...crossing — viz., the axis of the designed bridge, according to the above-mentioned rules as follows : 1. The axis of the bridge should be as nearly as possible perpendicular to the direction of the high-water current. 2. The direction of the high-water current should, if possible, coincide with the...

...balks alternating; the same for the chess. To Construct a Bridge over a Water-Course.— (PL XLVTTX.) The axis of the bridge should be, as nearly as possible,...are unloaded, as has already been described ; the pontoons launched. At the command, "Construct the bridge :" 1st Section. — Construct the first abutment,...

...shows another form of scarfing. 189. Joints In Compression. — Surfaces abutting against each other should be as nearly as possible perpendicular to the direction of the thrust. Where convenient, fish pieces may be used to retain the main. pieces in their proper position...