Shed Help Needed

[kwolfe]

I am planning on building the long awaited shed. I plan to use it to house my GT235, snowblower, tiller, push mowever and other yard stuff. I would like to make it 16' x 16' with a 9/12 pitch roof. I choose the size based upon what I think I need as well as precut wood dimensions. I plan on making the floor from 2x6 pressure treated (16" OC) set concrete blacks and gravel.

I was just at Lowes and 3/4" pressure treated plywood is $36 a sheet. Is it necessary to use that, or would regular tongue and grove due ($15 sheet). I could always coat it with a outdoor latex paint.

My biggest question is regarding the roof trusses. I would like them to overhang about 1 foot of the sides. What is the best/easiest way to put these together (using gussets, bird toed, etc.)?? Also, what size board would I use to span 16'??

 

[gotrocks]

I'm not a truss engineer but around this neck of the woods they would be using 2x4s.
Check out this site for more info.
http://www.alpeng.com/upload/19268/RoofSpan.pdf
Here is a rough scale drawing of just one 9/12 pitch design that I interpret you expect.

 

[kwolfe]

Thanks for the drawing. I should have said an 8/12 pitch.

I guess the main question here is: Can I simply use a larger cross beam instead of all the cross bracing. I was hoping to use the some loft space for storage.

 

[kwolfe]

Here is what I was think of.

 

[hazmat]

If you want a loft, build it with "rafters" not a "truss". Your local building code should tell you min size for wind/snow loads. The center support does nothing unless you have a load bearing wall beneath it.

 

[hazmat]

This book taunton roofs or similar will help with the particulars of the overhang etc.

 

[ToadHill]

Don't tell my wife I'm writing this, but if you think you need 16 x 16, build it 24 x 24. You won't believe how fast you will fill it up.

 

[bearhawk]

I was just at Lowes and 3/4" pressure treated plywood is $36 a sheet. Is it necessary to use that, or would regular tongue and grove due ($15 sheet). I could always coat it with a outdoor latex paint.

My biggest question is regarding the roof trusses. I would like them to overhang about 1 foot of the sides. What is the best/easiest way to put these together (using gussets, bird toed, etc.)?? Also, what size board would I use to span 16'??

You should use pressure treated lumber for the floor joist, but regular tongue and groove flooring would be fine.

When I did my barn I went to the local (real) lumberyard and ordered trusses. They had a guy there that (with the computer) was able to calculate all the loads and specs. He was familiar with the local code and snow loads. I believe that the truss was as cheap as I could have bought the material alone for.

My Barn is 24 x 36 with an 18 x 36 second floor.

Cheers

 

[arthr31]

Don't tell my wife I'm writing this, but if you think you need 16 x 16, build it 24 x 24. You won't believe how fast you will fill it up.

No kidding. That's what I learned from having built a 12X16 shed just 3 yrs ago. Was in there tonight and can hardly get around some of the stuff. And, not junk, stuff that is stored, in transit, etc. Build bigger if you can afford !!

 

[x585guy]

Hey bearhawk, very nice barn. Has the project been completed yet? If you don't I was curious what you paid for the barn? What are your plans for the second floor? I am looking sometime in the future to build a garage/ workshop about the same size in dimensions. I to live up here in nh and in need of another garage. I have a 24 x 28 garage already but the two trucks and some lawn and snowthrowing euip. pretty much takes up all that space. I have a 12 x 16 shed in the back and have my tractor and loader in there but I think I am pushing the design limits of the floor just alittle. Any way, very nice looking barn. Your town is going to love increasing your property tax. LOL. Russ

 

[bearhawk]

Hey bearhawk, very nice barn. Has the project been completed yet? If you don't I was curious what you paid for the barn? What are your plans for the second floor? I am looking sometime in the future to build a garage/ workshop about the same size in dimensions. I to live up here in nh and in need of another garage. I have a 24 x 28 garage already but the two trucks and some lawn and snowthrowing euip. pretty much takes up all that space. I have a 12 x 16 shed in the back and have my tractor and loader in there but I think I am pushing the design limits of the floor just alittle. Any way, very nice looking barn. Your town is going to love increasing your property tax. LOL. Russ

It's mostly done, I haven't finished the wiring yet.

I built it with the help of my BIL, or my BIL actually built it and I slowed him down a little.

Costs in big round numbers in 05

Floating Slab 4000
Rough Cut Hemlock Framing 3000
Ship Lap Pine Siding 3000
Roof Trusses 3600

It gets a little fuzzy after that, Sheathing, Roofing, Second Floor T&G, Custom VMatch Doors, maybe 5 weeks of BIL time

Second floor is some Hay storage and just regular storage.

If you are in NH you already know what the Property Taxes did.

Here it is without the doors. right side is two 12 x 12 stalls, Center Drive through Isle, and 12 x 24 workshop to the left.

 

[kwolfe]

So how would you all go about spanning 16 feet? Should I prebuild trusses using 2x8x16 for the celing joist and 2x6x12 for the rafters? I could joint them together with gussets in order to make the cutting easier (no birds mouth). Or should I place the cross support up higher and use a shorter board? I I would like to do this in the middle of the shed and have the storage at either end.

 

[RonMar]

You are going to need the angled cross bracing in the roof truss areas if you use 2X4's. If I recall maximum unsupported span for a 2X4 is about 6'-7' depending on the application. You are going to have 7/16 or 1/2 sheething, roofing felt and shingles up on top I assume. That is a lot of weight and a long span unsupported 2X4 will sag under the weight, not to mention any additional load from snow/ice if you get such. To go unsupported over the span from wall to peak on a 16' shed, you will need 2X6's.

Also as mentioned, that center vertical does nothing unless it is to a load bearing cross beam or wall beneath it. They are not used in typical roof trusses as they would just transfer a bend force to the joice. The strength comes from the 2 rafters meeting at the peak of the roof like the peak of a large triangle. Downward weight forces them to spread at the bottom and the cross joices(in tension) hold the bottom ends and the top of the walls together. Angled braces between joices and rafters transfer the load to the joice more as a compression and tension load and do not apply as much bending force to the joices.

Here is a table for maximum spans based on lumber specs and spacing for various load rateings.

http://www.msrlumber.org/spantables.pdf The dimensions are given in FT-IN.

 

[ldabe]

Great barn!

If you don't mind...how much $$$???

 

[bearhawk]

Great barn!

If you don't mind...how much $$$???

I think it was about 20k all in.

 

[kwolfe]

Ok here is my revised drawing. I would us 2x6x12s as the rafters and 2x4x8 as the collar ties. For the ridge board, I guess I would use a 2x8x16. The roof pitch pitcured is a 35 degree slope. Keeping the rafters at 12' long would give me about 1.5' overhang which sounds good.

As for storage, I could always add ceiling joists later or try another design.

I am trying to build this thing using precut lumber dimensions in order to reduce cutting and waste.

 

[scott_vt]

I think it was about 20k all in.

Mornin Jim,
Very nicely done !!! Thanks for posting all the great pics. You even got the color right !

 

[techman]

I built this 16' x 20' in '02 and cost me a little over a grand. Wood has skyrocketed since then (Iraq and the housing boom). Most of the base was there (from my old, smaller shed). The base is 6" x 6" perimeter with cross members at 8'. As you can see it has a gambrel roof. The roof is 1/2" OSB. For the base I filler inside the 6"x"6's with gravel and covered them with OSB. Each door is a 4x8 sheet T1-11 with a 2x4 perimeter frame. These were sized to accommodate the BX-22 without having to fold the ROPS. The roof dimensions were sized for 4' and 8' dimensions to use full sheets (no sense wasting wood).

It has stood the seasons w/o any problems.

paul

 

[kwolfe]

Thanks Paul. Looks like you used the same lumber dimensions that I am thinking about. Makes me feel better. Good looking shed too!. Now all I have to do is get started.

 

[techman]

Thanks Paul. Looks like you used the same lumber dimensions that I am thinking about. Makes me feel better. Good looking shed too!. Now all I have to do is get started.

PM me your email and I can send you my material list. It has 2002 prices but still a good reference. A few items are missing, like some sheets of OSB which I had already.

paul