![]() ![]() Volume of Landing = Length x Width x Thickness = 8.5 x 3 x 0.5 = 12.75 cft Step 4: Find the Concrete Volume of Waist Slab?Īs we know that, It is the right angled triangle in order to find the inclined length we use the Pythagoras theorem So, Total Concrete = First Flight Concrete Volume x 2 = 9.163 x 2 = 18.326 cft Step 3: Find the Concrete Volume of Landing Space? We know that the second flight are having the same measurements: The above calculation is only for one flight. Therefore, the total volume of concrete required for steps on first flight = Volume x No. The Volume of Concrete for one step = 0.833 cft Volume of Concrete for one step = 1/2 x 0.5 x 0.833 x 4 The Volume of Concrete for one step = 1/2 x riser x tread x Length of Step The Volume of Concrete for one step = Area of one Step x Length of StepĪs you know that the shape of stair step is right angled triangle so we know the formula for the area of right angled triangle is: of Risers – 1 = 12 – 1 = 11 Treads Step 2: Find the Concrete Volume for One Flight (All Steps)? of Riser = Height of the Flight / Riser = 12 / 0.5 = 12 Risers Width or Length of Steps = 4 ft Step 1: Find the Number of Risers and Treads? Staircase Concrete Calculator: Quantity of Concrete Volume for Staircase: Concrete Calculation Formula for Landing = Length x Width x Thickness Staircase Calculation Formulas.Concrete Calculation Formula for Waist Slab = Length x Width x Thickness.Length of Waist Slab Formula = √ (Horizontal Length)² + (Height)².Concrete Calculation Formula for Flight = Volume of one Step X No, of Treads.Concrete Calculation Formula for Step = 1/2 x Riser x Tread x Length of Step.We need to calculate concrete volume for staircase s for each component separately, then add them all up to find the total volume of concrete for dog legged staircase s. The vertical (up and down) portion of a stairway between each tread is known as a riser. The flat area you step on is known as the tread. The step is made up of the tread and the riser. The series of steps from floor to the landing. Various Parts of Staircase or Concrete Stairs: Waist slab:Ī stair’s slab that slopes upward from the floor slab to the landing slab is referred to as the waist slab. The flights do not have to be equal, and frequently are not. Definition of Staircase: A flight or series of flights of steps and a supporting structure connecting separate levels.Ī dog legged Staircase is a stair configuration that has a quarter-landing before turning at a right angle and continuing upwards. ![]()
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