Does bolting an angle to a C channel form a built up section
Does bolting an angle to a C channel form a built up section
(OP)
How an angle bolted staggered each 3' back to back to a C channel will act..
Knowing that
=============
the C Chacnnel is historic 1932 12"x25#
The Angle is a new angle that could be 6" x 4" x 3/8"
The C channel is simply supported with a span of 35'
The C Channel is lateraly unbrace except at the ends
The bottom of the C Channel is lateraly braced
The level of the bottom angle leg is only 3/8" higher than the level of the bottom flange of the C CHannel
Questions:
==========
How bolting the angle will affect the unbraced length of the C Channel?
Does both of them ( C & L ) will act as one unit (built up sec.) for resisting the moment, or what ?
Should i put stiffeners for the C channel to brace the torsional buckling, and what about the lateral buckling of the top compression Flange
Thanks in advance
Knowing that
=============
the C Chacnnel is historic 1932 12"x25#
The Angle is a new angle that could be 6" x 4" x 3/8"
The C channel is simply supported with a span of 35'
The C Channel is lateraly unbrace except at the ends
The bottom of the C Channel is lateraly braced
The level of the bottom angle leg is only 3/8" higher than the level of the bottom flange of the C CHannel
Questions:
==========
How bolting the angle will affect the unbraced length of the C Channel?
Does both of them ( C & L ) will act as one unit (built up sec.) for resisting the moment, or what ?
Should i put stiffeners for the C channel to brace the torsional buckling, and what about the lateral buckling of the top compression Flange
Thanks in advance






RE: Does bolting an angle to a C channel form a built up section
It doesn't affect the unbraced length. It may affect how resistant the combined shape is to lateral torsional buckling. If you don't understand these concepts, you should find a structural engineer who does.
RE: Does bolting an angle to a C channel form a built up section
Bolting on the angle will possibly affect how the channel acts under its normal loading 2 questions
1/ what is the loading?
2/ why have you bolted the angle on?
regards
desertfox
RE: Does bolting an angle to a C channel form a built up section
The bolting will cause the two to act together if the horizontal shear can be taken through the bolting arrangement, but for that you may well need HSFG bolts.
Stephen Argles
Land & Marine
www.landandmarine.com
RE: Does bolting an angle to a C channel form a built up section
A C12x25 with an unbraced length of 35 feet won't carry much force before it buckles, unless it is stiffening a large rectangular duct for internal pressure. Is this a duct stiffener?
RE: Does bolting an angle to a C channel form a built up section
RE: Does bolting an angle to a C channel form a built up section
I thought adding transverse stiffener to the C channel (from one side only )will increase the resistance to tensional buckling
RE: Does bolting an angle to a C channel form a built up section
RE: Does bolting an angle to a C channel form a built up section