LARE LARE Prep Section 2

Question 1

When grading a site to direct stormwater away from a building foundation, the minimum recommended slope for the first 10 feet from the structure is:

Accepted Answer

5%

Answer

A minimum 5% slope (6 inches per 10 feet) is required for the first 10 feet away from a building foundation to prevent water infiltration.

Question 2

Under the Americans with Disabilities Act (ADA), the maximum running slope for an accessible route that does NOT qualify as a ramp is:

Accepted Answer

8.33%

Answer

An accessible route with a slope exceeding 5% is considered a ramp, so the maximum running slope for a non-ramp route is 8.33% (1:12).

Question 3

Which contour interval is most appropriate for a large-scale grading plan of a residential lot with moderate topographic variation?

Accepted Answer

1 foot

Answer

A 1-foot contour interval provides sufficient detail for residential-scale grading without excessive line density on moderate terrain.

Question 4

A landscape architect is designing a bioretention basin. The typical ponding depth allowed before overflow should not exceed:

Accepted Answer

12 inches

Answer

Bioretention basins are typically designed for a maximum ponding depth of 12 inches to ensure proper infiltration and plant survival.

Question 5

In construction documentation, a 'spot elevation' shown as 103.75 on a grading plan indicates:

Accepted Answer

The finished grade elevation is 103.75 feet above a datum

Answer

A spot elevation indicates the finished grade elevation at a specific point, measured in feet above a reference datum.

LARE Test Practice Test