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How to raise a shed?

Posted on 2/19/24 at 11:07 am
Posted by tadman
Member since Jun 2020
3927 posts
Posted on 2/19/24 at 11:07 am
I have a shed similar to the one in the pic. I think I want to add a second floor so I can store tools and lawnmowers on the ground floor and have a home office upstairs.

I have access to jacks, but the question is should I pre-build the four new walls, jack up the shed at the bottom, and slip the new walls under? Or should I cut under the roof and jack up the roof, then add the walls in between the roof and the old walls?

Posted by finchmeister08
Member since Mar 2011
35958 posts
Posted on 2/19/24 at 11:12 am to
how big of an office do you need? you could just add on a lean-to to the sides and enclose it. or add on to one of the endwalls (extend the shed).
Posted by Honest Tune
Louisiana
Member since Dec 2011
16022 posts
Posted on 2/19/24 at 11:30 am to
Both of your ideas are pretty bad, tbh. No offense…

Just open a wall, pour some concrete and frame a new space.

Question: does your shed have two double doors like the one in the picture? If so… do you NEED two?
This post was edited on 2/19/24 at 11:34 am
Posted by gumbo2176
Member since May 2018
15450 posts
Posted on 2/19/24 at 11:40 am to
I think you've oversimplified this project.

How wide is the shed? What size ceiling joists does it now have? How much load per sq. ft. will be in the 2nd floor when finished? Are the inside walls covered or just open studs?

The width of the shed will determine what size lumber has to be used to separate the 2 floors and that is anywhere from 2 x 6 to 2 x 12's depending on the span and the load you plan on putting in the 2nd floor area.

You need to check local building codes to get a better idea what you're facing in materials alone.
Posted by CBLSU316
Far Right of Left
Member since Jun 2008
11392 posts
Posted on 2/19/24 at 11:41 am to
I wouldnt do either of those.....but.......

quote:

should I pre-build the four new walls, jack up the shed at the bottom, and slip the new walls under


If you do this, please document here via photos.
Posted by DownSouthDave
Beau, Bro, Baw
Member since Jan 2013
7402 posts
Posted on 2/19/24 at 11:51 am to
I'd dig a basement out beneath before trying to raise it.
Posted by CobraCommander83
Member since Feb 2017
11601 posts
Posted on 2/19/24 at 11:53 am to
Posted by SeasonOfSam
SELA
Member since Dec 2014
500 posts
Posted on 2/19/24 at 11:57 am to
quote:

I think you've oversimplified this project.

How wide is the shed? What size ceiling joists does it now have? How much load per sq. ft. will be in the 2nd floor when finished? Are the inside walls covered or just open studs?

The width of the shed will determine what size lumber has to be used to separate the 2 floors and that is anywhere from 2 x 6 to 2 x 12's depending on the span and the load you plan on putting in the 2nd floor area.

You need to check local building codes to get a better idea what you're facing in materials alone.


Everything Gumbo2176 said....

This is not the "OT Lounge", so don't take this as me being a smart-a$$. BUT if you are asking your question and have not considered any of the points Gumbo2176 mentioned, then I cannot recommend highly enough that you not try this.
Posted by TigerDeacon
West Monroe, LA
Member since Sep 2003
29409 posts
Posted on 2/19/24 at 12:01 pm to
quote:

I think I want to add a second floor so I can store tools and lawnmowers on the ground floor and have a home office


Where would you put the stairs? If inside, you are going to lose a lot of space in the bottom floor. Also, how would you handle heating and cooling the office?
Posted by tadman
Member since Jun 2020
3927 posts
Posted on 2/19/24 at 12:24 pm to
The stairs would go out back so as not to take space from the inside. You are correct that the footprint on the ground floor and hole in the upstairs would be perhaps 30pct of the either area.
Posted by KemoSabe65
70605
Member since Mar 2018
5283 posts
Posted on 2/19/24 at 12:29 pm to
You need to hire a mechanical engineer
Posted by gumbo2176
Member since May 2018
15450 posts
Posted on 2/19/24 at 12:29 pm to
quote:

Where would you put the stairs? If inside, you are going to lose a lot of space in the bottom floor. Also, how would you handle heating and cooling the office?




Yeah, a lot to consider, then add the probability of need for more electricity that is likely not in that area now in a sufficient amount to do what the OP wants. A 2nd floor, lights, outlets, AC & heat.......


All I'm seeing is "CA-CHING, CA-CHING" with the costs adding up.
Posted by cgrand
HAMMOND
Member since Oct 2009
39237 posts
Posted on 2/19/24 at 2:58 pm to
just build another shed
Posted by Chad504boy
4 posts
Member since Feb 2005
167136 posts
Posted on 2/19/24 at 3:18 pm to
quote:

just build another shed


turn this one into an outdoor shower model.
Posted by tadman
Member since Jun 2020
3927 posts
Posted on 2/19/24 at 6:01 pm to
quote:

You need to hire a mechanical engineer


Baw that would be a structural engineer and I work with them every day. Mechanical would do stuff like gearboxes and motors.

Assuming that our structural is adequate (it is) I'm just looking for the easiest operation sequence.
Posted by tadman
Member since Jun 2020
3927 posts
Posted on 2/19/24 at 6:04 pm to
quote:

Yeah, a lot to consider, then add the probability of need for more electricity that is likely not in that area now in a sufficient amount to do what the OP wants. A 2nd floor, lights, outlets, AC & heat.......


We already have dedicated power to the shed with a panel and breakers. The upstairs might need enough to power 1-2 lights, a laptop and printer, a window unit AC. That's maybe 110-130a total. Downstairs will not have air, just the solitary light bulb it already has and a charging station for the drill batteries.
Posted by Capt ST
Hotel California
Member since Aug 2011
12930 posts
Posted on 2/19/24 at 6:10 pm to
Good thing nobody has had to raise their houses 8’-10’ in the last 8 years. Or up to 18’ on grand isle. Optimal? No, but can be done.
Posted by gumbo2176
Member since May 2018
15450 posts
Posted on 2/19/24 at 6:43 pm to
quote:

Good thing nobody has had to raise their houses 8’-10’ in the last 8 years. Or up to 18’ on grand isle. Optimal? No, but can be done.




Yes it can, and for jobs that big, usually a company with tons of cribbing, dimensional steel beams and a multiple manifold hydraulic jacking system to evenly raise the structures.

Not some guy with a handful of house jacks and a vague idea how to do it.
Posted by Outdoorreb
Member since Oct 2019
2582 posts
Posted on 2/19/24 at 8:56 pm to
quote:

just build another shed


This.
It will look better and sale better than raising it.
Or just build around it, but I wouldn’t do that personally.
Posted by StrikeIndicator
inside the capital city loop.
Member since May 2019
482 posts
Posted on 2/20/24 at 7:25 am to
Damn, I thought this was about moving a shed ( DIY style). Carry on
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