Source: https://www.quantsurv.com/library/faqs Content format: Markdown version of the public page. Content reviewed: 2026-10-14 Interactive forms, calculators and booking actions require the linked web page. Any displayed calculation is the page's initial example, not a calculation for your circumstances. # FAQs Get a direct answer to one specific question. Search faqs ## FAQs 234 results ยท showing 12 [ ### What is a FIDIC contract? ]() [ ### What does a quantity surveyor do? ]() [ ### What should I check before signing a contract? ]() [ ### Is a pay-when-paid clause allowed in my contract? ]() [ ### What does a back-to-back contract mean for a subcontractor? ]() [ ### Can I change the terms of a JCT or NEC contract before I sign? ]() [ ### What is a collateral warranty, and should I sign one? ]() [ ### What is a performance bond, and should I agree to one? ]() [ ### What is a main contractor's discount, and should I agree to it? ]() [ ### Should I sign my contract as a deed? ]() [ ### What is a time bar in a contract? ]() [ ### Can you review our contract before we sign it this week? ]() Sources, updates and editorial approach Guidance focuses on England and Wales. Your contract, amendments, facts and jurisdiction can change the answer. Follow each resource's author, sources and revision date. Quantsurv provides claims consultancy. Comparisons explain criteria and trade-offs; they are not independent endorsements. AI assists with drafting and organising the library; publication under a named author does not mean independent expert verification.