radioman
Super Member
following -- in my situation is that the county is footing the bill to install a replacement system. their engineer is figuring on a 1275 tank for 6 bedroom but only 5 people with pump/filter and chambers lines as well.
Septic System - Infiltrator System
- Thread starter Pettrix
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OP
Pettrix
Platinum Member
Wow, that seems like a small tank for a 6 bedroom. In my area a 6 bedroom home would require 2,000 - 2,500 GAL tank.
1,275 Gallons with 5 people in the home is a small tank. It will reach capacity pretty quickly and require pumping every 2-3 years. I would upsize to a 2,000 GAL tank. We are talking maybe a few hundred dollars in costs.
TemporaryKubotaOwnerMark
Veteran Member
For filter fabric, you really should be using the non-woven. The woven stuff is more for under roadbeds to keep the gravel from sinking down into the soil.
I've seen the Mutual stuff all over the 'Net, but one thing bothers me - I can't find the weight of it anywhere. It's standard to specify ounces per square yard, but Mutual doesn't. Check their spec sheet.
OP
Pettrix
Platinum Member
The woven fabric is better that way. I don't want gravel or soil sinking into the chambers. The non-woven is the cheap landscape stuff that falls apart.
Not sure about the ounces. It's pretty heavy duty fabric according to the tests and specs it lists. Most big box store stuff doesn't even have specs.
TemporaryKubotaOwnerMark
Veteran Member
The ounces are what matters. If a manufacturer will not state the weight, be very very suspicious. That's like a tractor manufacturer refusing to state the horsepower.
You are thinking of the cheapo stuff you get at the home store. I'm talking about what highway departments and professionals use. I'm currently putting in 1000' of french drain to solve a problem on my property, and I've researched this extensively. I'm tying in to an existing french drain that was recently installed by a contractor on a neighbor's property. The shady contractor used the cheapo landscape fabric you are talking about. It's junk.
I'm using the 4 oz non-woven fabric that is spec'd by the Virginia DOT for such work. Looking at them side by side, mine is about 15 or 20 times thicker. It's like a decent blanket you'd put on your bed. It would keep you warm. Probably close to 1/8" thick. It is the CORRECT stuff for your application.
This is the stuff I'm using:
Non Woven Filter Fabric
See here for a decent competitor's citation of the VDOT specs. Note that this is specifically called, "filter fabric".
Virginia - Geotextiles & DOT Specifications - US Fabrics
US 12NW - Nonwoven Geotextile - US Fabrics
OP
Pettrix
Platinum Member
OP
Pettrix
Platinum Member
On the concrete D-Box, the box is level but I noticed that one distribution pipe is a tad lower than the other 3 pipes so during the test run that one pipe got more water flow.
I noticed that some people install the Roto-Flow or similar covers that fine tune distribution. Are those a good idea if I am experiencing the above?
I noticed that some people install the Roto-Flow or similar covers that fine tune distribution. Are those a good idea if I am experiencing the above?
OP
Pettrix
Platinum Member
If the COUNTY is paying for it, that might explain WHY they only want to install a 1275 gallon tank for a 6 bedroom home. They are cutting costs at your expense.
TemporaryKubotaOwnerMark
Veteran Member
That's the stuff you want. They call it "filter cloth".
But check around you carefully. You might find a business that sells that stuff to contractors, and get it at a cheaper price. That's what I did. It's working really well for me to be able to run grab whatever I need locally.
Check your local phone book (I know, who uses a paper phone book anymore?
) and search the 'Net.