my renovation size..at the back..


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TQ steve8...the drawing i design for my front house is cater when i want to renovate my front house..there is no porch that can accommodate 6 cars yet..that my dream..hehehe...not start saving for my front house renovation....for my newly extension house at the back is attached to the existing front house...i did not apply new water meter. for my main pipe after meter using 1 1/4 inches pipe..then branches into two..the water volume and pressure is good..no drop of pressure.

ya...i agreed with you..i notice that stainless steel when syabas change my main pipe before meter last week..i notice that the stainless steel quite thin like what you said..for new reno house better use this stainless steel like what you said....maybe a bit costly compared to poly...but this SS is good whoever what to install pump..can stand pump pressure.

yes..it depend on the impurity of the SS..some manufacture had 'campur' the ss with other thing, mau untung lebih...so it depend on the manufacture..but i believed if SIRIM approved, no problem.

i dont mean that the SIRIM approved is not rust..but the quality at least better than without SIRIM..

update on the pic my ABS that eat by anti termite acid as i mention before.

it really 'leak'..my water bill cost RM80 and the water flow to my neighbour house. all 5 locations where i put the anti termite.

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Added on April 3, 2012, 8:05 amyes, sure already dilute but still the ABS cannot stand.

This post has been edited by tomjason: Apr 3 2012, 08:06 AM

if you want good water flow follow my design.

http://forum.lowyat.net/topic/2271767

by the way..there is no such thing as termite eat poly pipe..i think that contractor just want fool you.

This post has been edited by tomjason: Apr 24 2012, 12:02 PM

Most importantly is the selection of right size of your piping and not to share the outlet between toilet........if you are not clear or confident as ozak suggest check the pressure first.

hi bro solame:

this is my calculation:

using formula :

Pressure = a + rho*gravity*height

a = atmosphere pressure (normally not count)

So after few calculation:

1 meter height of tank = 0.102 kg/cm^2 pressure.

3.3 meter (10 ft normal house height) = 0.3366/0.07 = 4.80 psi.

that your water pressure on upper floor or single storey house.

For pressure at ground floor (for double strorey house). Total height ~ 23 fts. So pressure at ground floor is (7.67 meter) = 0.7823/0.07 = 11 psi.


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My house is single storey height = 12 fts (4 meters). Pressure is 0.408/0.07 = 5.82 psi. Therefore with pressure 5.82 psi and combination of 1 inches and 3/4 inches of pipe, you can have good shower head without pump.

I do not know about height 10 fts = 4.80 psi can have good shower or not. but certainly the pipe size is important.
In my opinion should be no problem as the differences is 5.82 psi - 4.80 psi = 1.02 psi only.

This post has been edited by tomjason: Apr 25 2012, 04:55 PM

bro, not 0.07 psi difference but 1.02 psi dfifferences..

for your case....just use water heater with pump for upper storey and downstair...let say you want install pump later..then just install the pump...

for me....i not keen on pump as later after few years using....there could be water leaking due to high pressure of the pump...

This post has been edited by tomjason: Apr 26 2012, 10:16 AM