Manual of military engineering . a. read bearer. b. road transom. c. frame transom. d. shore transom,legs. f. diagonal braces g. footings,i. footropes^j, chesses. ribands. distance pieces. Note J Pootrofes are removecT after franies are locked. ?iiec 9 05 WdlerAGraham. Lri* folZcw Ptoute 76. CHAPTER XX.—FRAME BRIDGES, ETC. Ill lowered, and if a single-lock bridge, locked ; if a double-lock bridge, held back by the guys a little higher than their ultimate position. A single-lock bridge is then completed with the usual roadway: for a double-lock bridge two ^ distance pie
Manual of military engineering . a. read bearer. b. road transom. c. frame transom. d. shore transom,legs. f. diagonal braces g. footings,i. footropes^j, chesses. ribands. distance pieces. Note J Pootrofes are removecT after franies are locked. ?iiec 9 05 WdlerAGraham. Lri* folZcw Ptoute 76. CHAPTER XX.—FRAME BRIDGES, ETC. Ill lowered, and if a single-lock bridge, locked ; if a double-lock bridge, held back by the guys a little higher than their ultimate position. A single-lock bridge is then completed with the usual roadway: for a double-lock bridge two ^ distance pieces must be placed across the ends of the frame transoms, as shown in the diagram and the road-bearing transoms lashed across, as shown. The back gu^s can now be eased, and the bridge allowed to lock. The roadway is completed as usual. In order that the parts of frame bridges may fit together,considerable accuracy is necessary in taking the measure-ments and marking the positions for the lashings. To thisend a section of the gap and proposed bridge should bemarked out on the ground, allowing for camber. The sparsfor the legs must now be laid on this section in the exactpositions they wil
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmilitaryengineering
