Concrete Trench Calculator
This concrete trench calculator sizes trench-fill foundations and utility duct banks: length × width × depth, with the waste allowance trench work demands. For duct banks, subtract conduit displacement with the encasement calculator.
इस कैलकुलेटर का उपयोग कैसे करें
- अपने आयाम दर्ज करें — लंबाई के लिए फीट, मोटाई के लिए इंच.
- विकल्प समायोजित करें — अपव्यय प्रतिशत, बैग का आकार और आपके स्थानीय कंक्रीट की कीमत।
- अपने परिणाम पढ़ें — टाइप करते ही आयतन, बैग, वजन और लागत लाइव अपडेट होते हैं।
सूत्र
Trench volume = Length × Width × Depth हल किया गया उदाहरण: A 30 ft trench, 18 in wide × 18 in deep: 30 × 1.5 × 1.5 = 67.5 ft³ ÷ 27 = 2.5 yd³ — order 2.75+ yd³; trenches over-break.
Trench-fill foundations pour the excavation full of concrete instead of building up blockwork from a footing — fast, and common in the UK. The volume math is a long, deep rectangle.
A concrete duct bank calculator starts the same way — trench length × width × depth — then subtracts the conduits. For a bank with significant conduit volume (4+ ducts of 4 inch), use our encasement calculator to net out the pipe displacement.
Real trenches are never neat: sides slough, bottoms undulate, and widths grow beyond the bucket size. Use 10% waste minimum, and 15% in loose soils.
अक्सर पूछे जाने वाले प्रश्न
concrete trench calculator के बारे में सामान्य प्रश्न।
How much concrete to fill a trench?
Length × width × depth in feet ÷ 27 for cubic yards. A 50 ft × 2 ft × 2 ft trench needs 200 ft³ ≈ 7.4 yd³ — always round up for over-break.
What is a duct bank?
A concrete-encased group of electrical conduits in a trench. Compute the trench volume here, then subtract conduit displacement (a 4 in conduit displaces 0.087 ft³ per foot).
How much extra should I order for trench work?
10% minimum, 15% in sandy or loose soils. Trench sides collapse and bottoms are uneven — trenches consistently take more than the tape measure says.
Is trench fill cheaper than footings plus blockwork?
It uses more concrete but far less labor and time. For narrow deep foundations it's often the economical choice.
संबंधित कैलकुलेटर
कंक्रीट कैलकुलेटर परिवार के और उपकरण।