Landscape Architect Registration Exam — Questions and Answers

Question 1: A landscape architect is reviewing a contractor's pay application. The contractor claims 75% completion on a planting installation task but site observation reveals only 50% is planted. What should the landscape architect do?

Approve 75% because the contractor's judgment supersedes site observation
Reject the entire pay application until the task is 100% complete
Certify only the 50% actually installed and document the discrepancy (Correct answer)
Approve 75% to maintain a good relationship with the contractor

Correct answer: Certify only the 50% actually installed and document the discrepancy

The landscape architect must certify payment only for work actually in place; certifying false amounts exposes the owner to financial harm and the LA to liability.

Question 2: A landscape architect is designing a coastal park. Which stewardship principle should guide decisions about vegetation along the shoreline?

Remove all vegetation to maximize beach access
Plant visually striking exotic species for maximum impact
Plant dense exotic hedges to block wind
Use native coastal species adapted to salt spray and erosion to stabilize the shoreline (Correct answer)

Correct answer: Use native coastal species adapted to salt spray and erosion to stabilize the shoreline

Native coastal species are adapted to local conditions and provide ecological stability while supporting native wildlife and preventing erosion.

Question 3: A landscape architect is designing a pedestrian plaza using unit pavers. Which specification requirement is MOST important for preventing pavement failure in a cold climate with freeze-thaw cycles?

Paver absorption rate and compressive strength (Correct answer)
Paver manufacturer and country of origin
Paver color and surface texture
Paver dimensions and joint width

Correct answer: Paver absorption rate and compressive strength

In freeze-thaw climates, pavers must have low absorption rates to resist water infiltration and high compressive strength to withstand the pressures of ice expansion cycles.

Question 4: Which planting design principle recommends using odd numbers of plants in groupings to create a more naturalistic appearance?

Focal point hierarchy
The rule of odd numbers (Correct answer)
Rhythm and repetition
Mass planting theory

Correct answer: The rule of odd numbers

The rule of odd numbers holds that groupings of 3, 5, or 7 plants appear more natural and visually balanced than even-numbered groupings.

Question 5: Which erosion control measure is best suited for stabilizing a 3:1 (H:V) slope immediately after grading when revegetation will take 6–8 weeks to establish?

Straw wattle along the contour
Silt fence at the slope base only
Erosion control blanket (ECB) pinned to the slope (Correct answer)
Concrete riprap

Correct answer: Erosion control blanket (ECB) pinned to the slope

Erosion control blankets protect the soil surface immediately, hold seed and moisture, and degrade naturally as vegetation establishes.

Question 6: In landscape design, the principle of 'massing' is primarily used to achieve which of the following effects?

To establish a clear and hierarchical circulation path.
To define spatial volumes and create a sense of enclosure or openness. (Correct answer)
To draw the eye to a single, dominant feature in the landscape.
To create a sense of rhythm and repetition throughout a site.

Correct answer: To define spatial volumes and create a sense of enclosure or openness.

Massing refers to the perceived three-dimensional form and visual weight of an object or group of objects, such as plants, landforms, or structures. In landscape design, massing is a key tool used to shape space, defining areas of enclosure (like a dense planting of trees) or openness (a large lawn), thereby controlling how a user experiences the volume of the landscape. While mass can contribute to rhythm or a focal point, its primary role is spatial definition.

Question 7: A landscape architect conducts a final observation and prepares a punch list. The contractor completes all punch list items within the specified timeframe. What document should the landscape architect issue next?

Notice of Default
Certificate of Final Completion (Correct answer)
Certificate of Substantial Completion
Certificate of Occupancy

Correct answer: Certificate of Final Completion

After all punch list items are corrected, the landscape architect issues a Certificate of Final Completion, releasing final payment and triggering the start of the warranty period.

Question 8: Which bond type protects the owner if the contractor abandons the project or fails to complete it?

Maintenance bond
Payment bond
Performance bond (Correct answer)
Bid bond

Correct answer: Performance bond

A performance bond guarantees that the contractor will complete the work per the contract terms; if the contractor defaults, the surety is obligated to complete the project or compensate the owner.

Question 9: On a grading plan, a designer places a spot elevation of 102.5 at a low point in a parking lot. The nearest catch basin rim elevation is 102.0. This condition will result in:

Overflow toward adjacent streets
Ponding water at the low point (Correct answer)
Accelerated erosion
Proper drainage toward the catch basin

Correct answer: Ponding water at the low point

If the low point spot elevation (102.5) is higher than the catch basin rim (102.0), water cannot flow into the basin and will pond at the low point.

Question 10: A topographic survey shows closed contour lines with hachure marks on a site. What landform do these lines represent?

A uniformly sloped hillside
An escarpment or cliff face
A depression or closed basin collecting water (Correct answer)
A ridge with drainage flowing outward

Correct answer: A depression or closed basin collecting water

Hachure marks on closed contours indicate a depression where elevation decreases toward the center, unlike a hill where elevation increases.

Question 11: A landscape contractor wants to substitute a nursery stock species not listed in the specifications. Under standard AIA contract conditions, who must approve the substitution?

The owner only
The local planning department
The landscape architect (Correct answer)
The contractor's plant supplier

Correct answer: The landscape architect

Substitutions require the landscape architect's written approval, as the design professional is responsible for ensuring the substitution meets design intent and specification requirements.

Question 12: What is the correct sequence of components from the water meter to the irrigation zone valve in a properly designed system?

Meter → backflow preventer → master valve → filter → zone valve (Correct answer)
Meter → master valve → zone valve → filter → backflow preventer
Meter → filter → zone valve → backflow preventer → master valve
Meter → zone valve → backflow preventer → master valve → filter

Correct answer: Meter → backflow preventer → master valve → filter → zone valve

The correct sequence is: meter, then backflow preventer (protecting the potable supply), then master valve (system shutoff), then filter (protecting downstream components), then zone valves.

Question 13: Which drawing type typically shows the horizontal arrangement of site elements at a specific elevation cut?

Plan view drawing (Correct answer)
Detail drawing
Section drawing
Elevation drawing

Correct answer: Plan view drawing

A plan view drawing is a top-down horizontal cut through a site or structure showing layout at a designated elevation.

Question 14: A retention pond differs from a detention pond primarily because it:

Discharges all stored water within 72 hours of a storm
Maintains a permanent pool of water between storm events (Correct answer)
Is designed only for groundwater recharge
Uses vegetation rather than open water for treatment

Correct answer: Maintains a permanent pool of water between storm events

A retention pond maintains a permanent pool that provides water quality treatment through settling and biological uptake, while detention ponds drain completely.

Question 15: A landscape specification requires that sod be watered within 30 minutes of installation. The contractor installs sod in the morning and waters it 2 hours later due to an equipment malfunction. The sod survives. What should the landscape architect document?

A warranty claim against the contractor for potential future sod failure
Nothing, since the sod survived and there was no actual damage
A non-conformance with the specification, noting the deviation and the equipment malfunction (Correct answer)
A change order reducing the sod specification to allow 2-hour watering

Correct answer: A non-conformance with the specification, noting the deviation and the equipment malfunction

Specification deviations must be documented regardless of immediate outcome; the record protects all parties if warranty issues arise later and establishes a pattern if repeated.

Question 16: A landscape contractor discovers unmarked underground irrigation lines not shown on the contract documents. Under AIA general conditions, who bears the cost of this unforeseen condition?

The subcontractor performing the excavation work
The owner, because differing site conditions are typically the owner's risk (Correct answer)
The contractor, because site investigation is their responsibility
The landscape architect, because documents should show all utilities

Correct answer: The owner, because differing site conditions are typically the owner's risk

Under AIA A201 general conditions, differing site conditions encountered during construction that differ materially from what the contract documents indicate are compensable to the contractor at the owner's expense.

Question 17: Which soil characteristic is most important to measure before designing an infiltration-based BMP such as a permeable pavement system?

Organic matter content
Soil pH
Cation exchange capacity (CEC)
In-situ saturated hydraulic conductivity (Ksat) (Correct answer)

Correct answer: In-situ saturated hydraulic conductivity (Ksat)

In-situ saturated hydraulic conductivity (Ksat) determines how quickly water moves through the native soil, which directly controls infiltration BMP performance.

Question 18: What is the function of an anti-seep collar (seepage collar) in a stormwater pond embankment?

To prevent piping failure along the outlet pipe through the embankment (Correct answer)
To aerate water as it exits the pond
To anchor the outlet structure against flotation
To filter sediment from outlet flow

Correct answer: To prevent piping failure along the outlet pipe through the embankment

Anti-seep collars increase the seepage path length along the pipe-embankment interface, preventing piping failure — a major cause of embankment dam failure.

Question 19: What is the primary purpose of a master valve in an irrigation system?

To filter sediment from the water supply line
To individually control each irrigation zone
To boost static water pressure throughout the system
To serve as a main supply shutoff that closes whenever the controller is not actively running a zone (Correct answer)

Correct answer: To serve as a main supply shutoff that closes whenever the controller is not actively running a zone

A master valve installed at the main supply line automatically closes when no zones are running, preventing water loss from leaking or damaged downstream zone valves.

Question 20: What is a 'climax community' in the context of landscape succession?

A community dominated by annual wildflowers
A planting design that mimics natural woodland edges
The first plants to colonize a disturbed site
The stable, long-term plant community that develops after succession (Correct answer)

Correct answer: The stable, long-term plant community that develops after succession

A climax community is the stable, self-perpetuating plant community that represents the endpoint of ecological succession in a given region.

Question 21: Which specification format section typically covers 'Products'?

Part 1 – General
Part 4 – Quality Assurance
Part 2 – Products (Correct answer)
Part 3 – Execution

Correct answer: Part 2 – Products

The standard three-part specification format places material and product requirements in Part 2 – Products, covering materials, manufactured items, and mixes.

Question 22: What is the primary purpose of a flared end section (FES) at a culvert outlet?

To reduce outlet velocity and minimize erosion at the discharge point (Correct answer)
To increase pipe capacity by reducing entrance loss
To allow fish passage through the culvert
To prevent sediment from entering the pipe

Correct answer: To reduce outlet velocity and minimize erosion at the discharge point

A flared end section spreads and slows the discharge, reducing scour and erosion at the culvert outlet.

Question 23: Which of the following describes the primary function of a bioretention cell (rain garden) in a low-impact development (LID) stormwater system?

Treat sewage and stormwater in a combined system
Provide recreational amenity while storing large flood volumes
Convey runoff rapidly off-site through underground pipes
Temporarily store, infiltrate, and filter stormwater through engineered soil media (Correct answer)

Correct answer: Temporarily store, infiltrate, and filter stormwater through engineered soil media

Bioretention cells capture stormwater runoff and treat it through a combination of detention, infiltration, evapotranspiration, and filtration through engineered soil and plant systems.

Question 24: A landscape architect is calculating the Time of Concentration (Tc) for a small watershed as part of a drainage study. Which of the following design changes would result in a decrease in the Time of Concentration?

Changing the primary ground cover from asphalt to a densely vegetated meadow.
Increasing the length of the longest flow path by adding meanders to a channel.
Increasing the average slope of the overland flow path. (Correct answer)
Routing the flow through a small detention pond within the watershed.

Correct answer: Increasing the average slope of the overland flow path.

Time of Concentration (Tc) is the time it takes for runoff from the most hydraulically distant point of a watershed to reach the outlet. [6] Increasing the slope of the flow path makes the water travel faster, thus reducing the travel time and decreasing the Tc. [9] Changing to vegetation (increased roughness), lengthening the flow path, or adding detention would all slow the water down and *increase* the Tc.

Question 25: Which design strategy best exemplifies the principle of ecological stewardship when managing stormwater on a large commercial site?

Paving all surfaces to speed drainage
Creating bioretention cells and rain gardens to filter runoff on-site (Correct answer)
Directing all runoff to municipal storm sewers
Installing underground detention tanks

Correct answer: Creating bioretention cells and rain gardens to filter runoff on-site

Bioretention cells and rain gardens mimic natural hydrology by infiltrating and filtering stormwater on-site, reflecting ecological stewardship.

Question 26: What is the purpose of a check valve built into rotor and spray heads?

To filter debris before it reaches the nozzle
To prevent low-head drainage after the zone valve closes on sloped sites (Correct answer)
To limit the arc of rotation to a preset angle
To increase static pressure at the head

Correct answer: To prevent low-head drainage after the zone valve closes on sloped sites

Check valves in heads prevent low-head drainage, where water drains out of the lowest heads in a zone after the valve closes, wasting water and causing puddles or erosion.

Question 27: A final punch list is typically prepared and distributed at what project milestone?

After the contractor submits the schedule of values
At or shortly before substantial completion (Correct answer)
When the contractor requests final inspection
After the final certificate for payment is issued

Correct answer: At or shortly before substantial completion

The punch list is prepared at or near substantial completion and documents all remaining incomplete or defective items the contractor must correct before final payment.

Question 28: A site inventory reveals a seasonal high water table at 18 inches below grade. Which design response is most appropriate for a proposed lawn area?

Install subsurface drainage tiles before planting (Correct answer)
Specify drought-tolerant groundcover only
Select deep-rooted trees to lower the water table
Raise the finish grade with imported fill

Correct answer: Install subsurface drainage tiles before planting

Subsurface drainage tiles lower the effective water table and allow turf to establish healthy root zones above saturated conditions.

Question 29: Which LARE section evaluates a candidate's ability in project and construction administration?

Section B
Section A
Section C (Correct answer)
Section D

Correct answer: Section C

Section C of the LARE covers project and construction administration responsibilities.

Question 30: What is the primary purpose of a pressure vacuum breaker (PVB) in a landscape irrigation system?

To increase water pressure at the heads
To prevent backflow contamination of the potable water supply (Correct answer)
To regulate flow rate to each zone
To filter debris from the water supply

Correct answer: To prevent backflow contamination of the potable water supply

A pressure vacuum breaker prevents contaminated irrigation water from siphoning back into the potable water supply through backflow protection.

Question 31: On a grading plan, a landscape architect specifies a swale with a 2% longitudinal slope and trapezoidal cross-section. Which site condition would most likely require armoring the swale bottom?

Sandy loam soils with low clay content (Correct answer)
Areas receiving sheet flow from turf only
Flat terrain adjacent to wetlands
Silty clay soils with high cohesion

Correct answer: Sandy loam soils with low clay content

Sandy loam soils have low cohesion and are highly erodible at typical swale velocities, requiring armoring or erosion protection.

Question 32: Which scheduling technique shows task durations and overlaps on a horizontal bar chart without explicitly showing task dependencies?

Gantt chart (Correct answer)
PERT chart
Critical Path Method (CPM)
Precedence Diagramming Method (PDM)

Correct answer: Gantt chart

A Gantt chart displays tasks as horizontal bars against a timeline showing start/end dates and durations, but does not explicitly depict logical dependencies between tasks.

Question 33: Which of the following best describes the purpose of a Phase I Environmental Site Assessment (ESA)?

Testing soil and groundwater samples for contamination
Preparing a remediation plan for confirmed contamination
Reviewing historical records to identify recognized environmental conditions (RECs) (Correct answer)
Mapping wetlands and floodplains on a site

Correct answer: Reviewing historical records to identify recognized environmental conditions (RECs)

A Phase I ESA involves documentary research and site reconnaissance to identify RECs — it does not include sampling, which is Phase II.

Question 34: What is the primary purpose of a construction observation site visit by the landscape architect?

To supervise workers and direct construction methods
To observe work in progress and determine if it generally conforms to the contract documents (Correct answer)
To serve as the quality control inspector for the contractor
To manage the construction schedule on behalf of the owner

Correct answer: To observe work in progress and determine if it generally conforms to the contract documents

Observation (not supervision) involves the LA periodically observing work to evaluate general conformance with the contract documents, not directing means and methods, which is the contractor's responsibility.

Question 35: Which of the following best explains why a high curve number (CN) value is significant in a site hydrology analysis?

It signals a site where evapotranspiration exceeds precipitation
It reflects a long time of concentration reducing peak flow
It indicates soils with high infiltration capacity and low runoff potential
It indicates a watershed with high impervious cover generating large runoff volumes (Correct answer)

Correct answer: It indicates a watershed with high impervious cover generating large runoff volumes

Higher CN values in the NRCS method indicate less infiltration and greater direct runoff, producing higher peak flows for the same storm event.

Question 36: When conducting a visual inventory, the term 'borrowed landscape' refers to:

Distant views incorporated into a site design without owning that land (Correct answer)
Plantings installed on adjacent property with owner permission
Vegetation temporarily transplanted from an off-site nursery
A legally easement-protected scenic corridor

Correct answer: Distant views incorporated into a site design without owning that land

Borrowed landscape is a design concept where off-site scenery is framed and integrated into the perceived composition.

Question 37: A project specification requires 3-inch caliper balled-and-burlapped trees to have a minimum root ball diameter per ANSI Z60.1 standards. According to ANSI Z60.1, what is the minimum root ball diameter for a 3-inch caliper deciduous shade tree?

36 inches
28 inches
24 inches
32 inches (Correct answer)

Correct answer: 32 inches

ANSI Z60.1 specifies a minimum 32-inch root ball diameter for a 3-inch caliper balled-and-burlapped deciduous shade tree.

Question 38: What is the significance of a 'seasonal high water table' (SHWT) in site and planting design?

It establishes the water supply zone for irrigation system design
It defines the maximum flood elevation for stormwater detention sizing
It limits the depth for underground utilities and foundation walls
It affects plant selection, drainage design, and is often the control elevation for bioretention systems (Correct answer)

Correct answer: It affects plant selection, drainage design, and is often the control elevation for bioretention systems

The SHWT is the highest elevation that groundwater reaches seasonally, and it dictates minimum depths for underground infrastructure, influences plant selection for wet tolerance, and controls bioretention design bottom elevations.

Question 39: A stormwater swale is designed with a 3:1 (H:V) side slope. What is the primary reason for this design standard?

To comply with floodplain elevation requirements
To increase flow velocity and reduce time of concentration
To provide safe mowable slopes and reduce erosion potential on channel banks (Correct answer)
To maximize hydraulic capacity of the channel

Correct answer: To provide safe mowable slopes and reduce erosion potential on channel banks

A 3:1 side slope is stable, reduces erosion, and allows maintenance equipment such as mowers to safely operate on channel banks.

Question 40: A site inventory identifies a population of a state-listed threatened plant species. What is the landscape architect's most appropriate first response?

Proceed with design since state listing does not require federal review
Consult with the state natural heritage program and adjust site design to avoid impacts (Correct answer)
Relocate the plants to a nursery before grading begins
Remove the plants to avoid project delays

Correct answer: Consult with the state natural heritage program and adjust site design to avoid impacts

State natural heritage programs provide guidance on protected species, and the preferred design response is avoidance, not removal or relocation without agency consultation.

Question 41: A client asks a landscape architect to design a public plaza in a drought-prone region. Which planting strategy best demonstrates environmental stewardship?

Install an automatic irrigation system with turf grass
Use artificial turf to eliminate water use
Select drought-tolerant native and adaptive plants requiring minimal supplemental irrigation (Correct answer)
Plant annual flowers for seasonal color change

Correct answer: Select drought-tolerant native and adaptive plants requiring minimal supplemental irrigation

Drought-tolerant native and adaptive plants are well-suited to local climate conditions and significantly reduce water consumption once established.

Question 42: Which zoning classification typically permits a mix of residential and commercial uses in the same building or district?

C-2 General Commercial
I-1 Light Industrial
MU Mixed-Use (Correct answer)
R-1 Single Family Residential

Correct answer: MU Mixed-Use

Mixed-Use (MU) zoning allows a combination of residential, commercial, and sometimes civic uses within a single zone or building.

Question 43: Which of the following determines how much water the soil can store and is therefore the most crucial factor?

The season
The climate
The average amount of rainfall in the area
The kind of soil (Correct answer)

Correct answer: The kind of soil

The type of soil, specifically its texture (the proportion of sand, silt, and clay particles), is the most crucial factor determining its water-holding capacity. Clay soils, with their small particles and high surface area, can hold significantly more water than sandy soils, which have larger particles and greater drainage. This characteristic directly impacts plant growth, runoff, and overall hydrological processes.

Question 44: When establishing grades around a building, a landscape architect designs a minimum 2% slope within 10 feet of the foundation. This is primarily intended to:

Direct surface runoff away from the structure to prevent water infiltration (Correct answer)
Prevent frost heave from damaging the foundation
Provide accessible pedestrian clearance at building entrances
Reduce the visual impact of the building's mass

Correct answer: Direct surface runoff away from the structure to prevent water infiltration

Grading away from foundations at minimum 2% ensures surface water drains away from the building, preventing moisture infiltration into basements and crawl spaces.

Question 45: What is 'hydric soil,' and why is its presence significant on a project site?

Soil that forms under saturated conditions, indicating potential wetland jurisdiction (Correct answer)
Soil with high clay content that becomes plastic when wet
Highly porous sandy soil used for drainage layer construction
Soil amended with hydroponics nutrients for intensive planting

Correct answer: Soil that forms under saturated conditions, indicating potential wetland jurisdiction

Hydric soils form in anaerobic, saturated conditions and are one of three indicators used to delineate wetlands under federal jurisdiction, triggering permitting requirements.

Question 46: A site requires a 48-inch diameter reinforced concrete pipe (RCP) to convey the 25-year design storm. What minimum cover depth is typically required over the pipe in a roadway application?

6 inches
24 inches (Correct answer)
12 inches
36 inches

Correct answer: 24 inches

Most design standards require a minimum of 24 inches of cover over RCP under roadways to prevent pipe failure from surface loads.

Question 47: During site inventory, a landscape architect identifies a historic stone wall along the property boundary. Under the Secretary of the Interior's Standards, the preferred treatment to maintain its significance is:

Restoration removing all non-historic additions
Rehabilitation allowing compatible new uses while preserving historic character
Reconstruction using new materials to match the original appearance
Preservation in place with minimal intervention (Correct answer)

Correct answer: Preservation in place with minimal intervention

The Standards' Preservation treatment calls for stabilizing and maintaining existing historic materials with the least intervention, ideal when the resource is intact.

Question 48: When is a Request for Information (RFI) most appropriately used during construction?

When the contractor wants to substitute a specified material
When the owner wants to add scope to the project
When the contractor needs clarification on ambiguous or incomplete contract documents (Correct answer)
When the landscape architect identifies a code violation

Correct answer: When the contractor needs clarification on ambiguous or incomplete contract documents

An RFI is the contractor's formal mechanism to request clarification on unclear, conflicting, or missing information in the contract documents.

Question 49: In landscape grading design, a 2% minimum slope away from building foundations is primarily intended to:

Reduce the amount of topsoil needed on site
Ensure positive drainage that prevents water intrusion into structures (Correct answer)
Meet ADA slope requirements for accessible paths
Create visual interest in the terrain

Correct answer: Ensure positive drainage that prevents water intrusion into structures

Positive drainage away from foundations at 2% minimum prevents water from pooling against structures and causing moisture damage.

Question 50: What is the typical purpose of retainage in a construction contract?

To incentivize early completion
To provide the owner security against incomplete or defective work (Correct answer)
To compensate the landscape architect for construction administration
To fund change orders without owner approval

Correct answer: To provide the owner security against incomplete or defective work

Retainage (typically 5–10% of each progress payment) is withheld to ensure the contractor completes all work and corrects deficiencies before receiving full payment.

Question 51: Which soil pH range is considered optimal for most landscape plants in the US?

8.5–9.5 (strongly alkaline)
7.5–8.5 (moderately alkaline)
4.0–5.0 (strongly acidic)
5.5–7.0 (slightly acidic to neutral) (Correct answer)

Correct answer: 5.5–7.0 (slightly acidic to neutral)

A pH of 5.5–7.0 allows maximum nutrient availability and supports the widest range of landscape plant species in US conditions.

Question 52: A landscape architect is beginning the site analysis process for a proposed park on a large, undeveloped parcel of land. Which of the following tasks represents the 'analysis' phase, as distinct from the 'inventory' phase?

Recording the current zoning classification and applicable setback requirements for the property.
Documenting the location and species of all existing trees over 6 inches in caliper.
Mapping the existing utility lines, such as water, sewer, and electrical.
Determining the areas most suitable for active recreation based on slope, drainage, and solar access. (Correct answer)

Correct answer: Determining the areas most suitable for active recreation based on slope, drainage, and solar access.

Site inventory involves collecting and documenting existing data and features. [10, 17] Site analysis involves interpreting this data to identify opportunities, constraints, and suitability. Determining suitable areas for specific uses is a classic example of analysis because it requires synthesizing multiple inventory data points (slope, drainage, sun) to make a qualitative judgment. [10, 17]

Question 53: A contractor submits shop drawings for a site wall. The landscape architect's role is to:

Guarantee the wall's constructability
Approve the structural engineering of the wall
Negotiate pricing with the supplier
Review for general conformance with design intent (Correct answer)

Correct answer: Review for general conformance with design intent

The landscape architect reviews shop drawings for conformance with design intent, not to verify structural adequacy.

Question 54: During construction, the contractor encounters underground utilities not shown on the contract drawings. Under AIA documents, this situation is most likely covered by which clause?

Force majeure
Differing site conditions (Correct answer)
Owner-furnished information disclaimer
Contractor's risk provision

Correct answer: Differing site conditions

The differing site conditions clause protects contractors who encounter concealed physical conditions materially different from those indicated in the contract.

Question 55: Which of the following offers a top-down perspective of the rooms on a level of a building?

Site plan
Plan view (Correct answer)
Architectural plan
Architectural schedule

Correct answer: Plan view

A plan view, often referred to as a floor plan in architecture, is a drawing that depicts a building or object as if viewed from directly above, with a horizontal cutting plane typically passing through the structure. This perspective clearly shows the layout of rooms, walls, doors, windows, and other features on a specific level. It is essential for understanding spatial relationships and circulation within a building.

Question 56: A landscape architect is preparing an inventory of cultural resources on a rural site with potential archaeological sensitivity. The most appropriate baseline document to consult first is:

The State Historic Preservation Office (SHPO) files and archaeological predictive models (Correct answer)
USGS topographic quadrangle maps only
The county tax assessor's parcel map
The National Register of Historic Places listed properties database

Correct answer: The State Historic Preservation Office (SHPO) files and archaeological predictive models

SHPO files contain recorded sites, predictive models, and prior survey reports that establish baseline cultural resource sensitivity before any field investigation.

Question 57: A soil percolation test yields an infiltration rate of 0.5 inches per hour. What does this value suggest about the site's suitability for an infiltration basin?

Poor — the site is unsuitable without significant soil improvement (Correct answer)
Adequate — marginal for infiltration practices, may need amendment
Excellent — the site will infiltrate stormwater rapidly
Not applicable — percolation rate is irrelevant to infiltration basin design

Correct answer: Poor — the site is unsuitable without significant soil improvement

Most stormwater infiltration practices require a minimum infiltration rate of 0.5-1 inch per hour, so 0.5 in/hr is at the lower threshold, indicating poor suitability.

Question 58: When preparing a master plan phasing strategy, which factor should take HIGHEST priority in sequencing construction phases?

Infrastructure installation before dependent amenities (Correct answer)
Completing the largest phase first to demonstrate commitment
Aesthetic appeal of early-phase improvements
Minimizing public visibility of construction activity

Correct answer: Infrastructure installation before dependent amenities

Infrastructure (utilities, grading, stormwater) must precede dependent amenities to avoid costly retrofitting and ensure systems function correctly.

Question 59: During a site inventory, a landscape architect notes that a mature oak has a dripline extending 20 feet from the trunk. The critical root zone (CRZ) for construction protection is typically defined as:

The dripline plus a 5-foot buffer
A fixed 10-foot radius regardless of tree size
Exactly the dripline radius
1 foot of radius per inch of trunk diameter at breast height (DBH) (Correct answer)

Correct answer: 1 foot of radius per inch of trunk diameter at breast height (DBH)

Standard arboricultural practice defines the CRZ as one foot of radius per inch of DBH, which often extends beyond the visible dripline for large trees.

Question 60: A site located in USDA Hardiness Zone 7b has a mean annual extreme minimum temperature range of:

-20 degrees F to -15 degrees F
10 degrees F to 15 degrees F
0 degrees F to 5 degrees F
5 degrees F to 10 degrees F (Correct answer)

Correct answer: 5 degrees F to 10 degrees F

Zone 7b corresponds to a mean annual extreme minimum temperature of 5 to 10 degrees F per the USDA Plant Hardiness Zone Map.

Question 61: A swale is designed with a 0.5% longitudinal slope, a 4-foot bottom width, and 3:1 side slopes. If the design flow depth is 1 foot, what is the cross-sectional flow area?

5.0 sq ft
10.0 sq ft
4.0 sq ft
7.0 sq ft (Correct answer)

Correct answer: 7.0 sq ft

Area = bottom width × depth + side slope factor × depth² = (4 × 1) + (3 × 1²) = 4 + 3 = 7.0 sq ft for a trapezoidal channel.

Question 62: In planting design specifications, what does 'bare root' refer to as a method of plant installation?

Trees or shrubs sold and planted with no soil around their roots, typically dormant (Correct answer)
Plants installed without a mulch layer to expose soil
Root pruning performed at the time of planting
Planting into exposed aggregate or gravel surfaces

Correct answer: Trees or shrubs sold and planted with no soil around their roots, typically dormant

Bare root plants are dormant trees or shrubs sold with their roots exposed and no soil, which reduces shipping weight and can improve transplant success when installed correctly.

Question 63: During a pre-bid site visit, a prospective contractor notices that existing tree roots extend into the proposed paving area but are not shown on the drawings. The contractor does not raise the issue and submits a standard bid. Who bears the cost risk if root removal causes delays?

The arborist, because tree management is their specialty
The owner, because roots are a differing site condition
The landscape architect, because drawings failed to show tree roots
The contractor, because they had opportunity to observe and price the condition (Correct answer)

Correct answer: The contractor, because they had opportunity to observe and price the condition

When bidders have the opportunity to observe existing site conditions during a pre-bid walkthrough and do not raise them, they generally assume the risk of those visible conditions.

Question 64: A contractor's bid is 20% below the engineer's estimate, and all other bids cluster within 5% of each other. What is the most prudent action for the owner's team?

Reject all bids and rebid the project
Award to the low bidder immediately because the owner saves money
Investigate the low bid for potential errors or omissions before awarding (Correct answer)
Award to the second-lowest bidder as the low bid appears unreliable

Correct answer: Investigate the low bid for potential errors or omissions before awarding

An unusually low bid may indicate a mathematical error, omitted scope, or a contractor planning to recover costs through change orders; investigation before award protects the owner.

Question 65: The average end area method is used to calculate earthwork volumes. If Station 0+00 has an end area of 120 sq ft and Station 1+00 has an end area of 200 sq ft, what is the volume in cubic yards?

593 CY (Correct answer)
889 CY
481 CY
1,185 CY

Correct answer: 593 CY

Volume = ((120 + 200) / 2) × 100 ft = 16,000 cu ft ÷ 27 = 592.6, approximately 593 CY.

Question 66: A landscape architect is designing a corporate campus and wants to create a comfortable outdoor plaza for employees. The site analysis reveals that the prevailing summer wind is from the southwest. To mitigate the wind's effect and create a sheltered space, which of the following is the most effective initial design strategy?

Use light-colored paving materials to reflect solar radiation.
Orient the plaza on the northeast side of the main building. (Correct answer)
Install a large, open-bottomed pergola in the center of the plaza.
Specify only low-growing groundcovers and herbaceous perennials.

Correct answer: Orient the plaza on the northeast side of the main building.

Site analysis includes understanding climatic factors like prevailing winds to inform design decisions that enhance human comfort. [2, 9] Placing the plaza on the leeward (northeast) side of a large building will use the structure itself as a windbreak, effectively sheltering the space from the southwesterly winds.

Question 67: When writing construction documentation and specifications, which of the following procedures is NOT recommended? Pick all of them that apply.

Standard terminology should be used consistently between all document types
Specifications should list all dimensional information (Correct answer)
Installation of equipment should be described in the specifications
Specifications should be duplicated throughout the contract documents (Correct answer)

Correct answer: Specifications should list all dimensional information

When writing construction documentation, it is crucial to avoid redundancy and maintain clear divisions of information. Duplicating specifications throughout contract documents is not recommended because it can lead to inconsistencies and errors if changes are made to only one version. Similarly, specifications should not list all dimensional information; this detail belongs primarily on the construction drawings to prevent conflicts and ensure that each document type serves its distinct purpose.

Question 68: An owner asks the landscape architect to add decorative boulders to the project without a formal change order. The landscape architect should:

Refuse and insist on a properly executed change order (Correct answer)
Direct the contractor verbally and document the conversation
Add the boulders as a professional courtesy to the client
Issue a field order and notify the owner of the cost later

Correct answer: Refuse and insist on a properly executed change order

All changes to the contract scope must be formalized through a written change order to protect all parties and maintain contract integrity.

Question 69: On a site analysis plan, a 'regulating line' derived from existing site geometry is used primarily to:

Mark the boundary of a regulated wetland buffer
Establish drainage swale alignments
Define the legal property boundary setback
Organize new design elements in compositional harmony with existing features (Correct answer)

Correct answer: Organize new design elements in compositional harmony with existing features

Regulating lines connect existing site features and guide placement of new elements to create visual order and contextual fit.

Question 70: In LARE Section C (Site Design), 'universal design' means:

Maximizing site coverage for all user groups
Creating environments usable by all people regardless of age or ability without need for adaptation (Correct answer)
Designing for the average adult user
Applying the same design template globally

Correct answer: Creating environments usable by all people regardless of age or ability without need for adaptation

Universal design produces environments accessible and usable by people of diverse abilities without requiring specialized accommodations.

Question 71: A substitution request from the contractor proposes an alternative irrigation system. The landscape architect should evaluate it based primarily on:

The contractor's preference and installation experience
Whether the substitute is equal in quality, performance, and compatibility (Correct answer)
Whether the substitute is less expensive than the specified product
The manufacturer's representation that products are equivalent

Correct answer: Whether the substitute is equal in quality, performance, and compatibility

Substitution approval requires the landscape architect to evaluate whether the proposed substitute meets all performance, quality, and compatibility requirements of the specified product.

Question 72: Which outlet structure configuration best provides both water quality treatment and channel protection for a multi-stage stormwater pond?

Open weir discharging at the top of the permanent pool
Riser structure with multiple outlets at different elevations controlling different design storms (Correct answer)
Single large orifice at the pond bottom
Perforated pipe underdrain connected directly to the storm sewer

Correct answer: Riser structure with multiple outlets at different elevations controlling different design storms

A multi-stage riser with outlets at different elevations independently controls the water quality volume, channel protection volume, and peak flood control storage.

Question 73: What is 'topsoil stripping and stockpiling,' and why is it specified in landscape grading documents?

Removing contaminated fill and disposing of it off-site before grading begins
Stabilizing stripped areas with erosion control blankets during construction
Importing topsoil from off-site sources to build up low areas before planting
Removing the organic-rich A horizon before grading and replacing it after rough grading is complete (Correct answer)

Correct answer: Removing the organic-rich A horizon before grading and replacing it after rough grading is complete

Stripping and stockpiling topsoil before mass grading preserves the biologically active organic layer so it can be redistributed over finished grades to support plant establishment.

Question 74: In a planting plan, a landscape architect specifies 'Quercus rubra — 3" Cal., B&B.' What does 'B&B' indicate about the plant material?

The plant is a bare-root specimen
The plant is balled and burlapped (Correct answer)
The plant requires special bed and base preparation
The plant is grown in a biodegradable bag

Correct answer: The plant is balled and burlapped

B&B (balled and burlapped) indicates the tree's root ball was dug with soil intact and wrapped in burlap for transport and planting.

Question 75: Which of the following best represents the landscape architecture principle of 'designing for resilience'?

Creating landscapes that can absorb disturbances, adapt, and continue functioning under changing conditions (Correct answer)
Using the least expensive construction materials available
Avoiding plant species that require any maintenance
Designing with rigid geometric forms that resist modification

Correct answer: Creating landscapes that can absorb disturbances, adapt, and continue functioning under changing conditions

Resilient design anticipates change and stress — from climate, use, or disturbance — by building in adaptability and redundancy at the landscape systems level.

Question 76: Which riparian buffer vegetation strategy provides the greatest water quality improvement by removing agricultural nutrients from field runoff?

Maintained turf grass strip
Row of evergreen trees only
Hardscape channel with bioswale
Dense herbaceous filter strip with native grasses (Correct answer)

Correct answer: Dense herbaceous filter strip with native grasses

Dense native herbaceous filter strips slow runoff velocity, promote infiltration, and uptake nutrients through active plant growth and dense root systems.

Question 77: A landscape architect is reviewing a submittal from a contractor for a custom-designed steel planter. The submittal includes detailed fabrication drawings, material specifications, and finish samples. What is the primary purpose of the landscape architect's review of these shop drawings?

To check for dimensional accuracy for the purpose of quantity take-offs and payment.
To approve the contractor's choice of material suppliers and fabricators.
To verify the contractor's means and methods of construction.
To ensure the proposed planter conforms to the design intent shown in the contract documents. (Correct answer)

Correct answer: To ensure the proposed planter conforms to the design intent shown in the contract documents.

The landscape architect's primary responsibility when reviewing shop drawings is to confirm that the contractor's interpretation of the design, as detailed in their drawings, aligns with the original design intent, performance requirements, and aesthetics specified in the construction documents. The review is not for approving means and methods, which are the contractor's responsibility, nor for selecting suppliers or verifying quantities for payment.

Question 78: In land use planning, a 'buffer zone' between industrial and residential districts primarily serves to:

Maximize developable area in the residential zone
Increase tax revenue for the municipality
Provide additional parking for industrial facilities
Mitigate noise, odor, and visual impacts through transitional land uses or vegetation (Correct answer)

Correct answer: Mitigate noise, odor, and visual impacts through transitional land uses or vegetation

Buffer zones use transitional uses, berms, or dense planting to absorb and mitigate impacts before they reach sensitive adjacent land uses.

Question 79: During construction administration, a contractor submits a Request for Information (RFI) about an apparent conflict between the civil drawings and the landscape drawings. What is the landscape architect's primary responsibility?

Notify the owner and halt construction until the conflict is resolved
Review the conflict and issue a written response clarifying design intent (Correct answer)
Issue a change order immediately to resolve the conflict
Direct the contractor to use the civil drawings as the controlling document

Correct answer: Review the conflict and issue a written response clarifying design intent

The landscape architect must review the RFI and issue a timely written response that resolves the conflict and clarifies design intent without necessarily requiring a change order.

Question 80: In landscape architecture practice, what is the purpose of a 'mockup' during the construction phase?

A shop drawing submitted by the contractor for design review
A scaled model of the project for client presentations
A preliminary cost estimate for owner approval
A full-size sample of materials or construction methods for review and approval before full installation (Correct answer)

Correct answer: A full-size sample of materials or construction methods for review and approval before full installation

A mockup is a full-scale physical sample of construction work installed on-site so the designer, owner, and contractor can evaluate quality, appearance, and technique before proceeding.

Landscape Architect Registration Exam

The LARE is a four-section exam administered by CLARB that assesses the knowledge, skills, and abilities required to practice landscape architecture competently without endangering public health, safety, or welfare. Candidates must pass all four sections to qualify for licensure.

Questions

105 min

Time Limit

65%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds