. Water & sewage works . ork done in a leisurely wayas compared with that done on overtimeand in a rush, but by the lack of themost effective equipment to offset thechronic shortage of men. is less than half; so there is no argumentin favor of the team outfit. The tractoris the only kind of traction which is safewith a load on a grade. The great varia-tion in the conditions of roadbeds andpercentages of grades and the differencebetween macadam, clay, gravel and dirtroads make it practically impossible togive an accurate estimate of the cost perton-mile of traction hauling, as it must,of course
. Water & sewage works . ork done in a leisurely wayas compared with that done on overtimeand in a rush, but by the lack of themost effective equipment to offset thechronic shortage of men. is less than half; so there is no argumentin favor of the team outfit. The tractoris the only kind of traction which is safewith a load on a grade. The great varia-tion in the conditions of roadbeds andpercentages of grades and the differencebetween macadam, clay, gravel and dirtroads make it practically impossible togive an accurate estimate of the cost perton-mile of traction hauling, as it must,of course, vary on each imlividual cost, however, can be closely approxi-mated by comparing it with the expenseof doing the same work with teams. Forinstance, on a good, level macadam road,where a team could easily haul a 3 or 4-ton load 20 miles in 10 hours, a Huber December, 191S MUNICIPAL ENGINEEPvlNC 51 SOUTHERN YELLOW PINE THE BEST WOOD FOR CREOSOTED PAVING BLOCKS OWING TO ITS EXTRAORDINARY PHYSICAL Yellow Pine Creosoted Blocks oa Whitehall Street. New York City —very heavy trulfic. Mr. H. W. Durham, Chief Engineer in Charge of Highways, Borough of Manhattan,City of New York, states: Our specifications provide that the wood to be used shall beSouthern Long Leaf Yellow Pine. * * * That the popularityof Creosoted Wood Blocks as a paving material is illustrated byits present use—320,000 square yards having been awarded in theCity of New York during 1912. * * * Very little trouble andfew repairs has resulted when the material has been Yellow Pine,and the absorption test has been maintained. The facts are. Southern Yellow Pine has made Creosoted Blocks a popular pavingmaterial, owing to its great strength under end compression, dense, hard texture, anduniform straight grain. The resin this wood contains is a preservation in itself, so thatYellow Pine blocks, when properly creosoted, will insure absolute paving satisfaction foryears in the most trying, cong
Size: 1871px × 1335px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectsewerage, bookyear191
