Re: building storage loft

Posted by Billy NY on March 19, 2014 at 08:35:35 from (66.67.105.23):

In Reply to: Re: building storage loft posted by redblood on March 19, 2014 at 06:22:00:

Excellent! I've often worked using pencil sketches, graph paper tablet, straight edge, lead holder with thick lead, and soft eraser, to create details that needed to be sent to a designer, a change in the field or what have you, as well as marking up a partial plan or section detail. Now I'm a bit dated, don't know C.A.D., but assume there's a lot out there software wise that one can use just as effectively to get a rough draft sketch, or like me using the previous, both are effective and when you ask a question like this here, it will be very effective to illustrate to all who respond what you are doing, neat or not, picture is a thousand words !!!! LOL!

So to clarify, your framing plan consists of a deck, supported on 3 sides, with a ledger on the 2 ends. In plan view, you show the framing members over lapping a center beam underneath, that is supported by 1 post correct ?

What supports the center beam at the wall, opposite the set back post, so both ends of the beam are bearing on something or connected to something that bears and transfers the load ? Anyway, maybe I've missed something, but there has to be something there, post and a connection to the existing framing of the building for that center beam to carry the joists perpendicular to it at the center where the joists overlap.

It's the only detail that confuses me after looking at this, is that the far or end floor joist, next to the existing wall, does it bear on a ledger, then is there another ledger, below that, 9 1/2" (width of a 2x10) and is this what that end of the center beam bears on ?

I think I can see what you plan to do, minus the center support.

So the important details here are the connections, fastener types, and the loading imposed, onto the deck and transferred to the ledgers, center post and where ever else if I have missed something. Also the framing members, (spruce, pine or fir) or S.P.F. size, spacing, and will they be stiffened, (between the joists) besides the decking?

You will want to make sure the shear loads on the ledgers, including fasteners check out, whatever is carrying a load, transferring a load etc.

Realize that many screws commonly available are not rated for any shear load. Also realize that lag bolts, I have seen them made of what appeared to be pot metal, with shiny finish, best to make sure those are galvanized steel, have an astm designation, or are rated for shear loads that will be imposed. Fastening and connections do have to meet certain criteria. Next is, figure all the weight that will be placed on this deck, does it match, exceed or is it less than what all these details together support ? And how do you know this ? Also does the existing framing and what you add to it have any impact, meaning its been checked, does anything there have to be beefed up, is there any conflict, or is it fine as is, and how do you know that. Its relative to safety.

Take a rough plan like above, refine it into something neat, show all pertinent details, dimensions etc. take some photos of existing conditions, then take it to or get someone qualified to look it over. In a few hours, and what would amount to coffee money, you will have your answer(s), any necessary changes, pertinent questions answered and know it all works, its a very simple elevated storage loft with a few key components and details to check to insure its safety when built and put into use.

Put it this way, if this was an addition to an occupied space in a home, most municipalities would not grant a permit unless you had a P.E. stamped plan submitted, being a barn relieves you of that requirement, but could also leave something unknown because of it, hence my suggestions to have the plan checked out, which some may disagree with, you're over thinking, its over kill etc. but for as simple as it is, for the cost of a few hours, if that of a P.E. its peace of mind.

I used to work with Rice Engineering out of Wausau, Wisconsin, for all kinds of things, small and large, I know one thing, if I faxed them a plan and detail like this relative to a job I was doing, (in those days-mostly commercial work), it would be turned around in 1 day and the bill would have been fair, covering the few hours it took to check it out by whomever did the work.

Additionally, I am not a licensed P.E. and am not qualified to advise on any actual structural design that will result from suggestions or advice stated here. It is highly advisable to seek the advice of a licensed professional, prior to constructing any of the above. LOL ! kind of a John T disclaimer, if you have seen his posts, always very helpful, but ends with a disclaimer.

In summary, just trying to helpful and promote safety, that's all LOL !!!!

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