A wider span does not add cost in a straight line. Here is what changes inside the frame and outside it, and how to price two span options on the same basis.

Third-party inspection is the last cheap moment to influence quality on a prefab steel warehouse order. Here is the hold-point plan, the documents behind it, and the contract clauses that make it stick.

Span is decided by five checks, not by a catalogue number. Here is what governs an RHS portal frame at long span and how hollow sections compare with open sections.

A steel building quote is not one number. Here is how the bill of materials behind it is organised, what to check in each group, and how to reconcile the member list with the price.

Six drivers decide what hot rolled steel framing costs between enquiry and delivery, plus a seven-row method for comparing two framing quotes on equal scope.

A prefabricated steel warehouse quote is not one number. Here are the six billing units behind it, what moves each line, and how to normalise two quotes before you decide.

Span, bay spacing, height, coating and freight each move a portal frame price independently. Here is how to check a quoted tonnage and compare quotes on the same scope.