House Plumbing system

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House Plumbing system

Unread post #1 by nick » Thu Jul 21, 2016 10:51 pm

What is the ideal pipe size for the main line of the main water source?
Is there a standard size?

I am planning to put a 3/4 size pipe for the main line of the house extension.
Is this good enough?
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Re: House Plumbing system

Unread post #2 by balarila » Thu Jul 21, 2016 10:57 pm

Best to find out what the pipe size is before the meter, then match it.
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Re: House Plumbing system

Unread post #3 by bigfoot » Thu Jul 21, 2016 11:05 pm

Also depends on layout, how many faucets,showers, multi story, etc.
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Re: House Plumbing system

Unread post #4 by bryant77 » Thu Jul 21, 2016 11:39 pm

Size of main water entrance pipe in a residential is determine by the number of fixture units and total length of the pipe.

Lavatory faucet, water closet, shower, bath tub, etc. has an equivalent fixture unit.

Habang dumadami yun mga nakakabit sa pipe mo lumalaki yun demand ng tubig (gallons per min.) Para macompensate niya yun demand requirement dapat lakihan mo yun pipe while maintaining the supply pressure.

You must also check yun pressure ng water supply sa area mo. Kung mahina ang water pressure kahit tama yun sizes ng pipe mo maaring hindi makapag supply ng tubig sa mga fixture lalo na sa shower head or 2nd floor toilet. IN this case kailangan mo magkabit ng booster pump.
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Re: House Plumbing system

Unread post #5 by Violaine » Fri Jul 22, 2016 4:57 am

i believe the water meter provided for residential water systems has an outlet for 3/4" pipes...pede naman gawin 1" yung system mo..pero medyo magastos sa pipes, fittings lalo na sa gate valve...mas malaki ang fittings, mas mahal...

i recommend 3/4" as main line..then the feeder faucets all 1/2"..kaya 3/4 to 1/2 reducer lang...mas mahirap din humanap ng 1" to 1/2" reducers...hehehe
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Re: House Plumbing system

Unread post #6 by nick » Fri Jul 22, 2016 9:12 am

Thanks Doc V, yan nga rin iniisip ko. tsaka sobrang mahal na kapag gumamit na 1" pipe lalo na kapag ppr pipes ang gagamitin.
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Re: House Plumbing system

Unread post #7 by nick » Fri Jul 22, 2016 4:12 pm

Just wondering if a P trap is needed for the flooring drain inside the Comfort Room?

In our old house, when I installed an exhaust fan, I notice that there is air coming from the drain and it smells bad.
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Re: House Plumbing system

Unread post #8 by joey81 » Fri Jul 22, 2016 5:28 pm

nick wrote: there is air coming from the drain and it smells bad.


The purpose of the trap is to prevent that from happening. Of course, it won't work if the trap is dry. Just pour water if this is the case.
If you don't want to pour water every now and then and the drain rarely sees action, cooking oil will do. It doesn't evaporate and does the job of holding the air back.
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Re: House Plumbing system

Unread post #9 by nick » Fri Jul 22, 2016 5:44 pm

How often does a flooring drain pipe get clogged?
Maybe they do not want to encounter this kind of repair when it get clogged.
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Re: House Plumbing system

Unread post #10 by joey81 » Fri Jul 22, 2016 5:58 pm

nick wrote:How often does a flooring drain pipe get clogged?
Maybe they do not want to encounter this kind of repair when it get clogged.


Depends on what you throw into it.

Our shower floor drain hasn't clogged after almost a decade of daily use. Hair that accumulates on the strainer is manually picked up and put in the trash can.
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