“Common Mistakes Estimators Make in Aluminium & Glass Tenders and How to Avoid Them”

Common Mistakes Estimators Make in Aluminium & Glass Tenders and How to Avoid Them

Aluminium and glass works are major cost components in high-rise and commercial projects across the GCC. Yet, many estimators repeat the same mistakes that lead to cost overruns, rework, or even losing tenders. Let’s look at the most common ones—and how to avoid them.

1. Missing Small but Critical ItemsEstimators often overlook accessories like brackets, sealants, gaskets, or fasteners. These may look minor, but together they add up to big costs. Always use a detailed checklist to capture every item.

2. Wrong Profile and Glass SelectionUsing the wrong size of aluminium profile or glass thickness in estimates can distort both cost and performance. Always cross-check drawings and specifications before finalizing quantities.

3. Ignoring Wastage and Cutting LossesNot accounting for cutting wastage in aluminium sections or glass sheets leads to shortages during execution. Add realistic wastage factors based on local GCC practices.

4. Incorrect Labour Productivity RatesLabour productivity in Oman or UAE differs from other regions. Using the wrong benchmarks results in underpriced or overpriced tenders. Rely on updated GCC productivity norms.

5. Poor Documentation and BOQ PresentationA tender submission with unclear BOQs or missing remarks reduces credibility. Always present itemized costs in a clean, professional format.

How to Avoid These MistakesFollow a structured workflow: review drawings carefully, use verified quantity take-off formats, maintain supplier price databases, and apply GCC labour norms. Cross-verification before submission ensures accuracy.

For civil engineers and quantity surveyors who want to master these practices, the Bhadanis Estimator Training for Aluminium & Glass Works – Oman & GCC Market Online Course provides step-by-step methods, templates, and real GCC-based examples. It’s designed to help you estimate with confidence and win more tenders.