Building & engineering news . or in cor-rosion. The investigation has shown thatthe corrosion was due to no accidentalinferiority of the material, but that itis to be considered as characteristic ofall material of this type. It. there-fore, appears that tinned copper is notsuperior in any way to tin plate forrooofing material and in view of itsgreater cost can no longer competewith it. Tinned .sheet copper is used also forcontaining vessels such as milk cans,and for fitt-ngs such as troughs, soda fountains and breweries. Itis probable that such articles wouldalso be subject to pitting
Building & engineering news . or in cor-rosion. The investigation has shown thatthe corrosion was due to no accidentalinferiority of the material, but that itis to be considered as characteristic ofall material of this type. It. there-fore, appears that tinned copper is notsuperior in any way to tin plate forrooofing material and in view of itsgreater cost can no longer competewith it. Tinned .sheet copper is used also forcontaining vessels such as milk cans,and for fitt-ngs such as troughs, soda fountains and breweries. Itis probable that such articles wouldalso be subject to pitting corrosion ofthe same type if they are not worn outby actual abrasion before the cor-rosion proceeds far. Technologic Paper No. 90. describingthis investgation. may be procuredfrom the Superintendent of Docu-ments. Washington. D. C. at 5 centsper copy. The sh-p is sinking the Captain sail the seas no more. He slipped a doughnut over his safely swam ashore. .HCW»eH«HKHKH«HCH«HKHK«JKHKHKHMHK«KKKH>^^. • Per Tear Published everr Wedneaday Seventeenth Tear. \o. -4 Pabllcatlon Office,6«0 Mission St. San Francisco, CaL, June 13. 1917 Telephone Donglaa 2372 The Universal Bed Late^ and Be^ in Wall Beds This bed is not fastened to any door or door jamb. It is portable—movable—you can move it to any part of the room or building. Itgoes through any stock door 6ft. 8 in high and 18 in. or more wide. H. E. SIMPTON & CO. Display Room Monadnock San Francisco Telephone Douglas 3111 i^<«H«HKHS<8KH«HKHK«HS^KHMH«HCHS<HMHS^K^ BUILDING AND E3NGINHBJRINQ NBWS it Is Almo^ Humm Phone KearnT 740 ; ^<^ The ImprovedNorton* Door Checkand Spring Still on Deck Best on Earth Sure to Close Your DoorsWithout Slamming. strictly As Air Cushion Check, working and Durability combined. Appliedto either side of any size door eitherRight or Left Hand, without ordering, give size of Door, also projection of Cas-ing (if an
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Keywords: ., bo, bookcentury1900, booksubjectarchitecture, booksubjectbuilding
