Home>Discussions>YARD & GARDEN>Decks, Patios, & Porches>Rebuilding wrap around porch; roof tie-down building codes
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Brad
Rebuilding wrap around porch; roof tie-down building codes
Brad

Project: wrap around porch on 1890 Victorian house, reusing as much original as possible

Finished: piers, joists, flooring are in place.
Deteriorated columns refurbished.
Roof remained in place.

Next: Reinsert columns under roof.
The columns are 8 inches wide and decoratively turned, so not easily replicated.

Problem: How to comply with new building codes requiring tie-down to prevent uplift using the existing columns and roof.

Building inspector wants the roof tied into the foundation.
That's a simple task in new construction, but I can't see how to do it without a split column or rebuilding the roof.

Corrolary: The base of each column is an 8" x 8" x 8" solid block.
I'm supposed to tie that to the foundation, then tie the roof to the block through the hollow column.

For the first column, I built the new block from 2"x10"s and inserted 2 metal straps inside the block. The straps extended 6" below the block and are screwed to the joists. But I can't imagine that is the expected/best practice.

Then I tied everything together with a chain hooked at the top and bottom through the cetner of the hollow column. But I have to hook the chain before installing the column. The best I could do was 3 ft of slack. I don't imagine that going to accomplish the purpose.

I can't imagine that I'm the first person to replace a column on an existing porch, but I can't find any hints about how to manage this. Everything I find assumes new construction, like a threaded rod with a nut and washer on top.

For one, if I had the rod attached at the bottom, it would be severely bent by the time I got the column stood up.

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Brad
Re: Rebuilding wrap around porch; roof tie-down building codes
Brad

Here is the chain attached to the block, going up through the column. 

Attachment: 
Brad
Re: Rebuilding wrap around porch; roof tie-down building codes
Brad

Columns after initial removal.

Attachment: 
Brad
Re: Rebuilding wrap around porch; roof tie-down building codes
Brad

Framing after rebuilding foundation. 

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