1. CONCRETE FORMWORK
Formwork

2. Contents:
Mould Functions
Mould Materials
Mould Construction

3. FORMWORK CONSTRUCTION

4. Introduction
The purposes of formwork construction is as a mould to fit any shape of specific structures (i.e. beams, column, slab, etc.)
A variety of manufactured metal forms (steel and aluminum) are available in a range of sizes, along with assembly and bracing systems. (refer Figure 8.12, pg 141, Spence and Kultermann)
Also, Plywood with wood or metal bracing is used for site-built forms. Other plywood made with waterproof glue also used.
Solid lumber (special wood) and wafer board, molded plastic and waxed cardboards forms are also materials in concrete form construction.

5. Formwork Function Two types of mould in concrete
Precast Concrete Mould
Easy to dismantle
Movable
Recycle
Cast-insitu Concrete Mould
Not easy to move
Can be recycled if can be used

6. Formwork Function (cont’d)
Formwork Usage:
Foundation construction, Beam, Slab, Staircases, Curves, etc.
Formwork are used to form concrete with any shape of structures until concrete hardening (and can be stand alone) after placing.
Formwork is a temporary construction and can be dismantle after concrete form.

7. Formwork Materials Formwork Materials: (1) Wood and Plywood
(2) Metal forms - steel and aluminum
(3) Fibre glass and fibre plastic

8. Formwork Materials (cont’d)
(1) Wood and Plywood
Widely usage – precast concrete and concrete cast in-situ.
Easy to get and workability.
Half dried soft wood is a good materials for the concrete formwork.

9. Formwork Materials (cont’d)
(2) Metals form – steel and aluminum
Limited usage
With special skills and specific construction
Precast unit usage
Durability and can be recycled
Steel plate – upper construction and roof construction for storeyed building

10. Formwork Materials (cont’d)
(3) Fibre glass and fibre plastic
Special usage
Special design for structure construction

11. STEEL FORMWORK

12. ALUMINUM FORMWORK

13. PLYWOOD FORMWORK
Plywood Formwork

14. Concrete Formwork

15. Concrete Formwork Panel

16. Formwork Plates, Wing, Nut, Pins

17. Aluminium Formwork

18. Twin Plastic Formwork

19. Formwork Construction
Quality – stable and strong, exact location, exact dimension, formwork dismantle facilities.
Safety – to workers, structure and equipment, follow standard requirement and regular checking.
Economic – low cost, easy to get, recycle products, construction methods, types of formwork and skills workers.

20. Formwork Construction Method
Formwork construction - Rajah 11.2 – 11.7, m/s 276 – 280 – TBT.
Fixed method for retaining wall formwork – Rajah 11.8 – 11.9, m/s – TBT.
T-Column Leveling– Rajah 11.10, 11.11, dan – m/s – TBT.
Slab Construction (fibre plastic formwork) – Rajah – m/s 285 – TBT.

21. Formwork Construction Method (cont’d)
Construction of Curve Retaining Wall Formwork – Rajah – m/s 286 – TBT.
Formwork dismantle – side formwork, bracing, and T-column.

22. Formwork Dismantle Period
Bil.
Formwork Part
Period 1
Side of beam, column and retaining wall
2 – 6 days 2
Lower part of beam & slab (without imposed load)
7 – 14 days 3
Side board (with imposed load)
Not less than 7 days 4
Lower board (with imposed load)
28 days
(no load to be imposed before 28 days)

23. Safety Procedures (1) Use of formwork materials should follow
standard requirement.
(2) Stable formwork installation.
(3) Formwork stability checking before concrete
placement.
(4) Close boundary area for formwork
construction.
(5) Formwork surface should be sprayed with
oil, foam, and white paint (limestone).
(6) Clean concrete placement area.
(7) Signboard display.

24. Column Formwork

25. Formwork -Stair Props

26. Formwork -Stair Treads

27. Slab, Wall and Column Formwork

28. Self Climbing System Formwork

29. Formwork

30. Permanent Formwork

31. Supervision Work – Steel and Formwork (beam) Checking

32. Formwork for Reinforcement Concrete Retaining Wall

33. Formwork for Ground Beam

34. Formwork for Beam

35. Formwork for Staircases

36. Formwork for Pilecap

37. THANK YOU