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LARE Section 4 study materials
LARE Section 4 study resources

LARE Section 4 practice questions

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Question 1Section 1

A grading plan proposes a 3:1 slope on a 12-foot cut. The soil is a stiff clay with a cohesion that the geotechnical report characterizes as adequate for a 2:1 slope. What is the primary purpose of the flatter 3:1 slope in this design?

  1. To reduce the volume of cut material that must be hauled off site
  2. To provide a stable surface for establishment of vegetation and reduce erosion Correct answer.
  3. To minimize the footprint of the disturbed area on the site
  4. To satisfy the maximum allowable slope for maintenance equipment access

Explanation

Flatter slopes are commonly specified on cut faces where the steeper stable angle would still be acceptable structurally but would be difficult to plant and would erode. The flatter gradient reduces raindrop impact velocity and surface runoff velocity, improving vegetation establishment and long-term stability. Structural stability alone does not require the flatter slope in this case.

Question 2Section 1

In a landscape grading plan, a swale is designed to convey stormwater around a building rather than across a walkway. Which grading element most directly controls where the swale directs flow?

  1. The longitudinal slope of the swale invert Correct answer.
  2. The depth of the topsoil layer
  3. The soil texture of the subgrade
  4. The high point, or ridge, of the graded surface

Explanation

The longitudinal slope of the swale invert establishes the downhill direction of flow along the channel and also influences flow velocity. Ridges divide the surrounding drainage areas and direct runoff toward swales, but they do not directly determine the direction of flow within the swale.

Question 3Section 1

A retaining wall 4 feet high is proposed along a property line. Which condition most commonly triggers the need for a building permit and engineered design for such a wall?

  1. The wall is located within 10 feet of a sidewalk
  2. The wall retains soil above a threshold height set by the local code, often around 4 feet Correct answer.
  3. The wall includes a decorative cap
  4. The wall is built of segmental block rather than cast-in-place concrete

Explanation

Most jurisdictions exempt low retaining walls from permit requirements but require permits and often engineering above a threshold height, commonly around 4 feet of retained soil. Material type, proximity to a sidewalk, and decorative features do not by themselves trigger structural review. The threshold is set locally and should always be verified.

Question 4Section 1

During construction administration, a contractor proposes substituting a different paver unit for the specified product. The designer determines it is an acceptable equal. What is the appropriate next step?

  1. Direct the contractor verbally to proceed and document later
  2. Reject the substitution because equals are not permitted after bidding
  3. Issue a written substitution approval or change order documenting the acceptance Correct answer.
  4. Require the contractor to submit a new bid for the entire project

Explanation

Acceptance of a substitution must be documented in writing so that the contract record reflects the approved product and any cost or schedule adjustments. Verbal direction leaves the project exposed to disputes at closeout. A formal substitution approval or change order is the standard instrument.

Question 5Section 1

A landscape architect is preparing a planting plan for a site where the client wants low maintenance and drought tolerance. Which specification approach best supports that goal?

  1. Specify species and cultivars by botanical name with size and quality standards Correct answer.
  2. Specify only the total number of plants without species
  3. Specify plants by common name only, allowing the contractor latitude
  4. Specify a plant list without quantities, leaving counts to the contractor

Explanation

Plant specifications should identify plants by botanical name, including cultivar where relevant, along with size, root condition, and quality standards so that substitutions and inspections are enforceable. Common names alone are ambiguous because they vary regionally. Quantities and species must both be specified for a bidable, verifiable plan.

Question 6Section 1

A site plan shows a proposed building pad at elevation 100.0 and an adjacent parking area at 98.5. The designer wants positive drainage away from the building. What is the most direct way to verify that intent on the grading plan?

  1. Check that contour lines slope away from the building pad toward the parking area Correct answer.
  2. Confirm the building pad is the lowest point on the site
  3. Verify that all contours are equally spaced
  4. Confirm that the parking area drains toward the building

Explanation

Positive drainage away from a structure is read from contour lines falling away from the building toward lower areas. If contours rise away from the pad, water will pond against the building. Equal contour spacing indicates uniform slope, not direction.

Question 7Section 1

Which document in a construction package typically establishes the legal relationship between the owner and the contractor, including scope, time, and payment terms?

  1. The general conditions
  2. The agreement between owner and contractor Correct answer.
  3. The technical specifications
  4. The supplementary conditions

Explanation

The owner-contractor agreement is the contract instrument that binds the parties and incorporates the other documents by reference. General conditions and specifications define obligations and quality but are not the binding agreement themselves. Supplementary conditions modify the general conditions.

Question 8Section 1

An irrigation designer is laying out sprinkler heads for a rectangular lawn. Which spacing principle best promotes uniform coverage?

  1. Placing heads only at the corners of the lawn
  2. Spacing heads at twice their published throw distance
  3. Spacing heads according to the pipe diameter
  4. Head-to-head spacing so each head throws to the adjacent head Correct answer.

Explanation

Head-to-head spacing, in which each sprinkler throws to the next, provides the overlapping coverage needed for uniformity and compensates for wind and pressure variation. Spacing at twice the throw leaves dry gaps between heads. Corner-only placement cannot cover the interior.

Question 9Section 1

A client asks why a rain garden is proposed at a low point in the landscape rather than on a slope. Which explanation is most accurate?

  1. Rain gardens must be located on fill soils
  2. Low points allow stormwater to collect and infiltrate rather than run off Correct answer.
  3. Slopes cannot support any herbaceous plants
  4. Low points have higher soil fertility than slopes

Explanation

Rain gardens are depressional practices that capture and infiltrate runoff from contributing areas, so they are placed at low points where water naturally collects. Placing them on slopes would cause water to bypass the facility. Soil fertility and fill requirements are not the governing rationale.

Question 10Section 1

A landscape architect is asked to reduce the urban heat island effect on a plaza. Which design strategy most directly addresses that goal?

  1. Increasing the amount of dark asphalt paving
  2. Reducing the number of trees to improve wind flow
  3. Replacing planted areas with concrete
  4. Increasing the reflectivity of paving and adding tree canopy shade Correct answer.

Explanation

High-albedo paving reduces absorbed solar radiation, and tree canopy provides shade and evapotranspirative cooling, both of which lower surface and air temperatures. Dark asphalt absorbs more heat and worsens the effect. Removing vegetation and paving over planting areas also increase heat.

Question 11Section 1

A site has a shallow seasonal high water table. Which planting approach is most appropriate for the lowest, wettest portion of the site?

  1. Specify xeric species adapted to arid conditions
  2. Specify species tolerant of periodic saturation and fluctuating water levels Correct answer.
  3. Specify plants that require consistent irrigation during dry periods
  4. Specify upland species that require well-drained soils

Explanation

Species selection should match the hydrologic regime of the planting area. Plants tolerant of periodic saturation and fluctuating water tables are appropriate where the water table rises seasonally. Upland and xeric species would be stressed by saturated conditions.

Question 12Section 1

A client wants a cost estimate early in schematic design. Which estimating method is most appropriate at that stage?

  1. A detailed quantity takeoff from completed construction documents
  2. A unit-cost or parametric estimate based on comparable projects Correct answer.
  3. A lump-sum quote from a single subcontractor
  4. A final bid comparison from invited contractors

Explanation

Early design stages lack the detail needed for a quantity takeoff, so parametric or unit-cost estimates based on comparable projects provide a reasonable order-of-magnitude figure. Detailed takeoffs require completed documents. Bid comparisons and subcontractor quotes come later in the process.

Question 13Section 1

A contractor requests clarification of an ambiguous detail in the drawings during construction. What is the standard procedure?

  1. The contractor halts all work on the project indefinitely
  2. The contractor contacts the owner directly for a decision
  3. The contractor proceeds with its own interpretation and submits an as-built
  4. The contractor submits a request for information and the designer responds in writing Correct answer.

Explanation

Ambiguities are resolved through a written request for information so that the answer becomes part of the project record and is distributed consistently. Proceeding on an individual interpretation risks nonconforming work. Direct owner contact bypasses the contractual chain of communication.

Question 14Section 1

Which characteristic of a soil most directly influences its suitability as a subgrade for a paved walkway?

  1. Its color
  2. Its pH
  3. Its organic matter content in the topsoil
  4. Its bearing capacity and drainage behavior Correct answer.

Explanation

Subgrade performance depends on the soil's strength, compressibility, and drainage behavior under load and moisture. Color and pH have no bearing on structural suitability, and organic topsoil is unsuitable as subgrade regardless of its organic content.

Question 15Section 1

A project requires a pedestrian route that meets accessibility standards. Which combination of features is essential to verify on the plan?

  1. Plant species, irrigation type, and soil texture
  2. Running slope, cross slope, clear width, and surface condition Correct answer.
  3. Light fixture wattage and pole spacing
  4. Wall height, footing depth, and reinforcement

Explanation

Accessible routes are defined by limits on running slope, cross slope, clear width, and surface firmness and stability, along with passing spaces and level landings. Plant and irrigation details do not define route accessibility. Wall and lighting dimensions are separate design concerns.

Question 16Section 1

A client is concerned about long-term maintenance of a large turf area. Which design alternative most effectively reduces mowing and irrigation demand while retaining usable open space?

  1. Replacing turf with a meadow or low-mow grass mix Correct answer.
  2. Switching to a higher-input turf cultivar
  3. Adding more irrigation heads to the turf zone
  4. Increasing the turf area to spread wear

Explanation

Meadow or low-mow grass mixes reduce mowing frequency and irrigation demand while preserving open space. Expanding turf and adding irrigation increase maintenance inputs. Higher-input cultivars generally increase water and nutrient requirements.

Question 17Section 1

A retaining wall is proposed on a slope where the soil behind it is saturated during wet seasons. Which design consideration is most important to address?

  1. The height of the wall cap
  2. The type of jointing on the wall face
  3. The color of the wall facing
  4. Drainage behind the wall to relieve hydrostatic pressure Correct answer.

Explanation

Saturated backfill exerts hydrostatic pressure that can greatly exceed the design load of a drained wall, so subsurface drainage and free-draining backfill are essential. Facing color, cap height, and jointing are architectural considerations that do not address the pressure problem.

Question 18Section 1

During a site visit, a landscape architect observes that installed trees have root balls planted several inches below finish grade. What is the most likely consequence and appropriate correction?

  1. The trees will grow more upright
  2. The trees may suffocate and decline; they should be replanted with the root flare at grade Correct answer.
  3. The trees will require less irrigation
  4. The trees will establish faster because roots are protected

Explanation

Planting too deep buries the root flare, reduces oxygen exchange to the roots, and commonly leads to decline and girdling roots. The standard correction is to reset the tree so the root flare sits at or slightly above finish grade. Faster establishment and reduced irrigation are not benefits of deep planting.

Question 19Section 1

A grading plan must accommodate an accessible ramp between two terraces. Which slope condition is most critical to verify for compliance?

  1. The cross slope of the ramp exceeds the running slope
  2. Only the running slope is regulated
  3. Both running slope and cross slope are within allowable limits Correct answer.
  4. Only the landing dimensions are regulated

Explanation

Accessible ramps are regulated for both running slope and cross slope, in addition to landings and handrails. Cross slope limits are typically stricter than running slope limits because lateral tilt is difficult for many users. Regulating only one dimension leaves the route noncompliant.

Question 20Section 1

A site plan proposes a bioretention cell with an underdrain. Which design element most directly determines whether the cell will function as intended?

  1. The infiltration rate of the native soil and the elevation of the underdrain Correct answer.
  2. The species of ornamental grass used
  3. The width of the adjacent sidewalk
  4. The color of the mulch on the surface

Explanation

Bioretention performance depends on the infiltration capacity of the underlying soils and on the underdrain elevation, which sets the internal water storage and drawdown time. Mulch color and plant species are secondary, and sidewalk width is unrelated to cell hydrology.

Question 21Section 1

A landscape architect is reviewing a contractor's pay application. The contractor has completed 60 percent of the planting but has not yet installed the irrigation system. How should the designer evaluate the application?

  1. Certify payment based on measured completed work and stored materials, consistent with the schedule of values Correct answer.
  2. Approve only the planting line and ignore all other items
  3. Approve the full contract amount because planting is underway
  4. Reject the application because irrigation is not complete

Explanation

Pay applications are certified based on the measured value of completed work and stored materials as reflected in the schedule of values, less any retainage. Approving the full amount overpays for unperformed work. Rejecting the application because one item is incomplete is also incorrect.

Question 22Section 1

A client wants a courtyard that is comfortable in summer afternoons. Which combination of design moves most effectively reduces afternoon heat exposure?

  1. Shade from trees or structures on the west side and light-colored paving Correct answer.
  2. A dark paved surface with no shade
  3. Removal of all vegetation to increase airflow
  4. Reflective glass walls facing west with no overhangs

Explanation

Afternoon sun comes from the west, so shading the west side with trees or structures blocks low-angle solar gain. Light-colored paving reflects rather than absorbs solar radiation. Dark paving and unshaded west-facing glass increase heat gain.

Question 23Section 1

A grading plan shows a level area at the top of a slope with no visible drainage outlet. What is the most significant concern?

  1. The area will require additional topsoil
  2. Water may pond or saturate the slope crest, reducing stability Correct answer.
  3. The level area will drain too quickly
  4. The slope will become too dry

Explanation

A level area without a defined outlet can pond water, and saturation at the crest of a slope reduces soil strength and can trigger instability. Positive drainage and a defined outlet are needed. Rapid drainage and dryness are not the concern in this configuration.

Question 24Section 1

A project team is selecting a tree for a narrow planting strip between a sidewalk and a street. Which criterion is most important to evaluate?

  1. The tree's native range
  2. The fragrance of the flowers
  3. The mature canopy spread and root habit relative to the strip width Correct answer.
  4. The fall color of the foliage

Explanation

In a narrow strip, mature canopy spread and root habit determine whether the tree will conflict with the sidewalk, curb, and overhead clearance. Fall color and fragrance are aesthetic attributes. Native range is relevant to adaptability but does not address the spatial constraint.

Question 25Section 1

A contractor proposes to stockpile topsoil on site during construction. Which practice best protects the resource for later use?

  1. Stockpile in the drainage swale to slow runoff
  2. Stockpile in a low, wet area and compact it to save space
  3. Stockpile separately, keep it vegetated or covered, and avoid compaction Correct answer.
  4. Mix the topsoil with subsoil to increase volume

Explanation

Topsoil should be stripped and stockpiled separately, protected from erosion and compaction, and kept viable for respreading. Compacting or placing it in wet areas destroys structure and drainage. Mixing with subsoil dilutes quality, and blocking a swale impedes drainage.

Question 26Section 1

A landscape architect is preparing construction documents for a public park and must specify how the contractor will be paid for planting installation. Which contract delivery method transfers the greatest design responsibility to the contractor while allowing early selection based on qualifications?

  1. Design-build with a qualifications-based selection Correct answer.
  2. Multiple prime contracts coordinated by the owner
  3. Construction management at risk with a guaranteed maximum price
  4. Design-bid-build with a lump-sum contract

Explanation

Design-build combines design and construction under one entity, so the contractor assumes substantial design responsibility and can be selected on qualifications before a complete design exists. Design-bid-build separates design from construction and awards to the low bidder after documents are complete. CM at risk and multiple primes retain an architect-led design role.

Question 27Section 1

During administration of a construction contract, the landscape architect issues a written interpretation of the drawings that clarifies intent without changing cost or time. This document is best described as which of the following?

  1. A punch list item
  2. A request for information
  3. A change order
  4. A supplemental instruction or clarification Correct answer.

Explanation

A written interpretation that clarifies the contract documents without altering cost or time is typically issued as a supplemental instruction or clarification. A change order modifies cost or time and requires execution. An RFI is a contractor's question, and a punch list records incomplete or defective work near completion.

Question 28Section 1

A landscape architect is assembling a cost estimate during design development when major materials are known but quantities are still approximate. Which estimating approach best matches this stage?

  1. Assembly or systems estimate based on typical unit costs Correct answer.
  2. Parametric estimate using cost per square meter of site area
  3. Bid-based estimate from contractor quotations
  4. Detailed quantity takeoff from final drawings

Explanation

At design development, assemblies or systems estimating uses typical unit costs for defined components such as paving assemblies or planting beds, matching the level of detail available. Parametric estimates suit earlier schematic phases, and detailed takeoffs require completed documents. Bid-based figures come only after contractors price the work.

Question 29Section 1

A landscape architect must verify that a proposed walkway meets accessibility requirements for running slope along its length. Which condition should be confirmed on the grading plan?

  1. Landings are provided at intervals along the slope
  2. Running slope along the path of travel stays within the maximum permitted grade Correct answer.
  3. The walkway width equals the minimum clear width at every point
  4. Cross slope does not exceed the maximum allowed for the walkway

Explanation

Running slope governs the longitudinal grade a pedestrian travels along the path, and it must stay within the maximum permitted grade for the walkway classification. Cross slope, clear width, and landings are also regulated, but the question asks specifically about running slope along the length. Confirming grade on the grading plan is the direct check.

Question 30Section 1

A site plan shows a proposed swale intended to convey stormwater from a parking lot to a bioretention area. Which design check is most important to confirm that the swale will function as intended?

  1. The swale invert slopes continuously toward the outlet Correct answer.
  2. The swale side slopes are planted with turf
  3. The swale is located along the property line
  4. The swale is lined with an impermeable membrane

Explanation

A conveyance swale depends on continuous positive slope along its invert so gravity moves water to the outlet without ponding or reverse grades. Turf planting, membrane lining, and property-line location do not by themselves ensure conveyance. A flat or undulating invert is a common failure that causes standing water.

Question 31Section 1

A landscape architect is evaluating a soil report for a site where a rain garden will infiltrate runoff. Which soil property most directly indicates whether infiltration will be adequate?

  1. Plasticity index
  2. Dry density
  3. Liquid limit
  4. Saturated hydraulic conductivity Correct answer.

Explanation

Saturated hydraulic conductivity describes how readily water moves through saturated soil and is the key indicator of infiltration capacity for a rain garden. Plasticity index and liquid limit describe clay behavior and workability, and dry density describes compaction. These influence design but do not directly measure infiltration rate.

Question 32Section 1

A client wants a playground surface that reduces injury risk from falls while remaining accessible for wheelchairs. Which surface strategy best satisfies both goals?

  1. A unitary surface such as poured-in-place rubber Correct answer.
  2. Compacted native soil with a turf cover
  3. Wood chips replenished annually
  4. Loose pea gravel at the minimum depth

Explanation

A unitary surface like poured-in-place rubber provides tested impact attenuation and a firm, stable, slip-resistant surface that supports wheelchair access. Loose materials such as pea gravel, wood chips, and turf over soil can meet impact criteria but are difficult for wheelchair users and require ongoing maintenance. The combined fall-safety and accessibility requirement points to a unitary product.

Question 33Section 1

A landscape architect is preparing a planting plan for a site where deer browsing is a known problem. Which approach is most reliable for long-term performance?

  1. Selecting species documented as resistant and protecting vulnerable plants with fencing Correct answer.
  2. Applying a repellent once at installation
  3. Choosing the fastest-growing available species
  4. Planting densely so deer cannot enter the bed

Explanation

Deer resistance varies by region and season, but selecting species documented as less palatable combined with physical protection for vulnerable plants is the most reliable long-term strategy. A single repellent application loses effectiveness, fast growth does not deter browsing, and dense planting does not prevent deer access.

Question 34Section 1

A grading plan proposes a level terrace at the top of a cut slope with no shown outlet for surface water. What is the most significant concern with this design?

  1. The terrace will create a shadow condition
  2. The terrace will reduce soil bearing capacity
  3. Water will pond or erode the slope face where it overtops Correct answer.
  4. The terrace will increase wind exposure

Explanation

A level terrace with no outlet collects runoff, which ponds until it overtops and erodes the slope face or destabilizes the cut. Grading design must provide positive drainage from every level area. Wind exposure, bearing capacity, and shadowing are not the primary consequence of missing drainage.

Question 35Section 1

A landscape architect is reviewing a contractor's schedule of values for a project with substantial planting. Which practice best supports fair progress payments for planting?

  1. Deferring all planting payment until final completion
  2. Paying based on the nursery invoice alone
  3. Paying proportionally as plants are installed and accepted, with retainage held Correct answer.
  4. Paying the full planting line item when plants are delivered to the site

Explanation

A schedule of values should allocate payment to installed and accepted work, so planting payments track installation progress with retainage withheld to protect the owner. Paying on delivery or invoice alone pays for uninstalled material. Deferring all payment until final completion is unfair to the contractor and not standard practice.

Question 36Section 1

A landscape architect is designing a memorial plaza where the client wants a strong sense of enclosure and a quiet, contemplative character. Which spatial strategy most directly supports that intent?

  1. Selecting bright, high-contrast paving patterns
  2. Reducing the number of trees to open sightlines
  3. Using tall walls or dense canopy to define edges and limit views outward Correct answer.
  4. Increasing paving area to accommodate large events

Explanation

Enclosure and contemplation are created by defining edges and limiting outward views through vertical elements such as walls or dense canopy. Reducing vegetation and opening sightlines does the opposite. Large event paving and high-contrast patterns increase activity and visual stimulation rather than quiet enclosure.

Question 37Section 1

A landscape architect is developing a concept for a site with a steep slope and mature trees. Which analysis is most useful for locating development while preserving existing vegetation?

  1. A zoning map alone
  2. A soil pH map alone
  3. A slope and tree inventory map overlaid to identify constraints Correct answer.
  4. A utility locate map alone

Explanation

Overlaying slope analysis with a tree inventory reveals where steep grades and significant trees coincide, directly informing where development can occur with least impact. Soil pH, utilities, and zoning are relevant but do not by themselves identify slope and vegetation constraints together.

Question 38Section 1

A client asks why a landscape architect recommends amending compacted subsoil with organic matter before planting trees in a new development. Which explanation is most accurate?

  1. It eliminates the need for irrigation permanently
  2. It increases soil strength for structural support
  3. It improves porosity, aeration, and root penetration Correct answer.
  4. It raises the pH to neutralize acidity

Explanation

Compaction reduces pore space, limiting air and water movement and root growth. Organic amendment improves porosity, aeration, and root penetration in the planting area. It does not increase structural strength, reliably raise pH, or remove the need for irrigation.

Question 39Section 1

A landscape architect must specify a tree for a planting strip between a sidewalk and a street where overhead clearance is limited and salt spray occurs in winter. Which selection criterion is most important?

  1. A species with a small mature size and documented salt tolerance Correct answer.
  2. A species requiring consistently moist soil
  3. A fast-growing species with aggressive surface roots
  4. A species with heavy fruit production

Explanation

In a narrow strip with limited overhead clearance and winter salt, mature size and salt tolerance are the decisive criteria. Aggressive surface roots, heavy fruit, and high water demand create maintenance and safety problems in this setting. Matching mature size and tolerance to the constraint is the primary selection rule.

Question 40Section 1

A landscape architect is preparing a maintenance manual for a newly installed irrigation system. Which item is most important to include for long-term water efficiency?

  1. The contractor's business license number
  2. The manufacturer's warranty card
  3. The pipe trench depth record
  4. A seasonal controller schedule and instructions for adjusting it Correct answer.

Explanation

A seasonal controller schedule with instructions for adjustment lets the owner match irrigation to plant needs and weather, which is the most direct driver of long-term efficiency. Warranty cards, trench records, and licensing information are administrative and do not guide water management.

Question 41Section 1

A site design proposes a permeable paver parking area over a subbase intended to store runoff. Which condition is most critical to verify for the system to perform as designed?

  1. The subgrade infiltrates at a sufficient rate or has an underdrain outlet Correct answer.
  2. The parking stalls meet minimum dimensions
  3. The area is adjacent to the building entrance
  4. The pavers are a light color

Explanation

A permeable pavement system with storage subbase depends on either adequate subgrade infiltration or an underdrain to release stored water. Without one of these, the storage fills and the system fails. Paver color, stall dimensions, and entrance proximity affect other concerns but not hydraulic performance.

Question 42Section 1

A landscape architect is asked to reduce the volume of irrigation water used on a large lawn area. Which strategy most directly reduces demand at the source?

  1. Replacing a portion of lawn with regionally adapted low-water plantings Correct answer.
  2. Increasing the irrigation run time per zone
  3. Adding more sprinkler heads to the remaining lawn
  4. Mowing the lawn more frequently

Explanation

Converting lawn to regionally adapted low-water plantings reduces the planted area that requires irrigation, cutting demand at the source. Additional heads, longer run times, and more frequent mowing do not reduce water demand and may increase use.

Question 43Section 1

A project team is preparing a landscape plan for a site adjacent to a wetland. Which regulatory step is most likely required before construction can proceed?

  1. Recording a deed restriction on the property
  2. Filing a building permit for the irrigation system
  3. Obtaining a permit addressing impacts to the regulated wetland and buffer Correct answer.
  4. Submitting a traffic impact study

Explanation

Work near a regulated wetland typically requires a permit addressing impacts and buffer protection under applicable regulations. Deed restrictions, irrigation permits, and traffic studies do not address wetland impacts. Identifying the applicable regulatory program early is essential to schedule and design.

Question 44Section 1

A landscape architect is reviewing a contractor's submittal for a custom site furnishing. Which action best ensures the product matches the design intent before fabrication?

  1. Filing the submittal without review
  2. Reviewing dimensions, materials, and finishes against the specification and returning comments Correct answer.
  3. Forwarding the submittal directly to the owner for approval
  4. Approving the submittal without comment to save time

Explanation

Submittal review compares the proposed product against the specification for dimensions, materials, and finishes and returns comments so fabrication proceeds correctly. Approving without review, forwarding to the owner, or filing without review defeats the purpose and shifts risk improperly.

Question 45Section 1

A landscape architect is designing a plaza that must manage stormwater on site. Which combination of strategies best supports both infiltration and water quality treatment?

  1. Continuous impervious paving with a single catch basin
  2. Grading all runoff to the storm sewer without pretreatment
  3. Bioretention areas with engineered soil media and an overflow outlet Correct answer.
  4. Buried tanks that discharge directly to the sanitary sewer

Explanation

Bioretention with engineered media provides filtration and infiltration, and an overflow outlet safely passes larger storms. Impervious paving, direct discharge to storm sewer, and sanitary sewer discharge either prevent treatment or violate typical discharge rules. The combination of treatment media and controlled overflow is the sound approach.

Question 46Section 1

During construction, a landscape architect observes that installed trees have root flares buried below the finished grade. Which response is most appropriate?

  1. Accept the work because the trees appear healthy
  2. Direct the contractor to raise the trees so the root flare is at or slightly above grade Correct answer.
  3. Defer the issue to the maintenance period
  4. Require additional mulch to cover the buried flare

Explanation

A buried root flare restricts gas exchange and can lead to decline or girdling roots, so the trees should be raised to set the flare at or slightly above finished grade. Accepting the work, adding mulch, or deferring the issue allows a defect to persist. This is a common installation error that warrants correction.

Question 47Section 1

A landscape architect is preparing a site plan that must show existing and proposed contours. Which convention best communicates drainage intent to the contractor?

  1. Contours at a consistent interval with spot elevations at critical points and flow arrows Correct answer.
  2. A single contour line across the entire site
  3. Contours only at the property boundary
  4. Spot elevations only, with no contours

Explanation

Consistent contour intervals combined with spot elevations at critical points and flow arrows clearly communicate grades and drainage direction. Boundary-only contours, spot elevations alone, or a single contour line leave the contractor unable to interpret surface drainage.

Question 48Section 1

A client wants a planting design that provides year-round interest in a cold climate. Which approach best achieves this goal?

  1. Relying on a single species of spring-flowering shrub
  2. Selecting tropical species for bold foliage
  3. Planting only annuals for continuous color
  4. Combining evergreens, winter-interest bark, and multi-season perennials Correct answer.

Explanation

Year-round interest in a cold climate comes from layering plants with different seasonal attributes such as evergreen structure, winter bark, and multi-season bloom. A single spring shrub, annuals only, or tender tropicals leave long periods without interest or fail in cold conditions.

Question 49Section 1

A landscape architect is evaluating whether a proposed retaining wall needs a geotechnical review. Which condition most strongly indicates that review is warranted?

  1. The wall retains a slope above it and supports a surcharge load Correct answer.
  2. The wall is made of modular block
  3. The wall is under 600 mm tall and supports a planting bed
  4. The wall is located near a sidewalk

Explanation

Walls that retain sloping ground above them or carry surcharge loads experience significantly higher lateral pressures and overturning risk, justifying geotechnical review. Low walls supporting only a bed, block construction, and sidewalk proximity are common conditions that do not by themselves require review.

Question 50Section 1

A landscape architect is asked to improve pedestrian comfort along a wide, unshaded sidewalk on a hot summer day. Which measure most directly reduces radiant heat exposure for pedestrians?

  1. Increasing the sidewalk width
  2. Installing shade trees or shade structures along the walk Correct answer.
  3. Changing the paving color to a darker tone
  4. Adding wayfinding signs

Explanation

Shade from trees or structures intercepts solar radiation before it reaches pedestrians and pavement, directly reducing radiant heat exposure. Wider walks, signage, and darker paving do not provide shade and darker paving may increase heat absorption.