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#1
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3' Tree Grown over Drain - How to bypass
A maple tree approximately 3 feet in diameter
has grown over a waste water drain. Roto- rooter could not get through. My idea is to dig down and install a bypass around the maple tree. How far out from the tree should the bypass go? Is it going to work? |
#2
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Al wrote:
A maple tree approximately 3 feet in diameter has grown over a waste water drain. Roto- rooter could not get through. My idea is to dig down and install a bypass around the maple tree. How far out from the tree should the bypass go? Is it going to work? Yes, it will work. Use 45's, not 90's to form the loop. Things you'll have to consider though: If the sewers are deep where you live, that will be a LOT of digging/trenching thru heavy root infestation. If there wasn't much slope to begin with in the lateral, you'll have to lay the pipe very carefully to avoid low spots and you'll wind up with precious little slope to boot. In olden times, the water service line was often laid in the same trench with the sewer (although may be on a "shelf"). You might get assistance from the utility in locating. During actual digging, keep a metal detector handy. The pipe has to be well-supported by firm earth so that it doesn't droop as time goes by. You'll probably need a permit for the work (depending). They may dictate what materials you are allowed to use. I would install a Cleanout TEE at the top of the loop (nearest house) and stub it up to ground level. Jim |
#3
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Speedy Jim wrote:
Al wrote: A maple tree approximately 3 feet in diameter has grown over a waste water drain. Roto- rooter could not get through. My idea is to dig down and install a bypass around the maple tree. How far out from the tree should the bypass go? Is it going to work? Yes, it will work. Use 45's, not 90's to form the loop. Things you'll have to consider though: If the sewers are deep where you live, that will be a LOT of digging/trenching thru heavy root infestation. The house is about 100 years old. My parents bought it in the late 1940s. My mother has a picture showing the tree when it was about 4' in diameter. A horse and buggy are in the picture, too. This is out in the country. Well, at least it used to be country. If there wasn't much slope to begin with in the lateral, you'll have to lay the pipe very carefully to avoid low spots and you'll wind up with precious little slope to boot. That is my big unknown. Everybody is building new houses. (How is your new house?) It is almost impossible to find someone who will do the job. I had originally thought of a backhoe, but all I could find was someone with a trencher. Then I thought maybe a trencher would be better. I am still trying to figure out how far out from the tree to start. The cleanout T is a good idea. Thanks. In olden times, the water service line was often laid in the same trench with the sewer (although may be on a "shelf"). You might get assistance from the utility in locating. During actual digging, keep a metal detector handy. The pipe has to be well-supported by firm earth so that it doesn't droop as time goes by. You'll probably need a permit for the work (depending). They may dictate what materials you are allowed to use. I would install a Cleanout TEE at the top of the loop (nearest house) and stub it up to ground level. Jim |
#4
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"Speedy Jim" wrote in message ... Al wrote: A maple tree approximately 3 feet in diameter has grown over a waste water drain. Roto- rooter could not get through. My idea is to dig down and install a bypass around the maple tree. How far out from the tree should the bypass go? Is it going to work? Yes, it will work. Use 45's, not 90's to form the loop. Things you'll have to consider though: If the sewers are deep where you live, that will be a LOT of digging/trenching thru heavy root infestation. If there wasn't much slope to begin with in the lateral, you'll have to lay the pipe very carefully to avoid low spots and you'll wind up with precious little slope to boot. In olden times, the water service line was often laid in the same trench with the sewer (although may be on a "shelf"). You might get assistance from the utility in locating. During actual digging, keep a metal detector handy. The pipe has to be well-supported by firm earth so that it doesn't droop as time goes by. You'll probably need a permit for the work (depending). They may dictate what materials you are allowed to use. I would install a Cleanout TEE at the top of the loop (nearest house) and stub it up to ground level. What Jim said is all very valid, but before I picked up a shovel, I would make a visit to whatever agency owns the line in the street, and see if it would maybe be simpler and about as cheap to pick another route, and run an entire new line, abandoning the old one. A new plastic line is gonna last longer and give less trouble than an old iron or orangeburg or tile or whatever line made up of 4-foot sections. Even if the cost is a little higher, it will likely pay on resale. On an older house, 'new sewer line' is a big selling point to anyone who had to screw with the sewer in their previous house. On a rental I own down south, after about the second time it backed up (crushed due to frost heave), I said the hell with it and replaced it all, from cleanout to street. Not a problem since. If a new route is not an option, answer to your 'how far out' question is 'beyond the drip line', since that usually defines the size of the root footprint. Given how big the tree is, that may be out a ways, so a new route may be a shorter run than the bypass route anyway. I remember as a kid in 1966, we planted a weeping willow in back yard, a little too close to the sewer line, as it turned out. Just a twig, shorter than me. By 1972 when family went broke and had to sell, it was taller than the 3-story chimney. Never had a backup, though. Guess the root fingers were small enough, or the line oversize enough, that there was still enough passage for the flow. aem sends.... |
#5
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On Sat, 02 Apr 2005 15:27:36 -0500, someone wrote:
How far out from the tree should the bypass go? Is it going to work? If you go around 3 sides of the tree too close to it, you will cut off the roots and kill it anyway (worst of both worlds - did the work and still lost the tree). You would have to be as far out as the crown diameter of the tree to be "safe" - you might "get away" with less depending on the health of the tree, but I am sure not gonna go "out on a limb" for how close - and I bet neither would any excavating contractor want to guarantee the tree (at what value for example). Best would be to entirely re-route the line (as someone else said) then to try and go 3 sides around. I'd guess you have a sentimental attachment to the tree, or else cut 'ere down! Reply to NG only - this e.mail address goes to a kill file. |
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