Plain concrete for farm use, farmers' bulletin no. 1279 (1922)
U. S. Department of Agriculture · U.S. Department of Agriculture · leaf 18
and gravel. Where wheelbarrow measurement ofmaterials is practiced, as in charging a mixer, the capacity of thewheelbarrow should be determined by use of a measuring box. Thebox may be made as illustrated in Figure 11, from boards 12 incheswide. The dimensions in Table 2 are of boxes for use in… … Fig. 11.—Measuring box. Fig. 12.—Mixing Board. Table 2.-—Inside dimensions of measuring boxes for various proportions.[l-bag batch, box 12 inches deep.] Propor-tion. Box forsand. Box forgravel. FeeL Feet. 1:1: 2 1 byl Iby2 1:14:3 1 byli lby3 1:2: 4 1 by2 2by2 1:2^:5 H by 2 2 by 2* 1:3: 5 l£by2 2 by…
