Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 126
hoolhouse work, as it has a comparatively free opening forair-flow and ispleasingand sim-ple in design.INIore elaboratepatterns are usedfor fine dv/elling-house work.Registers w i t hshut-off valvesare used for air-inlets, while theplain registerfaces without thevalves are placedin the vent… … Fig. 71. Cast-iron Border for a Floor Register. 07 88 HEATING AND VENTILATION register faces. The grill or solid part of a register face usually takes up about-3 of the area; hence in computing the size, we must allow for this by multiplying the required net area by 1 .5, to obtain the total or…
Architecture · Building · Carpentry
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