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Expert guidance on interior finish construction including framing, drywall, painting, flooring, tile, millwork, and finish carpentry for commercial projects.
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SOC 職業分類に基づく
Building envelope systems including curtain wall, roofing, waterproofing, cladding, and the four control layers for construction managers.
Guides PMs on contemporaneous recordkeeping, delay notices, and documentation practices that support potential construction claims.
Guides construction PMs through building commissioning, TAB, punch lists, O&M documentation, warranties, and project closeout.
Contract administration guidance for construction PMs—notice requirements, change orders, T&M documentation, claims, liens, and subcontract management.
Guidance for construction PMs on correctional facilities, jails, and detention centers including security systems, codes, and specialized building requirements.
Construction management for museums, cultural centers, galleries, archives, and institutional facilities requiring specialized environmental control and collection protection.
| name | interior-finishes-trades |
| description | Expert guidance on interior finish construction including framing, drywall, painting, flooring, tile, millwork, and finish carpentry for commercial projects. |
Comprehensive trade knowledge for managing interior finish work from rough framing through final punch list on commercial and institutional construction projects.
| Board Type | Thickness | Primary Application |
|---|---|---|
| Regular | 1/2" | Standard residential, light commercial |
| Regular | 5/8" | Standard commercial walls |
| Type X | 5/8" | 1-hour fire-rated assemblies |
| Type X | 2 layers 5/8" | 2-hour fire-rated assemblies |
| Type C | 5/8" | Enhanced fire performance |
| Moisture-Resistant | 1/2", 5/8" | Bathrooms (not in wet areas) |
| Mold-Resistant | 1/2", 5/8" | High humidity areas |
| Abuse-Resistant | 5/8" | Corridors, high-traffic areas |
| Impact-Resistant | 5/8" | Gymnasiums, detention |
| Shaft Liner | 1" | Elevator/stair shaft walls |
| Level | Description | Typical Applications |
|---|---|---|
| Level 0 | No finishing | Temporary construction, concealed |
| Level 1 | Tape embedded | Above ceilings, service areas |
| Level 2 | One coat on tape/fasteners | Tile substrate, concealed areas |
| Level 3 | Two coats, tool marks OK | Heavy texture, heavy wallcovering |
| Level 4 | Three coats, sanded smooth | Flat/eggshell paint, light texture |
| Level 5 | Skim coat entire surface | Gloss paint, critical lighting |
| Gauge | Mil Thickness | Decimal (in) | Common Applications |
|---|---|---|---|
| 25 ga | 18 mil | 0.0188" | Light non-load-bearing |
| 22 ga | 27 mil | 0.0283" | Standard non-load-bearing |
| 20 ga | 33 mil | 0.0346" | Heavy-duty non-load-bearing |
| 18 ga | 43 mil | 0.0451" | Light load-bearing |
| 16 ga | 54 mil | 0.0566" | Load-bearing |
| 14 ga | 68 mil | 0.0713" | Heavy load-bearing |
| Sheen | Gloss Units | Typical Applications |
|---|---|---|
| Flat/Matte | 0-10 | Ceilings, low-traffic walls |
| Eggshell | 10-25 | Office walls, residential |
| Satin | 25-35 | Corridors, moderate traffic |
| Semi-Gloss | 35-70 | Bathrooms, kitchens, trim |
| Gloss | 70+ | Doors, trim, accent areas |
| Flooring Type | Calcium Chloride (lbs/1000 sf/24hr) | RH Test (%) |
|---|---|---|
| Carpet - Permeable | 5.0-8.0 | 80-85% |
| VCT | 3.0-5.0 | 75-80% |
| LVT/LVP | 3.0-5.0 | 75-80% |
| Sheet Vinyl | 3.0-5.0 | 75-80% |
| Rubber | 3.0-5.0 | 75-80% |
| Hardwood (engineered) | 3.0 | 75% |
| Epoxy/Urethane | Varies by manufacturer | 75-80% |
| Tile Size | Trowel Notch | Coverage Required | Back-Butter? |
|---|---|---|---|
| Mosaic (<2") | 3/16" V-notch | 80% min | No |
| Up to 8" | 1/4" square | 80% min | No |
| 8"-12" | 1/4" x 3/8" | 80% min walls / 95% wet | Optional |
| 12"-16" | 1/2" x 1/2" | 80% min walls / 95% wet | Recommended |
| 16"+ / Large Format | 1/2" x 1/2" or 3/4" | 95% min all locations | Required |
| Grade | Description | Typical Applications |
|---|---|---|
| Economy | Basic quality, functional | Back-of-house, utility areas |
| Custom | Industry standard quality | Most commercial projects |
| Premium | Finest quality, meticulous | Executive areas, high-end |
| Separation Type | IBC Section | Typical Rating Required |
|---|---|---|
| Occupancy Separation | 508 | 1-2 hours (varies by occupancy) |
| Dwelling Unit Separation | 420.2 | 1 hour |
| Corridor Walls | 1020.1 | 1 hour (occupancy dependent) |
| Shaft Enclosures | 713 | 1-2 hours (height dependent) |
| Exit Stairways | 1023 | 1-2 hours (stories connected) |
| Exit Passageways | 1024 | 1-2 hours (stories connected) |
| Fire Barriers | 707 | Per Table 707.3.10 |
| Fire Partitions | 708 | 1 hour minimum |
Typical Commercial Interior Finish Sequence:
1. ROUGH FRAMING
└── Metal studs, blocking, backing installed
└── Inspection: Framing and blocking complete
2. MEP ROUGH-IN
└── Electrical, plumbing, HVAC in walls/ceilings
└── Inspection: MEP rough-in complete
3. INSULATION
└── Thermal, acoustic, fire safing
└── Inspection: Insulation complete
4. DRYWALL HANG
└── Board hung, fire-rated assemblies complete
└── Inspection: Fire-rated assemblies before tape
5. DRYWALL TAPE & FINISH
└── Taping, finishing to specified level
└── Inspection: Finish level acceptable
6. CEILING GRID (if ACT)
└── Main tees, cross tees installed
7. PAINTING - WALLS & CEILINGS
└── Prime and paint complete
8. MILLWORK & CASEWORK
└── Cabinets, trim, millwork installed
9. FLOORING
└── Hard surface flooring installed
└── Carpet last (protect until occupancy)
10. PUNCH & TOUCH-UP
└── All trades touch-up and corrections