D.—l

Public Works Department Construction Plant. A statement showing labour-costs versus the cost of modern plant

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I I Cost per Cubic Yard. T . _ , T , , T , *• » Name of Work. Nature of Work. Tvpe of Plant used. I Savins: Remarks (mehidmg lead and Tjseful I 5 n — ; & * Data): Time Comparison. Hand. Machine. Per Cent . Waioru-Tokaanu Road .. Stripping ballast - pit and exca- Diesel tractor, carry-all and angle- j 6d. 3£d. 41-6 vating ballast dozer combination .. .. Road-formation .. .. Diesel tractor, carry- all and angle- ! Is. 4d. 75*0 On 4 chains lead. dozer combination Ahuriri Lagoon development .. Excavating drains and forming Drag-line (petrol), crawler type.. j 2s. 4-g-d. 8-1 d. 70*18 j road | Kamaka - Spring Creek, crossing Excavating spoil for filling .. § yard Diesel excavator, crawler Is. 8d. to Is. lOd. 5-06d. 7(3-2 With slip material cost by band elimination type .would rise up to 2s. 6d. per cubic yard. Mussel Point Aerodrome .. Excavating and filling and levelling Diesel tractor and Hamilton car- 2s. to 2s. 6d. 9d. to lid. 62-5 to 63-3 in loose sand and shingle rier scoop Karamea Harbour improvements.. Excavating and forming stop- Diesel tractor and Hamilton car- 2s. 3d. to 2s. 6d. 6d. to 9d. 77-7 to 7-0 banks in river-silt rier scoop Auckland- Whangarei Main High- Excavation of spoil for road- | yard crawler type Diesel exca- 2s. 8d. 2s. 0-718d. 21-9 Unfavourable conditions for maway, Waipu—Kaiwaka Section formation vator chine, wet weather causing loss of over one-third total days. Ohinewai overbridge approaches .. Excavation in hard clay for filling .. 3s. 3d. Is. 6d. 53-8 Shows actual cost by hand against (tendered price) tendered price for work with machine. Great South Road Highway con- Excavation and filling .. .. j Diesel crawler excavators and j 3s. Od. Is. lid. 36-1 Lead up to 30 chains. struction j mechanical scrapers i Hamilton-Rotorua S.H. .. Excavation and filling (material ; .. j 4s. 6d. 2s, 8d. 40-7 Shows actual cost by hand against mostly rhyolite) j (tendered price) tendered price for work with i machine. Birkenhead - Maungaturoto S.H., Excavation in heavy clay material j Diesel crawler excavator .. 2s. 8d. Is. 3-4d. 50-0 Both actual costs on same iob. Albany Hill Taupiri drainage scheme .. Excavating Rototuna drain .. i Diesel f yard crawler drag-line .. Is. lOd. to 2s. 9d. 60-8 Narrow drain, 2 ft. to 3 ft. water, (basic rate, 16s. per day) hand excavating did not take | out botton, while machine did. " • • I Excavating Komakorau Stream.. Diesel yard crawler drag-line .. Is. 6d. 7d. 61-1 Block cuttings in wide stream. ?? • • j Excavating Tauhei Stream .. Petrol crawler drag-line excavator Is. 2-25d. to Is. lOd. 6-6d. to 6-63d. 38-8 Obsolete type of machines. (basic rate, 9s. per day) • • Excavating Upper Mangawara .. Steam drag-line crawler excavator Is. " 10d. 16-7 Machine cost high owing to flood (basic rate, 9s. per day) and breakdown. 'Oisborne-Waikokopu Railway, Ko- Excavation in hard sandstone Diesel crawler-type shovel, } yard 3s. Id. ~ Is. 6d. 50-4 ! Machine is doing job in a quarter puawhara Section underlying stiff rubble and clay bucket ~ j of the time required by hand ! labour. ■Gisborne - Waikokopu, Bartlett's Excavation in heavy clay and papa § yard Diesel crawler shovel type 2s. 6d. Is. 6-24d. 40-0 j Machine will complete job in oneSection | third of the time required by hand labour. Ditto .. .. .. Excavation in heavy, wet clay and | yard Diesel crawler drag-line .. Is., 2d. 6-3d. 57 1 Machine completed job in half swamp soil the time (including double handling of one-fifth of total spoil) required by manual I ! methods.