Installing new septic system in progress

[RNeumann]

Probably not in NM but around here you'd have to fill that tank so a big rain didn't float it out of the ground. Nice views, and a nice straight trench. Must not be many rocks!
Jim

Yes this standard practice. It also provides some outward pressure as you backfill- this is more for the plastic tanks.

 

[bandaidmd]

Plastic tanks are just starting to gain popularity here where im at but they have a big chunk of concrete at the base.

 

[RNeumann]

Strange! We like them because one or two guys and push them around- helps with difficult sites. Obviously the concrete makes that impossible.

 

[PILOON]

One of my scariest jobs that failed was to excavate and install a plastic tank.
OK excavation went well and client said they'd do the field next year.
Well they had no intention of doing so and simply fill that plastic.
Now I dug and installed in the fall, come spring that unused un filled plastic tank popped right out.
Some other guy strapped the tank onto some railroad ties and re buried.
Fortunately no lawyers got into the picture and we still talk amicably.

 

[Stimw]

Here in Florida you hear about people that will pump out a swimming pool to clean it and next thing you know it is above ground or partially!
You have to shock them them vacuum the trash on the bottom.
NEVER pump out the water.

 

[LS Tractor Owner]

Daily flow is based upon number of BR in the house: 300gpd for the first 2 br's, 150 gpd for any add'l br. Here in NM, the environment dept reviews plans / specs and will approve w/ any changes they deem necessary. Cost is $100.

 

[LS Tractor Owner]

Instead of caps at the end of the leach lines do 90ｰ and daylight them. I would also do clean out fittings at the beginning (tank side) of the lines and daylight those as well. Makes for easy inspection, maintenance and it's just nice to know where things are.

It's hard to tell but it looks like a simple T between the two lines. Remember the flow out of a septic tank is very minimal. With that thought the tee will have to be perfect or better to ensure even distribution between the two lines. Most would opt for a distribution box so it's easier to adjust as things move over time. You will want to mark that location too.

Based on the tank size, rock and pipe length I'm guessing a two maybe three bedroom place?

Looks good! Nice work. It's looking good out there! The panel etc also looks good! The dream is near.....

Already planned on all of the above except for the D-box. I initially drew the plan and submitted them with a distribution box, and the engineers at the environmental dept changed them and said to use a "T" instead. It sits on a concrete block which is dead nuts level. The D-box would have been easier. Your right about the size.... 3br system, but I'm building a quaint cozy 2 bar now that the kids are grown and gone.

 

[LS Tractor Owner]

Probably not in NM but around here you'd have to fill that tank so a big rain didn't float it out of the ground. Nice views, and a nice straight trench. Must not be many rocks!
Jim

Yes it was filled before backfilling. We will rarely get torrential downpours / storms that cause flash flooding and will float out a tank. The environment dept recommended to fill it and also the manufacturer. The property is on top of a hill so drainage is good. You reminded me of living back east in Bucks Co Pa when you mentioned the rocks, couldn't dig there 6 in without hitting shale. The whole trench is 5 to 5 1/2' deep and I didn't pull up 1 rock, not even a pebble bigger than a 1/4".

 

[cat fever]

I think a tee is better than a D box. Here is a picture of the failed lid on my D box. Long story short, we had back up in the basement. Now I do not have a D box.

 

[crazyal]

Unless you're building on sand around here there's no way you would get away with the leach field lines being that deep. They line them just under the surface so they drain well. 5 foot down would be hard pan on my property. You can do the work yourself still here but you do have to get a licensed engineer to design it as well as a perk test.