Hi! I need some advice for my mother's house.
The long story is that the main drainage pipe in the back alley is clogged, unusable, and unrepairable. The house is at the dead end so main pipes are small which I suppose contributed to the current situation. As a result, drainage from the house is affected.
Now our option is to tap another main drainage pipe which is supposed to be at the front of the house. Unfortunately, that pipe ends around 50 meters short from out house which I said is at the dead end. We initially agreed to shoulder the cost of tapping into that main pipe.
I told my mom not to use PVC pipes. Use concrete culverts for strength. Any more affordable but durable piping option? The pipes will run underneath the side walk then cross the street because the main drainage is at the other side of the street.
Some issues we encountered:
Neighbors won;t financially contribute, so we wont allow them to tap into out planned drainage since we will use size that will fit one household only. These neighbors are actually friends and won't admit they also have drainage problems. They are probably just waiting for someone to shoulder the cost. But we won't allow them to tap to our planned drainage to prevent future problems.
Homeowner's association cannot be depended on financially. We know this because my mom used to be an officer. A small monthly fee of around Php100 is a pain in the ass to collect in this part of the world. No money really from the association.
Re: What kind of drainage pipe to use?
PROS and CONS of using PVC pipes and using CONCRETE "culvert" pipes :
PVC pipes :
PVC pipes can easily be installed with its built in coupling or separate Tees or elbows with the use of pvc solvents. Each pvc pipes has a length of 3 meters or 10 feet and is lighter in terms of weight. Price of each pipe depends on the brand and diameter size of the pipe so better do canvas the prices. As you have said the distance from your end of your moms' house is 50 meters up to the other side of the road, so that means you will need 20 pieces of PVC pipes. If in case you will use this material, the diameter of soil diggings you will need will depend on the diameter of PVC pipes you will lay on the ditch, say 6" or 8" in diameter, maluwag na yan for your household needs. You will only need white sand for your sub soil, that's where you will lay the PVC pipes and then covering the whole length with the soil above. Installation is faster and easier.
CONCRETE "culvert" pipes :
Concrete pipes are heavier and perhaps a 6" diameter opening will suffice for your needs. But each concrete pipe measures only 1.0 meter and considering the 50 meter distance stated above, you might need 50 pieces of concrete pipes which I think will appear more expensive. Installation is somewhat different from the PVC pipes, dig the ditch deep twice its size, then a bit bigger in diameter. You will need lots of cubic of white sand and some few bags of cement. Each end to be joined will have to be applied with concrete or mortar to seal each joints. Of course you will need a "kantero" and a maybe 2 masons (helper) to do the job. Cost of each concrete pipe I think is less than 300.00 each, not so sure anymore so better do some canvassing as well plus include the number of bags of cement you will use. Installation, longer at matrabaho, labor wise mas magastos.
Study both materials to be used on the projects and weigh all angles, labor cost, material cost, installation cost and durability, etc.
Hope this helps bro, 😉 but let's wait for others to chime in specially the architects or contractors here in the forum.
CHEERS and GOOD LUCK !!! 😀
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Re: What kind of drainage pipe to use?
Hi, Thats the type work I did in Canada- excavating contractor- Don't waste time with cement pipe, this is only for a home drainage system. used thick wall PVC and make certain you have a plumbers fall which is 1/4 inch pr ft or 1 1/2 inches pr 10 ft length. put in clean outs every 30 ft and bury in soft sand for protection. Hope that helps.
