Three days before a pour, someone notices the anchor bolts for a rooftop unit were never assigned to a trade. Not missed — never assigned. The structural drawings show them; the spec doesn't say who sets them; the reinforcing sub, the steel sub and the concrete sub each assumed one of the other two had it. The pour gets pushed, or the bolts get set wrong and re-drilled after strip. This is the single most common failure in a reinforcing bid, and it has nothing to do with tonnage.
Gap one: embeds nobody owns
Anchor bolts, connection plates, sleeves and mechanical anchors that must be cast in before the pour, with no trade's scope claiming them, are the most common gap in this trade's bids, full stop. Embed plates and anchor bolts are usually a steel or miscellaneous-metals supply item, not reinforcing's — but on a striking number of tenders, the documents simply don't say whose they are. Extract every embed requirement in the documents and who, specifically, is assigned to it, and flag every one that isn't.
Gap two: "by others" isn't one phrase
"Furnished by others," "installed by others," "by others" — every occurrence changes what you're pricing, and the three phrasings aren't interchangeable. Extract the exact wording each time it appears rather than treating "by others" as a single category. Some tenders also split furnish from install cleanly, one party supplying fabricated bar and another placing it, and the classic mistake is pricing full tonnage against a scope that's placement-only, or the reverse. This isn't rare enough to skip checking: verify the split on every tender rather than assuming the standard supply-and-install model by default.
Gap three: dowelling into existing concrete
Drill-and-epoxy dowels into existing structure show up constantly on renovation and addition work, and there's no consistent convention for whose scope they land in. Sometimes the documents assign them to reinforcing; just as often they're carried by the concrete trade or the demolition trade instead. This is genuinely conditional — extract the specific assignment language from this tender rather than assuming it from the last renovation job, because all three plausible owners have a real basis for being it.
Gap four: post-tensioning coordination
Post-tensioning supply and stressing is its own specialty trade, usually contracted separately from mild-steel reinforcing. What stays yours even when PT is excluded is the coordination inside PT zones: mild-steel placement has to work around banded tendons and column-strip congestion, and that cost exists whether or not you're pricing the tendons. Confirm explicitly that the tendons are excluded rather than assuming it from a PT sub appearing elsewhere in the documents.
Gap five: coating, inspection and approval time
Three more clauses worth a deliberate check, because none of them repeat where you'd expect. Coating triggers — epoxy or galvanized requirements tied to exposure like parking decks, marine conditions or de-icing salts — are often stated once in a durability paragraph and never repeated per element, so a single sentence decides the coating spec for bar you'll take off page by page. Special inspection responsibility — who retains the inspector under IBC 1705.3-style requirements, and what pre-pour sign-off is needed — is a real schedule and cost item whenever it lands here instead of on the general contractor. And placing-drawing approval lead time, tied to the pour schedule rather than notice-to-proceed, is the leading cause of pour delays this trade ends up owning; build the approval cycle into your schedule assumption, not just fabrication lead time.
What's genuinely easy
None of this takes away from the part of the bid that is straightforward:
- Supply, fabrication and placement of reinforcing steel — rebar and welded wire mesh per the placing drawings: bar sizes, grades, spacing, hooks, bends and concrete cover. Chairs, bolsters and supports are part of placement itself, not a separate accessory line.
- Lap splices, couplers and development — lap lengths and Class A/B/C splice designations, mechanical couplers where specified, and development or embedment lengths. These price directly, since splice class and coupler requirements change both material quantity and labour.
- Placing (shop) drawings and submittals — bar lists, bending schedules, mill certifications and coating certifications. The lead time these need against the pour schedule is a real cost, not paperwork.
- Coated and specialty reinforcing — epoxy-coated, galvanized or stainless bars where specified, including the handling and repair requirements attached to them.
And what stays out: concrete supply, placement and finishing (though tight bar spacing that restricts tremie or vibrator access is worth flagging, since it's a direct consequence of how this trade detailed the steel); formwork and shoring, priced on entirely separate logic; and structural steel and miscellaneous metals, which is where gap one starts.
Where reinforcing meets everyone else
| Trade | What to reconcile before you price |
|---|---|
| Formwork trade | Pour windows — rebar places after forms and before concrete, with inspection in between. Sequence restrictions are this trade's schedule to carry. |
| Concrete placer | Pre-pour inspection sign-off, congestion at pump or tremie points, and who repairs bar displaced during the pour. |
| Mechanical & electrical trades | Sleeves, conduits and drain bodies occupying the same zones as reinforcing — late embed drawings force re-fabrication at real cost. |
| Post-tensioning trade | Shared zones — column strips, banded tendons — need an agreed placement sequence between mild steel and tendons before either crew shows up. |
| Steel trade | Anchor bolts and embed plates: who supplies, who sets, who provides templates — the boundary the documents most often leave unassigned. |
Every anchor bolt, sleeve and connection plate on the documents needs a named owner before the pour, not an assumption. Read the placing drawings for tonnage first, then read the structural general notes a second time specifically for embed requirements and "by others" language — that second pass is where the risk lives.