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A=COM <br /> necessary, strengthen these areas to meet the intended loads. <br /> 4.3.7 Provide sills for shoring that are sound, rigid, and capable of carrying the maximum intended load. <br /> 4.3.8 Inspect all shoring equipment prior to erection to determine that it is as specified in the shoring <br /> layout. Do not use any equipment for shoring that is found to be damaged. <br /> 4.3.9 Inspect erected shoring equipment immediately prior to, during, and immediately after the <br /> placement of concrete. Immediately reinforce or re-shore any shoring equipment that is found to be <br /> damaged or weakened. <br /> 4.3.10 Provide re-shoring when necessary to safely support slabs and beams after stripping, or where <br /> such members are subjected to superimposed loads due to construction work done. <br /> 4.3.11 Build shoring or form systems in accordance with the AECOM procedure governing excavation <br /> when working in excavations. <br /> 4.4 Tube and Coupler Shoring <br /> 4.4.1 Use tubular steel frames for shoring layouts in accordance with each manufacturer's recommended <br /> safe working load based on tests conducted according to the"Recommended Procedure for <br /> Compression Testing Scaffolds and Shores" by the Scaffolding and Shoring Institute. <br /> 4.4.2 Prior to erection of steel frame shoring, conduct a thorough inspection to confirm material is not <br /> heavily rusted, bent, dented, or otherwise damaged or defective. <br /> 4.4.3 Provide final adjustment of adjustment screws prior to placement of concrete. Keep screw <br /> extensions to a minimum for maximum load carrying capacity. <br /> 4.4.4 Plan, design and construct any form, regardless of size, with an adequate factor of safety. <br /> 4.4.5 Do not use couplers (clamps)if they are deformed, broken, have defective or missing threads on <br /> bolts, or other defects. <br /> 4.4.6 Use material for the coupler(clamps)that is of a structural type such as drop forged steel, <br /> malleable iron, or structural grade aluminum. Do not use gray cast iron. <br /> 4.4.7 When checking the erected shoring towers with the shoring layout, confirm that the spacing <br /> between posts does not exceed that shown on the layout; check all interlocking of tubular members <br /> and tightness of couplings. <br /> 4.4.8 Confirm that all base plates, shore heads, extension devices, or adjustment screws are in firm <br /> contact with the footing sill and the form material, and are snug against the posts. <br /> 4.5 Vertical Slip Forms <br /> 4.5.1 Confirm that the steel rods or pipe on which the jacks climb or by which the forms are lifted are <br /> designed specifically for that purpose. Brace any rods not encased in concrete. <br /> 4.5.2 Position jacks and vertical supports in such a manner that the vertical loads are distributed equally <br /> and do not exceed the capacity of the jacks. <br /> 4.5.3 Provide the jacks or other lifting devices with mechanical dogs or other automatic holding devices <br /> to provide protection in case of failure of the power supply or the lifting mechanism. <br /> 4.5.4 Lift steadily and uniformly, and do not exceed the predetermined safe rate of lift. <br /> 4.5.5 Provide lateral and diagonal bracing of the forms to prevent excessive distortion of the structure <br /> during the jacking operation. <br /> 4.5.6 During jacking operations,the form structure shall be maintained in line and plumb. <br /> 4.5.7 Provide all vertical lift forms with scaffolding or work platforms completely encircling the area of <br /> placement. <br /> 4.6 Pre-Stressed and Post-Stressed Concrete <br /> Concrete(S3AM-338-PR1) <br /> Revision 1 July 31,2019 <br /> PRINTED COPIES ARE UNCONTROLLED. CONTROLLED COPY IS AVAILABLE ON COMPANY INTRANET. Page 3 of 5 <br />