The Architect & engineer of California and the Pacific Coast . bout it and ex])Ioit it and lie laughedat for being a dreamer. Incidentally he has been the first to think of a lot oi (Jther things, inbuilding and other lines, for which others have been given credit—after thosethings became assured successes. Sincerelv Frkd W. Lkppkr.* * * Damp-proofing Wails For insulating stone buildings so that they will not absorb dam|>nessfrom the surrounding ground, a new proces> has been introduced in Europewhich, it is claimed, has proved successful. The method consists in sawinga slot in the found
The Architect & engineer of California and the Pacific Coast . bout it and ex])Ioit it and lie laughedat for being a dreamer. Incidentally he has been the first to think of a lot oi (Jther things, inbuilding and other lines, for which others have been given credit—after thosethings became assured successes. Sincerelv Frkd W. Lkppkr.* * * Damp-proofing Wails For insulating stone buildings so that they will not absorb dam|>nessfrom the surrounding ground, a new proces> has been introduced in Europewhich, it is claimed, has proved successful. The method consists in sawinga slot in the foundation a few inches above the ground line and inserting inthis lead jjlates coated with asphalt. To accomplish this a machine has beenconstructed which cuts a kerf about an inch in depth in the stone, .\fter theplates are set in place temporary wooden forms are laid and liquid cementemployed to dose the crevices. This plan, it is said, prevents moisture fromcreeping tip a wall, since it is unable to ])ass the insulation blocks. THE ARCHITECT AND EMHXEER 103. OF DR. GILBERT GRAHAM. Farr, ArchilccI Failure of Poor Derrick Connection A LARGE derrick hkunited nn the roof of a tall buildinti in Portland,Ore., recently failed while lioistinf^; the up))er sectiim of asteel smoke stack extension 10;/. feet in diameter and dropped it 143feet to the roof of a seven-story Iniildinjj. In describinfj the accident inthe Kntjineerinjj Record, Henry Black, engineer, Hnrean of ,Portland, Ore., said that a twisting moment on the derrick head producedhy eccentricity of guy connections probably caused the failure. The der-rick had a 106-foot boom of Douglas fir 14 inches in diameter at the tipand 22 inches at the bottom where it was connected to a 4i<-inch verticalI)in in an I-beam girder ])oorl\ connected to ihe .^0-foot sill of an .\ feel high, made with two 14.\14-inch timbers bolted at the toji betweentwo large steel plates. .\ heav
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