Reference Charts
Printable engineering reference charts — steel sections, rebar sizes, wire ampacity, pipe schedules, material properties, and fastener data — every value verified against its primary published source.
The calculators on this site compute; these charts look things up. Each one is a printable table of the published dimensions, capacities, and properties engineers reach for daily — steel section geometry, rebar areas, conductor ampacity, pipe walls, material constants, fastener torque — kept on one clean page.
Every cell is verified against the primary published source named at the bottom of its chart. Derived values are computed from the source dimensions rather than transcribed, and anything that could not be verified was dropped rather than estimated.
All Charts
Bolt Torque, Tap Drill & Fastener Grade Chart
Dry tightening torques for metric 8.8/10.9/12.9 and SAE Grade 5/8 bolts (K=0.2, 75% proof), 75% tap drill sizes, and ISO 898-1 / SAE J429 grade strengths.
Updated August 16, 2026
Material Properties Table — Density, E, Yield & Thermal Values
Verified engineering properties for structural steel, stainless, aluminum, copper, concrete, wood, glass, and plastics: density, E, yield, k, and α.
Updated August 16, 2026
Pipe Schedule Chart — Sch 40/80/160 OD, ID & Wall (Steel, PVC, Copper)
Pipe schedule tables with OD, wall, and computed ID: steel NPS 1/8–12 per ASME B36.10M, PVC Sch 40/80 per ASTM D1785, and copper Type K/L/M per ASTM B88.
Updated August 16, 2026
Rebar Size Chart — US #3–#18 & Metric Diameters, Areas, Weights
ASTM A615 rebar sizes #3–#18 with nominal diameter, area, and weight in imperial and metric, plus 6–40 mm metric bars computed from π/4·d²·7850 kg/m³.
Updated August 16, 2026
Steel Beam Size Chart — W-Shapes, IPE, HEA & HEB Dimensions
Verified steel beam size tables: 42 common AISC W-shapes with depth, flange, area, Ix and Sx, plus full IPE 80–600 and HEA/HEB 100–600 metric sections.
Updated August 16, 2026
AWG Wire Gauge Chart — Diameter, Resistance & NEC Ampacity
AWG 14 to 500 kcmil conductor sizes with diameter, circular-mil area, and 75 °C copper resistance per NEC Chapter 9 Table 8, plus NEC 310.16 ampacities.
Updated August 16, 2026