Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 411
Fig. 287. safe compression value of the timber used; for hard pine, this shouldbe 1,000 poundsper square inch. The plate should be thick enoughto provide fen- the shearing stress on the metal, and the bending stressinduced by the pull of the rod on the unsupported portion of the plate.It is… … PULLING PLUNGER HYDRAULIC PASSENGER ELEVATOR, ELEVATORS The elevator as a inodern appliance has become a very impor-tant factor in business life. Fifty years ago it was comparativelyunnecessary, and in the few instances in which it was in use, itwas considered more of a luxury than a necessity. The…
Architecture · Building · Carpentry
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