Framing Scope of Work: Stud Gauge, Deflection Limits, and Head-of-Wall Detailing
Writing a framing scope of work — steel stud gauge and spacing, deflection limits, slip track and fire-rated head-of-wall, blocking responsibility, and seismic bracing.
A well-defined framing scope of work is the structural backbone of any commercial construction contract. Whether you're scoping wood platform framing, light-gauge metal stud systems, or a hybrid engineered-lumber frame, vague scope language creates costly RFIs, re-work, and disputes at buyout. This guide covers the sub-trade requirements, package deliverables, and coordination items every PM or estimator needs in their framing scope of work — along with the gaps most often missed at pre-construction.
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Stud Schedules, Deflection Criteria, and Head-of-Wall
The line items that govern a framing buy-out — stud gauge and spacing, deflection limits, slip track and fire-rated head-of-wall, sheathing, and blocking — all of which must be explicit before the package goes out for pricing.
Framing scopes span a wide range of structural systems. Make sure yours identifies exactly which system and components are in scope before the sub submits a number.
Structural vs. Non-Structural Framing
Structural framing: Load-bearing walls, columns, beams, floor and roof systems. All work must conform to the structural engineer's stamped drawings. Specify lumber species and grade (e.g., SPF No. 2 or Better, Douglas Fir-Larch #1) and size schedule (2×6, 2×8, 2×10, 2×12).
Non-structural framing: Interior partitions, soffits, furring, ceiling grid framing. Specify stud gauge (20-ga. or 25-ga. light-gauge steel) and spacing (16" o.c. or 24" o.c.).
Engineered lumber: LVL beams, PSL columns, wood I-joists (TJI series), and glulam members must be called out by size, span, and manufacturer series. Do not leave this to the sub's discretion.
Deflection Criteria and Slip-Track
Allowable deflection: Specify deflection limits by wall type. L/240 is acceptable for typical partition walls with flexible finishes. L/360 is the minimum for walls receiving gypsum board. L/600 or L/720 is required for walls supporting brittle finishes (stone tile, glass) or curtain wall mullions. The deflection limit drives stud gauge and spacing — do not specify both independently.
Slip-track / head-of-wall: All non-load-bearing partitions extending to underside of structure require a slip track or deflection track to allow movement of the structure above without transferring load to the partition. Specify the deflection track product (e.g., SLP-TRK) and the design deflection (typically 1" minimum for steel-framed buildings).
Fire-rated head-of-wall: Where the partition is fire-rated and runs to underside of structure, the head-of-wall joint requires a UL-listed top-of-wall joint system (e.g., HW-D-0001 series). The framing sub installs the assembly; firestop sealant is typically a fire-stopping sub scope. Define which trade installs which component.
Fastener Schedules and Connectors
Specify nailing schedules per the applicable IBC/AWC nailing table. Reference the structural drawings for all connector hardware (joist hangers, hurricane ties, hold-downs, post bases).
Specify Simpson Strong-Tie (or approved equal) by model number where the structural engineer requires specific connector capacities.
Require framing sub to provide a fastener schedule submittal prior to beginning work.
Sheathing and Fire Blocking
Structural sheathing: OSB or plywood — specify thickness, span rating (APA Rated Sheathing), and nailing pattern (typically 6" edge / 12" field for walls; 6" edge / 6" field for diaphragm zones).
Fire blocking and draft stopping must comply with IBC Section 718. At a minimum, require blocking at each floor level, at the top of stud walls, and in concealed horizontal spaces. Call out treated lumber where blocking contacts concrete.
Sill plates: pressure-treated lumber (PT) or a capillary break isolator at all slab and grade contact points. Anchor bolt pattern per structural drawings.
Headers, Beams, and Point Load Transfer
Every opening in a load-bearing wall requires a properly sized header with king studs and jack studs per the structural schedule. Confirm the header schedule is included in your drawings — not just the rough opening size.
Point loads from beams above must transfer continuously to the foundation. Verify bearing details at each level and identify where posts or columns are required.
Tip for PMs: The most common framing scope gap is failing to define who installs blocking for future fixtures — toilet backing, grab bars, TV mounts, overhead door tracks, cabinet support. Define this in the framing scope or you will buy it as an add-on later.
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Common Framing Scope Gaps at Buy-Out
Items routinely left out of framing sub bids — blocking schedules, seismic bracing, slip-track installation, and connection hardware — that turn into rework when finish trades show up.
The framing package should be fully defined before the RFP goes out. Incomplete packages lead to qualification-heavy bids that are difficult to compare.
Required Submittals
Framing plan and elevation drawings stamped by the structural engineer of record (SER)
Treated lumber certificates (AWPA UC2, UC3A, UC3B, or UC4A as applicable)
Moisture content certification for dimension lumber (≤19% per ASTM D245 at time of installation)
Temporary Works and Bracing
The framing sub is responsible for all temporary bracing and shoring required to maintain structural stability during construction. Include this explicitly in your scope — do not assume it is standard practice.
Require a temporary bracing plan for any wall exceeding 14' in height, or per local authority requirements.
In seismic zones, specify seismic clip and bracing requirements at all non-structural partitions per ASCE 7-22 Chapter 13. Suspended ceiling perimeter clips and lateral bracing for partitions above 9 ft are routinely missed at buy-out.
Best Practices from Leading GCs
Issue framing and MEP rough-in drawings simultaneously to all subs and run a pre-coordination meeting before framing begins. Framing errors that require structural modifications are among the most expensive RFI resolutions in a project.
Define the framing sub's responsibility for waste disposal and housekeeping — cut-off material and sheathing scraps create safety hazards and extra site cleanup costs.
For multi-storey projects, include a floor-by-floor completion schedule with milestone inspections so that MEP rough-in can follow framing without gaps.
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Framing Coordination with MEP, Drywall, and Structural
Interface items between the framing sub and the MEP, drywall, and structural trades — get these defined before framing starts or pay for it at rough-in and finish.
Framing is the grid every other trade works around. Coordination failures here multiply throughout the project.
MEP Rough-In Penetrations
Electrical, plumbing, mechanical, and HVAC subs must issue rough-in drawings showing all penetrations through framing members prior to framing completion. The framing sub installs sleeves, cripple studs, or double framing around large openings per the drawings.
For plumbing drop walls (chase walls), define the minimum cavity dimension required and coordinate stud orientation (flat vs. edge) with the plumbing sub.
HVAC supply and return chases must be framed to the mechanical contractor's duct schedule. Do not allow framing to proceed before duct sizes are confirmed.
Stair and Shaft Openings
All floor openings for stairs, mechanical shafts, elevator hoistways, and roof penetrations must be double-framed with headers and trimmers per structural drawings. The framing scope must explicitly include all trimmer and header installation — this is frequently excluded by subs who assume it's a separate scope.
Pre-Installation Coordination Checklist
Structural drawings issued for construction (IFC) — confirmed
Slab pour complete and cured to ≥75% design strength before framing begins
Anchor bolt locations surveyed and confirmed
MEP rough-in drawings issued and reviewed for framing conflicts
Backing locations for toilet accessories, grab bars, millwork, and equipment confirmed with architect
Structural inspection points defined and scheduled with local building authority
Tip for Estimators: When reviewing a framing sub's bid, verify that the number includes all connection hardware. A bid that lists "framing lumber only" and excludes joist hangers, hold-downs, and hurricane ties will have significant cost additions at buyout.
Framing Scope of Work — FAQ
What stud gauge should I specify for interior partitions?
Stud gauge is driven by wall height and deflection limit, not partition type. For walls up to 10 ft with L/240 deflection, 25-gauge studs at 16" o.c. are acceptable. For walls up to 14 ft, or any wall with L/360 deflection, specify 20-gauge minimum. Above 14 ft or for walls supporting tile, glass, or curtain wall, specify 18- or 16-gauge per the stud manufacturer's allowable height tables (Marino, ClarkDietrich, or equivalent). Do not let the sub interpolate gauge from the height table — specify it.
What deflection limit should I specify for framing?
L/240 is the IBC code minimum for typical interior partitions. L/360 is the standard for walls receiving gypsum board to control cracking. L/600 is required for walls supporting brittle finishes — stone tile, large-format porcelain, or glass. L/720 is required at curtain wall back-up and other high-tolerance facade conditions. The deflection limit must be stated on the partition schedule — without it, the sub will price to L/240 and produce wall cracks at every door head.
Whose scope is the slip-track and fire-rated head-of-wall joint?
The framing sub installs the slip-track or deflection track. Where the partition is fire-rated, the head-of-wall joint requires a UL-listed top-of-wall system — the framing sub installs the track and stud component, the firestop or drywall sub installs the listed firestop sealant or mineral wool. Reference the specific UL HW-D series number on the partition type schedule, and define each trade's portion of the assembly in their scope.
Is blocking for grab bars, TV mounts, and casework in the framing scope?
Yes — but only if you specify it. Blocking is the single most-missed framing scope item. Provide a blocking schedule by room: toilet accessories (paper, soap, grab bars per ICC A117.1), TV/display mounts, casework support, equipment hold-down, and millwork upper-cabinet support. Without a schedule, the framing sub installs blocking only where the structural drawings show it — and you buy in-wall blocking as a change order after drywall is up.
Where are seismic clips and bracing required?
Per ASCE 7-22 Chapter 13, non-structural partitions taller than 9 ft (or with a weight above the prescribed threshold) require lateral bracing to the structure above in Seismic Design Categories C and higher. Suspended ceilings require perimeter clips and lateral bracing at the same threshold. Specify seismic bracing requirements by partition type and by SDC — this is routinely excluded from framing bids in mixed-use and west-coast projects.
What's the most common framing scope gap on buy-out?
Three items, in order: in-wall blocking (toilet accessories, mounted equipment, casework support); slip-track at non-load-bearing partitions running to deck; and connection hardware on wood-framed projects (hangers, hold-downs, hurricane ties). All three are routinely 'assumed' by the GC and 'excluded' by the sub — close the gap by listing each item on the bid form.
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