PRECAST & PRESTRESSED CONCRETE
Product overview
Prestressed Plank is produced in varying thicknesses to meet project requirements. A 3½" Plank is the recommended minimum with ½" strand, although 3" has been used. The 4" Plank is the most common thickness and should be used for smaller projects and for “infill” areas where other products may not suit. Plank widths are tailored to suit project requirements with 10ft being typical. GPRM Prestress will provide the most economical layout width on our shop drawings. When a thickness over 4” is required, other products should also be considered.
Key specifications
| Specification | Source detail | Selection notes |
|---|---|---|
| Nominal width | 10 ft typical | Project widths can be tailored |
| Section depths in PP table | 3½, 4 and 5 in | Standard and composite properties shown |
| Typical topping in PP drawing | 3½ in | Coordinate with project design |
| Prestressing strand in PP drawing | ½ in | See the strand and reinforcing layouts |
Design & detailing notes
- The PP sheet shows load/span curves for shored construction, with allowable live load in addition to a 15 psf superimposed dead load.
- Planks under 12 ft wide require nominal reinforcing for production and handling, as detailed in the PPR sheet.
- Availability of widths, thicknesses and economical layouts should be confirmed with GPRM. Custom plank thicknesses can be produced.
- The reinforcing sheet includes end-bearing notches, blockouts and alternate weld ties. Erection-stability ties may be required for the overall floor system.
- The additional M1/M3 and M2 downloads are related bridge and drainage-channel references, rather than the prestressed-plank PP/PPR section sheets.
- PLANK PACKAGE.pdf: PP, PPR
- SHT M-1 AND M-3.PDF: related bridge sections
- M2.pdf: related stormwater infiltrator / drainage channel
This summary supports preliminary product selection. Refer to the complete source drawings and coordinate final dimensions, loads and reinforcing with GPRM and the project engineer. The supplied sheets do not show an issued or revised date.
