Section III. OPERATION UNDER USUAL CONDITIONS
2-11. ASSEMBLY AND PREPARATION FOR USE.
Prior to installing TWDS equipment, a thorough study of the terrain is required. A general route
for hoseline and general locations for the pumping stations, storage assemblies and distribution
points can be determined from examination and comparison of maps, photographs and charts. A
map and ground reconnaissance is essential. Some elements to be considered in selecting a
route and installation sites for TWDS are:
Whether TWDS will operate independently or as part of a large system.
The assigned mission for TWDS (i.e., dispensing, storing or transferring water).
Expected length of time TWDS will be required to operate.
Elevation differences and distances TWDS will encounter along its route.
Organize a ground reconnaissance prior to installation of TWDS to determine exact locations for
pumping stations, storage assemblies, and distribution points. If possible, site locations should
be near or parallel to existing roads to ease transportation, assembly, inspection, maintenance
and disassembly of the system. Avoid routes along the banks of streams, marshes, ponds,
gulleys, ravines or other areas subject to flooding. Whenever possible, the hoseline should be
laid out on firm, dry, level ground that allows easy access and is not subject to flooding.
Minimum requirements for selecting the route are as follows:
A sketch of the proposed route.
Enough topographic information (surveying altimeter elevations) to establish relative
altitude at various points along the hoseline route.
The following guidelines should be utilized to gain maximum effectiveness for installation and
operation of the system:
The route should be direct and present a minimum number of obstacles and obstructions.
A route parallel to a secondary all-weather road is preferable to one along a heavily
If roadways do not exist or cannot be utilized, select a route that is accessible to vehicles
required for laying the hoseline.
Plan to locate junction of two hoseline lengths at installation sites for each boost pumping
station and storage assembly.