LARE Section 4 Landscape Architecture Professional Licensing Exam 2024

LARE Section 4 Landscape Architecture Professional Licensing Exam 2024 Difference between proposed and existing contours - ANS ️️ Existing are thin and dashed proposed are thicker and solid How is the flow line at the bottom of a pipe indicated? - ANS ️️ By a spot elevation Which direction to swale and drainage ditch contours point? - ANS ️️ Uphill Which direction do contour lines point along a ridge or crown of a road? - ANS ️️ Downhill At which end of a drainage pipe should you indicate an invert elevation? - ANS ️️ Both The HPS must be lower than the elevation of the object for which the swale is intended. - ANS ️️ True What side are contour lines labeled on? - ANS ️️ Uphill 1 acre =__sq ft - ANS ️️ 43,560 sf 1 square yard =__sq ft - ANS ️️ 9sqft 1 cu. yard =__cu. feet - ANS ️️ 27 cubic ft 1 mile =__ft - ANS ️️ 5,280 ft What is the rational formula for calculating stormwater runoff? - ANS ️️ Q=CIA where Q=quantity of water in units of cfs cu. ft. per second C=Cover factor for the soil and vegetation, decimal with no units percent of rainfall that runs off without infiltrating, I=rainfall intensity in inches per hour A=Area of watershed in acres - ANS ️️ How do you determine the boundaries of a Watershed? - ANS ️️ 1. Begin at collection point (lowest pt) 2. Trace a line uphill from low pt perpendicular to contours 3. when you reach a hilltop or ridge, go back a trace in other direction to top of other side. ct 2 lines by following ridge lines and saddle points What are the common units for earthworks? - ANS ️️ cu. yards or cu. meters What are the three primary methods of calculating volumes of soil for earthworks? - ANS ️️ 1. Contour Sections 2. Grid cell3. Average end area Describe the GRID cell or borrow pit method for earthwork volume calks. - ANS ️️ 1.Divides site into grid cells. Calculate change in elevation caused by grading plan at each corner of the grid.2. Cal the avg depth of cut and fill for each cell. 3. multiply the avg depth of cut and fill by area of each cell volume Describe the Average End Area Method of calculating earthwork volume. Usually used for linear objects (roads or golf holes) - ANS ️️ 1.Draw cross sections at regular intervals showing both existing and proposed elevations. 2. Measure the areas of cut and fill shown at each cross section in square inches and convert to sf. 3. average the areas of cut and fill shown between two successive cross sections. 4. Multiply the average areas of cut and fill shown b/n two successive cross sections by the distance between the cross sections on the plan to convert to