MAKING A DIFFERENCE IN LAOS
Hinmou Peung. Some of the 20 kids at the School.
Hinmou Pong - making ‘lids’ for the headworks tank
ROTARY GLOBAL GRANT 1412794
for water projects in Lao pdr
Lao Water Supply and Sanitation Project
3. Water source location at base of black line, taken from hilltop in Ban Naxaythong. The holding tank is located on this hilltop. Pipeline heading off to holding tank.
4. Headworks tank - slab poured. Vertical reo added, and formwork being fabricated.
5. The weir at the water source. Note - two supply pipes used - due to likely supply flow rate to holding tank vs delivery flow rate to village. Inlet filters yet to be installed.
6. The finished headworks tank prior to placing roof slabs. Concrete & steel carried up to site by local village people.
7. Holding Tank. Area for tank excavated - initially by hand, but due to volume (16m3) & soil hardness, villagers paid for excavator.
8. Holding Tank. Slab poured - 6m x 4m x 180mm - with starter bars for tank walls.
9. Holding Tank. Steel reo tied, and formwork completed. Walls 1500mm high, 180mm thick.
10. Holding Tank. 75 villagers poured the concrete walls for the holding tank - 8m3 or 19 tonnes - in 2 hours using spades & buckets, with 2 concrete mixers.
11. River Crossing. 71 metre crossing using 63mm poly pipe in position attached to anchored 14mm steel wire rope to right, concrete support post in photo centre, shear legs (at 43m point) on far bank and another concrete support post and anchor at 71m point on far bank. UV protection for the pipe was provided by cutting lengthwise some 90mm poly pipe, attaching the upper half to the top of the 63mm pipe. The coils of both pipes then acted like a spring when released from the bridge, causing the pipe to wrap python like around the cable.
12. Water Point. Slab for first water point with initial concrete batch in place, with more being mixed. The long “handle” shape coming towards camera is the diverting drain. There are eleven WP throughout the village.
school water supply
The school was intended to have water supplied to its holding tank via a pipe from the new, higher holding tank near the southern section holding tank (WP1). However, the static head of the water from the water source is too low for a new holding tank to be constructed. The head of water from the source is also too low to supply the school holding tank. Previous GPS elevations reveal that the water source at the southern section springs are at the same level as the school tank inlet. A branch pipe 200M downstream from the source at a higher position will be tested to see if there is enough head to provide a small water point downhill from the school but it is doubtful. However, over the last week the springs at the source have almost dried up. This test may be carried out when the water level rises.