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  1. alpha17bravo

    hydraulic vertical shoring, plywood sheeting

    OHSA Interpretation: Use of plywood for shoring and support systems in trenches and excavations at: https://www.osha.gov/laws-regs/standardinterpretations/1992-04-15-3 references attached calculations, but the calculations are not attached. I've asked OSHA if the attachment is available but...
  2. alpha17bravo

    Trench Shield

    Looking for references applicable to the design of trench shields. H = 10 ft. or less. Have not been able to locate much. Thanks
  3. alpha17bravo

    concrete impact force

    I'm trying to find information on the impact force of concrete being discharged from a central mix plant in to a dump truck. No luck at all so far. I would appreciate any suggestions. Thanks.
  4. alpha17bravo

    ASCE 7 wind pressure

    I'm looking for information on calculating wind pressures on a low-rise building with two levels of sloping roofs. Example, a 30-foot high main building with a 15-ft high attached office area along one or both sides. ASCE 7 addresses this situation with flat roofs, but not sloping roofs. Any...

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