Effective Masonry Wall Thickness
Effective Masonry Wall Thickness
(OP)
How does one determine the effective concrete masonry wall thickness, for direct compression, for varied spacings of grouted cells and varied, nominal, concrete masonry wall thicknesses?
Through one example, in a design manual, a 7.625" wall with grouted cells at 24" oc is stated to have an effective wall thickness of 5.2". This statement has no resource or table reference, within the manual, to support this stated value.
I have a 12" wall with reinforced, grouted cells at 16" oc.
The design example in this manual is of no use if I cannot determine the effective wall thickness.
Thank you!
Through one example, in a design manual, a 7.625" wall with grouted cells at 24" oc is stated to have an effective wall thickness of 5.2". This statement has no resource or table reference, within the manual, to support this stated value.
I have a 12" wall with reinforced, grouted cells at 16" oc.
The design example in this manual is of no use if I cannot determine the effective wall thickness.
Thank you!






RE: Effective Masonry Wall Thickness
For 12" wall with grouted cells at 16", Effective area equal to 85.3 sq.in./ft.
Try to get this publication for your masonry needs.
RE: Effective Masonry Wall Thickness
RE: Effective Masonry Wall Thickness
Thank you very much for your response(s). (I do have NCMA-TEK 141B, which is the original TEK for "Section Properties of Concrete Masonry Walls" prior to the revised NCMA-TEK 14-1. I do not have 14-1. Does it show effective wall thickness?)
I am looking for the effective wall thickness.
I need to design a concrete masonry wall for axial and bending. Typically, I use engineering software. However, the unsupported height is 48.00' and the program does not allow me to enter more than one vertical rebar per cell.
The design example in my design manual for reinforced masonry structures, shows the axial load being divided by the effective wall thickness, which, in the example, is 5.2" for a nominal thickness of 8".
Any further support will be very much appreciated.
Thank you, again!
RE: Effective Masonry Wall Thickness
RE: Effective Masonry Wall Thickness
12" full split-faced concrete masonry.
Thank you!
RE: Effective Masonry Wall Thickness
EST=123/24=5.125
RE: Effective Masonry Wall Thickness
RE: Effective Masonry Wall Thickness
Thank You!
EIT2