Sheet set S · Structural
Concrete
Slabs, footings, columns and walls — yards, bags, truck loads and cost.
Issued
1 of 6In the set, not issued
S-102
Rebar Calculator
Bar count, total linear feet, laps and tie wire for a slab or footing grid.
Not issued S-103
Footing Calculator
Continuous and pad footing volume, keyway, and concrete order quantity.
Not issued G-201
Concrete Cost Calculator
Delivered cost per yard with short-load, pump, fuel and finishing line items.
Not issued S-104
Column & Sonotube Calculator
Round and square column volume, tube diameter chart, bags per pier.
Not issued S-105
Concrete Wall Calculator
Wall volume with openings deducted, form area and ties.
Not issuedQuick reference
| Bag | Yield | Bags per cubic yard |
|---|---|---|
| 90 lb | 0.675 cu ft | 40 |
| 80 lb | 0.6 cu ft | 45 |
| 60 lb | 0.45 cu ft | 60 |
| 50 lb | 0.375 cu ft | 72 |
| 40 lb | 0.3 cu ft | 90 |
| Use | Common thickness |
|---|---|
| Patio, walkway, shed floor | 4″ |
| Residential driveway, cars and light trucks | 4″–5″ |
| Driveway with RV, dump trailer, delivery trucks | 5″–6″ |
| Garage and workshop floor | 4″–6″ |
| Detached garage / shop slab-on-grade with turndown | 4″ field + 12″–16″ turndown |
| Light commercial floor, forklift traffic | 6″+ |
These are common practice, not code. Thickness, reinforcement and base depth for your job come from your drawings, your engineer and your local building department.