WATER AND DRAINAGE WORKS

Manawatu Herald, Volume XLIII, Issue 2329, 15 September 1921, Page 3

WATER AND DRAINAGE WORKS

The engineers, Messrs Climie and sun, presented the following report at Monday night’s Council meeting: “We have the honour to submit herewith for the approval of your Council two plans. One shows the construction of the septic tank, and the Other the arrangement and location of the pumping station. The septic tank, as will he seen from the plan, is divided into two compartments, each 25 feet wide and 75 l'eet long, the shallower one being a collecting tank, in which the effluent from the septic tank proper can be held up on the flood, and automatically released on the ebb tide. This arrangement obviates pumping of the effluent, except when the river is in flood. As regards the second plan, the arrangement proposed consists of a pump-house and collecting tank connected by a covered beltway to an engine house erected on the bank above. The collecting tank consists of a cylindrical structure of reinforced concrete, twelve feet in diameter, with a capacity of 8,000 gallons. This tank will be hermetically sealed, so that when the pump is in operation suction will be brought to bear on the wells, and the flow thereby greatly increased. Provision is made for access by means of a special manhole. On the top of this tank will be erected a square pump-house in concrete, capable not only of accommodating ' the drainage and water-supply pumps, but duplicate sets also if required. Valves and pipes have been so arranged that all the controlling operations can be done in the pump-house. In the case of fire,

v once the engine is started, it will be f possible to double the normal pressure simply, by opening one valve and closing another. The engine and producer house, not being required of such a permanent nature, it is proposed to construct in corrugated iron on a concrete foundation. Tn order to obtain the high speed, it will be necessary to drive the water- supply pump by belt from one of the flywheels. It is more suitable to drive the drainage pump from the engine pulley. This arrangement obviates the necessity of a counter-shaft. Normally the drainage pump will not be required, and the belt driving it can be taken off the pulleys until required for use, There are several positions in which the engine-house may be located. We show two such arrangements on the plan. We shall be glad to know the wishes of your Council regarding this matter. The pumps have been ordered, so that by removing the pulleys they can. be simply coupled to electric motors bolted down to the same bed-plate, when that form of drive is adopted. If at any time the current fails, the pulmay be replaced, and the pumps operated by the engine if required.”

11 was decided to adopt the Engineer's report, except that pari dealing with septic tank, and that plans of pumping station and collecting tank lie approved, and that the erection of same be proceeded with by day labour, under Mr Reid’s supervision.