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newSchoolWorks.com › VoTechWorks › Building & Construction › Masonry › Layout & Leveling › Lesson 7
BLD-MASO04-10 · Lesson 7 · 13 clock hours · field

Integrated Layout Project: Full Foundation Line and Grade Setup

Objective. Students will independently execute a complete layout sequence—batter boards, square corners, mason's lines, laser-transferred grades, and a story pole—for a simulated 16 × 24 ft building footprint, producing a signed layout record.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a licensed professional engineer or master tradesperson or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.

VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.

Integrated Layout Project: Full Foundation Line and Grade Setup

A masonry project lives or dies by its layout. If corners are out of square, walls drift; if grades are wrong, drainage fails and finished floors slope. This lesson brings together every layout skill you have practiced—batter boards, diagonal squaring, mason's lines, laser grade transfer, and story poles—into one complete field sequence performed on a simulated 16 × 24 ft building footprint.

Why a Written Layout Plan Comes First

Professional masons never walk onto a site and begin driving stakes from memory. You start with the site plan, identify the control point or benchmark, and write down every step before you touch a tool. Your written plan should list: (1) the order of operations, (2) the diagonal check length you expect, (3) all four corner grade elevations, and (4) the story-pole course heights. Submitting that plan for instructor review is not a formality—it mirrors real jobsite practice where a foreman or superintendent reviews layout before concrete is placed. Errors caught on paper cost nothing; errors caught after block is laid cost days.

Batter Boards

Batter boards are temporary horizontal boards nailed to stakes set back from each corner, far enough that they will not be disturbed when you excavate or dig footings. On a 16 × 24 ft layout, set your batter-board stakes roughly 2–3 ft outside each corner. Drive stakes in pairs at each corner location and nail a horizontal board across them at a consistent height. The board must be level; use your 4-ft mason's level. Saw kerfs (notches) into the top edge of each board to hold the mason's line in a fixed, repeatable position. If a line is accidentally knocked off, it drops back into its kerf exactly where it was.

Establishing Square Corners

You will use the 3-4-5 rule (or its multiples) combined with a diagonal check. For a rectangle, both diagonals must be equal when the corners are truly square. With a 16 × 24 ft footprint, the theoretical diagonal is calculated with the Pythagorean theorem:

√(16² + 24²) = √(256 + 576) = √832 ≈ 28.84 ft

Both diagonals must measure within 1/4 inch of each other. If Diagonal A is longer, move the corners on that diagonal closer together along the longer wall until both match. Adjust the lines at the batter boards—never pull up stakes.

Transferring Grade with a Rotating Laser

Once lines are squared, you must set each corner at the correct elevation. Your benchmark (a known elevation marked on a stake or existing structure) is your starting reference. Set the rotating laser on a stable tripod near the center of the layout where the beam can reach all four corners. With the detector on the grade rod, read the height of the instrument (HI) at the benchmark. Then move the rod to each corner batter board or hub stake and raise or lower the rod until the detector signals the beam. Mark that point. The difference between your HI reading and your target elevation tells you exactly where to make your grade mark. All four grade marks must fall within ±1/8 inch of the design elevation.

Safety note: Never look directly into a rotating laser beam. Class 2 and Class 3R lasers used in construction can cause eye injury. Always use the detector; do not sweep the beam at eye level of other workers.

The Story Pole

A story pole is a straight, plumb rod marked with every course height—typically the mortar bed plus the unit height—from the footing to the top of the wall. You fabricate this before layout so it is ready to use as soon as grade is set. At one corner hub, hold or stake the pole plumb (check with a level on two adjacent faces) and verify that the first course mark aligns with your grade elevation. The pole must be plumb to 1/8 inch over its full height. A story pole eliminates the need to measure individual courses and keeps coursing consistent around the entire building.

The Field Book

Every measurement, adjustment, and observation goes into your layout field book in ink, in real time. Record: the benchmark elevation, instrument height, rod readings at all four corners, diagonal measurements (both), and the final grade elevations. Sign each entry with the date and time. Your field book is a legal record. On real projects, it protects you and your employer if questions arise later about whether layout was done correctly.

Peer Review

After you complete your layout, you and your partner swap field books. Your partner re-measures your diagonals and re-checks your grades with the laser detector. Any discrepancy beyond tolerance is flagged. You then explain the source of the error and make corrections before both of you sign the final record. This mirrors quality-control practice on commercial sites where a second crew member or inspector independently verifies layout before the general contractor approves proceeding.

Safety on the Layout Site

Key terms10

Batter boardA temporary horizontal board nailed to stakes set outside the building corners; it holds mason's lines in fixed, notched positions so lines can be removed and replaced accurately during excavation and layout.
Diagonal checkA squareness verification method in which both diagonals of a rectangular layout are measured; equal diagonals confirm that all four corners are at 90 degrees.
BenchmarkA known, fixed elevation point on or near a job site used as the starting reference for all grade measurements.
Height of instrument (HI)The elevation of the rotating laser beam above a known datum, determined by reading the rod at the benchmark; used to calculate grade at all other points.
Grade rodA graduated measuring rod held vertically at a survey point so that a laser detector or level instrument can read the elevation at that location.
Story poleA site-fabricated straight rod marked with the height of every masonry course—unit plus mortar joint—from footing to top of wall, used to maintain consistent coursing around the entire structure.
KerfA saw notch cut into the top edge of a batter board to hold a mason's line in a precise, repeatable position.
Rotating laser levelAn instrument that projects a 360-degree horizontal beam of laser light, allowing the user to transfer a single elevation to multiple points around a job site quickly and accurately.
PlumbPerfectly vertical, as confirmed with a plumb bob or a level; a story pole or wall face must be plumb to transfer accurate measurements.
Layout field bookA bound notebook in which all field measurements, rod readings, adjustments, and signatures are recorded in ink as a permanent, auditable project record.

Worked examples4

1. Calculate the theoretical diagonal length for a 16 × 24 ft rectangular footprint so you know what both tape readings should equal when corners are square.
  1. Write the Pythagorean theorem: diagonal = √(length² + width²)
  2. Substitute the known dimensions: diagonal = √(24² + 16²)
  3. Square each term: 24² = 576; 16² = 256
  4. Add: 576 + 256 = 832
  5. Take the square root: √832 = 28.844 ft
  6. Convert the decimal to inches: 0.844 ft × 12 in/ft ≈ 10.1 in, so the diagonal is approximately 28 ft 10-1/8 in
  7. Both diagonals must read within 1/4 in of this value (28 ft 10-1/8 in ± 1/8 in each) of each other for corners to be considered square.
Answer: Theoretical diagonal ≈ 28 ft 10-1/8 in. Both measured diagonals must be within 1/4 in of each other.
2. The benchmark elevation is 100.00 ft. You set the rotating laser on a tripod and hold the grade rod on the benchmark; the detector reads 5.25 ft above the benchmark. The design calls for the top of footing at all four corners to be at elevation 99.50 ft. What rod reading should the detector show when you are at the correct footing elevation at each corner?
  1. Calculate the height of instrument (HI): HI = benchmark elevation + rod reading at benchmark = 100.00 + 5.25 = 105.25 ft
  2. The target elevation at each corner is 99.50 ft
  3. Calculate the required rod reading at the corner: rod reading = HI − target elevation = 105.25 − 99.50 = 5.75 ft
  4. When the detector on the grade rod signals the beam at a corner stake, the rod reading at that point should be 5.75 ft for the grade mark to be at elevation 99.50 ft
Answer: The detector should signal at a rod reading of 5.75 ft. Mark that point on the stake as the top-of-footing grade at that corner.
3. You have stretched both diagonals on your 16 × 24 ft layout. Diagonal A measures 28 ft 10-3/8 in and Diagonal B measures 28 ft 10-0 in. Is the layout within the 1/4 in tolerance, and if not, how much must you adjust?
  1. Convert both diagonals to the same unit for comparison. Diagonal A = 28 ft 10-3/8 in; Diagonal B = 28 ft 10-0 in
  2. Find the difference: 10-3/8 in − 10-0 in = 3/8 in
  3. Compare to tolerance: 3/8 in > 1/4 in, so the layout is NOT within tolerance
  4. The difference exceeds tolerance by 3/8 in − 1/4 in = 1/8 in
  5. To correct: shift the corner(s) on the longer diagonal (Diagonal A) inward. Because the diagonal difference is shared across two corners, move each corner on Diagonal A approximately half the excess inward (about 1/16 in each), or move one corner the full 1/8 in, re-measure, and repeat until both diagonals are within 1/4 in of each other.
Answer: The layout is out of tolerance by 1/8 in. Adjust corners along Diagonal A inward until both diagonals are within 1/4 in of each other.
4. You are fabricating a story pole for an 8-in CMU wall. Each course is 8 in high (7-5/8 in unit + 3/8 in mortar joint). The wall design calls for 8 courses above the top of footing. At what height above the footing grade mark do you place each course mark on the story pole?
  1. Confirm course height: 7-5/8 in (unit) + 3/8 in (mortar joint) = 8 in per course
  2. Course 1 top: 1 × 8 in = 8 in above footing
  3. Course 2 top: 2 × 8 in = 16 in above footing
  4. Course 3 top: 3 × 8 in = 24 in above footing
  5. Course 4 top: 4 × 8 in = 32 in above footing
  6. Course 5 top: 5 × 8 in = 40 in above footing
  7. Course 6 top: 6 × 8 in = 48 in above footing
  8. Course 7 top: 7 × 8 in = 56 in above footing
  9. Course 8 top: 8 × 8 in = 64 in = 5 ft 4 in above footing
  10. Mark each of these heights on the story pole with a clear line and course number; the bottom of the pole sits on the footing grade mark
Answer: Marks at 8, 16, 24, 32, 40, 48, 56, and 64 in (5 ft 4 in) above the footing grade mark, one mark per course.

The math in this lesson2

Learners compute the 16×24 ft diagonal, laser height of instrument, and CMU story-pole marks for eight courses.
N-Q.3G-SRT.8
Brush up in the math halls at newSchoolWorks.com:
In class: Pre-job planning: each student reads a provided site plan, lists all layout steps in sequence, calculates the diagonal check length and required grade elevations, and submits a written layout plan for instructor review before touching any tools. · Full layout execution: working individually (with a partner standing by for rod holding only), the student sets batter boards, squares corners, stretches lines, transfers the benchmark grade to all four corners using the rotating laser, and installs a story pole at one corner; all work is recorded in a layout field book. · Peer review and defense: student pairs swap field books and measure each other's work with a tape and laser detector; discrepancies are flagged, the builder explains and corrects any out-of-tolerance condition, and both students sign off on the final record.
Materials: 2×4 lumber, wood stakes, sledge, 100-ft tape, mason's line, line level, plumb bob, 4-ft mason's level, rotating laser level with detector, grade rod, story pole (student-fabricated), field book, pencils, camera; full PPE: hard hat, safety glasses, high-visibility vest, work gloves, steel-toed boots; NCCER Masonry Level 2 Layout module
Check: All four corners square to within 1/4 inch diagonal difference; all four grades within ±1/8 inch of target; story pole plumb to 1/8 inch over full height; written layout plan submitted before work begins; field book complete and co-signed by peer. Pass = all tolerances met and documentation complete.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

NCCER Masonry – Layout and Leveling
1. What is the primary purpose of cutting a kerf into the top edge of a batter board?
NCCER Masonry – Layout and Leveling
2. For a 16 × 24 ft rectangular footing layout, both diagonals must measure within how much of each other for corners to be considered square to the project tolerance used in this lesson?
NCCER Masonry – Layout and Leveling
3. A student sets a rotating laser on a tripod. The benchmark elevation is 100.00 ft and the rod reads 4.50 ft at the benchmark. The target footing elevation is 99.00 ft. What rod reading should trigger the laser detector at the correct footing grade?
NCCER Masonry – Layout and Leveling
4. You measure Diagonal A at 28 ft 10-1/2 in and Diagonal B at 28 ft 10-1/8 in on a 16 × 24 ft layout. Which statement is correct?
NCCER Masonry – Layout and Leveling
5. On a story pole for standard 8-in CMU construction (7-5/8 in unit, 3/8 in mortar joint), where is the top-of-course mark for Course 5 measured from the footing grade mark?
NCCER Masonry – Professional Practices
6. Why must a written layout plan be submitted for instructor review before any field work begins on the integrated layout project?
OSHA 10 – Hazard Recognition and Control
7. Which OSHA 10 hazard control best applies when a rotating laser level is in use on a shared layout site?
NCCER Masonry – Layout and Leveling
8. During peer review, your partner finds that one corner grade is 3/16 in above the target elevation. According to the pass criteria for this lesson, what must happen next?
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