W8 x 28 structural beam for girder, need to pack out with 2x..
W8 x 28 structural beam for girder, need to pack out with 2x..
(OP)
I am wondering what size bolts and at what pattern are needed. Because of height restrictions I can't use top hung joist hangers so that is why I need to pack out the web.
Thanks
Thanks






RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
DBennett
Lone Star Engineering, PC
www.lonestarengineeringpc.com
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
I did it many times in my bob-the-builder days.
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
As far as checking the wood "pack out" itself, that is not my area of expertise (if I even have one)
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
Does anyone have any insight on this? Or is a steel permanent post really the best option?
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
Other than that, a 3.5" standard pipe column would be normal to use, depending on the unsupported lengths of the columns.
As for "packing" the W8, I thought that Simpson made weldable top flange hangers so that this was not necessary. Hate to weld in the field, but...
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
I would also provide a 1/2" gap between the top of the steel beam and the underside of any diaphragm sheathing, if that is possible, otherwise shrinkage will cause the wide flange to be read on the surface of the diaphragm.
Finally, the infill here should be done with a 4X8 ripped to size, not a 4X6. It should be a tight fit in order to engage the bottom flange in bearing. The vertically slotted holes will keep it that way.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
You can always check the allowable bearing using .3E/(l/d)^2.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
the load I calculated to be 29000 lb
not sure on grade I think you mean wood and that would just be douglas fir or pine....
If anyone can point me in the right direction for this I would greatly appreciate it.
Thanks again everyone!
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
Basically, calculate the allowable bearing stress in psi on the column using the formula I gave you, and multiply that figure by the area of the column to get the capacity.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
I am wondering why you are undertaking this project when you do not know how to size a wood column. You seem to be asking us to size your wood column for you. That is not what we do on this forum.
Assuming you are correct in your calculation of 29,000#, it is a substantial load, much more than the capacity of an ordinary telepost of about 8,000#. It seems to me that you should be engaging the services of a structural engineer because you clearly do not know what you are doing.
BA
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
RE: W8 x 28 structural beam for girder, need to pack out with 2x..
I am glad that you stepped up on this thread. I was going to suggest that the original poster check the Column Stability Factor. A column with 29 kips load and an unsuported length of 19.5' is not something to be fussing around with with a 4x6 or 4x8 column.
Good suggestion about getting a real structural engineer involved.