Pamphlets on Forest Improvements, Volume 11915 - Forests and forestry |
Common terms and phrases
animal animal's aparejo asphalt binding post bitumen blasting BLASTING CAP boot brace brackets bridge broken stone built cent cincha clay coils concrete connection construction corduroy cost cotton duck course cover cross crosstree crupper culverts depth diameter ditches drain DuPont edge extension bells feet filled foundation front grade gravel heavy hitch holes inches inches long inches wide insulator lash rope latigo left hand length line wire load logs loop macadam road material metallic method miles mule necessary pack master pack train packer pass pipe pole pounds powder protector rear repeating coil ribs rigging road surface rock rolled roller running rope saddle sand screenings secure side packs slack slag sling rope slope spans Specific gravity square yard standing rope station steel stick subgrade tamped thickness tion traffic trail trees wagon Western Electric width
Popular passages
Page 80 - No executive department or other Government establishment of the United States shall expend, In any one fiscal year, any sum in excess of appropriations made by Congress for that fiscal year, or involve the Government in any contract or other obligation for the future payment of money in excess of such appropriations unless such contract or obligation is authorized by law.
Page 9 - By special assignment to the whole problem of a portion of the force of the Office of Public Roads of the United States Department of Agriculture, whose interests and good work along other lines of the road question are already well recognized.* 3.
Page 29 - ... depth until the water flushes to the surface and all the voids are filled. The concrete shall not be allowed to fall from any considerable height. Before the concrete is placed in the moulds, a sheet-iron plate, six or eight Inches in width and about six feet long, or of such other dimensions as the contractor may find convenient, shall be held in position one and one-half (Ij) Inches from the surface of the mould or form.
Page 33 - All stone used in gutters shall be rounded field, bank, or river stone; no flat, shaky, or rotten stone shall be used. The stone may, on the average, lay from four (4) to six (6) square yards to the ton. A cubic yard may be estimated to weigh one and one-third (1i) tons.
Page 29 - Inches from the surface of the mould or form. The space between the form and this separator shall be filled with mortar, composed of one part of Portland cement and one part of sand, mixed to such a consistency as the engineer may direct, and, if he shall so direct, the mortar shall be thoroughly spaded after it is placed. Only a small batch shall be mixed at a time, and then only as needed. Immediately after the space between the separator and the form is filled with mortar the ordinary concrete...