Book Construction Quantity Surveying A Practical Guide For

Quantity surveying is mostly about getting the numbers right before someone else charges you for being wrong

I picked up Book Construction Quantity Surveying A Practical Guide For about seven years ago when I was still junior and making up the same errors over and over. The thing nobody tells you about quantity surveying books is that they teach you the clean version of the job. The clean version has perfect drawings, consistent units, and contractors who actually read the specification. That version exists in these guides. It does not exist on site. The core of the work is measurement and cost planning. You take architectural and structural drawings, you measure every element, you rate them against current market prices, and you produce a bill of quantities or cost estimate that a contractor will price against. The rules for measuring come from standards like NRM 1, 2, and 3. NRM 1 covers order of cost estimates and cost planning. NRM 2 covers detailed measurement for bills of quantities. NRM 3 covers life cycle costing. Most practitioners use NRM 2 as their day-to-day reference. That is the one you will be marked against on a tender. I remember a specific project where the client gave us a structural steel drawing set that used imperial dimensions for the foundation details but millimetres for the steelwork schedule. The quantities came out wrong by about fourteen percent on the concrete works because the reinforcement spacing was calculated from the wrong dimension set. I caught it by cross-referencing the grid lines against the foundation plan before I submitted the BOQ. The workaround was straightforward: I flagged the inconsistency to the structural engineer, got a revised drawing issued, and remeasured the affected elements. The original set saved maybe two hours of work at the cost of roughly twelve thousand pounds in potential overpayment. That is the kind of thing these guides do not show you because it never happens on a well-run project. But it happens often enough that you learn to measure twice and check the drawing revision sheet first.

The practical skill here is not measurement itself. Any graduate can dimension a wall. The skill is knowing which elements to measure, which to ignore, and how to describe them so the pricing team does not ask you seventeen clarifications. Description matters more than most people realise. A proper NRM 2 description includes the item name, material, dimensions, location, and any exclusions. If you write "blockwork wall" without specifying the strength class or whether it includes cavity ties, a contractor will either assume the cheapest option or add a provisional sum. Provisional sums are where budgets go to die. I have seen a single poorly described waterproofing line item add nearly eighty thousand pounds to a tender through contractor risk allowances alone. Here is a counter-intuitive point that beginners miss: remeasurement contracts often reward poor initial estimating. If your initial BOQ quantities are too low, the contractor prices them low to win the job and then makes their profit back on variations when the measured quantities exceed the original Bill. This is why experienced surveyors do not deliberately undermeasure. We measure accurately and flag discrepancies in our pricing notes. The contract value stays honest and the client is protected when variations arise later. Cost planning is another area where practice diverges sharply from the textbook. The guide will show you elemental cost planning with neat tables breaking down structure, fabric, services, and external works into percentage bands. In reality, your first cost plan will almost always need three or four revisions before the architect stops changing the design. Each revision requires remeasuring or adjusting elemental rates. I usually keep a master cost plan spreadsheet with version control and a separate tracking sheet that records what changed between each iteration. This takes extra time upfront but it saves hours when the client asks six months later why the budget moved from one version to the next.

When it comes to procurement, the book advice is reasonably sound. You need to match the procurement route to the project characteristics. Design and build suits projects where the client wants single-point responsibility and a fixed price early. Traditional contract suits projects where design completeness is uncertain and the client wants full control over specifications. Management contracting and construction management make sense only when the client has an in-house team capable of managing multiple trade packages. The mistake I see most often is clients choosing design and build because it sounds faster, not because their scope is stable enough to support it. An unstable scope in a design and build contract means the contractor will inflate their risk allowances significantly. The initial price looks competitive. The final account does not. Valuation and interim payments are where the theory gets most distant from the site reality. The guide will explain how to value work in place using the measurement rules. What it does not emphasise enough is that valuations are negotiation documents, not mathematical exercises. A contractor will always overclaim. A quantity surveyor's job is to identify the overclaim without being confrontational. I usually prepare my valuation with clear notes showing exactly how each item was measured and which drawings or site records support it. When a contractor disputes a deduction, I can point to the specific section of the BOQ and the measurement rule. This removes emotion from the conversation. It also means I spend less time on the phone explaining myself. There is a real limitation to relying on any single guide for this work. The construction industry changes fast. Material prices shift quarterly. New regulations around thermal bridging, fire safety, and sustainability update constantly. A book published two years ago may already contain outdated compliance requirements. I treat these guides as foundational references, not current authority. I cross-check everything against the latest RICS guidance, current specification databases like NBS, and recent market pricing from sources like BCIS or regional cost databases. The book teaches you the method. The method does not change. But the numbers behind it do.

Another area where practical experience diverges from the text is dealing with site conditions that were not visible at the time of tender. Ground contamination, unexpected service crossings, poor access for deliveries, neighbouring building constraints. These are the items that make or break a project's financial outcome. I keep a running log of unforeseen site conditions across every project I work on. Over a year, this log becomes a reliable predictor for future risk allowances. The guide will mention contingencies in a paragraph. The reality is that a well-maintained contingency register backed by actual project data is worth more than any generic percentage recommendation. For anyone starting out, the most useful thing these guides offer is the framework for thinking about the job systematically. Quantity surveying is not about crunching numbers. It is about understanding the construction process well enough to predict what each decision will cost. If you can read a drawing set and visualise the sequence of construction, the measurement and pricing follow naturally. If you cannot visualise it, you will be measuring blind and pricing by guesswork. I suggest spending time on site whenever possible. Even a few days watching a foundation pour or a steel erection sequence will teach you more about quantity surveying than a week of reading about it. The downside of this profession is that the margin for error is small and the consequences are expensive. A misplaced decimal in a reinforcement quantity can mean hundreds of thousands in excess concrete. A missed item in a BOQ description can mean a variation claim that exceeds the original contract sum. The pressure is real. The guides do not sugarcoat this. They present the tools. Whether you use them well depends on how carefully you apply them and how honest you are with yourself about what you do not know yet.