Construction Cost Estimanting 4003 Cost Estimating/ Engineering Concrete Structures

1. Construction Cost Estimanting 4003Cost Estimating/EngineeringConcrete Structures Prepared by: Ebrahim A Alkooheji Instructor: Proff. Locurcio

2. Problem 5-1 • How many cubic yards of concrete are required to construct a: • 3000 psi reinforced concrete • 100’ x 30’’ x 12’’ • 8% Waste

3. COUNTINUE • Convert all units to LFT : • 100 ft • 30’’/12= 2.5 ft • 12’’/12= 1 ft 2. Find Volume: • 100’ x 2.5’ x 1’= 250 CF 3. Convert to cy: • 250/27= 9.25 CF

4. Countinue 4. Add 8% Waste: • 9.25 CYx 1+ (8/100)= 9.99 CY = 10 CY

5. Problem 5-3 • Calculate the cost of materials & labor to construct the rebar for the footing in problem 5-1: • Rebar #4 • Overlap is to be 18’’ • Allow 3’’ cover of the rebar at both ends. • Each bar is 20’ long • Include 6% sales tax on all material

6. Countinue • 5 piece of 20ft + 7ft is required for each span = 6 piece for each span • 6 piece #4 rebar x 4 = 24 pieces are required

7. Continue • A #4 rebar weight = 0.668lb/LF • Total span = 24 LF each span x 20 LF = 480 LF • Total weight = 0.668 lb/LF x 480 LF = 320.64 lb • Convert lb to Ton for RS-Means: 320.64 lb/2000= 0.16 Ton

8. Continue

9. Problem 5-32 • Prepare an estimate for the cost of material & labor to construct the continuous footing from the drawings: • 4000 psi fiber reinforced structural concrete. • Include cost of forms • Fiber reinforcing • Concrete • Placement labor & Equipment • Include 10% waste

10. Figures

11. Continuous Footing • Calculate total LF: • 16’ +22’+28’+13’+(28’+12’-16’=24’)+(22’-13’=9’) = 112 LF 2. Find volume: • 112 Lf x 2 x 1= 224 CF 3. Convert cf to cy: 224cf/27 = 8.29 = 8.3 CY 4. Add waste: 8.3 x (1+10/100)= 9.125 = 9.25 CY

12. Continuous Footing

13. Form work

14. Continue

15. Continue

17. Bahrain

18. The End