Page 108 - GRIHA Manual Volume II - Introduction to National Rating System
P. 108
100 Griha Manual: Volume 2
# Soils: It is essential to understand the soil type as it has a direct influence on landscape water
requirements. Major classification of soils are as follows.
(a) Sandy, (b)Silt, (c) Clay. All others are combination of these three basic soil types (Figure 6).
Figure 6 Soil texture triangle
Source http://wps.prenhall.com/wps/media/objects/1411/1445480/FG12-15-20_arrows.jpg
# Soil types influence the basic intake rate of water as given in Table 4.
Table 4 Basic intake rates of soils
Soil texture class Basic intake rate (inches/hour)
Clay 0.10
Silty clay 0.15
Clay loam 0.20
Loam 0.35
Sandy loam 0.40
Loamy sand 0.50
Sand 0.60
In a nutshell, sustainable landscape planning needs understanding of the following.
# Plant water requirements
# Soil characteristics
# Irrigation system performance
# Good water managers must create/implement/adjust water application
# Properly maintain the irrigation system
# Track water use
# Soils: It is essential to understand the soil type as it has a direct influence on landscape water
requirements. Major classification of soils are as follows.
(a) Sandy, (b)Silt, (c) Clay. All others are combination of these three basic soil types (Figure 6).
Figure 6 Soil texture triangle
Source http://wps.prenhall.com/wps/media/objects/1411/1445480/FG12-15-20_arrows.jpg
# Soil types influence the basic intake rate of water as given in Table 4.
Table 4 Basic intake rates of soils
Soil texture class Basic intake rate (inches/hour)
Clay 0.10
Silty clay 0.15
Clay loam 0.20
Loam 0.35
Sandy loam 0.40
Loamy sand 0.50
Sand 0.60
In a nutshell, sustainable landscape planning needs understanding of the following.
# Plant water requirements
# Soil characteristics
# Irrigation system performance
# Good water managers must create/implement/adjust water application
# Properly maintain the irrigation system
# Track water use
