. Handbook of construction plant, its cost and efficiency. Fig. 83. View of Pontoon Discharge Pipe Used in Connectionwith the 30-in. Hydraulic Dredge. TABLE 97. I. TIME REPORT OF DREDGE FRANCIS T. SIMMONSFOR 1910 AvailableWorking Pumping Time. Time. Weather. Misc. Total. 1910. Hrs. Pet. Pet. Pet. Pet. April 624 May 600 June 624 July 600 August 648 September 600 October 624 II. ANALYSIS OF WORKING TIME September, 1910. Hrs. Mins. Pet
. Handbook of construction plant, its cost and efficiency. Fig. 83. View of Pontoon Discharge Pipe Used in Connectionwith the 30-in. Hydraulic Dredge. TABLE 97. I. TIME REPORT OF DREDGE FRANCIS T. SIMMONSFOR 1910 AvailableWorking Pumping Time. Time. Weather. Misc. Total. 1910. Hrs. Pet. Pet. Pet. Pet. April 624 May 600 June 624 July 600 August 648 September 600 October 624 II. ANALYSIS OF WORKING TIME September, 1910. Hrs. Mins. Pet. Total available time 600 .. .... Dredge worked 381 20 63 V> Delays 218 40 36y2 DREDGES Causes of Delays: Hrs. Weather 57 Short pipe 31 Suction pipe, pumping and plug 11 Pontoon line 31 Swinging cables 15 Main engine 24 Spud engine Cutter engine Cutter shaft Moving dredge to new cut 5 Towing and preparation 34 Miscellaneous 1 Stones 6 218 5 40 20 55 10 25 5 5 10 45 sate^KSirf Fig. View of 30-in. Hydraulic Dredge Francis T. Sim-mons in Operation in Lake Michigan. COST OF OPERATION AND REPAIRS OF DREDGE, 1910;TOTAL TIME IN COMMISSION, 4,320 HOURS Operation. Totals. Labor $13, Fuel 17, Supplies, tools, sleeves, oil, etc 4, Commissary labor and supplies 6, Field repairs, labor and material 6, Tug service 13, Derrick service Motor boat Insurance 3, Winter repairs and fitting up: Labor .. . 5, Material 2, Fuel commissary and tools 1, Tug service Totals: Operation 65, Repairs 9, Operation and repairs $74, Per Per. hr. cu. yd. $ $ .0300 .0076 .0104 .0106 .0238 .0757 .0005 .1352 .0010 .8102 .0060 .0093 .501 .0037 .2374 .0018 .1743 .0013 .1142 .0161 $ $ taw- <D00 ooaoor-Joi
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
