Anchors that can be used for a lifeline in a grain bin. or Ladder do not make good anchors!

Transcription

1 Anchors that can be used for a lifeline in a grain bin. or Ladder do not make good anchors!

2 Definitions: Carabiner 1 Webbing attachment hardware with double locking action rated at 4,000 pounds 8 mm Accessory cord rated at 3,600 pounds Forged eye bolt Welded eye bolt rated eyebolt welded eye bolt have less strength

3 Water knot only appropriate knot to use with webbing Bin stiffener internal or external vertical support in a bin Fisherman knot customary knot for use on accessory cord Bolt hangers attachment hardware rated for 24kn

4 Pre tied tying a rope before entering a bin is easier and quicker. Sling a loop made by tying the ends of a rope together Equalized attached in a way to spread the load on two or more points 19 gage bin sheet about the lightest gage sheet used in grain bins.

5 Ladder bracket the bracket that is bolted to the grain bin sheet. Ladder rung the part of the ladder you hold with your hands or step on with your feet Ladder sides Vertical sides of the ladder that rungs are attached to. Girth hitch a knot to attach a sling to an object.

6 Anchors with 1800 pound or 3600 pound rating.

7 Tag 9, a 3600 pound rated anchor: Purple webbing attached to a angle iron welded to a plate that is attached to the bin sheet by four 5/16 grade 5 bolts. The sheet is about 10 inches square with the bolts holes drilled in the peak of the corrugation and an identical sheet on the outside.

8 Top plate is the outside of the bin sheet on the previous slide. Tag 9. Lower two pipes and nuts are the outer side of the bin sheet on the next two slides for Tag 10 and Tag 17.

9 Tag 10, a 3600 pound rated anchor: Purple webbing attached to a forged ¾ eye bolt that is installed through the peak of the corrugation in the bin sheet. The back side of the sheet has a 2 pipe that is 4 long and secured by a nut (see previous slide).

10 Tag 17, an 1800 pound anchor rating: Yellow webbing attached to a ½ stainless welded eye bolt that is installed through the peak of the corrugation in the bin sheet. The back side of the sheet has a 2 pipe that is 4 long and secured by a nut (see previous slides).

11 3600 pound rated anchor: The carabiner is attached to a 3/16 plate through a ¾ hole that has 1/2 of steel from the hole to the plate edge. The plate is bolted to the side of the bin stiffener with four ¼inch or 5/16 grade 5 bolts.

12 Tag 2, 1800 pound rated anchor: A yellow green 1 webbing that is wrapped around the stiffener and the ends are tied together with a water knot..

13 Tag 1, an 1800 pound rated anchor: A blue 1 webbing sling that was pre tied by a water knot and wrapped around the bin stiffener and attached with a carabiner.

14 Tag 3, an 1800 pound rated anchor: An olive green 1 webbing that is wrapped around the stiffener twice and the ends are tied together with a water knot.

15 Tag 12, an 1800 pound rated anchor: An orange 8mm accessory cord that was pre tied by a fisherman knot into a sling. The sling is attached with carabiners to bolt hangers that are bolted to bin sheet bolts that each go through two bin sheets. A carabiner is used to equalize the anchor points.

16 Tag 22, 1800 pound anchor rated: A 3/16 diameter wire rope connected into a sling. It is wrapped around a stiffener and the loops attached by a carabiner.

17 Tag 23, a 3600 pound rated anchor: An orange 1 webbing sling that was pre tied by a water knot. Webbing is wrapped around two bin stiffener and attached and equalized with a carabiner.

18 Tag 23, a 3600 pound rated anchor: A yellow 1 webbing sling that was pre tied by a water knot and wrapped around the an angle iron that is bolted to the bin sheet splice with four bolts. Webbing is attached with a carabiner

19 Tag 18, an 1800 pound rated anchor: An olive green 1 webbing sling that was pre tied by a water knot and wrapped around an angle iron that is bolted to the bin sheet splice with three bolts. Webbing is attached with a carabiner.

20 Tag 13, a 3600 pound rated anchor: This anchor is made by Climbtech and designed for an emergency anchor. The toggle is inserted in the hole

21 Instillation is made by drilling a 7/8 hole through a bin sheet that is 19 gage or heavier. The toggle is inserted in the hole and by pushing the cable the toggle is rotated 90 degrees

22 The toggle is inserted in the hole and by pushing the cable the toggle is rotated 90 degrees and seats in the dish in the corrugated bin sheet. Tag 13, a 3600 pound rated anchor:

23 The following anchor points are not rated for lifeline use. The problem with each anchor is underlined

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25 Tag 24, no rating: A yellow junk rope

26 Tag 4, no rating: A olive green 1 webbing that is wrapped around a ladder bracket

27 Tag 19, no rating: A red 1 webbing sling that is wrapped around two ladder bracket s

28 Tag 5, no rating: An olive green 1 webbing wrapped around three ladder rungs the ends are tied with a water knot.

29 The webbing is attached and equalized with a carabiner. Tag 5, no rating:

30 Tag 6, no rating: A red 1 webbing that is wrapped around two ladder sides

31 Tag 8, no rating: A purple 8mm accessory cord that is wrapped around a ladder bracket The ends of the cord are tied together with a fisherman knot.

32 Tag 20, no rating: olive green 1 webbing that is wrapped around two ladder brackets

33 Tag 11, no rating: A red 8mm accessory cord wrapped around a ladder bracket twice

34 Tag 21, no rating: A red 1 webbing that is wrapped around two ladder side brackets

35 Tag 7, No Rating Red accessory cord attached to a ladder rung with a girth hitch. The sling is pre tied by a fisherman knot

36 Tag 24, No Rating Junk Rope tied around a bin stiffener and tied with a junk knot.

37 lifeline component and costs for every bin item number cost total economical best knot passing pulley attachment bracket for pulley to bin (guesstimate) anchor for entry point clothes line to install lifeline (diameter of bin) Total economical best

38 lifeline component costs of portable equipment item number cost total economical best either/ carabiners NFPA and ANSI or carabiners 24 kn either/ belay device or double prusic either/ lifeline, rescue 200 feet or lifeline, 7/16 static, 150 feet either/ harness or harness, rescue or rope access both webbing (20 feet) Total

39 The anchors have been evaluated by a structural engineer. We asked him if each anchor was able to support 1800 pounds or 3600 pounds. A safety factor of 2.5 was used. The anchors that did not meet 1800 pound rating are list as not rated. The current ASABE requires a lifeline to have an 1800 pound anchor so we chose this as our minimum anchor. will soon have more information on anchors and a complete lifeline for grain bin entry. This will have been accepted by OSHA for training on bin entry. OSHA requires a lifeline for grain bin entry.

40 The use of the subject anchor point fixtures described in this report is limited to WGM facilities. Installation of the anchor point fixtures is limited to WGM personnel trained in bin entry techniques including the proper installation and rigging of the anchor point fixture being used. No liability is assumed for the use or misuse of the information contained in this report by other parties. For more information contact Lynn McClure at Or the Grain Handling Safety Coalition at