🧱 Wall Framing Calculator (Steel Framing)

🧱 Drywall Calculator πŸ”² Suspended Ceiling 🏠 Truss / Roof

Free metal frame calculator for steel stud walls: estimate studs, tracks, screws and drywall sheets. Add doors and windows, view a 2D/3D plan. No sign-up.

Quick answer

How many self-drilling screws do I need per sq ft of steel framing?

For metal-to-metal connections in the structure, you need approximately <strong>4-5 self-drilling screws per 10 sq ft</strong> (stud-track connections). To attach drywall sheets to the structure, an additional <strong>25-30 screws per sheet</strong> (4x8ft) are required, installed every 6-8 inches on studs.

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πŸ“ Calculation Methodology for Steel Frame Wall Partitions

The Steel Framing construction system (also known as light gauge steel or cold-formed steel) uses galvanized steel profiles to create lightweight yet strong structures. This calculator implements international ASTM standards and building codes to ensure precise, professional calculations.

πŸ”© Studs (Vertical Members)

Studs are the vertical C-shaped profiles that form the wall structure. They are installed at 16" on center (standard spacing) or 24" for non-load-bearing walls. The calculator automatically determines the quantity based on wall width and allows you to select commercial lengths of 10ft, 20ft, or 40ft to optimize cuts and minimize waste.

πŸ“ Tracks (Horizontal Members)

Tracks are horizontal U-shaped profiles installed at the floor and ceiling. They serve as guides for anchoring the studs. They are calculated as twice the width of each wall (top track + bottom track).

⚠️ Corner Reinforcements

At each L-joint (corner), an additional reinforcement stud is added. This ensures structural rigidity and provides a fixing surface for sheathing panels on both sides of the corner.

πŸ”§ Fastening Screws

4 screws per stud are calculated (2 at top connection + 2 at bottom). Self-drilling pan-head screws 8mm x 1/2" are used for metal-to-metal connections.

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πŸ“Š Approximate Material Requirements per 100 sq ft

Reference values for a standard 8ft tall wall with studs spaced at 16" on center:

Material Quantity Unit Notes
Studs C 60x38x0.85mm 26-28 linear feet Approx. 11 studs
Tracks U 61x25x0.85mm 8-9 linear feet Floor + ceiling
Screws 44-48 units 4 per stud
Drywall 1.2x2.4m 4 sheets 1 extra (x2)

πŸ“– Glossary: What is the Steel Framing System?

Steel Framing is a construction system known by different names depending on the country:

  • πŸ‡¨πŸ‡± Chile: Metalcom, Dry Partition
  • πŸ‡ΊπŸ‡Έ USA: Steel Framing, Light Gauge Steel
  • πŸ‡ͺπŸ‡Έ EspaΓ±a: Metal Profiles, Steel Frame
  • πŸ‡²πŸ‡½ MΓ©xico: Metal Drywall, Drywall
  • πŸ‡¦πŸ‡· Argentina: Steel Framing, Durlock
  • πŸ‡§πŸ‡· Brasil: Steel Frame, LSF

Advantages of Steel Framing

  • Installation speed: Up to 3 times faster than traditional masonry
  • Lower structural weight: Reduces loads on foundations and slabs
  • Seismic resistance: Controlled flexibility during seismic events
  • Thermal & acoustic insulation: Facilitates mineral wool installation
  • Clean construction: No mortar or wet debris

πŸ”— Related calculators

Working on the whole job? Try also our false ceiling & drop ceiling calculator and the roof truss & rafter calculator.

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πŸ“ Worked example: a 3.0 m x 2.5 m partition

Wall 3.0 m wide x 2.5 m high, studs at 0.40 m. Studs = 3.0 / 0.40 + 1 = 8.5 β†’ 9 C studs (2.5 m each). Track (U) runs top and bottom: 2 x 3.0 = 6.0 m, buy 2 tracks of 3 m.

Screws: 9 studs x 2 sides x ~4 = ~72 self-drilling screws to fix studs to track, plus floor anchors every 0.5-0.6 m on the bottom track (6 anchors).

Board both faces: 3.0 x 2.5 x 2 = 15 mΒ². A 1.20 x 2.40 m sheet = 2.88 mΒ², so 6 sheets (with offcuts). Drywall screws every 25 cm: budget ~180 screws.

⚠️ Common field mistakes

  • No bottom-track anchors: the wall pivots and cracks the board joints β€” anchor every 50-60 cm into the slab.
  • Studs cut to exact ceiling height: leave a 10 mm gap so the stud floats in the track and the slab can deflect without buckling the wall.
  • Both boards joined on the same stud: stagger sheets and offset face/back joints so no seam aligns.
  • Screwing into the stud web on flat: fix into the flange; over-driven screws that tear the paper hold nothing.
  • Forgetting noggins/blocking behind heavy fixtures like TVs or cabinets.

πŸ›’ Choosing studs, gauge and board

Stud width: use 60 mm (e.g. C60) for non-loadbearing partitions up to ~3 m; go to 90 mm for taller walls, better sound or to fit thicker insulation.

Gauge: 0.5-0.6 mm steel is fine for partitions; choose 0.85 mm+ where doors, cabinets or impact loads apply.

Spacing: studs at 0.40 m give a stiffer, more soundproof wall; 0.60 m saves steel on low-traffic walls. Board: standard for dry rooms, green moisture-resistant board for bathrooms/kitchens, and a double layer or fire-rated board where you need acoustic or fire performance.

❓ Frequently Asked Questions about Steel Framing

How many self-drilling screws do I need per sq ft of steel framing?

For metal-to-metal connections in the structure, you need approximately 4-5 self-drilling screws per 10 sq ft (stud-track connections). To attach drywall sheets to the structure, an additional 25-30 screws per sheet (4x8ft) are required, installed every 6-8 inches on studs.

What is the official spacing for load-bearing vs partition walls?

According to building codes and international standards: Load-bearing walls require studs every 16 inches (structural modulation). Non-load-bearing partition walls can use spacing up to 24 inches. For seismic zones, 16 inches is always recommended regardless of wall type.

What gauge steel should I use for steel framing partitions?

For non-load-bearing interior walls: 25-gauge (0.50mm) to 20-gauge (0.85mm) profiles are sufficient. For structural walls or heights over 10ft: use 20-gauge or heavier profiles. In coastal climates, always use steel with G90 galvanization.

How do I calculate materials for a wall with a door or window?

Openings require additional headers and sills. For a door: add 2 reinforcement studs + 1 horizontal header. For windows: add 2 reinforcement studs + 1 header + 1 sill. This calculator calculates the base structure; for openings, add 15-20% extra stud profiles.

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