Plywood wall formwork uses main facing sheets and smaller parts around openings, corners and pour stops. Those details affect fit, handling and the concrete surface. Show us the wall you are forming, a photo or an elevation sketch; our factory helps choose the plywood face and develop sheets or cut parts around the coordinated design.
For wall faces and returns, start with film faced shuttering plywood. Compare brown film faced plywood for the required working surface, with the concrete finish assessed through the project trial.
Coordinate both concrete faces on one drawing set
Start with the wall plan, elevations and sections using consistent gridlines and levels. Mark wall thickness, opening positions, changes in thickness, internal corners and the limits of each pour. Name the two faces so references such as left, inside or back cannot be confused.
A view from the opposite side reverses the apparent left and right positions. Use grid references or measured coordinates for openings and inserts instead of relying on a photograph or an unlabelled sketch. Connect each panel ID to a specific face and orientation.
Dimension the concrete surface separately from the outside of the framing. Plywood thickness and corner overlaps belong in the fabrication detail. If a facing or liner changes thickness, check the resulting concrete dimension and adjoining closures before releasing revised parts.
Provide the pour conditions that control the design
Wall height alone does not establish the pressure on the plywood or the required tie arrangement. Record the planned concrete, placing method, rate and temperature conditions for the responsible formwork designer. Identify self-compacting concrete or other conditions that require particular consideration.
APA's concrete-forming guidance identifies pour rate, temperature, mix characteristics, vibration and form height among the factors affecting pressure. A general article cannot turn those variables into a universal plywood thickness or tie spacing.
Confirm the selected panel construction, direction and support arrangement against that design. A visually similar black or brown facing is not sufficient evidence that another panel has the same properties. Keep proposed material substitutions visible in the technical review.
Detail the opening as a three-dimensional box
A door or window opening has two jambs, a head and, where applicable, a sill. Show the required concrete opening dimensions and the complete box-out section, including facing thickness, framing and removal method.
The blank size for a return depends on how it meets the wall-facing sheets. It may run between them, overlap them or incorporate a specific rebate. Do not deduct two panel thicknesses by habit: draw the actual junction and establish the finished concrete dimension first.
Record chamfers, recesses, drips and embedded frames as separate features. A standard rectangular cutout in the wall face does not communicate their depth or location. Give left- and right-hand parts different IDs when details are mirrored.
Consider restraint of the box-out in the formwork design. Fresh concrete can act on its sides and underside; a light internal frame that merely holds the shape before the pour may not provide the required restraint during placement.
Resolve tie conflicts before cutting the facing
Overlay the proposed ties, supports and opening boxes on the same coordinated drawing. Check for conflicts with reinforcement, sleeves, embedded items and access needed to install and tighten the system components.
A tie position that falls within an opening cannot simply be omitted or shifted to the nearest clear point. Ask the formwork designer for the revised arrangement, including any affected walings, supports and connectors. Record the change before producing another hole pattern.
| Conflict | Detail to resolve before fabrication |
|---|---|
| Tie intersects a box-out | Revised designed restraint and a coordinated hole pattern |
| Tie meets reinforcement or a sleeve | Agreed position that preserves both the permanent and temporary works requirements |
| Opening meets a panel seam | Supported facing edges, seal detail and removable return pieces |
| Corner has limited access | Connection, tightening and removal sequence for the actual system |
| Stop end contains a waterstop | Closure arrangement that maintains its specified position and condition |
Define the finished tie-hole treatment separately. A decorative plug or a flush surface repair does not automatically provide a required watertight closure.
Draw returns and pour stops through the joint
At a corner, show which facing continues and which closes against it, where its edge is supported and how the connection is released. Check the concrete corner line as well as the outside frame geometry. A convenient overlap should not change the specified wall thickness.
At a pour stop, coordinate continuing reinforcement, couplers, waterstops and any specified joint preparation. Identify the pieces that can be removed independently. A closure that fits around the reinforcement before casting may become trapped afterwards if the disassembly sequence was never considered.
One-sided formwork requires its own designed load path. It is not a double-sided arrangement with the inaccessible face and through-ties omitted. Describe the actual boundary, available restraint and working space when requesting the formwork solution.
HSE's temporary-works guidance provides the broader principle: temporary structures need planned design, installation and checking for their intended use. Local rules and the project design govern the actual arrangement.
Coordinate the architectural pattern with the structural arrangement
For exposed concrete, draw the visible sheet joints and tie-hole pattern on the elevation. Identify which seams are intentional and which should be avoided. Check that corner pieces and closures do not introduce an unexpected narrow strip beside an otherwise regular grid.
Coordinate the architectural tie and joint pattern with the selected formwork system. The appearance layout must also satisfy its structural and installation requirements.
Distinguish a visual tie-hole feature from a working tie. Adding a decorative point does not replace a required restraint, and moving a working tie for symmetry still needs design coordination. Include the intended closure appearance in the finish reference.
Keep the final closing sequence inspectable
Define when reinforcement, inserts, opening dimensions and cleaning will be checked while accessible. Use the project method to sequence the open face, reinforcement, services, box-outs and final closure. Do not let a delivery sequence force premature closing.
Provide for removing debris from the base and checking the closures afterwards. Identify how concrete will be placed and compacted around congested openings without relying on an inaccessible route discovered during the pour.
Record the current drawing, panel IDs, opening measurements and completed checks for each wall area. If a panel is modified after inspection, review the affected detail again rather than treating the earlier record as covering the change.
Plan your wall facing order
Start with a wall photo, use description or available elevation. We help choose the plywood and develop the main sheets, opening returns, corners and stop-end parts.
Before production, agree the coordinated face drawings, part IDs, revision, construction, dimensions, orientation and quantities. Specify factory or site machining and edge treatment; for visible concrete, keep the finish reference and trial details with the order.
For drawing revisions, use our formwork revision and insert-coordination guide.
Wall formwork plywood buying questions
Can the factory prepare opening returns and corner pieces?
Yes. Develop a representative sample, then agree the current part drawings, orientation, dimensions and edge treatment before production.
Can a tie hole be moved to suit a plywood cut?
The formwork designer must resolve a changed tie arrangement. Update the coordinated hole pattern and affected parts before cutting.