OpenSpecEngineering

— An ever-growing collection of engineering reference material and calculators.

Fastener callouts, GD&T tolerance zones, alloy and bearing data, spring and drive references.

Wire gauge and cable references, PCB footprints and trace sizing, connectors, motors, grounding and EMI.

Rebar and structural-steel data, ASCE 7 design loads, and calculators for structures, geotech, hydraulics and surveying.

P&ID symbols, steam and solution property tables, and calculators for reactions, separations, fluid flow and heat transfer.

Process-chart and SPC references, engineering-economics and anthropometric data, and calculators for work measurement, quality and reliability.

Over 190 calculators spanning stress and circuit analysis, thermodynamics, structural and process design, and more.

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