. Handbook of construction plant, its cost and efficiency. ouble-ended marine boilers,10 ft. 6 in. by 18 ft. long, with eight corrugated furnaces, werefitted at the beginning of last season with underfeed installation of engine room auxiliaries includes condenser,independent air pump, independent circulating pump, fire andbilge pumps and an electric light outfit. The rotary cutter isadapted to hard clay material and its edges are of hard steel 224 HANDBOOK OF CONSTRUCTION PLANT and are movable. Two seasons work have worn the cuttingedges badly and manganese steel will probably be s
. Handbook of construction plant, its cost and efficiency. ouble-ended marine boilers,10 ft. 6 in. by 18 ft. long, with eight corrugated furnaces, werefitted at the beginning of last season with underfeed installation of engine room auxiliaries includes condenser,independent air pump, independent circulating pump, fire andbilge pumps and an electric light outfit. The rotary cutter isadapted to hard clay material and its edges are of hard steel 224 HANDBOOK OF CONSTRUCTION PLANT and are movable. Two seasons work have worn the cuttingedges badly and manganese steel will probably be dredge is anchored by heavy spuds operated by can make a radial cut 175 ft. wide with a maximum depthof 35 ft. The dredge is provided with a complete repair shopand living quarters for the crew. The pipe line adopted has a central conduit 30 in. in diameter,carried by two cylindrical air chambers 33 in. in diameter. Thesections are 95 ft. long and are joined with the usual rubbersleeve. The material excavated was very stiff 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 V.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
