Ingegneria e contracting . nutes. 760,5 7,9 R = --X = 38,5 cts. Per yd cu. ;=: 14,1 cts. statico -|- 1,2 cts. trasporto per 100 ft. di trasporto. 600 0.26 TABLE TX.- -RASCHIETTO PER RUOTE WOL^K IN SABBIA GROSSA, ASCIUTTA, MOLTO LUNGA BERLINA. Attesa e preparazione Trasporto pino Dum e Trasporto a carico. Caricamento. Caricato. Rotazione. Vuoto. Ritardi. Min. Sec. Min. Sec. Min. Sec. Min Sec. Min. Sec. Min. Sec. 0 26 0 12 4 07 0 43 3 50 0 28 0 15 5 00 0 23 3 46 0 46 0 31 4 50 0 15 3 38 0 15 0 32 0 20 4 49 0 22 3 37 0 32 0 30 5 23 0 22 3 43 0 22 0 15 5 00 0 21 3 44 0 56 0 12 5 02 0 14 3 21 0 38 0 15 3 52 0 21 4 04

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Engineering and Contracting . nutes. 760.5 7.9 R = ——X = 38.5 cts. per cu. yd. ;=: 14.1 cts. static -|- 1.2 cts. transportation per 100-ft. haul. 600 0.26 TABLE TX.- -WHEEL SCRAPER WOl^K IN COARSE, DRY SAND, VERY LONG HATTL. Waiting and preparing Transporting Dum pine and Transporting to load. Loading. loaded. turning. empty. Delays. Min. Sec. Min. Sec. Min. Sec. Min Sec. Min. Sec. Min. Sec. 0 26 0 12 4 07 0 43 3 50 0 28 0 15 5 00 0 23 3 46 0 46 0 31 4 50 0 15 3 38 0 15 0 32 0 20 4 49 0 22 3 37 0 32 0 30 5 23 0 22 3 43 0 22 0 15 5 00 0 21 3 44 0 56 0 12 5 02 0 14 3 21 0 38 0 15 3 52 0 21 4 04 0 24 0 17 4 00 0 41 3 20 0 43 0 18 4 17 0 18 3 42 Av. 0 34.7 0 18.5 4 38 0 24 3 46.5 0 l.B D=:D = .1040. 9 scrapers nt $5.50 $49.50 s—lotn 4 min. 38to/3 min.224 1.23. sec 46.5 sec .224 min..276 min. 1 snatch ar id driver 7 50 KS—10 2.25 K—276/ 1 dumpman1 shovelma1 foreman1 waterboy .. 1 75 .1 min. 1.!.7 sec..8 min. 24.5 sec..0.296 cu. yds. 1 65 D/S (1 •f/K) ... 6.55 w 1.00 C 70**0o .7!i0 cts..600 min. W $70.20 ioi. rest, if necessary, but while at work let each:individual unit of the whole be performing its!function to the best of its capacity. | The greatest trouble with wheel scrapers isflikely to be caused by the heavy pressure on!the collars of horses and mules, due to loadingiin heavy ground. For this reason the collars!should be made to fit as perfectly as possible, !and the animals examined every night forsores on the necks or withers. i When loading wheelers with a snatch teamlthe chain should be hooked to a point as near*as possible to the scraper itself, otherwise theipull of the snatch team will throw a heavy load]on the backs of the wheeler team. t An excellent device observed in the«suburbs|of Cleveland, O., is shown in Fig. 4. By thismeans the pole has a very considerable lateralplay, very much to the relief of the wheel teamwhen strain comes upon the snatch. Figure 5 illustrates a typical arrangement ofteams, removing earth in street grading. Figure 6

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1900
• bookpublisherchicago
• bookyear19