Structural loading criteria for davit pedestals and fall arrest tiebacks define the forces and geometric limits for rooftop anchorage. The davit pedestal requires a six-inch minimum diameter with a maximum height of seven feet to the top of steel, supporting a maximum operating load per loading diagrams multiplied by a four safety factor alongside a two-hundred-pound davit dead load, with loads assumed to rotate three hundred sixty degrees in a horizontal plane about the pedestal centerline. The fall arrest tieback requires a four-inch minimum diameter with a maximum height of two feet six inches to the top of steel, designed for a five-thousand-pound ultimate load in any direction acting at the top center.
5000 LBS ULTIMATE LOAD IN ANY DIRECTION ACTING AT TOP CENTER OF TIEBACK CL TIEBACK FALL ARREST TIEBACK BY OTHERS 4" DIAMETER MINIMUM 2'-6" MAXIMUM T/STEEL EL SEE PLAN B TIEBACK LOADS LOAD ASSUMED TO ROTATE 360 DEGREE IN HORIZONTAL PLANE ABOUT PEDESTAL CL CL PEDESTAL MAX OPERATING LOAD PER LOADING DIAGRAMS X 4 SAFETY FACTOR 200 LBS DAVIT DEAD LOAD DAVIT PEDESTAL BY OTHERS 6" DIAMETER MINIMUM 7'-0" MAXIMUM T/STEEL EL SEE PLAN A DAVIT LOADS 5000 LBS ULTIMATE LOAD IN ANY DIRECTION ACTING AT TOP CENTER OF TIEBACK CL TIEBACK FALL ARREST TIEBACK BY OTHERS 4" DIAMETER MINIMUM 2'-6" MAXIMUM T/STEEL EL SEE PLAN B TIEBACK LOADS LOAD ASSUMED TO ROTATE 360 DEGREE IN HORIZONTAL PLANE ABOUT PEDESTAL CL CL PEDESTAL MAX OPERATING LOAD PER LOADING DIAGRAMS X 4 SAFETY FACTOR 200 LBS DAVIT DEAD LOAD DAVIT PEDESTAL BY OTHERS 6" DIAMETER MINIMUM 7'-0" MAXIMUM T/STEEL EL SEE PLAN A DAVIT LOADS
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