Engineering and Contracting . .Of 1 snatch team and driver 1 loader 1 dumpman % foreman V4 waterboy ; $ 6V4, 3591Cost per cu. vd.^ X ^ ?. cts 10 110 |)er cu. yd. ^ cts. per cu. yd. per 100-ftjbaul. Kfj .•\t the above rate of handling 10 X :«0- ;u. yds )uld be dunipeiBl* r,28 loads, or 17iper 10-hour day. From 2 p. m. to 0 :45 p. m., 3% hours, witifive scrapers working, 2-V2 loads were dumpe= 84 cu. yds. Cost: .-Xs above, with addition of 1 scraper= 3% 4141 Cost per cu. \il.^ X ^ cl* 10 84 per cu. >d.^ cts. per cu. yd. per lOO-flliaul. 10
Engineering and Contracting . .Of 1 snatch team and driver 1 loader 1 dumpman % foreman V4 waterboy ; $ 6V4, 3591Cost per cu. vd.^ X ^ ?. cts 10 110 |)er cu. yd. ^ cts. per cu. yd. per 100-ftjbaul. Kfj .•\t the above rate of handling 10 X :«0- ;u. yds )uld be dunipeiBl* r,28 loads, or 17iper 10-hour day. From 2 p. m. to 0 :45 p. m., 3% hours, witifive scrapers working, 2-V2 loads were dumpe= 84 cu. yds. Cost: .-Xs above, with addition of 1 scraper= 3% 4141 Cost per cu. \il.^ X ^ cl* 10 84 per cu. >d.^ cts. per cu. yd. per lOO-flliaul. 10 .•\t above rate of handling — X 252 3%loads or 224 cu. yds. would be dumped petlO-bour day. Thus it will be observed that the addition ofa scraper in this instance was all for the better, as for an increase of 15 per cent in cost,27 per cent more material would be handledper day at a decreased cost of 10 per cent percubic yard and per cent per cubic yard *per 100-ft. hau Another instance was where a coarse saili. nd Fig. 7. Wheel Scraper Work on a Haul of Ft. Which Was Not Economical. TABLE -WHEEL SCRAIEU \VC lUK IN Vi; ;v DKi ValtInK and preparing Transporting Trans porting to load. Loading. loaded. l)um ping. em ply. Delays. Mln. Sec. Mln. Sec. Mln. Sec. Mln. Sec. Mln. Sec. Min. Sec 0 33 0 31 . 1 2G 0 17 2 31 II 25 U 35 0 20 1 03 1 10 2 05 0 0 43 (1 23 1 2» 0 20 2 38 I) 44 0 14 1 24 0 26 2 49 0 25 0 44 II IS 1 07 0 15 2 44 0 30 . 0 0 21. 2 1 0 2 0 :3 D—Loaded haul 275 D—ICniply haul 625 S—275 1 m. s 21i; mln. KS—025 2 m. 8 211 min. K—244/21C 1 1 mln. sec. D/S + DKS 3 min. sec. w (l cu. yds. C—5030/0 cts. W 600 mln. n= X 601, Cost of 6 sciapcr gang. cts. per cu. yd. — cts. static cost + cts. per lOo haul. .$ was hauled about 325 ft. The loads were notvery good and the costs were ratiur high, butthe case serves well as an example of tinpoint
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