Selection guide

How to Read a Steel Grating Load Table

A load table tells you how much a given grating panel carries over a given span. Reading it correctly means knowing which load it is quoting, which span, and what deflection limit was used.

Reading a steel grating load table

What a load table shows

A load table lists grating types against spans, and gives the load each can carry. It is a comparison tool: it lets you pick a panel size once you know your span and your load.

Terms you need

  • Span: the clear distance between supports, measured across the bearing bars.
  • Uniformly distributed load (UDL): load spread evenly over the panel.
  • Concentrated or point load: load applied at one spot, such as a wheel or a machine foot.
  • Deflection: how much the panel bends under load; usually limited as a fraction of the span.

How to read a row

  • Find the row for your bearing bar size and pitch.
  • Follow across to the column for your span.
  • Read the load value, and check which load type and deflection limit it refers to.
  • If your load is a wheel or machine foot, use the concentrated-load figure, not the UDL one.

Common reading mistakes

  • Comparing a UDL value against a real wheel load.
  • Using the overall panel length instead of the clear span between supports.
  • Ignoring the deflection limit, so a panel that is strong enough still feels springy.
  • Assuming the table covers an unsupported or part-supported panel.

Always confirm the basis

  • Confirm the span, support and load case with the supplier before ordering.
  • State the load type explicitly: pedestrian, forklift wheel, truck wheel or equipment foot.
  • Do not interpolate between table rows without checking.
  • See How to Calculate Load Capacity.

Reading a Load Table FAQ

Why do two tables give different numbers?

They may use different load types, spans or deflection limits; check the basis before comparing.

Which load applies to a forklift?

A concentrated wheel load, not a uniformly distributed load.

Is the table enough to order from?

Confirm the span, support and load case with the supplier as well.