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LARE Section Flashcards

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  1. During grading design, a landscape architect needs to direct stormwater away from a building foundation. What is the minimum recommended slope for paved surfaces adjacent to structures?

    Answer: 2.0%

    A minimum 2% slope (2 inches per 10 feet) is required for paved surfaces adjacent to buildings to ensure positive drainage away from foundations.

  2. Which soil amendment is most appropriate for improving the drainage of heavy clay soils in a landscape planting bed?

    Answer: Coarse sand

    Coarse sand, when added in sufficient quantity (at least 50% by volume), improves drainage in clay soils by increasing macropore space.

  3. A contractor submits a substitution request for a specified plant species. Under AIA contract documents, who has final authority to approve or reject the substitution?

    Answer: The landscape architect

    The landscape architect, as the design professional of record, has the authority to approve or reject substitutions during construction administration.

  4. What is the primary purpose of a retention pond in a stormwater management system?

    Answer: Permanently hold water to reduce peak runoff volume

    A retention pond permanently holds water, reducing total runoff volume and peak flow rates by capturing and storing stormwater on-site.

  5. Under the Americans with Disabilities Act (ADA), what is the maximum cross-slope allowed for an accessible route?

    Answer: 1:50 (2%)

    ADA guidelines require accessible routes to have a maximum cross-slope of 1:50 (2%) to prevent wheelchairs from drifting sideways.

  6. Which contour manipulation technique is used to create a swale that directs water around a building pad?

    Answer: Contour grading

    Contour grading reshapes the land by bending contours to redirect stormwater flow paths around structures and toward desired drainage channels.

  7. A project site has a 100-year floodplain designation. Which federal agency's regulations would most directly govern development within this area?

    Answer: FEMA

    FEMA administers the National Flood Insurance Program (NFIP) and regulates development within 100-year floodplains through floodplain management requirements.

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  1. clarb.org — Fees, retake fee, test delivery, eligibility, score release, score validity, retake policy, time limit, passing score, registration deadline · verified Oct 2026