June 99
2.4
The amount of earthcover required over sewer, water, and
gas lines follows:
a. Minimum cover under traffic areas shall be 900 mm
(three feet).l
b. Top of potable water and gas lines shall be at least
300 mm (one foot) below frost penetration.
c. Where practical, top of sewers shall be at least 300
mm (one foot) below frost penetration. Where such
depth below is not practical, provide supporting
foundations to such depth and securely fasten
sewer.
2.5
Do not install more than one utility in the same trench.
2.6
Maintain a horizontal distance of at least 1500 mm (five
feet) between parallel sewer and water lines.
CATHODIC PROTECTION: Determine if cathodic protection is
3.
required when ferrous piping, tanks, and conduit are to be installed
in contact with the soil. Unless a new site is involved, contact with
the VA National Cemetery's engineering personnel is adequate.
For a new site, contact the previous owner and owners of adjacent
property.
4.
WATER SUPPLY:
4.1
Investigate the use of non-potable water for irrigation.
Effect on health, grass, and irrigation equipment shall be
considered. Insure that water is available either by two
sources or on-site storage (lake, tank, etc.). Use potable
water as a last resort.
4.2
A connection to a public water company is preferred for
potable water. If a potable source is not available, provide
on-site water treatment as necessary. Provide potable
water to administration and maintenance buildings, public
restrooms, and yard hydrants. Untreated irrigation water
(not sewage effluent) may be used at flower water spigots,
with proper signage. All signage will follow cemetery
signage design
VA Design Guide -- National Cemetery Administration
Page 5 -88
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