. The Architect & engineer of California and the Pacific Coast . red. White, Terra Cotta, Slate. Note How It Is Made. Annealed Bessemer sheet steel rolled true to gauge—immersed in special asphaltum compound, at high tem-perature, which penetrates the minute pores or exposedcells on the surface, thus hermetically sealing it within amoisture, acid and fume proof coating. Then the Asbestos Felt is applied to both sides of thecoated steel under great pressure—thus uniting the threeelements—steel, compound and asbestos—so that eachprotects the other. This combination sheet is then grad-ually coole
. The Architect & engineer of California and the Pacific Coast . red. White, Terra Cotta, Slate. Note How It Is Made. Annealed Bessemer sheet steel rolled true to gauge—immersed in special asphaltum compound, at high tem-perature, which penetrates the minute pores or exposedcells on the surface, thus hermetically sealing it within amoisture, acid and fume proof coating. Then the Asbestos Felt is applied to both sides of thecoated steel under great pressure—thus uniting the threeelements—steel, compound and asbestos—so that eachprotects the other. This combination sheet is then grad-ually cooled, also underpressure, contracting and harden-ing into practically a solid plate. Our illustrated catalogue tells the whole story about this wonderfullyeffective building product—free for the asking, yet, worth dollars to anyman. You ought to have it on your desk. Dictate your request now. P. J. KNUDSEN CO. PACIFIC COAST AGENTS 310 CALIFORNIA STREETSAN FRANCISCO, CALIF. When writing to Advertisers mention this Magazine. 132 The Architect and Engineer. PHONE MARKET 3176 Glass aadGlazlag WorkGuaranteed EstimatesFurnished Orders Promptly Attended to W. E. MAHER SUCCESSOR TO Improved Colored Glass & Sign Co IN Fancy Colored GlassDecorations and Glass Signs The Most Durable la the World915 FILLMORE STREET SAN FRANCISCO. CAL. CONCRETA Jt DampProof Coating for Surfaces of Concrete or Brick CONCRETA is a Reliable PaintSpecialty prepared expressly forcoating Cement, Plasterand BrickWalls. Its wearing propertiesare unexcelled. It is much superior to ordinaryoil paints for this special class ofwork. CONCRETA works freely andcovers more surface than anyother Cement Coating. Its economy, durability andsanitary properties make it anunequaled coatingfor use in Millsand Factories of concrete or brickconstruction. WRITK AND MENTION THIS MAGAZINE TO W,, MANUFACTURERS SAN FRANCISCO, CALIFORNIA // you want a Flre=Proof Partitionspecify *Makowski Plaster Block* Made o
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