Cem 3164 test 1 - Study guides, Class notes & Summaries

Top Rails must be at least ___ thick - 1/4 inch Top Rails must be between __________ from working surface - 39-45 inches if wire rope is used for top rails of guardrails, at what intervals shall it be flagged? - 6 ft Midrails must be installed at least - 21 inches high There can be no guardrail opening larger than - 19 inches The toprail must withstand at least ______ of force - 200 lbs The midrail must withstand at least ______ of force - 150 lbs Toe boards must be at least ____tall and ...