The Structural Steelwork Estimating Calculator estimates the Material, Labour and Plant required to install structural steels.

The Structural Steelwork Estimating Calculator is linked to the Specification. Therefore, many of the items required for a structural opening are specified by the Specification.

The combination of information taken from the Specification and the dimensions you enter will calculate the following items automatically:

  • Formation of opening
  • Lintels
  • Padstones
  • Bricks to support steelwork
  • Slates
  • Noggings
  • Plastering
  • Decorating


  • Please check all pre-specified items listed in the Calculated Resources tab, and in particular the red highlighted "critical items" before accepting the output.
  • You must also scrutinise carefully the Sundry Resources tab which covers the more free form aspects of the structural opening.
  • For openings which do not require steelwork, use the Structural Openings Estimating Calculator.