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Brick Veneer Wall Tie Density Calculator

Estimate the number of wall ties needed for a brick veneer or cavity wall, per standard code coverage limits.

  • Answers as you type
  • Every formula cited
  • Calculated in your browser
SettingsSettings for this calculationUS
Market
Imperial · sales tax
The total brick veneer or cavity wall area.

The area of the leaf being TIED BACK — the veneer — not both leaves added together and not the gross elevation. A density figure is a check on a layout rather than a substitute for one: ties go on a grid set by the coursing, and the count has to land on bed joints that exist. Openings need their own extra ties around the reveals and head, and no area-based figure includes them.

Whether the site is in Seismic Design Category D or higher, or subject to wind pressure over 30 psf.

Both conditions require tighter tie spacing than standard construction.

Wall ties needed

83 ties

Medium confidence

This gives total tie count based on area coverage — additional ties are required within 12 in (305 mm) of openings and other discontinuities, and around every 3 ft (0.91 m) along their perimeter, beyond the uniform-field count calculated here.

Wall area
220 sq ft
Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

  • IRC/IBC standard: each wall tie supports no more than 2.67 sq ft of wall area in normal conditions, or no more than 2 sq ft in high seismic design categories or wind pressure exceeding 30 psf

Inputs used

Wall Area
220 sq ft
High Seismic or High Wind Area?
No (standard: 1 tie per 2.67 sq ft)

Intermediate steps

Wall area
220 sq ft
Final result83 ties

Confidence note: This gives total tie count based on area coverage — additional ties are required within 12 in (305 mm) of openings and other discontinuities, and around every 3 ft (0.91 m) along their perimeter, beyond the uniform-field count calculated here.

What this calculation does not cover

  • This is a uniform-field count taken from the gross area you type. It does not deduct window and door openings, and it does not add the extra ties required around opening perimeters or at other discontinuities — those are additional to the figure shown.
  • The 2.67 sq ft (0.25 m²) and 2 sq ft (0.19 m²) coverage limits are US IRC/IBC figures. UK, European and Australian masonry standards set tie density on a different basis, so this count does not stand in for a design to those documents.
  • It counts ties by area coverage only. It is not a structural design and does not check tie type, embedment, cavity width, the backup wall, or the fixings holding the tie to it. Where an engineer has specified a tie schedule, that schedule governs, not this number.
  • The seismic/wind switch is a two-state choice you make. The calculation does not read your site's seismic design category or design wind pressure, and there is no band between the two coverage limits.
  • It returns a total, not a layout. Setting the ties out on a grid that satisfies the coverage limit and the separate maximum horizontal and vertical spacings is a further step, and the figure carries no allowance for spares or ties lost during the lift.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

14.83 ft4.52 m14.83 ft4.52 mequivalent area220 sq ft20.44 m²5 ft2 m

Part of bigger jobs

This trade is one line of several job takeoffs. Run the whole job and every other trade comes back with it, off the same measurements.

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-09-05 · in the site-wide review of 2026-09-06 · v1.0.1

Regulatory standards & verification citations1
  1. IRC/IBC standard: each wall tie supports no more than 2.67 sq ft of wall area in normal conditions, or no more than 2 sq ft in high seismic design categories or wind pressure exceeding 30 psf

Which documents these citations point at

  • International Residential Code (United States)One- and two-family dwellings and townhouses up to three storeys — structure, fire safety, energy, plumbing, mechanical and electrical in a single document.
  • International Building Code (United States)Buildings other than the dwellings the IRC covers — occupancy, egress, fire resistance and structural provisions.

A code or standard has force only where a jurisdiction has adopted it, usually with local amendments. This site holds no adoption data for any authority, so check what is in force with the authority where you build. Any section cited above without an edition should be checked against the edition in force where you build. What it would take to know.

Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Tools and safety for this job

To lay brick and lay block. Generic types, no brands, no prices.

Protection this work requires

  • Cutting or grinding concrete, masonry, screed, tile or fibre-cement board releases respirable silica: cut wet or extract at the tool, and wear a P2/N95 respirator at minimum — a nuisance dust mask does not filter it.
  • Wet cement and lime burn skin and eyes painlessly until the damage is done: waterproof gloves to EN 374, safety glasses whenever the mix can splash, and never kneel in wet mix in permeable trousers.
  • Saws, grinders and breakers run above 85 dB, where hearing damage accumulates and does not recover: defenders or plugs for every cut, not just the long ones.
  • Breakers and grinders cause permanent nerve damage: limit continuous trigger time, keep hands warm, and stop if fingers tingle or blanch.
  • Boards, blocks and bagged material cause most lasting back injuries on small sites: two people or a lifter for full sheets, and never a bag on one shoulder up a ladder.
Show the 9 tools this job needs

Essential

  • Brick trowel and jointer

  • Mixing bucket or tub

  • Spirit level

  • String line and pins

  • Tape measure

  • Wheelbarrow

Recommended

  • Angle grinder

  • Block splitter

  • Cement mixer

Also needed as materials: cutting and diamond discs.

what each masonry tool is for, and the spec that decides which to buy where one does.

Now that you have the number

These guides cover the work this quantity is for — the first ones run this calculator inside the section that raises the question.

  • Cavity Trays Where an Extension Roof Meets the Houseuses this calculator

    The tray belongs in a bed joint under two and a half metres of standing brickwork. How to get it there in bays, without losing the panel above it.

  • Deciding Whether a Cavity Wall Should Be Filleduses this calculator

    The suitability survey takes twenty minutes and cannot be undone: what disqualifies a cavity wall from being filled, and what to do if it already was.

  • Laying Brick and Blockuses this calculator

    Every masonry wall is one course repeated: get the unit, its bed, its perpend and its bond right, and the rest is multiplication.

Called something else where you work? Cavity wall / drainage cavity · Wall ties and veneer anchors · Weep holes and cavity drainage · Cavity tray and through-wall flashing — the term in each market, how close the equivalence really is, and the standard that governs it.

Still deciding? Shelf Angles vs Wall Ties — the factors that actually differ, with no invented prices.

How to calculate brick veneer wall tie density in 3 steps

  1. Wall AreaThe total brick veneer or cavity wall area.
  2. High Seismic or High Wind Area?Whether the site is in Seismic Design Category D or higher, or subject to wind pressure over 30 psf.
  3. Wall ties neededThe tool computes the wall ties needed from those figures and shows the formula, its sources, and a confidence rating alongside it.

Wall ties needed by wall area

Page defaults, not your figures above.

Wall AreaWall ties needed (ties)
100 sq ft38
150 sq ft57
200 sq ft75
250 sq ft94
300 sq ft113
350 sq ft132
400 sq ft150

Frequently asked questions

Why do high seismic or high wind areas need more ties?
Wall ties transfer out-of-plane loads (lateral forces pushing the veneer away from the backup wall) from the veneer to the structure — higher seismic or wind demand requires each tie to support a smaller tributary area, meaning more ties overall.
Does this account for extra ties around openings?
No — code requires additional ties within 12 in of window and door openings and spaced every 3 ft around the opening perimeter, on top of the uniform field density calculated here.
What tie spacing does this correspond to in practice?
The grid has to multiply out to no more than the tributary area each tie carries. At 2.67 sq ft that is 384 sq in, so 16 in vertical by 24 in horizontal lands exactly on it and anything tighter — 16 by 16, or 16 by 20 — is inside it. Check the product yourself: a grid is only compliant if vertical spacing times horizontal spacing stays at or under the tributary area, and 24 by 32 in is 5.33 sq ft, twice what a standard tie is credited with. THIS ANSWER PREVIOUSLY GAVE A RANGE OF 16-24 IN BY 24-32 IN, whose upper end would have installed about half the ties the headline above it requires.
Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.