I would like to move my washer and electric dryer from their present location off the kitchen, to the back inside wall of my detached garage.

It is approx. 35' from the back of the house, to the location in the garage. My house has no basement, but has a crawl space underneath. I 've checked underneath the house, and the main 4" sewer line at it's lowest, is 18" below grade, as it exits the front footing, heading to the street.

Question... Am I correct in thinking that the 1-1/2" drain line for the washer, would need 1/8" of fall for every foot?. so it would only have to fall a minimum of 5- 1/2"... for the 35' run?
This seem do-able... does it not?

SWA

Ps. Just so you know, I am a licensed Electrical Contactor, and have been in the construction industry my whole life.
Oh, and I live in so. California, so we won't have to be walking through snow to go get the laundry ;-)


SWA

I think that drop will be fine - especially considering you won't have any solids going through it.

I would like to move my washer and electric dryer from their present location off the kitchen, to the back inside wall of my detached garage.

It is approx. 35' from the back of the house, to the location in the garage. My house has no basement, but has a crawl space underneath. I 've checked underneath the house, and the main 4" sewer line at it's lowest, is 18" below grade, as it exits the front footing, heading to the street.

Question....Am i correct in thinking that the 1-1/2" drain line for the washer, would need 1/8" of fall for every foot?...so it would only have to fall a minimum of 5- 1/2"...for the 35' run?
This seem do-able...does it not?

SWA

Ps. Just so you know, I am a licensed Electrical Contactor, and have been in the construction industry my whole life.
Oh, and I live in so. california, so we won't have to be walking thru snow to go get the laundry ;-)


SWA


You may use a 1 1/2" vent for the washer trap but I would increase to 2" for the trap, standpipe and drain. Back in the 50's and 60's we used 1 1/2" for washer drains and had problems. You're installing a long run with minimum fall so you need all the help you can get. I hope there are no 90's in your drain line. Regards, Tom

Thanks for the help guys...

I think I will change to 2"...not much cost difference in the long run.

As to the 90's....unless I wan't to sawcut and jack out 30' of concrete patio, yes there will be one. I'm trying to keep the trenching limited to the lawn area. Is there such a thing as a "long" abs elbow, similiar to a long radius electric sweep? Or is having "any" 90's on this type of installation going to cause problems?

Thanks

SWA

Thanks for the help guys...

I think I will change to 2"...not much cost difference in the long run.

As to the 90's....unless I wan't to sawcut and jack out 30' of concrete patio, yes there will be one. I'm trying to keep the trenching limited to the lawn area. Is there such a thing as a "long" abs elbow, similiar to a long radius electric sweep? Or is having "any" 90's on this type of installation going to cause problems?

thanks

SWA


Rickj was correct when he said there are no solids in a washers discharge,
However you have fibor mixed with grease from the soap that builds up at 90's and presents a blockage. If you can't get away from a elbo in the drain line I strongly suggest that you make it a long sweep drainage ell. Cheers, Tom

Thanks... will do.

SWA