Resources
Free study material and jobsite references for concrete pros — ASTM test cheat sheets and calculators.
ConcretePeak Education Resources
Free educational plans, guides and construction references.
Extracted Info
Your saved info cards from plans and photos. Share or download them anytime.
ASTM field test quick reference
- C143 — Slump: 3 layers, 25 rods, 2 1/2 min, nearest 1/4 in.
- C231 — Air (pressure): 3 layers, 25 rods, nearest 0.25 %
- C1064 — Temperature: 3 in. cover, 2–5 min, nearest 1 °F
- C138 — Density & yield: net mass ÷ volume
- C31 — Cylinders: 4×8 in 2 layers, 6×12 in 3 layers
- C172 — Sampling: middle of batch, 15 min max span
Concrete calculators
Slab, footing, wall, column, rebar, sand and gravel — with PDF export.
Concrete images
Search millions of concrete finishes, textures, and project ideas.