Rise is the vertical height of each stair step; run is the horizontal depth. Together they determine stair comfort and safety.
Rise = the vertical height of each step. Run = the horizontal depth. Building codes regulate both for safety.
2 × rise + run = 24–25 inches (ideal). At 7" rise and 11" run: 2(7)+11 = 25" — perfect.
Number of steps = Total floor-to-floor height ÷ individual rise height.
A measurement of area in square feet, commonly used for rooms, homes, and land in the United States.
The amount of concrete needed for a project, typically measured in cubic yards or cubic meters.
A unit of lumber volume equal to a piece 1 foot long, 1 foot wide, and 1 inch thick (144 cubic inches).
Steel bars embedded in concrete to increase tensile strength, since concrete is strong in compression but weak in tension.
A paste of cement, sand, and water used to bind bricks, blocks, or stones in masonry construction.
A construction panel made of gypsum plaster pressed between two sheets of paper, used for interior walls and ceilings.