Manual on the preparation of state-aided housing schemes.

Date:
1919
Catalogue details

Licence: Public Domain Mark

Credit: Manual on the preparation of state-aided housing schemes. Source: Wellcome Collection.

    34/86 (page 28)
    6. Illustrations Nos. 1 and 2 show a particular example of the two systems of drainage—No. 1 fl: The following requirements should be observed in connection with the sectional system of (i) (ii) (iii) (vi) (vii) One connection to the sewer to serve a section generally not exceeding 14 dwellings. An intercepting trap and manhole to be placed on the common drain, within the section drained as near as convenient to the junction of the sewer. The system to be ventilated in the following manner :— (a) A fresh air inlet or vent pipe to be placed at the manhole containing the intercepting trap. (6) At the head of each common drain. (c) Each separate block of dwellings to have a vent pipe at or near the highest point of the common drain adjoining ; the vent to be carried up clear of the eaves of the building. Note.—Where blocks of dwellings have w.c.’s on the first floor connected to soil pipes, the soil pipes should be carried up as vent pipes in the usual way ; in that case the vent pipes previously mentioned for each separate block could be omitted. A manhole to be provided where two common drains form a junction. Inspection chambers or rodding eyes to be so placed that no length of drain exceeding 100 feet in length is without means of clearing or examination. Rodding eyes to be provided also where a change in the direction of the drain, or a branch connection, renders this desirable. All pipe connections to be by oblique bends and easy curves. All connections from the dwelling to be brought into the w.c. branch drain (as near the buildings as practicable) so that as few connections as possible are required to the common drain