Structural Engineering

Structural calculations with the code section attached.

Every value carries the governing code section and equation. 31 modules across concrete, steel, wood, masonry, seismic and loads — with an audit trail you can hand straight to a reviewer.

Launch the app → See the modules

StructuralClaw isn't a black box. Ask it for a beam and you get the demand, the capacity, the ratio — and the ACI/AISC/NDS/ASCE 7 clause behind each number. Two example modules are free to try; the full set lives in the app.

Why engineers use it

Code-cited every value

ACI 318-19, AISC 360-22, NDS 2018, ASCE 7-22, IBC 2021 — section + equation on each result, never "per code".

LRFD & ASD

Both design methods, side by side, with the governing load combination shown.

Reviewer-ready audit trail

Every input, factor and step is recorded — hand the package to a checker without re-deriving.

31 modules

From anchor bolts to two-way slabs to seismic ELF. One consistent workflow across materials.

The design modules

31 calculation modules, grouped by material. Each cites its governing code.

Concrete — ACI 318-19

Reinforced concrete column cage

Columns & beams

  • Concrete column (P-M interaction)
  • Concrete beam (flexure + shear)
  • One-way & two-way slabs
Spread footing reinforcement

Foundations

  • Spread & wall footings
  • Pier / drilled shaft
  • Retaining wall
Concrete column formwork

Anchorage

  • Post-installed anchors (Ch. 17)
  • Anchor bolts & base plates

Steel — AISC 360-22

HSS steel tube

Members

  • Steel column (compression)
  • Beam (LTB), HSS tube
  • Steel joist, truss
Bolted steel plate connection

Connections

  • Bolted connection
  • Shear tab
  • Base plate + anchor bolts
Shear tab connection

Base & anchorage

  • Base plate design
  • Anchor bolt template

Wood — NDS 2018 & SDPWS

Glulam beam

Members

  • Wood column, header, stud wall
  • Cantilever beam
CLT floor system

Lateral

  • Wood shear wall (SDPWS)
  • Wood diaphragm
  • Holdown

Masonry, Seismic & Loads

CMU masonry wall

Masonry

  • Masonry wall
  • Masonry lintel
Masonry lintel

Seismic — ASCE 7-22

  • Seismic ELF base shear
  • Seismic diaphragm
Retaining wall reinforcement

Loads

  • Snow (Ch. 7)
  • Wind C&C (Ch. 30)
  • Ice load

Try two modules free

Worked examples — the same output the app produces, code citation and all.

① Steel beam — lateral-torsional buckling (AISC 360-22 §F2)

W18×50Lb = 12 ftCb = 1.14Fy = 50 ksi
Lp = 5.83 ft · Lr = 16.9 ft → inelastic LTB region (§F2.2)
φMn = 0.90 × 339 kip·ft = 305 kip·ft   vs Mu = 268 kip·ft → ratio 0.88 ✓

② Wood shear wall — unit shear capacity (SDPWS 2021 §4.3)

15/32" OSB8d @ 4" edgeblockedL = 8 ft
vn = 640 plf × CD × ... → Table 4.3A · aspect ratio 1.0 ✓ (§4.3.4)
φv'n = 512 plf   vs demand 380 plf → ratio 0.74 ✓

The workflow

1
Pick a module & enter inputs. Geometry, material, loads — in engineering units.
2
StructuralClaw runs the code path. Governing load combo, factors, capacity — LRFD and ASD.
3
Every value cites its clause. ACI/AISC/NDS/ASCE 7 section + equation on each number.
4
Export the audit trail. A reviewer-ready package — inputs, steps, citations, verdict.

Launch StructuralClaw →