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CONSOLIDATED STEEL CORPORATION 



BEARING VALUES OF PLATES 



IN TONS OF 2000 POUNDS 



The pressure on masonry of different kinds should not exceed the following 

 values, in pounds per square inch: 



Kind of Masonry 



Brickwork in lime mortar 



Brickwork in cement and lime mortar . . 

 Brickwork in Portland cement mortar . 

 Portland cement concrete. . 



Pressure, Pounds 

 per Square Inch 



100 



150 



200 



350 



Sandstone of good quality 400 



Bluestone and limestone 500 



Granite 600 



Frequently a template of bluestone, or other hard quality of stone, is used 

 instead of a steel bearing plate. Where the load to be supported is considera- 

 ble, as at the ends of girders, both steel bearing plates and stone templates 

 should be used; in which case the size of the bearing plate is determined by 

 the allowable pressure on the stone template according to the safe pressure 

 given above for the kind of stone used. The size of the stone template must 

 also be sufficient to limit the pressure on the brickwork to the safe allowable 

 value as given above for the quality of masonry used. The stone should not 

 project beyond the steel bearing plate in any direction more than % of the 

 thickness of the stone. 



