#Answers

To estimate the cost of 1 m³ of C25 concrete (1:2:3 ratio), we need to consider the following:

1. Calculate the cost of 1 m³ concrete:

Concrete mix ratio (1:2:3):
- Cement: 1 part
- Sand: 2 parts
- Gravel: 3 parts

Assuming 1 m³ of concrete:
- Cement required = 1 part = 0.333 m³
- Sand required = 2 parts = 0.667 m³
- Gravel required = 3 parts = 1.000 m³

Cost calculation:
- Cement: 0.333 m³ x (1600 birr/quintal) / 0.05 m³/quintal = 10,656 birr
- Sand: 0.667 m³ x (50,000 birr/truck) / 50 m³/truck = 667 birr
- Gravel: 1.000 m³ x (48,000 birr/truck) / 50 m³/truck = 960 birr
- Labor:
- Daily laborer: 1 day x 450 birr/day = 450 birr
- Foreman: 1 day x 1,200 birr/day = 1,200 birr
- Carpenter: 1 day x 1,000 birr/day = 1,000 birr
- Machine (Mixer): 1 day x 1,600 birr/day = 1,600 birr

Total cost of 1 m³ concrete = 10,656 + 667 + 960 + 450 + 1,200 + 1,000 + 1,600 = 16,533 birr

@etconp

Thank you @Mebratu_bitew