Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 277
per 100 square feeton the roof. Concrete Slabs. These are usually moulded directly in placeby suspending forms from the roof trusses. They may or may not bereinforced, and in any case are usually not over 4 inches in thickness.Their weight is about 50 pounds per square foot. Their cost is… … Fig. 15. Ludowici Tile on Steel Purlins. Fig. 16. Ludowici Tile on Sheathing. weight of the slabs. Concrete roofing may be used on roofs which arepractically flat, ^ inch to 1 foot being sufficient pitch. Felt and Asphalt. This roofing is laid upon shingles, and consistsof one thickness of dry…
Architecture · Building
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