Messages and Online Forum Q&A

Weight Support of I-Beam

From: crcrabtree@centurytel.net
Category: Structural
Remote Name: 209.206.198.221
Date: 21 Jan 2002
Time: 07:00 PM

Comments

MY CONCERN THAT I HAVE IS THAT OF SUFFICIENT WEIGHT SUPPORT OF AN I-BEAM IN A DETACHED THREE-CAR GARAGE(26'x 34'). THE I-BEAM MUST BE 34' IN LENGTH, AND WILL BE CENTERED ON THE 26' WALL. I AM A "DUMMY" IN FIGURING THE LIVE LOAD AND DEAD LOAD ON THE BEAM. I WILL BE USING 2x8 JOISTS, WITH 5/8"SUBFLOORING. A BONUS ROOM OVER THE GARAGE WILL CONSIST OF ROUGHLY 10'x18', WITH 2x4 WALL STUDS. A HIP ROOF DESIGN USING 2x8 RAFTERS WITH A 10-12 PITCH WILL FINISH THE PLANS. I HAVE CONTACTED A LOCAL I-BEAM SUPPLIER, WHO HAS 8", 10", AND 12" I-BEAMS. THE I-BEAM WEIGHT FOR LBS./FT ARE AS FOLLOWS: 8" I-BEAM 18.4LBS/FT = 626LBS(34' LENGTH) 10" I-BEAM 25.4LBS/FT = 864LBS(34' LENGTH) 12" I-BEAM 31.8LBS/FT = 1081LBS(34' LENGTH) (I DON'T KNOW IF YOU NEED THIS TO DETERMINE THE STRENGTH OF THE BEAM). WHICH BEAM DO FEEL WILL BE SUFFICIENT SUPPORT FOR THIS STRUCTURE?

THERE WILL BE NO EXCESSIVE WEIGHT ON THE FLOOR OF THE BONUS ROOM; IT'S INTENDED USE IS ONLY FOR STORAGE OF SMALL ITEMS AND BOXES (NO POOL TABLE!).

ALSO, IN GIVING YOU THE WEIGHT OF THE 3 I-BEAMS, WHICHEVER IS TAKEN INTO CONSIDERATION, WHAT WOULD YOU RECOMMEND TO USE UNDER THE I-BEAM ON EACH END FOR SUPPORT AND HOW SHOULD THE I-BEAMS BE FASTENED TO THE SUPPORTING STRUCTURE IF WOOD IS SUFFICIENT (FOR MINOR EARTHQUAKE PRECAUTIONS)?

THE I-BEAM, ALSO, MUST RUN THE 34' DISTANCE DUE TO THE GARAGE DOOR HEADERS(9' & 16') ON THE FRONTSIDE.

I HOPE THIS GIVES YOU ENOUGH INFO TO HELP ME OUT. THANKS FOR YOUR TIME AND CONSIDERATION. IT WILL BE GREATLY APPRECIATED!

CLAY

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