Grading And Earthwork

Question 1

Grading Terminology

Answer 1

A : Finished Grade
B : Surfacing Material
C : Base Sub-Base
D : Compacted Subgrade
E : Undisturbed Subgrade

Question 2

Of a cut or fill scenario, which is more structurally stable

Answer 2

Cut

Question 3

Volume method for cut and fill that typically overestimates volumes

Answer 3

Average End Method

Question 4

Benefits of Low impact development practices

Question 5

When siting infiltration facilities, what considerations should be kept in mind?

Answer 5

Infiltration systems (pg 161 - 164) Site engineering for Landscape Architects

Section 330 Timesavers

Question 6

Purpose of a backflow preventer

Answer 6

Used to protect potable water supplies from contamination or pollution due to backflow from the the irrigation systems into the potable water supply

Question 7

What piece of the irrigation system does this show?

Answer 7

Backflow preventor

Question 8

Difference between intensive and extensive green roofs

Answer 8

Intensive green roofs are typically over 6” of soil and more intensive plantings (trees, etc) while extensive green roofs are more often 1.6 - 6” of soil with plants like sedum and grasses.

Question 9

Term for sizing that is rounded up to the nearest whole inch. What is this sizing typically used for

Answer 9

Nominal Sizing / Lumber

Question 10

vegetative swales should be designed for what capacity

Answer 10

25 year design storm

Question 11

complex grading projects typically use what method to calculate cut and fill quantities

Answer 11

Borrow Pit

Question 12

The Rational Method of Calculation of Peak Stormwater Runoff Rates is typically used for which of the following sites?

Answer 12

Site under 200 acres in size