 The upstream end of each log should be drawn on shore and beveled to a whistle shape, so as to present less obstruction to the action of the current. Arrange the timber in the position it is to have in the raft the butts alternately up and down stream,...  Manual for Engineer Troops ... - Página 41por James Chatham Duane - 1864 - 275 páginasVista completa - Acerca de este libro
 | United States. Army. Corps of Engineers - 1870 - 130 páginas
...which is to be up stream when in the raft is drawn up on the shore and the lower side is bevelled into a whistle shape, so as to present less obstruction...raft — the butts alternately up and down stream, and the upstream ends forming a right angle, salient up stream. Suppose the case of a raft to be composed... | |
 | Thomas Wilhelm - 1881 - 676 páginas
...water. Select a place where there is little current, and where the bank slopes gently to the water. The timber is then arranged in the position it is...in the raft, — the butts alternately up and down the stream, — the upstream ends forming a right angle, salient up-stream. Suppose the case of a raft... | |
 | Thomas Wilhelm - 1881 - 722 páginas
...water. Select a place where there is little current, and where the bank slopes gently to the water. The timber is then arranged in the position it is to have in the raft, — the butta alternately up and down the stream, — the upstream ends forming a right angle, salient up-stream.... | |
 | U.S. Infantry and Cavalry School. Department of Engineering - 1902 - 240 páginas
...a whistle shape, so as to present less obstruction to the action of the current. Arrange the timber in the position it is to have In the raft, the butts...up-stream ends forming a right angle, salient up stream. The first log is brought alongside the shore and the end of a plank or a small trunk of a tree fastened... | |
 | United States. Army. Corps of Engineers - 1915 - 108 páginas
...end which is to be upstream when in the raft is drawn up on the shore and the lower side is beveled, so as to present less obstruction to the action of...the raft, the butts alternately up and down stream and the upstream ends so arranged a» to form a salient. 42. Assume that a raft is to be constructed... | |
 | United States. Army. Corps of Engineers - 112 páginas
...end which is to be upstream when in the raft is drawn up on the shore and the lower side is beveled, so as to 'present less obstruction to the action of...the raft, the butts alternately up and down stream and the upstream ends so arranged as to form a salient. PONTON MANUAL. to the second log, and so on... | |
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