Quality Control & Inspections

Welcome

Hello, and welcome. This is Super Structures General Contractors — a national general contractor headquartered in Powhatan, Virginia — here to help you and your clients build something that lasts. We're glad you're with us, and we look forward to connecting with you.

Alright, Quality Control & Inspections. Don't let the plain title fool you. Here's the part that actually matters on the job: Build to the specs, verify before you cover it up, and pass inspections — quality the first time beats expensive rework. Learn it well and rework stops quietly draining your margin and your schedule.

Doing it right the first time is far cheaper than doing it twice. Rework costs the tear-out, the rebuild, the schedule that slipped while it happened, and the trust of the owner and inspector who watched. Quality control is the set of habits that prevents it. This lesson covers how to build quality in, how the inspection process works, and how to document it.

The standard is the documents

Quality is measured against the plans, the specifications, the approved submittals, and the applicable code — not against what a crew usually does. The field needs the current drawings (with every addendum, RFI response, and change incorporated) and the approved submittals, not the ones that came back "revise and resubmit." Many defects are simply work built to an outdated sheet or an unapproved product.

Building quality in

• Pre-installation meetings. Before a major scope starts — roofing, waterproofing, curtain wall, concrete, fireproofing — sit down with the sub, the super, and the manufacturer or inspector, and walk through the spec, the details, the sequence, substrate conditions, and inspection points. Most installation failures trace back to a question that could have been asked here.
• Mockups. Build a sample of the assembly, get it approved, and keep it as the standard for the rest of the job. Mockups settle arguments about what "acceptable" looks like before there are 300 of them.
• First-work inspection. Inspect the first room, the first run, the first elevation carefully. If it is right, the next hundred usually are; if it is wrong, you caught it once instead of a hundred times.
• Checklists for recurring work — each room's rough-in, each window installation, each slab pour — so verification does not depend on memory.
• Verify before you cover. Anything that will be hidden — rebar, embeds, in-wall blocking, rough plumbing, insulation, waterproofing, firestopping — is inspected and photographed before it is covered. A mistake found at framing is cheap; found after drywall, expensive; found after the owner moves in, a warranty claim.

Inspections and who performs them

• Building department (AHJ) inspections at milestones — footings, foundation, slab, framing, rough mechanical, electrical and plumbing, insulation, fire-resistive assemblies, and final. Work cannot proceed past a milestone until it passes, and the inspector will want the approved permit set and any deferred submittals on site. Schedule inspections in the look-ahead so a missed inspection does not stop the next trade.
• Special inspections — required by the building code (IBC Chapter 17 in most jurisdictions; editions and adoption vary) for structural steel and welding, concrete and reinforcing, masonry, soils, deep foundations, spray fireproofing, and more. They are performed by an independent agency, usually hired by the owner, and reported to the building official, and the final report is often a condition of the certificate of occupancy.
• Owner and architect observations — site visits to confirm the work conforms to the design intent; their field reports become part of the record.
• Manufacturer inspections — many roofing, waterproofing, and flooring warranties require the manufacturer's representative to inspect the installation. No inspection, no warranty.
• Your own inspections — the super's daily walk, the checklist, and a QC walk before you call for any outside inspection. Calling an inspector to look at work you have not checked is how you fail inspections.

When something is wrong

Document it. A non-conformance report (NCR) or deficiency log entry records what is wrong, where, who is responsible, and how it will be corrected — repair, replace, or accept with the designer's written approval. Then verify the correction and close it in writing.

Going Deeper (Intermediate)

Quality assurance (QA) is the system that prevents defects: qualified subs, pre-installation meetings, approved submittals, mockups, trained crews. Quality control (QC) is inspecting the product to catch what the system missed. Both matter, but QA is cheaper, because it moves the catch earlier.

Many contractors formalize QC in an inspection and test plan (ITP) for each major scope: what gets inspected, at what stage, by whom, against what standard, and what record is kept. Two kinds of checkpoints appear in an ITP. A hold point means work stops until the inspection is done and signed — rebar before a pour, waterproofing before backfill. A witness point means the inspector is notified and may attend, but work can proceed if they do not. Knowing which is which keeps the crew from either pouring over uninspected steel or waiting on someone who was never coming.

Keep a testing log — cylinder breaks, compaction, weld inspections, pressure tests — and read results as they arrive.

Advanced / Pro-Level

The quality system pros run:

• Standards by name. Specs call out ACI for concrete, AISC and AWS D1.1 for steel and welding, ASTM for materials and test methods, and manufacturer instructions that carry the force of the spec. Know which standard governs acceptance before the argument starts; editions vary by jurisdiction and contract.
• Tolerances. Most disputes about "quality" are really about tolerance — floor flatness, plumb, joint widths. The spec and the referenced standard set it; measure against that, not opinion.
• Commissioning verifies that mechanical, electrical, plumbing, and life-safety systems actually perform as designed, not just that they were installed — a plan, functional tests, and a report, increasingly a condition of the owner's final acceptance.
• Quality records are also warranty defense. Inspection reports, test results, photos before cover-up, and closed NCRs are what you produce when an owner calls two years later about a leak. Organize them during the job by area and spec section.
• Track rework as a cost so you can see which trades and details generate it and fix the cause next time.

Practice Challenge

A hotel's bathroom waterproofing membrane was installed by a new crew. The tile sub is ready to start on floor two tomorrow, floor one is already tiled, and the super has not inspected any of it. What should happen before tile goes down on floor two, and why? (Answer: stop and run a first-work inspection on floor two — flood test or inspect the membrane per the manufacturer's instructions, check terminations and seams, and photograph it before cover-up; if it fails, floor one must be investigated before more tile hides the same defect, and the cost of a day's pause is nothing compared to tearing out tile across every floor; this is exactly what a hold point on a waterproofing ITP would have prevented.)

In Practice

One PM holds a pre-installation meeting for every major scope, builds a mockup, inspects the first room with a checklist, and photographs every wall before drywall; inspections pass the first time and the owner's punch list is short. Another PM lets the subs "handle quality," calls for inspections without checking the work, and discovers at the final walk that a detail was built wrong in every unit. The first spends a few hours a week on quality; the second spends weeks on rework.

Common Mistakes to Avoid

• Covering up work before verifying and photographing it
• Building to superseded drawings or unapproved submittals
• Skipping the first-work inspection and finding the defect after it has been repeated everywhere
• Calling for an inspection without checking the work yourself first, and failing it on preparation
• Fixing defects without documenting the fix, so there is no record at closeout or under warranty

Takeaway: Build to the specs, verify before you cover it up, and pass inspections — quality the first time beats expensive rework.

Educational content — not legal, accounting, safety, or contractual advice. Follow your contract's specific procedures and deadlines, your company's policies, and the codes and requirements that apply in your jurisdiction.