44 



BULLETIN 060, U. S. DEPARTMENT OE ACIMi I I .TVRE. 



Table (!. — ( 'vMcal contents of various /chicles corrymonly used for i runs porting material 



[Loose measure.] 



Cart: 



Cubic 

 teet. 



< >ne hor.se i regular size) 3 by 1 feet by 9 inches 9 



One horse (large) 3 by 5£ feet by 12 inches 16.5 



Concrete, push 5 



Fresno scraper 9-14 



Scraper drag: 



Xo. 1 7 



Xo. 2 4-5 



Scraper wheel: 



Xo. 1 9-10 



Xo. 2 12-13 



Xo. 2£ 14 



Xo. 3 16-1 7 



Wagon: 



Slat-bottom dump, 3 by 9 feet by 12 inches. 



Dump bottom, 3 by 9 feet by 24 inches 



Wheel-barrows: 



Regular size 



Large 



27 

 54 



Table 7. — Quantities required for 1 cubic yard of concrete for various mixtures. 



[Based on one barrel of cement being equal to 376 pounds, or 4 bags of 94 pounds each, and a barrel equal 

 to 3.8 cubic feet and using stone, 45 per cent voids.] 



Mixture. 



Material necessary for 1 cubic yard of concrete. 



Cement. 

 C. 



Sand, S. 



Stone, G. 



Cement. 



Sand. 



Stone. 



Barrels. 



Bags. 



Cubic 

 yards. 



Cubic 

 feet. 



Cubic 



yards. 



Cubic 

 feet. 



1 

 1 

 1 



2 



2£ 



3 



4 

 5 

 6 



1.57 

 1.30 

 1.11 



6J 



0.14 

 .46 



.47 



11 1 

 121 

 12J 



0.88 

 .92 

 .94 



23f 



24$ 

 25 



A very handy formula for finding the amount of material to 

 make 1 cubic yard of concrete is: 



The barrels of cement in 1 cubic yard = p ■ o , r* 

 Example : 



Barrels of cement to make a cubic yard of 1 :2$ :5 mixture = 



11 



1+2J- + 5 



= 1.3 barrels. 



To find the cubic yards of sand: Multiply barrels of cement by 

 proportional part of sand and the product by 0.141. Example: 

 1.3X2^X0.141 = 0.458 cubic yards of sand. To find the cubic 

 yards of stone, multiply the barrels of cement by the proportional 

 part of stone and the product by 0.141. Example: 1.3X5X0.141 = 

 0.916. 



