Sunday, April 24, 2011


General sequence of Water Main Pipe laying works.
  1. Site survey and setting out.
  2. Site clearing.
  3. Earthwork and trenching
  4. Pipe laying and Jointing works
  5. Piling to Man hole/ service hall/valve chamber
  6. Piling to anchor Block/thrust block
  7. Construction of man hole /chamber/bridge/Thrust block
  8. Testing
  9. Rectification of pipe ( if any)
  10. Testing and commissioning
  11. Back filling to Pipe trench
  12. Site tidying prior to handing over for completion
  13. Handing over for completion.
*Item,5,6 and 7 can be done concurrently with item 4.
*Item no.8 can be perform segment by segment
( lat say every 100m of installed and jointed pipe.)

Type of testing to be performed.
  1. Pressure test.
  2. Leakage test
  3. Welding test ( in the case of mild steel pipe is in use)
Pipe flushing

Thursday, April 7, 2011

Wan's Journal: Engineering Marvel of Japan's Highrise Building

Wan's Journal: Engineering Marvel of Japan's Highrise Building: "Earthquake resistance building design will sway without collapsing in the advent of a powerful earthquake. This video shows the marvel of su..."