. The Street railway journal . cally unlimited life of the piles andtimber caps by having them alwayssubmerged. The inshore wall of thepower house is built upon a concretefooting that rests on the bedrock, towhich the foundations for the enginesand dynamos are carried, as indicatedin the accompanying sketch. In order toguard against any movement of theheads of the piles adjoining the railroadtracks, the caps resting on the pileswere of 12-in. x 12-in. timber, laid paral-lel with the river and secured to thepiles by mortises which fitted tenons on the pile-heads, while atright angles to the cap
. The Street railway journal . cally unlimited life of the piles andtimber caps by having them alwayssubmerged. The inshore wall of thepower house is built upon a concretefooting that rests on the bedrock, towhich the foundations for the enginesand dynamos are carried, as indicatedin the accompanying sketch. In order toguard against any movement of theheads of the piles adjoining the railroadtracks, the caps resting on the pileswere of 12-in. x 12-in. timber, laid paral-lel with the river and secured to thepiles by mortises which fitted tenons on the pile-heads, while atright angles to the caps, at intervals governed by the spacing of thepiles, there were placed pieces of 12-in. x 12-in. timber long enoughto support the concrete pier footings carrying the wall above. Toinsure still greater stability the piles were further secured bysplicing long capping timbers, so as to form practically continu-ous ties which extend inshore and are anchored to the heavy,buttressed foundations of the inshore wall. These tie timbers.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
