Hi all,
I need to build a home for my dump trailer in southern New Hampshire. It weighs 1,400#. I am planning a 12×16 shed. I am thinking floor framing as if I were building a deck, with 2×10 or 2×12 PT, 16″ OC, with hangers, blocking, supported by concrete blocks at the corners and in the center of the Cape style shed. The 9×7 R9 garage door will probably be on the gable end. I had planned Advantech floors. I will apply stain to the bottom side to provide a moisture barrier. Will one layer of the OSB be adequate to support the load? Any thoughts on the project would be welcome. Thanks.
Replies
Where the wheels go and sit along with maybe the tongue is the point load.
Will you have to drive onto the floor before unhitching the trailer?
You don’t mention the direction of joists, nor any beam?
Will you ever park it in there with a load?
Good morning, and Happy Thanksgiving. Yes, I will have to drive into the shed before Unhitching. No, the trailer will be unloaded while it is in there. I am not currently planning a beam, but that is why I have asked for advice. I had figured the joists would run front to back, and the garage door is on the gable side. Is this the right direction?
I suspect you might be better off just starting with a load of gravel, rock, or stone, level and set the shed on it.
You likely will want to maintain a treated sill across the bottom of the door opening to keep the sides of the rolling door parallel.
It sounds like you plan to rest this on ground level. (and not have a foundation under)
This spacing, and the application, does not seem suitable for an exposure 1 subfloor material.
Treated plywood might be a better choice.
Rather than point support on a few CMUs spaced, It likely will be more cost-effective to plan the floor to be supported on sleepers. (a stone or gravel bed will make this easier) Doing so would reduce the span needed by floor joists, and the needed dimensions. 2x6 would likely be fine. Masonry units could replace the sleepers, but more would be needed.
One way would be to make the floor framing have the joists run as you suggest. (across the 12 foot dimension.)
Sleepers (2x6) run the long dimension as the first layer. Place under front and back wall location. If you also place sleepers at 4 and 8 feet, you could use 8 footers and alternate the joint. (this will likely be quite a bit less expensive than rated treated framing capable of spanning the 12 foot length)
Another set of sleepers at the nominal wheel location would provide a direct path for support. This would also be an ideal location for blocking. Additional blocking can be installed to expand support under the nominal wheel location.
Access to back the trailer in will mean you need a driveway with elevation matched to the final floor height.
Thank you, some great things to consider, appreciate your feedback! Unfortunately since this will be built in my back yard, it will not be accessible by my driveway. I will have to build a ramp.