subdrain

building subdrain

That portion of a building drainage system which does not drain by gravity into a building sewer; wastes from the subdrain are collected in a sump and discharged by a pump.
References in periodicals archive ?
The subdrain pits are expected to halve the volume of water entering the buildings, to 150 tons per day.
Tenders are invited for work consists class 10 grading, storm sewer and subdrain installation, mainline pcc paving, curb and gutter, sidewalk, permeable interlocking pavers, construction of bioretention areas, soil quality restoration, erosion control, pavement markings, and final surface restoration.
A subdrain is necessary under the pool to remove subsurface water and reduce the chance of such damage.
In general, locate subdrain pipe in side-road ditches or under shoulders to prevent water from reaching the roadway area; lay pipe on both sides of the pavement to control a high water table.
Of Drain From B (D/S) Qtrs No 97/220 To B (D/S) Qtrs No 133/365 And Subdrain And Branch Drain Behind And Side Of C (D/S) Qtrs No 30/91 To C (D/S) Qtrs No 31/96 To Near Transformer Shed At Urjanagar Colony.
In general, locate subdrain pipe in sideroad ditches or under shoulders to prevent water from reaching the roadway area; lay pipe on both sides of the pavement to control a high water table.
Tenders are invited for works include approx 6 " hot mix asphalt; 6" thick pcc curb and gutter; 6" subbase; 8" subgrade preparation; also includes installation of sanitary sewer, water main, services, subdrain, and all other miscellaneous work; see outside link.
Tenders are invited for work includes approx 5,280 lf of subdrain, hdpe, perf, 2" dia; 1,190 lf of subdrain, hdpe dual wall, non perf, 6" dia, field drain collector; 585 lf of storm sewer, trenched, hdpe dual wall, perforated, 15" dia; 127 lf of storm sewer, trenched, hspe dual wall, perforated 12" dia; 92 lf of trench drain, 4"; 6,711 cy of excavation, class 10; 3,055 cy of topsoil, on-site; 1,431 sy of subbase, washed sand 4" thick, under skinned infield material; 1 ea of connection to existing water services; 1 ls of clearing and grubbing; 1 ls of landscape irrigation system; see outside link.
Tenders are invited for work includes approx 7,270 lf of subdrain, case d-type 2, 6"; 605 lf of subdrain, case a-type 1, 6"; 2,240 ton of porous backfill; 178 sy of full depth patches, pcc, 9"; 20 ea of open-throat curb intake sediment filter; 1 ls of traffic control; .
Tenders are invited for work consists of approx 42 cy excavation, cl 10, waste; 77 lf of 15" rcp storm sewer; 2,988 lf of 6" longitudinal subdrain, hdpe; existing storm manhole connection, 1 ea; 218 sy of 7" pcc pavement; 126 sy of 4" pcc sidewalk; 237 sy full depth patches, pcc by area; 42,327 sy milling; painted pavement markings, solvent/waterborne, 165.