Why structural steel needs fireproofing and what an hourly rating means
Explain the purpose of structural steel fireproofing, check the project's rated scope and describe an hourly rating without promising real-fire survival.
Fireproofing, intumescent coatings and inspection records
Fireproofing must match the specified system and the conditions that system permits. These lessons help teams coordinate listed designs, substrate acceptance, installation conditions, inspection records and repairs without substituting general advice for an approved design.
Hourly ratings and listed designs: trace the fireproofing thickness
Match the fireproofing schedule to its listed design, member and rating, then send missing or conflicting thickness information for a written decision.
Compare sprayed, intumescent and board fireproofing for the specified scope
Compare structural steel fireproofing families by their approved scope, appearance, access and inspection needs before assessing a proposed substitution.
Read the fireproofing specification and listing into a referenced job sheet
Build a referenced fireproofing job sheet covering the actual scope, substrate, thickness, testing and repair duties, with conflicts kept open for review.
Fireproofing over primed or painted steel: confirm the approved substrate route
Identify the steel coating, compare it with the actual fireproofing requirements and obtain a recorded substrate decision before spraying over primer.
The fireproofing pre-installation meeting: record decisions and hold points
Prepare a fireproofing meeting that records substrate status, trade interfaces, tests, masking and patching, with unresolved decisions kept as hold points.
Sequence fireproofing with deck, attachments and services using the actual system
Build a floor sequence around the actual fireproofing requirements, attachment work, clear spray access, testing and controlled return of service trades.
Who patches fireproofing: define the repair and responsibility process
Agree how fireproofing damage is reported, repaired, reviewed and priced under the actual contracts before later trades enter the protected area.
Mixing and spraying cementitious fireproofing: use the selected product's method
Prepare a product-specific mixing and spraying work pack, record the actual setup and investigate poor application without inventing a universal recipe.
Thickness and density as applied: plan crew checks without replacing tests
Plan product-specific crew checks for sprayed fireproofing thickness and application consistency, while keeping formal density and acceptance tests distinct.
Overspray protection and masking: plan boundaries, interfaces and cleanup
Map surfaces to protect during fireproofing, coordinate masking with access and ventilation, and agree compatible cleanup before neighbouring work is affected.
Temperature, ventilation and moisture: check conditions before and after spray
Use the selected fireproofing instructions to plan and record air, substrate and drying conditions, with a clear response when the work area is not ready.
Related lessons in other categories
Other categories
- Project management
- Scheduling
- Cost control
- Labour and productivity
- Scope and changes
- Document control
- Difficult conversations
- Coordination
- Documentation
- Quality
- Procurement and logistics
- Risk and problem-solving
- Leadership and closeout
- Time management
- Career and growth
- BC safety regulation
- Waterproofing
- Thermal insulation
- Firestopping