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DraftToolbox

Multi-Industry Layout Tools, Calculators & Reference Sheets

Architectural Dimensions

Perform running additions and subtractions for job site blueprints using feet, inches, and fractions down to 1/16".

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Beam Depth Calculator

Verify structural lintel and header estimations using rapid code span-to-depth engineering rules of thumb.

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Sheet Metal Bend Allowance

Compute flat blank material distributions, localized bend allowances, and exterior setbacks for metal fabrication.

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Bolt Circle Layout Coordinator

Compute precise X and Y coordinates for circular bolt patterns, flange holes, and rotational machining matrices.

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Concrete Volume & Void System

Estimate raw concrete cubic yardage requirements for pours while cleanly subtracting interior void blockouts.

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Foundation Square-Up Calculator

Verify project layout squareness using the 3-4-5 rule. Instantly calculate matching corner-to-corner hypotenuse diagonals.

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Spur Gear Parameters

Generate mechanical tooth pitch diameters, outside circles, and pitch spacing constraints for involute spur gears.

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Pipe Offset & Travel Calculator

Calculate center-to-center travel distances, roll sizes, and raw cut adjustments for plumbing and piping layouts.

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Pipe Volume & Weight System

Compute running internal fluid volumes and empty structural cross-sectional steel piping weights based on nominal metrics.

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Roof Pitch & Rafter Length

Analyze residential slope profiles, calculating rise-over-run ratios, rafter spans, and angle grades.

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Drawing Scale Converter

Calculate scale factors, CAD viewport multipliers, and instantly convert paper layout measurements to real-world sizes.

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Machinist Speed & Feed

Calculate rotational speeds (RPM) and tooling feed rates (IPM) for high-speed automated CNC milling or drilling.

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Square Footage & Multi-Area

Calculate flat surface face plane dimensions. Chain-add distinct zones while embedding custom waste allocations.

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Stair Riser & Tread Layout

Calculate uniform stair riser stepping counts, precise step heights, and running horizontal layout measurements.

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Tap Drill Size & Threads

Lookup machine screw thread pitch specs, decimal equivalents, and match correct pilot drill bits for taps.

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Thermal Expansion Calculator

Calculate linear expansion displacements for pipeline layouts across fluctuating process temperatures.

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Standard Trade Unit Converter

Instantly shift shop floor dimensions across empirical, engineering, architectural fraction, and metric domains.

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Tank & Vessel Volume

Calculate containment capacity parameters for cylindrical and rectangular processing vessels or storage tanks.

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