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How would you retrofit this garage?

IFD

Active member
Joined
Jun 25, 2014
Messages
39
As a long time lurker/reader of this forum I’ve decided to post here to try and generate some ideas on how to *correct* a few issues that I am currently faced with before I tackle my retrofit project.

My garage right now is a 2 car 20’ deep x 17’ wide that’s technically inside my basement (raised bungalow). If you look at the pictures you will notice that the garage door is recessed 5’ under the home, giving me 5’ x 17’ of unused space. I’d like to move my garage door forward 5’ so it’s flush with the house to make the garage 25’ x 17’.

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The challenges:
1. Reverse sloped driveway.
2. Inadequate drainage for flash floods
3. Widening the driveway so that doors can be opened with two cars side by side.


With the current extreme weather that we’ve been getting (especially heavy rain) I am worried that it’s just a matter of time until my drain backs up or when it simply can’t handle the water inflow from the driveway. Because I plan on widening the driveway, this means the drain will have to accept even more water due to the higher surface area draining directly into it.

Currently if you notice the drain is the lowest point of the driveway, if it did back up, there is some safety as it acts as basin in case of overflow. However with my plan to move the door forward I can’t have that as the door will not close flush with the driveway.

I will need to raise the driveway in order to make it level for the door to close flush. My thoughts are to expand the drain from end and to make the safety basin (not sure what to call it) right in front of the newly proposed door closing line, that will provide the extra safety in case the drain backs up.
Something like this, but deeper (to hold more water just in case) and from edge to edge.
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In addition to that I’d like to install some sort of a pump in my current drain that would be activated if the water level started rising. Ideally the way I envision this working is, while I have the driveway pulled up I’d run a conduit with a hose inside or some sort of a water channel that pump will utilize the pump the water back out to the street. Again I don’t know if this is a realistic solution, this is where I need input on what my options are.

With the driveway and garage being on the narrower side at 17’ plus the grass on the sides we have issues opening the doors the closer the cars are parked to the house. I’d like to widen the driveway by 3’ on the left side and about 5’ on the right side.

Lastly, I plan to keep this house for a long time so I’d like to build for the long term even if it costs a little more. I’d like to get ideas on what to use for retaining walls for both sides and what material to use for the driveway. Currently I am leaning towards concrete driveway/retaining walls, possibly stamped, input would be appreciated.

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rsanter

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Dec 22, 2007
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18,492
Location
visalia ca
Replace your driveway
Reslope it so the drain is further from the house and install a channel drain across the driveway
You will have a more aggressive slope once you enter the driveway but it will be better near the garage door
I think the new driveway with you are proposing will not look good with your house. Install the driway the width you have now or a little wider and then install decorative permeable pavers that will match the house along the sides of the driveway. This will break things up a bit and the permeable pavers will allow some of the water to percolate verses going into the drain.
Install a dry well to the side of the driveway or our in the middle of the grass that the channel drain will drain into. Then off the upper part of the drywall run a line back to the outlet drain of the current drain in the driveway. The backup pump can be installed in the drywall in case it gets overwhelmed and you can pump that water into the gutter

Bob
 

Leaflessshadetree

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Aug 1, 2013
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7,145
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Don't ask.
If you widen the driveway to the left as you propose how do you plan on sloping the yard? Looks like you may end up with the neighbors run-off on to your driveway.
Changing the slope of the drive as rsander suggests will make it pretty steep, low vehicles may scrape.
Not sure I'd mess with moving the door.
 

Zeke

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Aug 13, 2009
Messages
17,176
Location
Long Beach CA, the sewer by the sea.
Move the door but not flush with the above wall. Leave at least a one foot setback for the shadow line. You still gain 4 feet. Using different media for the driving and walking surfaces is a great idea. If it does rain a lot use some gravel strips.
 

Hornman

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May 9, 2013
Messages
517
Location
Southwest DFW
The first thing you need to do is get a real drainage grate and replace the drilled steel plate. The second thing is to take your marked up pictures to the Plannig and Zoning folks to see if they will let you do what you are proposing.
 
OP
I

IFD

Active member
Joined
Jun 25, 2014
Messages
39
Replace your driveway
Reslope it so the drain is further from the house and install a channel drain across the driveway
You will have a more aggressive slope once you enter the driveway but it will be better near the garage door
I think the new driveway with you are proposing will not look good with your house. Install the driway the width you have now or a little wider and then install decorative permeable pavers that will match the house along the sides of the driveway. This will break things up a bit and the permeable pavers will allow some of the water to percolate verses going into the drain.
Install a dry well to the side of the driveway or our in the middle of the grass that the channel drain will drain into. Then off the upper part of the drywall run a line back to the outlet drain of the current drain in the driveway. The backup pump can be installed in the drywall in case it gets overwhelmed and you can pump that water into the gutter

Bob


This is exactly the type of advice I am looking for.

Can you elaborate more on the dry well solutions, I am not too familiar with that?

Also, in terms of widening the driveway, why don't you think it will work with the house? it's all a work in progress as is, cutting the grass on the end parts is a pain. I was hoping to make the retaining wall flush to where the ground is level, would make cutting the grass much easier and give me the much needed space.
 
OP
I

IFD

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Jun 25, 2014
Messages
39
If you widen the driveway to the left as you propose how do you plan on sloping the yard? Looks like you may end up with the neighbors run-off on to your driveway.
Changing the slope of the drive as rsander suggests will make it pretty steep, low vehicles may scrape.
Not sure I'd mess with moving the door.

Not sure how putting the channel drains will change the slope of the driveway. Keep in mind the steepest part of the driveway is at the bottom where the drain is, it's like a basin. I want to raise the entire drain so that everything is level so the door can close flush with the driveway. Right now, if I was to move the door forward there would be 3-6 inches of space between door and driveway in the middle because of how aggressive the slope into the drain is.

As far as widening the driveway, I don't plan on sloping the yard, which is the beauty of it. The retaining wall will hold it at level where it should be on both side, no more hilly parts that I need to cut which are a pita.
 
OP
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IFD

Active member
Joined
Jun 25, 2014
Messages
39
Move the door but not flush with the above wall. Leave at least a one foot setback for the shadow line. You still gain 4 feet. Using different media for the driving and walking surfaces is a great idea. If it does rain a lot use some gravel strips.

I don't plan to move it flush, it will be recessed the standard 6-8 inches back.
 

yeldogt

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Jan 2, 2012
Messages
18,184
The channel drains do work -- I have two of them across part of my driveway ... they must be installed correctly and are not inexpensive in a driveway because of the weight requirements. By installing multiple drains across the drive you minimize the water that could possibly flow over and past a single drain. Each drain removes a section of the driveway -- each with its own pipe to lower safe open ground.

You would need to reconstruct what you have currently far enough out to be past the new door -- a raised lip and another gutter drain would protect the garage opening.

Where does the current water drain to? Needing a pump is dangerous -- and for a flash flood you need a big one.

Some areas also have codes on how steep a driveway can be
 
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OP
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IFD

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Joined
Jun 25, 2014
Messages
39
Just to update this thread, I finished the project. Didn't widen the driveway because it wouldn't be square to the garage door and optically it's not something i would be happy with.

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dbabicky

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Dec 30, 2012
Messages
874
Location
NE Wisconsin
So, did you move the garage door out further. I couldn't tell from the pics. Everything else looks absolutely beautiful. Very nice upgrade !!
 

BADSIX

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Joined
Nov 30, 2010
Messages
895
Location
oregon coast
Sure would have looked cool if you would have went with the wider drive and retaining walls, but looks dam nice as is .
Jay D.
 
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