PDF Brochure REINFORCED U SHAPE DRAIN 
| |  | U - Shape Drain | | U-Shape Drain with A
Dry-Weather Flow Section |
OKA REINFORCED CONCRETE OPEN DRAINS ARE DEVIDED INTO :
- OPEN U SHAPE DRAIN
- OPEN U SHAPE DRAIN WITH A DRY-WEATHER FLOW SECTION
|
Standard length = 1000 mm
Designed for waterways where an open channel is necessary The precast units are easily handled and laid on prepared base Holes can be formed in the walls for lateral lines to discharge into the channel
ADVANTAGES - Less Supervision
- No Formwork
- Less Labour
- Easy Handling
- Quick Installation
- High Factory Quality
|
DESIGN CRITERIA
- OKA standard and supersize U-Drains are designed in accordance with BS 8110 : 1985 and based on the following types of loading condition :
Type 1 : UDL of 5 kN/m2 behind the wall
Type 2 : Surcharge of 600mm at the back of the wall (see figure) 
- Minimum cover Standard = 20 mm
- Concrete grade shall be 40 N/mm2
- Bulk density of soil backfill to be 1760 kg/m3
- Angle of internal friction of soil back fill to be 30o
|
OKA U-SHAPE DRAIN
STANDARD DIMENSIONS  |  | OKA U-SHAPE DRAIN
WITHOUT A DRY WEATHER FLOW SECTION | OKA U-SHAPE DRAIN
WITH A DRY WEATHER FLOW SECTION |
 | Standard Length = 1 metre
Non-standard sizes and special loads can also be designed and manufactured upon request. |
OKA SUPERSIZE U-SHAPE DRAIN
STANDARD DIMENSIONS  |  | OKA SUPERSIZE U-SHAPE DRAIN | OKA SUPERSIZE U-SHAPE DRAIN
WITH A DRY WEATHER FLOW SECTION |
 | Standard Length = 1 metre
Non-standard sizes and special loads can also be designed and manufactured upon request. |
 | Standard Length = 1 metre
Non-standard sizes and special loads can also be designed and manufactured upon request. |
Go to Top
|
