Adams, Henry · London, New York [etc.] Longmans, Green, and Co. · leaf 221
. It should beobserved that the supporting power of the shores is transmitted entirelythrough the needles to the wall, and it will often be found in practicethat the needles are the weakest points in the system, particidarly in 206 THE MECHANICS OF BUILDING CONSTRUCTION heavy shoring. They should,… … a = Area of wall supported in sq. ft.t = Thickness of wall in inches.tv = Weight of wall per cubic foot, say 1 cwt.h = Height to head of shore in feet.w = Weight of shore in cwts.0 = Angle of shore with horizon.P = Upward vertical thrust of shore.Q = Horizontal thrust at top of raking shore in…
Building · Structural analysis (Engineering)
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