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Re: Fixed base timber column

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A 10x10 is 9.5" x 9.5".  Cast a TS 10 x 10 x 1/4 in the foundation, flush with
the highest top of concrete elevationt that you desire.  This will provide 9.5"
clear.  Stick the 10 x 10 in the TS.

Bart Needham, SE

Thomas Long wrote:

> I am designing a free standing trellis.  The footprint is about 100ft x
> 20ft.  The owner wants to use 10x10 timber columns, 10x12 beams with 4x8
> lattice at 36" o/c.  The columns are founded on 18" diameter caissons.  The
> timber columns are spaced at 14'-0".
>
> The owner would not like to see the typical knee braces to support the
> timber frame from lateral movement, and no exposed connections.  I have been
> tossing ideas around in my head about how to approach this fixed base timber
> column condition.
>
> The ideas I have come up with are:
>
> 1. Use a vertical steel plate in the center of the column and bolt through
> and plug the holes.  I do not feel to good about this.
> 2. Embed threaded rods into the concrete either when they pour the caissons
> or then drill into the column and install with epoxy adhesive.  Not a bad
> solution, but how do I design it.
> 3. Embed a 2" +- pipe column into the concrete and drill the column and then
> bolt through and plug.  Hard to drill into the timber and to construct.
>
> Has any body designed a structure like this and if there is, how did you do
> it, what is the best solution.
>
> Thank you in advance.
>
> Thomas Long
> Thomas Long Engineering
>