CRC-EVANS SADDLE BAG WEIGHT SYSTEM

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1 CRC-EVANS SADDLE BAG WEIGHT SYSTEM The Saddle Bag is a modern way of pipline bouyancy control, designed especially for use in wetlands and environmentally sensitive areas. Saddle Bags are a more effective and less expensive alternative to the traditional concrete weight system. The Saddle Bag is an aggregate filled geotextile fabric which is designed to either set on or strap on to provide negative buoyancy, depending on the project requirements. Holds down cost while it holds down pipe. CRC-Evans Weighting Systems Saddle Bags

2 FILLING TUBE TUBE TIES The Saddle Bag Weight BAR POCKET NYLON HANDLING AND SUPPORT STRAPS The Saddle Bag Weight consists of two lobes nesting on opposite sides of the pipe, which are secured by connector straps that fit over the top or saddle of the pipe, securing it in place. The Saddle Bag is end-loaded and fully sealed to prevent loss of aggregate during handling and installation. All stress points of the Saddle Bag are double sewn to provide strength. Saddle Bag Layout SADDLE AGGREGATE LOBE Material Specifications The CRC-Evans geotextile pipeline weight is manufactured entirely out of durable, chemically stable woven polypropylene fabric.

3 Standard sizes Pipe Size Nominal Pipe Size Actual Saddle Bag Weight Size inch mm inch mm lb kg , , ,500 1, ,000 2, ,000 2, ,000 3, ,000 4, ,500 5, ,000 6,804 Other sizes are available on request, per required negative buoyancy. Chemical Stability Polypropylene resists most alkali and acid substances and retains its structural properties between ph of 2.0 and The polymer also resists chemical breakdown in the presence of most oils and solvents. For specific reactivity and effect on bag lifespan consult CRC-Evans engineering. Thermal Considerations 5 minutes max Polypropylene loses strength as its temperature increases. The material melts at 323 F (161 C) and will burn if exposed to an oxidizing environment and high temperature. The bags may be exposed to temperatures up to 200 F (93 C). It is not recommended to expose the bags to temperatures over 175 F (80 C) for more than 5 minutes. The maximum continuous operating temperature to which an installed bag may be exposed to is 150 F (65 C). For installation in conditions where this temperature will be exceeded on a continuous basis consult CRC-Evans engineering.

4 Sun Exposure The polypropylene material the weights are constructed from is UV resistant but will still degrade in the presence of ultraviolet light over long periods of time. Bags must be shipped/stored with sufficient cover to protect the material from long-term sunlight exposure. Likewise, the bags should not be installed where extended exposure to sunlight can occur. Corrosion Considerations Corrosion of pipelines is a major issue as it can lead to shortened life of the pipeline or even to catastrophic failure. The CRC-Evans Saddle Bag weight is designed to allow free flow of water through the fabric and thus will not create a cathodic shield. This allows cathodic protection systems to function normally. The bag material itself is polypropylene, which is an inert material and will not cause corrosion of material it comes in contact with. Saddle Bag weights are flexible and free of sharp edges that can damage the corrosion protection coating on the pipes surface. When placed on the pipe the weight of the saddle bag is distributed across the surface. Life Expectancy The estimated lifespan of the polypropylene geo-textile fabric that makes up the main body of the Saddle Bag is in excess of 100 years under normal soil conditions.

5 Production Capacity Field Production (large diameter >36 PIPE) Target Production rate: filled bags per day three loaders Hopper carrier Filling loader Transporting loader Approximately: three operators and three laborers Shop Production (small diameter) Target Production rate: bags per day Equipment Required for Filling For the purpose of simplicity, CAT equipment will be used in this description. Equipment of equivalent capacity can be interchanged as needed. (As a general rule, the static tipping load at full articulation must be equal or greater than the weight to be carried.) Bag Size lb or Greater lb lb Less than 1100 lb (5000 kg or Greater) ( kg) ( kg) (Less than 500 kg) Hopper Carrier IT 938 or larger IT928 or larger IT24 or larger Skid steer loader, 60lbs min. Filling Loader IT 938 or larger 928 loader 924 loader Skid steer loader, (for charging hopper) 700lbs min. Transporting IT 938 or larger 928 or larger 914 or larger Skid steer loader (for stockpiling bags)

6 Lift Strap Technical Specifications Webbing strap description: 75mm 31,000 kg Webbing Colour: White Composition of webbing: PP Test Method Unit Target Values Variation Technical Specifications Webbing Weight ISO 3801 gr/m2 90 5% +/- Yarn Count Warp ISO 2060 Dtex 2,050 5% +/- Weft ISO 2060 Dtex 1,000 5% +/- Density Number of warp yarn ISO7211/2 Ends/cm Weft ISO7211/2 Picks/cm /- Tensile Strength Weft ISO KGF 2,900 Min. 3,000 Elongation Warp ISO % /- UV Stability ISO kly 200 Min. Bags Technical Specifications Fabric description: g/m2 Coated Circular Fabric Colour: White Composition of webbing: PP Test Method Unit Target Values Variation Technical Specifications Fabric Weight ISO 3801 gr/m % +/- Yarn Count Warp ISO 2060 Dtex 2,000 5% +/- Weft ISO 2060 Dtex 1,900 5% +/- Density Warp ISO7211/2 Ends/cm /- Weft ISO7211/2 Picks/cm /- Tensile Strength Warp ISO kg/5cm 214 Min. 194 Weft ISO kg/5cm 185 Min. 163 Elongation Warp ISO % /- Weft ISO % /- Coating Weight - gr/m2 35 0/-3 Breakdown Voltage ISO Kv - <6 UV Stability ISO kly 200 hours UV-Tester retain at least %50 of original value of The saddle bags are manufactured with two layers of above fabric. Therefore, the weight and the strength of the fabric is twice as high. Subject to chance without notice.

7 Saddle Bag Installation Instructions Hook into support straps on one side of bag only. Lower in on far side of pipe. Drape over to near side of pipe. Installed Saddle Bag

8 Benefits of the CRC-Evans Saddle Bag The Saddle Bag provides many benefits as compared to the use of concrete anchor weights. The Saddle Bag Weight is specifically designed for wetland applications. It will conform to the pipe and the ditch when installed, as well as maintain tension across the top of the pipe. The wetter the application, the better the Saddle Bag Weight performs. The Saddle Bag Weight has no environmental impact. The Saddle Bag Weight is fabricated from completely inert materials. There is no concern with leaching of granite into the soil in environmentally sensitive areas, or disposal of leftover concrete. The Saddle Bag Weight provides more negative buoyancy per pound than a concrete weight. The average density of rock is much greater than that of concrete, so the submerged weight is higher than the submerged weight of an equivalent concrete weight. This saves money fewer weights for same negative buoyancy. The Saddle Bag Weight saves on ditch depth. The Saddle Bag Weight does not extend above the top of the pipe, saving in ditch depth. In wetland installations of large diameter pipe, this can represent a significant savings in excavations cost. The Saddle Bag Weight allows less ditch dewatering. It is not necessary to totally expose the pipe prior to installation. The Saddle Bag Weight will not tip off of the pipe. The Saddle Bag Weight has a center of gravity well below the center of the pipe and will not tip off, regardless of the stability of the bottom of the ditch. There is no need for rock shield. The Saddle Bag Weight will not damage corrosion coating or the pipe, even if the bag strikes the pipe during installation. The Saddle Bag Weight is easily and quickly installed. In wetland applications the Saddle Bag Weight can be more quickly installed than a concrete set-on anchor weight due to less dewatering and less concern with bumping the pipe. Saddle Bag Weight can be handled, loaded out, and installed immediately after filling.! Disclaimer Although great care has been taken in compiling the information contained in this catalogue, CRC-Evans does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. Dimensions and weights provided for reference only. Dimensions, specifications and weights can vary depending upon final configuration of the equipment. Please contact CRC-Evans to confirm final weights and dimensions prior to shipment. Houston: (832) Toll Free: (800) Tulsa: (918) Netherlands: