Bolt \/ Anchor Calculator

Bolt / Anchor Calculator

Find bolt spacing and quick strength check. Choose unit system.

Units

Bolt diameter

Metric: mm · US: in

Plate length

Metric: mm · US: in

Plate width

Metric: mm · US: in

Rows (length direction)

Columns (width direction)

Min spacing factor (×d)

Pitch ≥ factor × diameter

Min edge factor (×d)

Edge ≥ factor × diameter

Number of anchors

Rated tension (per anchor)

Metric: kN · US: kip

Rated shear (per anchor)

Metric: kN · US: kip

Spacing factor (0–1)

Reduction for close spacing / edges

Other factor (0–1)

Cracked concrete, edge, etc. (optional)

Safety factor (≥1)

Tension demand (group)

Metric: kN · US: kip

Shear demand (group)

Metric: kN · US: kip