Re: Concrete on barn floor

Posted by Billy NY on July 12, 2014 at 20:00:12 from (66.67.105.23):

In Reply to: Concrete on barn floor posted by Bruce from Can. on July 12, 2014 at 16:51:51:

Typically, you need to detail the as-built conditions and I would want a site visit by a qualified engineer to inspect the structure as is prior to any further steps being taken.

I'm having trouble understanding what you want to do. Do you want to install a concrete slab/floor over an existing wood framed. elevated floor with its associated framework/structural members supporting the new floor and the live loads of tractors or similar imposed on it ?

As built conditions need to be investigated and being wood, it needs to be verified that all critical members are intact, knowing wood can decay, crack, be compromised by insects and or the overall condition, of how many years, cycles of previous loads. All of it needs some analysis, and at some point it can be determined that what you have will support the weight you want to place on it, both the concrete and the live loads imposed, point loading etc.

Knowing of a dozen barns like this means nothing, its your barn that counts, those barns don't support your loads, I'd isolate my thoughts of what others have done and focus on what you want to do with yours.

I've been on the construction side of this for many years and there is no way I'd even consider attempting to build what you suggest without having an engineer design it first, then review that for constructability, utilizing a plan to erect, support, shore, the decking for the purpose of placing the slab.

Its a structural element, with a lot of unknowns, there is just no logic in arbitrarily basing any rationale that well it works and you so called experts are wrong, we have done it here, there and the other place. That don't mean squat, to me anyways, someone who constructs buildings, I want as built conditions verified, I want the structural components analyzed by a qualified professional, I want to KNOW without question that the design works because the calculations prove that it does, based on the as-built conditions, and that it can be built, some designs are great but are not friendly to a builder at all.

Sure, I've heard well I don't need no engineer to tell me this or that, I know what works, I'll build it, and there are several others built like it, all it takes is one failure, one anomaly unique to yours, one oversight, one hidden problem or something unforseen, unchecked, and someone may get killed, + all the work you paid to have done is lost and then some. That is destroyed and how many other things similar could go wrong if it fails.

With anything structural of the scope of what you are considering, its foolish to proceed without any care to the above, there needs to be some redundancy and some additional safety factor built in, it takes an engineer to analyze, run some checks, and perform some calculations.

I just don't believe this is sound practice, you or someone else's life could be put at risk if it fails.

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