DRAINAGE SYSTEM.

Manawatu Standard, Volume L, Issue 117, 14 April 1930, Page 2

DRAINAGE SYSTEM.

AT COLLEGE STREET SCHOOL. The drainage scheme for the College Street School, which, on tho recommendation of the committee, has been approved by the Wanganui Education Board, is a comprehensive one, providing for the adequate draining or tho school - grounds- on each side of College Street. '• This has been made possible by the acquisition of an outlet for -the drainnge. An easements has been secured by tho board, giving them the right to extend a drain three chains from the north-east boundary of the new school site to the natural watercourse. The fall in'this short length'is 16 feet. 1 A nine-inch diameter pipe is to be used. Along the north-east boundary will be another nine-inch diameter dram running down at the corner to a manhole which has been put down 11 feet. The boundary drain rises to a depth of eight feet at College Street. Draining intb this at right angles are two transverse six inch drains, which are at a depth of four- feet at the opposite side of the section. A drain, it was stated, could be put under College'Street to the old school grounds, which Could bo. easily drained with .the available fall of eight feet. Stormwater from the old school has never been satisfactorily dealt with, it was added. The six-inch pipe discharging into a manhole, on the Fitzherbert Street stormwater pipe did not function as it should, the theory being advanced that it was blocked with silt. Even, were, it in good order, however, it was, considered too small to carry off • the rainfaU over an area of 4J acres.