Practical Construction Guides & Calculators

Accurate construction calculators and clear engineering-backed guides for concrete, foundations, drainage, retaining walls and repairs.

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Calculators

Estimate materials and quantities.

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Construction

Practical building guides.

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Foundation Repair

Diagnose cracks and settlement.

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Retaining Walls

Drainage, soil pressure and failures.

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Latest Guides

Construction

Movement Joint in Concrete: Expansion, Control and Isolation Joints

Learn what a movement joint in concrete is, including control, expansion, isolation and construction joints, spacing rules, and...

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Retaining Wall Drainage: What Keeps Walls from Failing
Retaining walls

Retaining Wall Drainage: What Keeps Walls from Failing

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 What Is Used in Prestressed Concrete? Materials, Tendons and Uses
Construction

What Is Used in Prestressed Concrete? Materials, Tendons and Uses

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 What Is Concrete Cloth? Uses, Cost and How It Works
Construction

What Is Concrete Cloth? Uses, Cost and How It Works

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Featured Calculators

Rafter Spacing Calculator: Number of Rafters, Span, Pitch and Lumber Size

Rafter Spacing Calculator: Number of Rafters, Span, Pitch and Lumber Size

Estimate roof rafter count, rafter length, spacing layout, and basic lumber quantity with this...

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 Deck Joist Spacing Calculator

Deck Joist Spacing Calculator

Use this deck joist spacing calculator to estimate joist count and layout for 12-inch,...

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 Pea Gravel Calculator: Yards, Tons, Bags and Cost

Pea Gravel Calculator: Yards, Tons, Bags and Cost

Quick Summary Multiply your area in square feet by the depth in feet. Divide...

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 Free Concrete Slab Price Calculator

Free Concrete Slab Price Calculator

Use this free concrete slab price calculator to estimate slab cost by size, thickness,...

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 Gutter Installation Cost Calculator

Gutter Installation Cost Calculator

Use this free gutter installation cost calculator to estimate gutters, downspouts, guards, removal and...

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 Concrete Cinder Block Calculator: Blocks, Mortar & Wall Cost

Concrete Cinder Block Calculator: Blocks, Mortar & Wall Cost

Use this concrete cinder block calculator to estimate blocks, mortar, openings, waste, core fill...

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 Soffit Calculator: Estimate Square Feet, Vents & Cost

Soffit Calculator: Estimate Square Feet, Vents & Cost

Use this soffit calculator to estimate soffit square feet, panel quantity, vented soffit area,...

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 Concrete Calculator: Estimate Concrete Volume and Cost

Concrete Calculator: Estimate Concrete Volume and Cost

Estimate concrete volume, bags, weight and cost for slabs, footings, piers and post holes...

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