Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 53
rometer scale with pointerindicates the position of the knife. When it is desired to measure off 40 REINFORCED CONCRETE ol and mix three materials, the machines are made with three tables setone above the other and mounted on the same spindle so that theyrevolve together. Each table has its own… … Fig. 15. Trump Measuring Device. Dry concrete is used in foundations which may be subjected tosevere compression a few weeks after being placed. It should not beplaced in layers of more than 8 inches and should be thoroughlyrammed. In a dry mixture the water will just flush to the surfaceonly when…
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