Construction safety

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Nyvnn12354

Engineering

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Hello , I have a homework for my Construction safety class and i want someone to help me with it .

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CON/CNE 271 Construction Safety First Name______________________Last Name__________________ Homework #4 – Timber Bracing Problem Identify the correct table for Timber Trench Shoring provided in the handout from the OSHA Construction manual in Appendix C of Subpart P – Excavations, then a) Select the proper timber bracing materials (nominal sizes – S4S) for cross braces, wales, and uprights for use in a Type C classified soil. All spacing in problem statement and tables is measured center to center. (6) The following parameters are known: • depth of the trench is expected to be 9 feet • width of trench is to be 4 feet • vertical spacing for both the cross braces and the wales is 5 feet • horizontal spacing for the cross braces, also known as struts, is 7 feet Cross braces _________ Wales _________ Uprights _________ b) Sketch timber shoring layout below. (4)
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