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I have a area 25ft. x3ft. x 4" thick, how many bags of concrete will I need?

- datro8

Depends on the weight of the bag of Sacrete or Quikrete bought.

25' * 3' * 0.334' = 25.05 cubic feet

You need at least 25.05 cubic feet of concrete or 0.93 cubic yards (25.05/27). I suggest you round it to 27 cubic feet (1 cubic yard) for subgrade inconsistencies.

Cubic feet needed / yield per bag in cubic feet = number of bags needed

Calculating for 27 cubic feet (1 cubic yard):

80# bag yields approximately 0.60 ft^3, so 45 bags,

60# bag yields approximately 0.45 ft^3, so 60 bags,

40# bag yields approximately 0.30 ft^3, so 90 bags

Depending on the cost per bag (especially if you consider your time is worth anything), I would call a local concrete ready mix company and ask them what a short load of 1.1 yards of concrete would cost.

FYI, a short load is a load of concrete under 3 yards on a truck.

25' * 3' * 0.334' = 25.05 cubic feet

You need at least 25.05 cubic feet of concrete or 0.93 cubic yards (25.05/27). I suggest you round it to 27 cubic feet (1 cubic yard) for subgrade inconsistencies.

Cubic feet needed / yield per bag in cubic feet = number of bags needed

Calculating for 27 cubic feet (1 cubic yard):

80# bag yields approximately 0.60 ft^3, so 45 bags,

60# bag yields approximately 0.45 ft^3, so 60 bags,

40# bag yields approximately 0.30 ft^3, so 90 bags

Depending on the cost per bag (especially if you consider your time is worth anything), I would call a local concrete ready mix company and ask them what a short load of 1.1 yards of concrete would cost.

FYI, a short load is a load of concrete under 3 yards on a truck.

- Dirtman
- Expert
**Posts:**574**Joined:**Sat Jan 21, 2006 2:04 pm**Location:**California

2 posts
• Page **1** of **1**