. Handbook of construction plant, its cost and efficiency. hand required cleaning, splitting and dry-ing before they could be burned; an added expense. Below arethe comparative figures on 100 stumps: DYNAMITE. Average 60 lbs. dynamite at 15c per lb $ Labor of expert and helper. 100 fuses at 45c per 100 feet 75 100 caps at 75c per 100 75 Total $ HAND LABOR. 100 average stumps require 3 men 33 days at ? per Stump pullers were out of the question, there was no stand-ing timber for the block and fall to be fastened to, the time nee- STUMP PULLERS 609 essary to hitc
. Handbook of construction plant, its cost and efficiency. hand required cleaning, splitting and dry-ing before they could be burned; an added expense. Below arethe comparative figures on 100 stumps: DYNAMITE. Average 60 lbs. dynamite at 15c per lb $ Labor of expert and helper. 100 fuses at 45c per 100 feet 75 100 caps at 75c per 100 75 Total $ HAND LABOR. 100 average stumps require 3 men 33 days at ? per Stump pullers were out of the question, there was no stand-ing timber for the block and fall to be fastened to, the time nee- STUMP PULLERS 609 essary to hitch to stumps buried just under the surface, fre-quently with rotted heart, together with the cost of the puller, hireof horses and men, made it way beyond the power of competingwith dynamite. Where there are a number of large stumps or trees to act asdead men, the use of stump pulling machines is 290-291. Where there are no natural dead men, the «Q|p|iBK^| ._^,,-- - :._-.,_-?_. ...,_,..- .„.._,. ....._. _ Fig. Fig. 291. machine must be anchored by means of large butts driven inthe ground. Stumps are pulled with a direct pull, the cable running fromthe stump to the machine, or with a double pull, the cable run-ning through a block fastened to the stump and being attachedto another dead man. A long cable should be used, as the machine is then movedfewer times. A 60-foot cable will clear about % acre, an 85-footcable about % acre, a 100-foot cable % acre, a 150-foot cable1% acres, a 200-foot cable nearly three acres, from one set-up. There are many types and makes of stump pullers on the mar-ket. The one illustrated in Fig. 291 is an improved machine con-structed of steel and iron with the exception of the lever, whichis a pole 12 to 25 feet long, cut from the woods. A one-horse operated machine suitable for pulling trees and 613 HANDBOOK OF CONSTRUCTION PLANT stumps up to 8 in diameter, fitted with 2 steel double powerpulleys and 100 fe
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
