Threshold Inspections, a Stop-Work Order, and Silica at the Property Line
You are the general contractor building a four-story, 68-foot, 96,000-square-foot assisted living facility in Jacksonville. The owner hired a private provider for plan review and inspections. The building is a threshold building with post-tensioned elevated slabs. On Thursday your superintendent cast and finished the third-floor slab edge and covered a set of embedded electrical sleeves before the special inspector arrived; on that same band the special inspector had not witnessed the post-tensioning stress operations. On Friday the building official issued a stop-work order citing the missing threshold inspections. The same week, a masonry crew was cutting CMU with a dry, gas-powered cut-off saw at the exterior, with dust blowing toward the occupied assisted living building next door, and a crane was scheduled to fly a rooftop unit over the public sidewalk with no barricade, no pedestrian protection, and no right-of-way permit.
1. What does threshold-building status require, and who was supposed to be inspecting what?
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A threshold building under Florida law is one greater than three stories or 50 feet in height (F.S. 553.71) - at four stories and 68 feet this qualifies. Threshold buildings require threshold inspections of the structural frame by a threshold inspector who is a Florida-licensed professional engineer or architect, independent of the contractor, and who performs the special structural inspections required by the code. That is a separate role from the private provider, who performs plan review and building inspections on the owner's behalf. Having a private provider does not satisfy the threshold inspection obligation, and neither does a general contractor's own quality control.
The scope covers the structural items in the code's special inspection chapter - post-tensioning operations including tendon installation, stressing, and grouting; structural welding; high-strength bolting; masonry; precast connections; and the like. The contractor's duties are to notify the building official and the threshold inspector in writing as the structure reaches each threshold level and before covering work, and to leave the work accessible until it is inspected and approved.
So the missed items here are the PT stressing on that band and the slab-edge reinforcing and embed placement before the pour. Neither can be recreated after the fact by paperwork; the engineer of record will have to evaluate the as-built condition, and the building official - not the private provider and not you - decides what is acceptable.
2. The stop-work order is posted and the work is concealed. What is the recovery plan, and who pays?
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Recovery starts with stopping, not with arguing. Issue a written stop-work directive to the affected trades, secure the area, and assemble the facts: what was covered, when, by whom, what inspection requests were made, and what the special inspector's log shows.
Then expose the work. Depending on the condition, that means removing the slab edge, or using ground-penetrating radar and radiography to locate PT tendons, conduits, and reinforcing before any coring or demolition. Pull the PT supplier's stressing records - elongation and gauge pressure logs exist even without a witness - and have the engineer of record review them along with any verified re-stressing or lift-off testing. The engineer then issues a sealed letter or repair detail, you submit a written corrective action plan to the building official, and you pay for the re-inspection and any testing. Do not allow any trade to resume in that area until the stop-work is formally released in writing.
Cost allocation: this is the contractor's, not the owner's. It is a quality-control and means-and-methods failure, not a differing site condition or a design defect, so there is no change order to pursue. Notify your carrier, document the corrective work, and discipline the sequence - the lesson is that inspection requests are scheduled and confirmed before the pour, not after.
Expect schedule impact. Add the exposure, testing, engineer review, and re-inspection durations to the schedule and tell the owner early; a surprise at turnover is worse than a candid two-week slip.
3. Address the dry-cutting and the crane pick over the public sidewalk.
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Two different exposure streams, both serious.
Silica: under OSHA 1926.1153, cutting CMU with a handheld power saw requires engineering controls - integrated water delivery on the saw or a HEPA dust-collection system on the tool - plus attention to housekeeping and, depending on the task duration and the chosen compliance method, respiratory protection and exposure monitoring. Dry-cutting with a gas saw and no controls is not an acceptable Table 1 method. The practical fix is wet cutting with a water-fed saw, which also controls the visible plume. Add a perimeter screen or barrier, and notify the occupied building next door - airborne silica leaving your property onto an occupied assisted living facility invites both a regulatory complaint and a private nuisance claim. If the crew must cut dry, you need objective data or air monitoring, a written exposure control plan, trained workers, and respirators.
Crane: flying a load over a public sidewalk means people beneath the load. OSHA 1926 Subpart CC requires a qualified rigger and certified operator, a lift plan for a critical or non-routine lift, and a controlled exclusion zone so no one is under the load. It does not authorize closing public property. You need a right-of-way use permit from the City of Jacksonville (and FDOT if a state route is involved), an approved maintenance-of-traffic plan with a pedestrian detour, and, where pedestrians must pass beneath, a protective covered walkway designed for the imposed loads. Coordinate with the facility next door so they can route residents away from the fence line during the pick.
Do not lift until the permit is in hand and the exclusion zone is barricaded and staffed.