Figure 4-17 Detention and Retention Ponds.
to create sun traps in the cool climate or in the
variables. The principal components of control are
temperate climate during fall and spring.
architectual structures, building and pavement
(2) Surfaces and Colors. Different surfaces and
surfaces, topography, plant material, and water.
colors increase or decrease temperature on site by
a. Temperature. Temperature on site is influ-
retaining more or less of the sun's rays. Table 4-2
gives some of the average temperatures produced
(1) Building Walls. Temperature can be in-
by different surfaces.
creased by extending buildings and building walls