lecture about Formworks and Scaffolding Estimate

Lecture about Formworks and Scaffolding Estimate.

1. Formworks and scaffolding (lumber)

2. Structures that have formworks: 1. Footing 2. Column 3. Beam 4. Suspended slabs 5. Retaining Walls 2

3. Common materials used Formwork is the temporary mold or structure into which concrete is poured to give it the desired shape and structure. Plywood - available in different thicknesses and can be reused multiple times if properly maintained. Fiberboard - lightweight, easy to cut, and provides a smooth finish to the concrete surface Particleboard - made from wood particles and adhesive Plastic Forms - lightweight and modular plastic panels that interlock to form the desired shape Metal Formworks - Steel and aluminum formwork Engineered Wood Products - offer strength and stability and can be used for multiple construction cycles 3

4. plywood Sizes 4 feet x 8 feet: This is a standard size widely used for construction purposes. 3 feet x 6 feet: For smaller projects Thickness 1/4 inch (6mm): Often used for interior applications and lighter-duty projects. 1/2 inch (12mm): A versatile thickness suitable for various construction applications, including formwork for walls and slabs. 3/4 inch (18mm): Commonly used for heavier-duty applications 4  

5. Parts of a formworks

6. sheating

7. footing 7   Where: P = Perimeter t = Thickness of the Footing n = Number of Footing    

8. column 8   Where: H = Height of Column h = Formworks height P = Perimeter n = Number of Column      

9. beams 9 Where: P = Perimeter L = Length of Beam      

10. slab 10 Where: W = Width L = Length of Beam    

11. Studs and wales support

12. Board ft. 12 Where: a = Width, in b = depth, in L = Length of Wood, ft n = no. of pcs     :       :        

13. footing 13

14. COLUMN 14

15. Staging and scaffolding

16. Board ft. 16     :       :            

17. problem 17 A reinforced concrete building has 9 columns with a clear height of 4.00 meters. Determine the required staging under the following specifications: Vertical Support: 2” x 3” lumber Horizontal Supoort : 2” x 2” lumber Diagonal Braces: 2” x 2” lumber

18. perspective 18

19. Staging & scaffolding table 19

20. Roofing materials

21. Inclusions of roofing materials G.I. Sheet Roofing Gutter Flashing Ridge, Valley and Hipped Rolls Accessories 21

22. Roofing and gutter

23. Roof flashing

24. Ridge, valley and hip rolls

25. g.i. sheets End Lapping: 25cm to 30 cm Side Lapping: 1 ½ or 2 ½ corrugations 25

26. Table multiplier 26