s shod at the bottom with a section of 12-in.solid rubber tire, and carries at the top a 5-ton truck spring on which is supported a weight of 6000 lb. Theentire weight is raised and allowed to fall repeatedly onthe center of the slab, the height of fall being increasedafter every 500 blows. At… … 30?S I t- f I mPRCT TE5T3 COrTPFHPISON OF MONOLITHIC SLABS 3R5E 1 3 6 SURFRCE CUSHION FILLER MO20- 3concrrh 3 WCL Brick fSond-Cem GroutH02Z-Z 4 N02I-4 3 « N0ti-4 • 4 no SO 1 •IOZI 1 vO^< / WJ< / / / too em noo Ka> ioao itNUMBER OF BL0W3 x>
Automobiles · Aeronautics
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