313Cast-in-placeElectrical and plumbing
Cast-in-Place 2-Tiered KO Support
Two-tiered cast-in-place knockout support: two different pipe sizes, and couplings pass, on each tier.
In use.
Function
Pre-pour
Temporary securement device: positions and secures the utility before and during the concrete pour.
No rating
No load rating is published; the cured concrete carries the utility.
The cured concrete carries the utility.
Order
Order the part
Add parts to your list, then request a quote, a submittal package, or both. Pricing follows by reply.
Built to order
Height, in.
Hole ID: 1.00 (1.25 KO) / 1.25 (1.50 KO) / 1.50 (1.75 KO) / 1.75 (2.00 KO) / 2.00 in. (2.25 KO)
KO quantity, 1 to 12; crossbar width per the table
Your part number
313A__B__C__
Finish the selections to complete the request.
Knockouts
| 1 | 1.75 | 2 | 2.25 | 2.5 | 2.75 |
| 2 | 3.5 | 4 | 4.5 | 5 | 5.5 |
| 3 | 5.25 | 6 | 6.75 | 7.5 | 8.25 |
| 4 | 7 | 8 | 9 | 10 | 11 |
| 5 | 8.75 | 10 | 11.25 | 12.5 | 13.75 |
| 6 | 10.5 | 12 | 13.5 | 15 | 16.5 |
| 7 | 12.25 | 14 | 15.75 | 17.5 | 19.25 |
| 8 | 14 | 16 | 18 | 20 | 22 |
| 9 | 15.75 | 18 | 20.25 | 22.5 | 24.75 |
| 10 | 17.5 | 20 | 22.5 | 25 | 27.5 |
| 11 | 19.25 | 22 | 24.75 | 27.5 | 30.25 |
| 12 | 21 | 24 | 27 | 30 | 33 |
From the data sheet
Notes
- Two-tiered cast-in-place knockout support: two different pipe sizes, and couplings pass, on each tier.
- Patent pending.
- Angled feet conceal the support when the forms are removed.
- Galvanized rod; corrosion resistant.
- Rigid support: stable pipe and conduit positioning during the pour.
- Designed for demanding high-rise construction.
- Electrical and plumbing: positions PVC conduit, PVC-coated GRC, ENT and PVC- jacketed MC (NEC 352.30, 344.30, 362.30, 330.30) and sleeved PEX (IPC 305, UPC 312.2) in the pour, secured so they cannot float, shift or separate at joints; spacing per the specifications and the manufacturer.
- Drawings not to scale.