CONCRETE AND MORTAR CUBES.
■602
Remarks.		
Ultimate strength.	Per square inch.	Is 3SS3 1 lili I USI 1 sglill 1111 1 00־ OSCO CO CO CO05 0000־00 ־־ of CO<N N <N <N<N rHrHrirH
	Total.	Pounds. 132,400 93,400 84,700 117,700 88,600 492,864 529.000 525.000 532.000 493.000 486.000 488.500 436.000 454.000 501.000 419.000 435.000 402, 300 361.000 364.000 293.500 355.000 173.000 241.000 202.500 222.000
First crack.		Pounds. 99.000 71.000 72.000 86,760 72,400 405,888 468.000 471.000 479.000	! 435.000 421.000 454.000 368.000 389.000 434,160 370.000 389.000 336.000 331.000 312.000 270.000 318,120 173.000 241,C00 202,500 222.000
	¡1	Sq. inches. 144.84 144.24 144.84 144.60 144. 36 144.96 144.84 144.48 144.96 144.84 144.48 145.20 145.32 144.60 144.72 144.48 144.48 144.84 145.44 145.08 144.24 144.60 145.08 145.08 144.48 145.20
Dimensions.	II Is +2 1 a	Inches: 12.01 12.00 12.03 12.02 12.02 12.04 12.04 12.03 12.05 12.02 12.02 12.03 12. 04 12.02 12.02 12.01 12.00 12.03 12.04 12.06 12. 02 12.03 12.06 12.05 12.01 12.06
		Inches. 12.06 12.02 12.04 12.03 12.01 12.04 12.03 12.01 12.03 12.05 12.02 12.07 12.07 12.03 12.04 12.03 12.04 12.04 12.08 12.03 12.00 12.02 12.03 12.04 12.03 12.04
		Inches. 11.89 11.83 11.95 11.94 11.98 12.02 12.01 12.08 12.01 12.06 11.93 11.92 11.95 11.97 11.98 12.00 12.05 12.07 11.98 11.92 12.00 12.01 11.88 11.87 11.88 11.98
Weight.	Per cubic foot.	Pounds. 148.5 144.8 142.3 147.6 143.9 148.8 148.5 146.5 147.9 146.9 130.6 131.8 129.8 130.3 130.6 128.1 127.5 127.0 126.0 125.9 124.8 125.9 120.3 120.4 120.8 119.7
	Total.	«O OCOOOO O OOOOOO O OCOCOO C© COCOOOOOO OOOCO
		as SSS2 I SSSS % SSIs S SSSSSB
I		d <M d <N C-l d d d d d d d d d IH HHHHHH rlr-IHH
		Í	 ”•	
Composition.	Broken stone.	4—2*" trap	 4—1*״ to 3״ pebbles. 4—1*״ to 2*״ b r o ken brick. 6—1*״ to 2*״ broken brick. 0	
	Sand.	2 2 2 3 4
	Ce- ment.	*־* : : : : r-( ; : ; : rH ; : : ; rH : : : : : : ^ :
Brand of cement.		Norton’s Rosen-dale. Alpha Portland .. Alpha Portland .. Alpha Portland .. Alpha Portland ..
Marks.		I IfIS 5 ÎISS 1 Ills 1
cubes made at Watertown Arsenal-