Pacific Gas and Electric magazine . ial,etc., while the engineer had a small platform extendedon the lever side also. The hammer weighed 1100 pounds. \ half-inch flex-ible steel cable was used on the hoist and 900 feet ofsimilar cable was used for moving ahead. Ordinarilythe hammer was raised at the rate of 50 feet per minute,and when moving the driver traveled 25 feet per min-ute. The machine complete weighed about 7500 maximum length of pile that could be driven was25 feet. Five men were required to operate the machinesuccessfully, a foreman, engineer and three labat the rate of $
Pacific Gas and Electric magazine . ial,etc., while the engineer had a small platform extendedon the lever side also. The hammer weighed 1100 pounds. \ half-inch flex-ible steel cable was used on the hoist and 900 feet ofsimilar cable was used for moving ahead. Ordinarilythe hammer was raised at the rate of 50 feet per minute,and when moving the driver traveled 25 feet per min-ute. The machine complete weighed about 7500 maximum length of pile that could be driven was25 feet. Five men were required to operate the machinesuccessfully, a foreman, engineer and three labat the rate of $, $ and $ per day res With no sloughs to cross and straight driving, onepile to each pole, poles 352 feet apart, the crew ocould average 5 piles per day of 9 hours. Anportant feature was that the driving and bolting ipoles to the piles was carried on without interupting service on the line except when the polewere down or leaning badly and required re-placing. Following is an itemizedcost of apparatusand tools required:.
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