William A. Radford · Radford Architectural Company · leaf 20
when so measured it increases in volume from 20 to33 per cent, resulting in a deficiency ofcement. Proportions. Owing to the differentvalues of natural sand or fine crusherscreenings for use in mortar mixtures, duenot only to its mean effective size, but alsoto its physical characteristics, it is… … Fig. 26—Section illustrating the window construction,both exterior and interior. fourth inch mesh sieve, and containing notover ten per cent of clean, unobjectionablematerial passing the No. 100 sieve. Amarked difference will be found in thevalue of different sands for use in cementmortar. This is…
