Sequence of operations

Comments

1. Prepare the work.

Make available the tools and materials. A work table is to be manufactured (See Fig. 10 in the Trainees' Handbook).

2. Enter all sizes required into the working drawing.

Derive the sizes from the dimensions of the beam for which the formwork is to be made. Prepare the size distribution of the cover straps in particular.

3. Cut up the boards.

The board width should not exceeded 140 mm. Do not place the rough edge of the board to the inside of the formwork!

4. Cut the stiffening cover straps to length.

Cover straps to have a width of approx. 55 mm with 25 mm projection for comer joints!

5. Put the cover straps on the arranged boards according to the size distribution made.

Use measuring rod, if necessary!

6. Nail the cover straps on the board-panel.

It is provisional nailing with short nails (40 mm). Use as many nails as necessary to make the panel stable in itself.

7. Nail the cover straps on the boards from the opposite side.

Turn over the provisionally nailed board-panel and nail it with 70 mm long nails. Two nails per board are to be diagonally arranged at the cover strap joint!

8. Clinch the nail tips.

Turn over the panel again and clinch the penetrated nail tips!

Sequence of operations

Comments

1. Study the formwork project and/or prepare a formwork sketch.

Dimensions in the instruction example are guidelines only!

2. Make available the required tools and materials.

Use sharpened sawing tools only!

3. Determine the column height and cut up the column.

Six columns are to be produced; the height depends on the height of the room (see Trainees' Handbook)! Cleats for fixing are to be provided at the sides of the columns!

4. Cut the trestle timbers to length.

For an assumed narrow side of the room of 3.5 m three trestle timbers are to be produced!

5. Fix the trestle timbers, cut up and nail diagonal bracing and erect the trestle.

Fix the trestle timbers through the cleats to the columns. Lean the right and left trestles and one side of the centre trestle against the wall! The trestles are to be put to the floor for nailing.

6. Secure the trestles provisionally.

Erect the trestles and drive wedges between the wall and end face of the trestle timbers. 3 persons are required for this work!

7. Level the trestles.

Use water level and levelling board for levelling. Adjust the height of the columns by means of packing wedges. Columns must be exactly perpendicular.

8. Fix the formwork bearers on the trestles.

Cut formwork bearers to length and put them on the trestles at certain intervals (60 to 70 cm). Ensure parallelism! Use nail pins for fixing.

9. Nail on the sheeting boards.

Cut sheeting boards to length and nail them onto formwork bearers. In view of later stripping, do not use nails which are longer than 50 mm!

10. Check the formwork for accuracy to size and for strength.

Make corrections in case of deviations. For bigger rooms place more columns under the trestles.

Sequence of operations

Comments

1. Study the formwork project.

Under the strip foundation to be erected there must be a horizontal layer of concrete (approx. 100 mm)!

2. Stretch the alignment lines.

The upper edges of the foundation determine the points of alignment of the lines. Use line supports or other measuring point aids!

3. Nail a formwork bottom board onto the foundation.

Nail on the formwork bottom board with steel nails exactly in alignment.

4. Erect the vertical post timbers
- Distances between the post timbers: 600 mm
- Length of the post timbers depending on the foundation height.

After erection of the post timbers fix them with nail pins. On top the post timbers are to be stabilize by stulls to be nailed on!

5. Fixing of the sheeting boards to the post timbers by nailing.

Start nailing from the bottom!

6. Fixing of horizontal walers (both sides) to the post timbers by nail pins.

The distance of the walers from the formwork bottom boards depends on the height of the foundation and is approximately 1000 mm.

7. Place steel reinforcement, if provided for.

8. Nail stulls on top of the side walls near the places of tieing (by tie wire).

The stulls must only slightly project over the formwork sheeting!

9. Tie the formwork from waler to waler at distances of 600 mm by means of tie wire.

Wire to be guided through previously bored holes in the formwork sheeting (see working drawing).

10. Check the whole formwork again for alignment and accuracy to size and stabilize it laterally by diagonal bracing to the subsoil.

Make corrections in case of dimensional deviations!

Sequence of operations

Comments

1. Study the formwork project. Prepare the work.

Make available the tools and materials.

2. Make two trestles (columns connected with trestle timber through cleats) for the longitudinal front of the wall.

Dimension the height of the columns so as to allow for two packing wedges, the formwork sheeting (sheeting boards)!

3. Erect the trestles and secure them laterally by wedges.

Trestles to stand exactly at the outside wall lines!

4. Nail on two board-connectors at the left and right of the beam wall support.

The 200 mm distance to the wall must correspond with the cover strap dimensions. Upper edge of formwork sheeting is equal to lower edge of beam!

5. Fix the diagonal bracings to the columns.

Nail bracings longitudinally and transversely to the wall!

6. Make the formwork bottom (See instruction example 1.1.):

Do not cut the cover straps flush but make allowance at both sides at least for formwork sheeting thickness, cover strap thickness and thrust-board width!

7. Put the prefabricated side panels on the cover strap projection at the left and right sides and connect them with stulls on the upper edges.

According to the brickwork support openings of the beam, the length of the side panels is to be dimensioned so as to permit that the supports are enclosed by the formwork at both sides!

8. Nail on a thrust-board at the lateral foot of the formwork panels.

Nail on from both sides!

9. Fix walers at the sides of formwork panels (upper end).

Fix walers laterally with nail pins!

10. Tie the formwork with tie wire at the walers.

The walers must also cover the brickwork support openings. The tie-wire tieing is to be provided immediately near the stulls!

11. Check the formwork again for alignment and accuracy to size.

Make corrections, if necessary.

Sequence of operations

Comments

1. Study the formwork project.

Make available the tools and materials.

2. Scribe the size of the column on the concrete bottom.

If steel reinforcements project from the concrete bottom, they are to be connected with the column reinforcement!

3. Nail the column rim on the concrete.

The inside dimensions of the column rim must allow for 25 mm sheeting thickness per side. The column rim is to be prefabricated from boards!

4. Erect one column comer.

Alternately insert two prefabricated panels in the column rim to form a comer and nail them together. If necessary, support them diagonally by boards!

5. Place the reinforcing steel.

6. Erect the second column comer.

Insert the remaining two panels in the column rim and nail them alternately! One panel must have a cleaning hole at the foot!

7. Erect the arch timbers.

Erect and fix with nails two arch timbers (100 mm x 100 mm) at both sides of each corner! Make sure that the column formwork is perpendicular!

8. Tie the column formwork.

Wrap column clamps of flat steel around the arch timbers and tighten them with steel wedges. The vertical distance between the column clamps should be approximately 700 mm. If no steel clamps are available, use wooden rims!

9. Check the alignment and accuracy to size.