Engineering and Contracting . col-lapsed, drawn through the forward sec- simply as a protection against the whiteant, the decision to do this having beenreached after tests which showed that inno case did the white ant attack woodthat had been protected with this paint. Fclirunrv 12, 1908. ENGINEERING-CONTRACTING 97 Method of Underpinning an EngineFoundation. The accompanying sketcli shows themethod adopted for underpinning an en-gine foundation at the factory of tlic Pa-cific Coast Condensed Milk Co., at , Wash. The factory is located onthe banks of the Skagit river. The soil isa ver
Engineering and Contracting . col-lapsed, drawn through the forward sec- simply as a protection against the whiteant, the decision to do this having beenreached after tests which showed that inno case did the white ant attack woodthat had been protected with this paint. Fclirunrv 12, 1908. ENGINEERING-CONTRACTING 97 Method of Underpinning an EngineFoundation. The accompanying sketcli shows themethod adopted for underpinning an en-gine foundation at the factory of tlic Pa-cific Coast Condensed Milk Co., at , Wash. The factory is located onthe banks of the Skagit river. The soil isa very loose sandy loam, and wlien thefactory was built the concrete foundationfor the 125 HP. Corliss engine was placedon this loam as sliown by the sketch. Un-der the motion of the engine the founda-tion soon began to rock in the directionin which the engine was running, therangeof its movement being from ^ to I the foundation broke away from theconcrete floor and its movements grewmore violent until the bed plate of the. 1 ( 65tee} X ,WeUCasmij \ 1 n 5anet\ \\ Sketch Showing Method of Underpin-ning Concrete Engine Foundation. engine was finally broken. It became nec-essary to strengthen the foundation. As the engine was installed in a brickengine house of very substantial construc-tion, it would have been very expensive toremove a portion of the wall so that apile driver could be taken inside and pilesdriven to reinforce the foundation. At thesuggestion of the Pacific Engineering Co.,Seattle, Wash., the plan was adopted ofsarrounding the old foundation with aconcrete footing carried on piers or pilesformed by sinking 8-in. well casing andfilling it with concrete. Six of these pileswere simk as shown by the sketch. Theoriginal foundation was first excavatedaround as shown and a hole 6 ft. deepwas dug where each pile was to go. The8-in. well casing was then set in the holeand jetted down, using a iVi-vn. pipe 18 and water supplied at 60 lbs. pressure by a pump. The
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherchicago, bookyear19
