PETONE SEWERAGE WORKS

New Zealand Times, Volume XXXVII, Issue 8351, 11 February 1913, Page 10

PETONE SEWERAGE WORKS

REPORT BY MR R. FOX. COUNCIL TO ACCEPT A £9OOO LOAN. A special meeting of the Petqno Borough Council was held last evening to consider tho position in regard to the sewerage works. There were present—The Mayor (-Mr J. VC -UoEwaiJ, Councillors Short, List, Brockicbank, Cox, Lodder, Burridge, Trueman, and Piper. . , .... The borough engineer, in submitting a report by Mr R. box on the sewerage scheme, said the figures relating to tho cost had been carefully gone into, and he was satisfied they would be found to be substantially correct. The plans were in such a state that they could be submitted to any expert the council might select. Of course, during the progress of the works minor details might have to bo altered, but the council would be mad© aware of these as the occasion arose-

Mr Fox reported that the septic tank and details, outfall sewer, manholes and lampholes had been designed and drawn. The levels at street intersections, etc., had been taken and the streets chained. The sizes and grades of the sewers had been calculated to give tho requisite discharge and havo a self-cleansing velocity. The township was divided into four zones or sections, each having its own pumping station. No. 1 section would servo the area lying between Jessie street on the east and Boiton street on the west, and bounded by the stop-bank on the north side of Patti© street, provision having been made to reticulate that portion north of Heretaunga street when the roads were formed. No. 2 section embraced the aria between Bolton and Victoria streets and from the Esplanade to Jackson street, including Elizabeth street, Gear and Petone avenue. No. 3 section took in that portion between Victoria street and the Hutt road, including tho woollen mills, railway station, and a portion of Jackson street. No. 4 section sewers that portion of the borough from Jackson street to White’s Line and from Britannia street to Riddler’s crescent. The scheme was on the intercepting plan, the main servers being constructed _ along the Esplanade and serving their separate sections. Owing to the position and depths of the old storm-water system it was found necessary to go slightly deeper than was originally intended, the former sewers not being deep enough to get over the toil of them. The maximum depth on the Esplanade was about 10ft 6in. The 6-inch delivery main from No.' 4 would come down "Sydney street and junction with the 6-inch main from No. 3 station, then pass along the Esplanade through a 9-inch main, picking up No. 2 section and delivering through a 12-inch pipe into a chamber at the main pumping station. The delivery mains would be provided with the necessary reflex valves, etc. If the council decided to commence a portion of the work shortly it would be necessary to get a certain amount of plant, and to order sufficient pipes to reticulate the area to be started upon. He recommended, if a start was to be made, to build the septio tank, construct the outfall and delivery mains, the main pumping station, and the main intercepting sewer along the Esplanade, and reticulate the most thickly-populated portion of the borough, namely, No. 2 section. A contract should at once be let for the earthenware pipes. The pipes required for No. 2 section are as follow: 6-inch pipes, 6996; 9in. 1734; 12in, 1616; 15in, 78; 18in, 35; 4in (for house connections), 3000. The plant, timber, etc., required to carry out tho work Will approximately cost £675. £_ Cost of septio tank 2,750 Main delivery pipe 950 Main pumping station I,OW Delivery main from Wo. 2 station 1,390 No. 2 station 450 No. 2 reticulation 6,250 Plant, etc 675 £12,665 Nos. 1,3, and 4 sections could be reticulated for approximately £15,000. - He had not had sufficient time to go into the matter thoroughly. After the scheme had been approved of, it would be necessary to let a contract for the supply and delivery of cast-iron pipes and fittings. It was intended to utilise the engines at the pumping station of the eastern drainage system to run the generators which would supply the, power to the motors. As all the motors and pumps would be in duplicate, it ( would be advisable to generate sufficient power at the main station so that they could, if required, be run together. The Mayor said that his reason for calling the special meeting was to give councillors 'the opportunity of taking advantage of an offer of a loan of £9OOO at 4J per cent, to carry out the sewerage scheme. In view of this he had' asked the engineer to prepare a report showing the progress made with the plans, and that was now before the council. He proposed to ask the council to consider the question of printing debentures which could be issued from time to time on such terms and at such rates of interest a® mighmt be agreed on. He would also to ask the council to consider the question of calling tenders for pipes. The matter of referring the report to outside engineers might be taken in committee. In reply to questions the Mayor said the plant required for the first section would cost £12,665 and the septic tank would be for the whole of the system. Councillor Lodder thought that if on© section had to wait till another was completed and so on the cost of supervision, etc., would be increased. The Mayor said there would ,be some electrical, apparatus required of which the cost was not mentioned. Councillor Piper said that he did not wish to blame Mr Fox, but the cost of the whole work should have been placed before the council; therefore it would be advisable to defer consideration till later. He was pleased to see Mr Fox had recommended the submission of the plans and report to an outside authority. He moved that the plan* together with the estimate of the cost: of the work, be submitted to MY Cuthbert of Christchurch, and he be asked to report on the matter; The Mayor said that he had just ascertained the cost of the electrical work would be £I6OO. He thought the council should go into committee to consider the question of submitting the report to some outside authority. This was agreed to, and the council after consideration decided to accept the offer of £9OOO at 4J per .cent, and To call for tenders for the supply of earthenware pipes and cast-iron pipes.