Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 200
nd the v/idth from 3 feet to 7 feet in the standard sizes.They are usually made up of 1-inch pipe, although 1 |-inch is commonlyused in the larger sizes. Fig. 13C shows another form; in this caseall the loops are made of practically the same length by the specialform of construction shown. This is…
Architecture · Building · Carpentry
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