A masonry takeoff is the measured quantities part of a brick and block estimate, the counts, lengths, areas, and volumes your trade bills on. Done by hand it means measuring wall area off the elevations, subtracting openings, and converting to brick count or block count with a coverage factor. Done with digital takeoff it means tracing the same walls on screen. Done with AI it means uploading the drawings and getting the same quantities in seconds, with the math shown for every number.
What You Are Counting
Masonry takeoff splits into four groups: units, mortar and grout, reinforcement, and accessories. Units by count and by square feet of wall: brick (modular, standard, or utility size) and concrete masonry units (CMU, by nominal width: 4, 6, 8, 12 inch), each tagged with its pattern and color off the spec. Mortar and grout in cubic feet, converted to bags: mortar by the joint volume, grout by the cell volume for reinforced walls. Reinforcement by count and linear feet: vertical rebar by size and length, horizontal bond beam bars by linear feet, joint reinforcement (ladder or truss type) in linear feet, and wall ties by count. Accessories in linear feet and count: lintels and bond beams at every opening, flashing at lintels, sills, and the wall base, weep vents by count, and control joints in linear feet.
Tag every line with its spec division. Masonry scope lands in Division 04 2000 (Unit Masonry) for brick and block, and crosses into 04 0500 (Common Masonry Work) for mortar and grout and 05 1200 (Structural Steel) for lintels. The division tag keeps the takeoff organized when pricing pulls from different unit cost tables.
Units and Scale
Wall area runs in square feet to one decimal, gross wall less openings. Unit count runs whole numbers, converted from area with the coverage factor for the unit size and joint thickness. Mortar and grout run in cubic feet, then bags (one bag of masonry cement yields about 3 cubic feet of mortar with three parts sand). Rebar runs in linear feet by size (number 4, 5, 6, 7, 8) and is converted to weight in pounds for pricing. Scale on elevations is usually 1/8 or 1/4 inch equals a foot. Confirm the scale bar on every sheet, and watch for wall sections and lintel schedules that print at a different scale than the elevation.
Read the wall type notes and the lintel schedule first. The wall type note gives the unit size, the joint thickness, the reinforcement spacing, and the grout pattern (solid, partial, or none). Your areas come off the elevations, but the quantities per square foot come off the wall type. Cross check the two: the wall area on the elevation should match the wall type area in the schedule. If they do not, flag it before you price.
Step by Step Takeoff
- Pull the sheets. Collect elevations, wall sections, foundation plans, lintel schedule, wall type schedule, and the masonry spec. Tag each sheet with its scale.
- Build the wall type list. Walk the wall type schedule and list every wall by type (W1, W2, W3 and so on) with its unit size, joint, reinforcement spacing, and grout. This becomes your takeoff checklist.
- Measure gross wall area. On each elevation, measure the gross wall area, length times height. Tag every wall with its wall type mark.
- Deduct openings. Subtract doors, windows, louvers, vents, and any non masonry panel from the gross area. Sum the net wall area by type.
- Convert to unit count. For brick, divide net area by the coverage factor (modular brick at 3/8 joint is about 7 brick per SF). For CMU, divide net area by the block face area (8x16 block at 3/8 joint is about 1.125 blocks per SF). Sum by type and size.
- Count reinforcement. Vertical rebar by size and spacing (typical: number 5 at 24 or 32 inches on center, full height), bond beam bars at every bond beam course, joint reinforcement in linear feet by the wall length times the number of courses.
- Count accessories. Lintels at every opening by count and length off the lintel schedule. Flashing at lintels, sills, and the base by linear feet. Weep vents above flashing by count. Control joints by linear feet.
- Apply waste and convert. Brick waste runs 5 to 8 percent, CMU 3 to 5 percent, mortar and grout 10 to 15 percent, rebar 5 to 10 percent. Wall ties count whole, one tie per 2 SF of wall as a rule of thumb.
- Export line by line. Every quantity tied to its sheet, elevation, and wall type, ready for pricing.
Manual vs Digital vs AI
Manual takeoff uses a scale wheel, highlighter, and a coverage factor chart. You measure wall area off the elevation, subtract openings by hand, and convert to brick or block count with the chart. It takes 30 to 60 minutes per elevation and is error prone when the wall has many openings or the pattern changes. Digital takeoff (on screen) trades the scale wheel for a calibrated cursor. You trace every wall and the software tracks the deductions and the conversion. It cuts the time per sheet but does not change the method, you are still the one measuring. AI takeoff reads the drawing for you. The model identifies wall types from the schedule, measures the areas, deducts the openings, and converts to unit count, mortar, and reinforcement, then reports every quantity with the math shown and a confidence flag on each line. Your job shifts from measuring to verifying the low confidence items. On a 25 sheet masonry package that is the difference between two days and two hours, with the audit trail built in.
Common Takeoff Errors
- Forgetting to deduct openings from wall area. A wall with 20 percent glass has 20 percent less masonry, and missing the deduction overstates the count by the glazing percentage.
- Mixing up nominal and actual block size. An 8 inch CMU is actually 7 5/8 inches, and the coverage factor uses the nominal face. Get it backwards and the count is off.
- Missing the bond beams. They sit at the floor lines and the lintel tops, and the bar, the block (low web), and the grout all run as separate lines.
- Forgetting the flashing. Flashing runs the full width of the wall at every lintel, sill, and the base, and it is more linear feet than people expect.
- Undercounting wall ties. The ties run one per 2 SF of wall area for veneer, and that is a separate line from the unit count.
- Missing the control joints. They run floor to floor and at every wall change, and missing them leaves the wall without a place to crack.
Putting It Together
A clean masonry takeoff reads off the wall type schedule, measures off the elevations, deducts the openings, and converts to unit count, mortar, reinforcement, and accessories, every line tagged with its wall type and spec division. Do that and your pricing step has what it needs: a quantity sheet your estimator can trust, with the math shown for every number and the waste already applied. The takeoff is not where the money is won or lost in masonry, but a sloppy one will cost you the job before pricing ever starts.