Why did factories have those typical sloped roofs back in the early 20th century? Wouldn't a simple flat roof cost a lot less? - Quora
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12. Detail, trusses and glazing of sawtooth roof, west bay, view to east. - Interurban Electric Railway Bridge Yard Shop, Interstate 80 at Alameda County Postmile 2.0, Oakland, Alameda County, CA | Library of Congress
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The Street railway journal . 68o STREET RAILWAY JOURNAL. [Vol. XXIX. No i6. Floor El. im.O tooth Yz in. to the foot. This construction therefore allows slabs which are carried up
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