary reinforcement can be verified, the φ factors described in ACI 38-4 7.3.3(c) or ACI 38- D.4.3(c), as applicable, for Condition A are allowed. If the load combinations of ACI 38- Appendix C are used, the appropriate value of φ must be determined in accordance with ACI 38- D.4.4(c).
ESR-008 Most Widely Accepted and Trusted Page 8 of 22 TABLE 7 HS CHANNEL BOLTS: STATIC STEEL STRENGTH IN TENSION CRITERIA SYMBOL UNITS GRADE / MATERIAL BOLT HS CHANNEL BOLT SIZES M8 M0 M2 M6 M20 M24 M27 M30 28/5 2,967 4,8 4,946 - - - - (3.2) (8.6) (22.0) - - - - 38/7-5,26 6,60 2,342 - - - - - (23.2) (27.4) (54.9) - - - - 4.6 40/22-5,26 7,576 3,466 - - - - - (23.2) (33.7) (59.9) - - - - 50/30-5,26 7,576 4,8 22,03 3,743 - - - (23.2) (33.7) (62.8) (98.0) (4.2) - - 72/48 - - - - 22,03 3,743 4,275 50,447 - - - - (98.0) (4.2) (83.6) (224.4) 28/5 - - - - - - - - Nominal tensile strength N ss lbf (kn) 8.8 38/7 40/22 - - 3,29 20,87 - - - - - - (58.4) (92.6) - - - - - 0,43 5,52 28,236 - - - - - (46.4) (67.4) (25.6) - - - - 50/30-0,43 5,52 28,236 44,063 63,486 - - - (46.4) (67.4) (25.6) (96.0) (282.4) - - 72/48 - - - - 44,063 63,486 82,550 - - - - - (96.0) (282.4) (367.2) - Stainless steel grade 50 28/5 - - - - - - - - - - -,96 - - - - 38/7 - - - (49.8) - - - - Strength reduction φ - factor Stainless steel grade 70 28/5 38/7 5,755 9,27 - - - - - - (25.6) (40.6) - - - - - - - 9,27 9,94 - - - - - - (40.6) (44.) - - - - - 4.6 0.75 (0.80) 8.8 0.65 (0.75) Grade 50 0.75 (0.80) Grade 70 0.65 (0.75) The tabulated value of φ applies when the load combinations of Section 605.2 of the IBC, ACI 38-4 Section 5.3 or ACI 38- Section 9.2 are used. If the load combinations of ACI 38- Appendix C are used, the appropriate value of φ in parentheses must be used.
ESR-008 Most Widely Accepted and Trusted Page 9 of 22 TABLE 8 HS CHANNEL BOLTS: STATIC STEEL STRENGTH IN SHEAR CRITERIA SYMBOL UNITS GRADE / MATERIAL CHANNEL BOLT SIZES M8 M0 M2 M6 M20 M24 M27 M30 4.6,980 3,25 4,540 8,475 3,220 9,040 24,775 30,260 (8.8) (3.9) (20.2) (37.7) (58.8) (84.7) (0.2) (34.6) Nominal shear strength Strength reduction factor for steel failure under shear V ss lbf (kn) φ - 8.8 Stainless steel grade 50 Stainless steel grade 70-6,250 9,05 6,950 26,440 38,085 49,525 - - (27.8) (40.5) (75.4) (7.6) (69.4) (220.3) - - - - 8,455 - - - - - - - (37.6) - - - - 3,460 5,485 7,960 - - - - - (5.4) (24.4) (35.4) - - - - - 4.6 0.65 (0.75) 8.8 0.60 (0.65) Grade 50 0.65 (0.75) Grade 70 0.60 (0.65) 4.6 33.0 265.0 464.0,80 2,300 3,975 5,890 7,960 (5.0) (29.9) (52.4) (33.2) (259.6) (449.0) (665.8) (899.6) Nominal bending strength Strength reduction factor for bending failure M 0 ss lbf-in. (Nm) φ - 8.8 Stainless steel grade 50 Stainless steel grade 70 4.6 8.8 Grade 50 Grade 70-529.0 927.0 2,360 4,600 7,945,785 - - (59.8) (04.8) (266.4) (59.3) (898.0) (,33.5) - - - -,75 - - - - - - - (32.9) - - - - 232.0 463.0 82.0 - - - - - (26.2) (52.3) (9.7) - - - - - For bolts in shear bending of the bolt occurs the strength reduction factor for bolts in tension in accordnace with Table 7 shall be used. For SI: in. = 25.4 mm, lbf = 4.448 N, lbf-in. = 8.85 Nm For inch-pound units: mm = 0.03937 in., N = 0.2248 lbf, Nm = 0.3 lbf-in. The tabulated value of φ applies when the load combinations of Section 605.2 of the IBC, ACI 38-4 Section 5.3 or ACI 38- Section 9.2 are used. If the load combinations of ACI 38- Appendix C are used, the appropriate value of φ in parentheses must be used. TABLE 9 HTA ANCHOR CHANNELS AND HS CHANNEL BOLTS: MATERIAL SPECIFICATION AND PROPERTIES COMPONENT CARBON STEEL STAINLESS STEEL Material / Strength class Coating Material / Strength class Channel profile Carbon steel Hot-dip galvanized 55 μm Stainless steel A4 Anchor Carbon steel Hot-dip galvanized 55 μm Stainless steel A4 Channel bolts Plain washer ISO 7089 and ISO 7093- Hexagonal nuts ISO 4032 Not in scope of delivery Carbon steel grade 4.6 and 8.8 according to EN ISO 898- Production class A, 200 HV Property class 5 and 8 according to EN ISO 898-2 Hot-dip galvanized 50 μm or electroplated 2 μm Hot-dip galvanized or electroplated Hot-dip galvanized 50 μm or electroplated 2 μm Stainless steel grade 50 and 70 according to EN ISO 3506- Production class A, 200 HV according to EN ISO 3506- Stainless steel grade 70 and 80 according to EN ISO 3506-2
ESR-008 Most Widely Accepted and Trusted Page 20 of 22 TABLE 0 HTA ANCHOR CHANNELS: INSTALLATION INSTRUCTION Selection of anchor channel, in accordance to the planning document Placing channel into formwork After concreting the anchor channel must be flush with the concrete surface Cast in and compact the concrete Hardening of the concrete Striking the formwork Removing the combi strip filler 2. Steel formwork: Fixing with HALFEN channel bolts through formwork penetration 2.2 Steel formwork: Fixing with rivets 2.3 Steel formwork: Fixing with HALFEN fixing cone 2.4 Timber formwork: Fixing with nails 2.5 Timber formwork: Fixing with staples 2.6 Fixing in the top surface of concrete: Fixing by using auxiliary construction 2.7 Fixing in the top surface of concrete: Fixing from above directly to the reinforcement 2.8 Fixing in the top surface of concrete: Fixing to the reinforcement, using the HALFEN ChanClip