National Geographic : 1917 Aug
s; War Bulletin No. 2, of the Chamber of Com merce of the United States, says: "Iron and steel should be used only when the require ment is unavoidable. Every effort should be made to can be done, and construction and development work requiring steel should be postponed wherever possible .. .. cement may be had in quantity for concrete work." Says Cass Gilbert, the New York architect: "There are hundreds of buildings erected in this country every year which could be just as well erected without steel, and in hundreds of others the amount of steel could be greatly reued. An enormous ton nage could be saved if reinforced concrete, masonry San bor other material were used. Practically all buildings .. of moderate height can be erected without the use of large quantities of structural steel. Reinforced concrete or oldfashio oned masory can take its place." Under present conmay be had in quantity for concrete work.ticularly desir able. All the materials-portland cement, sand, pebbles or crushed stone-are staple products, most of them obtainable near by. Concrete is made with ordinary labor under skilled supervision. Concrete contractors Sihave developed rapid and efficient methods of construc "' tion. There are many engineers, architects and con tractors who specialize in concrete construction. If necessary we can help you get in touch with them. CONSIDER THE ADVANTAGES OF CONCRETE Fireproof V erminproof Rigid Watertight Sanitary Durable Weatherproof Rapidly Built No Repairs - No Painting Concrete is used today more generally than ever before. The mallest job on the farm and the largest engineering works are -built of concrete. Use concrete to build that factory, foundry, shop, warehouse, bridge, tank or reservoir for storing liquids, coal Pocket, ore bin, grain elevator, garage-any building you are planning. - -Let us send you an interesting pamphlet entitled, "Why Build Fireproof ?" PORTLAND CEMENT ASSOCIATION WatertDALLAS MILWAUKEE SEATTLEary DENVER NEW YORK WASHINGTON, D. C.ing SF CONCRETE FOR PERMANENCE ill ll llllIII IllllllllIll lllli l illilHI lIIIIII| ||HilHUI i ll lIIIIIllIIIllIIll ll[ i l||l|]|[ |] ll|| lll lllllllh|lllllllll I "Mention the Geographic-It identifies you."