Steel Frame-Infill CMU vs Load Brg CMU
Steel Frame-Infill CMU vs Load Brg CMU
(OP)
Can anyone tell me their opinion, experiences using a steel frame with infill CMU vs load bearing CMU? I'm thinking there is a decrease in time of construction because you can dry the building in earlier but not a material savings. What are everyone's design thoughts on this and how do most contractors feel about the comparison?
For infill CMU I'm think of tucking 8x8 columns flush in a wall to avoid bump outs and connecting the beam above to the CMU bond beam below with a series of clip angles with slotted holes (vertical) and epoxy bolts. The design intent is to allow the beam to deflect but transfer later loads into the CMU.
##### -Steel Beam Above
#
#
#
#####
^^^^ - Angle Clip attached to CMU Bond Beam
***** ^
* @ * ^
*****
*****
* @ * - Infill CMU wall beneath Steel Beam
*****
*****
* @ *
*****
For infill CMU I'm think of tucking 8x8 columns flush in a wall to avoid bump outs and connecting the beam above to the CMU bond beam below with a series of clip angles with slotted holes (vertical) and epoxy bolts. The design intent is to allow the beam to deflect but transfer later loads into the CMU.
##### -Steel Beam Above
#
#
#
#####
^^^^ - Angle Clip attached to CMU Bond Beam
***** ^
* @ * ^
*****
*****
* @ * - Infill CMU wall beneath Steel Beam
*****
*****
* @ *
*****






RE: Steel Frame-Infill CMU vs Load Brg CMU
Is the cmu needed for some rating or separation?
Second question
What is the floor construction?
I would tend to stay away from two trades unless needed for some certain reason.
RE: Steel Frame-Infill CMU vs Load Brg CMU
RE: Steel Frame-Infill CMU vs Load Brg CMU
When things are steep, remember to stay level-headed.
-Horace
RE: Steel Frame-Infill CMU vs Load Brg CMU
Does your infill typically align with the columns or do they bump out into the occupied space?
STR04
RE: Steel Frame-Infill CMU vs Load Brg CMU
I think I remember doing one small building where I used HSS columns that fit completely within the cmu wall. I just noticed you are thinking the same thing with 8x8 columns, 7x7 or less may fit a little better unless you are using >8" cmu thickness.
When things are steep, remember to stay level-headed.
-Horace