🏗️ CALCULATION OF STAIRCASE CONCRETE
Accurate estimation of staircase concrete is essential for construction planning, material procurement, and cost estimation.
Let’s understand how to calculate the concrete volume of an RCC staircase step by step! 📐
📌 Given Data:
🔹 Horizontal run = 16 ft
🔹 Total rise = 8 ft
🔹 Waist slab thickness = 6 inches (0.5 ft)
🔹 Tread (going) = 12 inches (1 ft)
🔹 Riser = 6 inches (0.5 ft)
🔹 Stair width = 4.5 ft (4 ft 6 in)
🔹 Landing dimensions = 5 ft × 4.5 ft
🔹 Landing slab thickness = 6 inches (0.5 ft)
🔹 Number of steps = 16
1️⃣ Volume of Waist Slab
Sloping length:
L = √(16² + 8²) = 17.89 ft
Volume = Sloping length × Thickness × Width
= 17.89 × 0.5 × 4.5
✅ Waist slab volume = 40.25 ft³
2️⃣ Volume of Landing Slab
Volume = Length × Width × Thickness
= 5 × 4.5 × 0.5
✅ Landing slab volume = 11.25 ft³
3️⃣ Volume of Stair Steps (Wedges)
Volume of one step:
= ½ × Tread × Riser × Stair width
= ½ × 1 × 0.5 × 4.5
= 1.125 ft³
For 16 steps:
= 16 × 1.125
✅ Steps volume = 18.00 ft³
4️⃣ Total Concrete Volume
Total = Waist slab + Landing slab + Steps
= 40.25 + 11.25 + 18.00
🏆 Total = 69.50 ft³ ≈ 1.97 m³
📌 Important Site Note: These are illustrative quantities based on the stated dimensions. Confirm the actual stair geometry, number of risers, landing arrangement, and structural drawings before ordering concrete. The calculation assumes the landing slab does not overlap the measured waist slab and that the step wedges are additional to the waist slab.
For practical estimation, also account for wastage and any additional beams or supports specified in the structural drawings.
📚 Follow @ETCONp for more civil engineering calculations, construction tips, quantity surveying, and site knowledge.
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https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
Accurate estimation of staircase concrete is essential for construction planning, material procurement, and cost estimation.
Let’s understand how to calculate the concrete volume of an RCC staircase step by step! 📐
📌 Given Data:
🔹 Horizontal run = 16 ft
🔹 Total rise = 8 ft
🔹 Waist slab thickness = 6 inches (0.5 ft)
🔹 Tread (going) = 12 inches (1 ft)
🔹 Riser = 6 inches (0.5 ft)
🔹 Stair width = 4.5 ft (4 ft 6 in)
🔹 Landing dimensions = 5 ft × 4.5 ft
🔹 Landing slab thickness = 6 inches (0.5 ft)
🔹 Number of steps = 16
1️⃣ Volume of Waist Slab
Sloping length:
L = √(16² + 8²) = 17.89 ft
Volume = Sloping length × Thickness × Width
= 17.89 × 0.5 × 4.5
✅ Waist slab volume = 40.25 ft³
2️⃣ Volume of Landing Slab
Volume = Length × Width × Thickness
= 5 × 4.5 × 0.5
✅ Landing slab volume = 11.25 ft³
3️⃣ Volume of Stair Steps (Wedges)
Volume of one step:
= ½ × Tread × Riser × Stair width
= ½ × 1 × 0.5 × 4.5
= 1.125 ft³
For 16 steps:
= 16 × 1.125
✅ Steps volume = 18.00 ft³
4️⃣ Total Concrete Volume
Total = Waist slab + Landing slab + Steps
= 40.25 + 11.25 + 18.00
🏆 Total = 69.50 ft³ ≈ 1.97 m³
📌 Important Site Note: These are illustrative quantities based on the stated dimensions. Confirm the actual stair geometry, number of risers, landing arrangement, and structural drawings before ordering concrete. The calculation assumes the landing slab does not overlap the measured waist slab and that the step wedges are additional to the waist slab.
For practical estimation, also account for wastage and any additional beams or supports specified in the structural drawings.
📚 Follow @ETCONp for more civil engineering calculations, construction tips, quantity surveying, and site knowledge.
🏗️ Build Smarter, Build Stronger!
━━━━━━━━━━━━━━
🌐ለተጨማሪ መረጃ እና ሌሎች የኮንስትራክሽን ዘርፍ ዜናዎች የ YouTube ገፃችን ከታች ባለው ሊንክ በመግባት SubScribe አርገው ቤተሰብ ይሁኑ👇
https://youtube.com/@ethiopianconstruction7?si=ils307xXQQpIdCwG
@etconp
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