REMARKABLE SAVING IN CESSPOOL EMPTYING.
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How Egham U.D.C. Reduced its Transport and Cesspool-emptying Costs by Nearly £1,000 in Nine Months.
IN A REPORT published recently by .I. Mr. G. W. Booth., the engineer and surveyor to the Egham Urban District Council, and dealing with the cost of collecting sewage and the haulage of materials by a Dennis vehicle fitted with interchangeable bodies, attention is called to the truly remarkable saving which has been effected by utilizing mechanical transport.
The vehicle employed on the work haa a capacity of 1,000 gallons, and the change-over from cesspool emptier to lorry can be effected in approximately 10 minutes. As a lorry the body tips either to the end or sides, the gear, being of the Bromilow and Edwards twin-ram type.
. Dealing with the cost figures if horses and carts had been used the total would have amounted to 21,666 5s., comprising the wages of two sewermen and pumn driver, carting, and the haulage of various materials, amounting to 1,649 tons, when the vehicles were not engaged on cesspool emptying.
As regards the motor vehicle, the capi038
taI charges amounted to 21,807, whilst the total cost of dealing with the sewage during 38 weeks, and, in addition, hauling 1,649 tons of material, amounted to 2682 17s. ad. this figure including depreciation at the rate of 10 per cent., interest on capital at 6 per cent. on half the total cost, tyres at lid., per mile, wages, 'petrol and oil, repairs and renewals (which, as a matter of fact, were nil), insurance and licence.
Comparing the totals, it will be seen that the saving effected by the use of the Dennis vehicle amounted in 38 weeks to
2983 7s. The cost per 1,000 gallons with horse transport would have worked out at 22 Os. 8d., and with mechanical transport it proved to be 15s. 7d., giving a saving per 1,000 gallons of 21 5s. id, Reference to the accompanying inns. tratioes will show our readers the Dennis vehicle in its guises as a tip, ring wagon and a cesspool emptier. As the former it makes .ft most useful transport vehicle, with a' capacity of f:r0i1.18 fiVO tons, and, as can be. seen, the tipping angle obtainable is ample.
At the back of the cab is a vertical pipe leading from the air exhauster, the last named being driven by the engine, as is the hydraulic pump for the tipping gear.
It will be noted that a considerable length of suction pipe is carried along the sides of the cesspool tank, and thus the vehicle is able to work at some little distance from the cesspo.-ols, a convenience the value of which cannot be over estimated.
Mr. Booth reports that he cannot speak too highly of the machine's capabilities and that the efficiency of the pump and hydraulic tipping gear is all that can be desired. ,
Any doubts which other municipal authorities may have as to the benefits obtained, by' the use of mechanical transport should certainly be dispelled by.the wonderful results obtained in this instance, which is only one of a vast number of similar cases, not only in combined cesspool emptying and Material, transport, as in this case, but in many other