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ExAC Section 1 Sample Exam — 10 Free Questions

Section 1 is the broadest part of the ExAC. It tests your knowledge of architectural programming, site and environmental analysis, engineering systems integration, cost management, schematic design, and design development. The full section runs three hours, with about 96 multiple-choice questions and about 8 short written answers, drawing on your understanding of how early design decisions affect building performance, how consultants are coordinated during a project, and how sustainability goals are embedded into the design process from the outset.

These ten sample questions are drawn from the Issued for Interns question bank and reflect the style, difficulty, and subject range of the actual Section 1 exam. Work through each question at your own pace, then reveal the detailed rationale explaining why the correct answer is right and, where relevant, why the other options are wrong. No account or purchase is required. If you find the questions useful, the full study guide includes 500+ practice questions, complete timed mock exams for all four ExAC sections, and comprehensive study notes for every theme tested on the exam.

Treat these ten questions as a quick diagnostic: if the design-process and consultant-coordination reasoning feels shaky, that is where your Section 1 study time will pay off most. Every question in this sample is written by candidates who sat and passed the ExAC, to give you a sense of what you will face on exam day.

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Section 1 sample questions & answer explanations

Here are all ten Section 1 sample questions in full. Read each question, choose your answer, then expand the explanation to see the correct choice and the reasoning behind it — the same detailed rationale included with every question in the full study guide.

  1. Question 1Theme 1

    The MacLeamy Curve principle argues for 'front-loading' design effort. Which of the following project strategies is most consistent with this principle?

    MacLeamy Curve diagram showing design effort vs. time across project phases
    • AFast-tracking construction by overlapping design and construction phases
    • BInvesting more design effort at SD and DD, before CDs begin
    • CMinimizing fees at early phases to preserve budget for construction administration
    • DDeferring structural and mechanical design until construction documents are complete
    Show answer & explanation

    Correct answer: Investing more design effort at SD and DD, before CDs begin

    Front-loading means deliberately investing more design effort early — at schematic and design development — when the cost of change is low and design influence is high. This is directly what the MacLeamy Curve advocates. Fast-tracking (overlapping design and construction) is actually contrary to this principle, as it forces design decisions before they can be fully resolved.

  2. Question 2Theme 2

    Comparing building forms of equal gross floor area, which shape has the LEAST exterior surface area relative to its enclosed volume — minimizing heat loss?

    Building form diagrams comparing surface area to volume ratios
    • AA long, narrow linear bar building
    • BAn L-shaped building
    • CA cubic (square-plan) compact building
    • DA courtyard building with an internal atrium
    Show answer & explanation

    Correct answer: A cubic (square-plan) compact building

    Of all regular geometric forms, a cube has the minimum surface-area-to-volume ratio. Elongated or irregular building forms increase the ratio of exterior skin (heat loss surface) to enclosed volume. For energy efficiency in cold climates, compact square plans and multi-storey buildings are preferred over sprawling single-storey or irregular layouts.

  3. Question 3Theme 1

    Before commencing design, an architect reviews a completed functional program for adequacy. Per the AAA/MRAIC guidance on functional programming, which of the following is NOT one of the key elements the architect should check?

    • AWhether the program identifies the client's philosophy, values, goals and services
    • BWhether the program identifies the relationships between spaces (adjacencies, groupings, zoning)
    • CWhether the contractor's preferred means and methods are documented
    • DWhether capital budget estimates correspond with the space requirements (net vs. gross)
    Show answer & explanation

    Correct answer: Whether the contractor's preferred means and methods are documented

    Per the AAA/MRAIC 'Functional Programming' bulletin (June 2010), evaluating a functional program prior to design means checking that it states the client's philosophy/values/goals/services, defines space relationships, shows a reasonable correlation between activity/occupancy and the space listed, confirms capital budgets correspond with space requirements, and confirms the facility can fit the site. Means and methods of construction are a contractor concern at the construction stage, not an element of program adequacy.

  4. Question 4Theme 6

    A building has 4,500 m² of net usable area and 6,000 m² of gross floor area. What is the net-to-gross efficiency ratio, and what does it indicate?

    • A75% — 25% of the gross area is taken by circulation, structure and services
    • B133% — the building is 33% larger than its usable area strictly requires
    • C1,500 m² — the area consumed by non-usable functions
    • D60% — a below-average efficiency for a commercial office building of this size
    Show answer & explanation

    Correct answer: 75% — 25% of the gross area is taken by circulation, structure and services

    Net-to-gross ratio = Net / GFA = 4,500 / 6,000 = 0.75, or 75%. This means 75% of the building's total floor area is usable functional space; the remaining 25% is occupied by corridors, structural elements, mechanical shafts, washrooms, and wall thicknesses. Typical commercial buildings target 75–85% efficiency.

  5. Question 5Theme 7

    What is a 'light shelf' and at what project phase is it typically introduced as a passive daylighting strategy?

    • AA decorative interior shelf at the top of windows, introduced at the interior design and furnishing phase
    • BA reflective horizontal surface above eye level that bounces daylight deep inside — introduced at DD
    • CA mechanical daylight redirecting system requiring electrical operation and controls, specified at CD
    • DAn exterior horizontal shading device identical in function to an overhang, introduced at SD with massing
    Show answer & explanation

    Correct answer: A reflective horizontal surface above eye level that bounces daylight deep inside — introduced at DD

    A light shelf is a horizontal reflective surface — interior, exterior, or both — positioned at approximately head height within a window opening. It intercepts direct sunlight and redirects it upward toward the ceiling, bouncing daylight deeper into the floor plate. It simultaneously provides glare control for occupants near the window. Light shelves are a DD-level design decision because they affect the structural, glazing, and façade systems.

  6. Question 6Theme 4

    Your client's construction contract price is $4,000,000. During construction, approved change orders add $150,000 to the work, and the client's construction manager — engaged for coordination of trade procurement — is paid a $60,000 fee. GST of $80,000 applies to the contract. The client has separately budgeted $500,000 for land acquisition and $320,000 for your firm's total compensation. For the purpose of calculating your percentage-based fee under RAIC Document Six, what is the Construction Cost?

    • A$4,000,000
    • B$4,210,000
    • C$4,290,000
    • D$4,730,000
    Show answer & explanation

    Correct answer: $4,210,000

    Construction Cost is defined as the total cost of the work to the client — the construction contract price, the cost of changes to the work during construction, and construction management or procurement-coordination fees — plus all applicable taxes except Value-Added Taxes, which are explicitly excluded (GST is named as a value-added tax in RAIC Document Six). It excludes the architect's and consultants' compensation, land cost, and land development charges. $4,000,000 + $150,000 + $60,000 = $4,210,000. Including the GST overstates the figure, and including land cost and the architect's fee conflates Construction Cost with the client's broader Project Budget.

  7. Question 7Theme 3

    A long-span edge beam supports a precast GFRC rain-screen façade with narrow (10 mm) panel joints. The joints are found to open and close excessively under live load. Which beam modification most effectively tightens the joint behaviour — and why?

    • AIncrease the beam's concrete strength (f'c) to raise its load capacity under live load
    • BAdd more flexural reinforcement to increase the beam's ultimate moment
    • CReduce the beam depth to make it lighter and lower its dead-load deflection under the panels
    • DIncrease the beam depth: deflection is a stiffness problem, and stiffness rises with depth
    Show answer & explanation

    Correct answer: Increase the beam depth: deflection is a stiffness problem, and stiffness rises with depth

    Excess joint movement is a deflection (serviceability) problem, not a strength one. Deflection is inversely proportional to the moment of inertia, and I increases with the cube of depth, so increasing beam depth is by far the most effective way to reduce deflection. Brittle or precise cladding often warrants a stricter deflection limit (e.g., L/480). Raising f'c or adding reinforcement increases strength but does little for stiffness; reducing depth makes deflection worse.

  8. Question 8Theme 6

    A common rule of thumb is that useful daylighting can penetrate an interior space to a depth of approximately:

    • A1× the window head height
    • B2× the window head height
    • C3× the window head height
    • D4× the window head height
    Show answer & explanation

    Correct answer: 2× the window head height

    Daylighting is generally effective for task illumination up to a depth of approximately 2× the height of the window head above the floor. Light shelves, high windows, and reflective ceiling surfaces can extend this depth.

  9. Question 9Theme 2

    In a hot-arid climate, the recommended deviation of a building's long axis from true east-west for optimal solar and wind performance is approximately:

    • A5° toward the south
    • B12° toward the south
    • C17.5° toward the south
    • D25° toward the south
    Show answer & explanation

    Correct answer: 25° toward the south

    Optimal orientation varies by climate. In hot-arid climates, rotating the long axis up to 25° from true east-west (toward the south) is recommended — it reduces east and west exposure while capturing prevailing breezes and managing the intense solar angles characteristic of arid regions. Cooler climates use smaller deviations (12° for cool, 17.5° for temperate).

  10. Question 10Theme 7

    A frost-protected shallow foundation (FPSF) avoids extending footings below the local frost line by:

    • AUsing insulated concrete forms throughout the foundation wall
    • BIncreasing footing mass to mechanically resist frost heave forces on the underside, so that the weight of the building holds the footing down as the soil freezes
    • CPlacing vertical and horizontal insulation that keeps building and ground heat in the soil
    • DAdding electric heat-trace cable along the footing perimeter to keep the soil from freezing
    Show answer & explanation

    Correct answer: Placing vertical and horizontal insulation that keeps building and ground heat in the soil

    FPSFs use strategically placed vertical and (where required) horizontal wing insulation to reduce lateral heat loss and allow building and geothermal heat to warm the soil around the footing. Required insulation R-values and dimensions vary with the local Air Freezing Index. FPSFs are most suitable for slab-on-grade buildings on moderate-to-low sloping sites and are not appropriate for unheated structures or termite-prone areas.