What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
12-inch blocks 32 inches long 8-inch walls absorb water addition of coarse appear architects BLOCK BUILDING CONSTRUCTION block-concrete block-makers blocks per day blocks selling building material cement and sand coarse gravel coarse material columns and porch compression strength Concrete work includes CONSTRUCTION BY SPENCER containing Cost of Materials cubic foot dition of hydrate equals 40c facing of richer factory foot of gravel Freshly-made blocks gravel or screenings gravel or stone harden HOLLOW BLOCK CONSTRUCTION hollow concrete block hydrate lime y2 inches wide includes 18-inch footing inside surface labor Limestone screenings manufacture mixing mixture of cement mixtures as poor molding natural stone obtained permeable poorer mixtures porch piers porosity porous Portland cement proportion of cement rock-faced sand and gravel slaked lime Solid blocks strength of concrete suitable tained Tensile Strength terial ture type of construction Ultramarine water absorption water-proof compound water-proof qualities weight writer
Page 10 - For the preparation of concrete for blocks in which thorough mixing and use of an exact and uniform proportion of water are necessary, continuous mixing machines are unsuitable, and batch mixers, in which a measured batch of the material is mixed the required time, and then discharged, are the only type which will be found effective.