CLA Site Analysis & Planning 4

Question 1

In hydrological site analysis, the term 'time of concentration' refers to:

Accepted Answer

The time for runoff to travel from the farthest point in a watershed to the outlet

Answer

Time of concentration (Tc) is the travel time of runoff from the hydraulically most distant point in the contributing drainage area to the point of interest.

Question 2

A landscape architect performing a tree survey assigns each tree a 'condition rating.' What does a condition rating of 'poor' typically indicate?

Accepted Answer

The tree has severe structural defects and declining health

Answer

A poor condition rating indicates significant structural damage, disease, pest infestation, or decline that may warrant removal or intensive treatment.

Question 3

Which planning principle best describes clustering development on a site to preserve open space?

Accepted Answer

Conservation subdivision design

Answer

Conservation subdivision design concentrates lots on a portion of a site, leaving the remainder as permanently protected open space while maintaining overall density.

Question 4

When evaluating existing vegetation for a site analysis, a landscape architect should assess all of the following EXCEPT:

Accepted Answer

Current market timber value

Answer

Timber market value is not a standard site analysis metric; landscape architects assess species, health, canopy, and ecological function of existing vegetation.

Question 5

A soil classified as 'expansive' presents which primary design concern for site planning?

Accepted Answer

Volume change with moisture fluctuations that can damage structures and paving

Answer

Expansive soils (typically high-clay content) swell when wet and shrink when dry, causing heaving, cracking, and structural damage to pavements, foundations, and walls.

(CLA) Certified Landscape Architect Practice Test

(CLA) Certified Landscape Architect Practice Test

CLA Site Analysis & Planning 4