MATERIALS FOR CONCRETE CONSTRUCTION IN MANILA. 473 



The analysis in fig. 11 sliows 2.2 per cent of oversize and 8.7 whicli 

 passes the smallest sieve. The percentage of voids is 31.2, and with 

 material under 0.1 inch screened out, 33.5 



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/NCHES IQIi20 JO «5 ,C7 .75 1 QQ I.SQ Z.2S 



DIAMETER OF PARTICLES IN CENTIMETERS AND INCHES 



Pig. 12. — Gkanulakmeteic Analysis of Maeiqtjina Geavel to Pass a o. 75-inch opening. 



The analysis shown by fig. 12 indicates 27 per cent of oversize gravel 

 and 6 per cent passing the smallest sieve. Voids 29.1, with material 

 under 0.1 inch screened out, 32.9 per cent. 



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INCHES .I0.IS.20 .JO *S .67 1.00 ISO 2 2S 

 DIAMETER OF PARTICLES IN CENTIMETERS AND INCHES 



Fig. 13. — Geanulaemethic Analysis of Maeiquina Geavel to Pass a i.s-inch Opening. 



The analysis in fig. 13 shows 12 per cent of oversize gravel and 3 per 

 cent passing the smallest sieve. AT'oids, 31.2 per cent. 



