Posted by: must be crazy ® 04/01/2007, 15:07:07 Author Profile eMail author Edit

I hope someone here can help me. I am about to sister (2) 3/8" thick x 10" tall x 16' long steel plates to (3)2x10's. What would be a good screw pattern to attach the steel my main beam (the 3 - 2x10's)? staggered or columns? I was not planning on screwing all the way through to the other side..or should I ?

Replies to this message

Re: screw pattern
Re: screw pattern -- must be crazy	Post Reply	Top of thread	Forum

Posted by: jboggs ® 04/02/2007, 18:52:28 Author Profile eMail author Edit

I'm just guessing here, but it sounds like you are trying to do something my brother-in-law tried - getting rid of a bothersome column in your basement. Right? Just make the existing beam stiffer, right? My advice as a registered professional mechanical engineer who knows a little about stress analysis and deflection? Don't even attempt it unless you (1)-have a structural engineer examine the situation, (2)-are willing to live with the unavoidable dip in the floor above, and (3)-are willing to absorb the probable expense of repairing the damage, either now or when you try to sell the house.

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

Re: screw pattern
Re: screw pattern -- must be crazy	Post Reply	Top of thread	Forum

Posted by: Kelly Bramble ® 04/01/2007, 21:12:23 Author Profile eMail author Edit

How about a picture of your application, I'm having problems seeing your description in my minds eye.

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

| |

Re: Re: screw pattern
Re: Re: screw pattern -- Kelly Bramble	Post Reply	Top of thread	Forum

Posted by: must be crazy ® 04/01/2007, 23:46:43 Author Profile eMail author Edit

basically, sandwiching (3) 2"x10" with a 3/8"x10" on each side for a distance of 16 feet. what should my screwing pattern look like? staggered (W - shape) or column (I - shape) & how about the spacing between the screws?? Application= in my basement to support a span of 14' without the need for a floor jack (loly column) in the middle..

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread