Antnyt23
Structural
- Jul 11, 2012
- 81
I am curious when designing masonry walls(masonry openings) which way everyone tends to lean when they design.
NCMA prefers designing modular wall openings.... or wall openings that allow for all conformant block sizes. I believe they recommend 2" on each side of the window (so 4" horizontal width + window size) and 8" vertically ... 2" above... 2" below and 4" for sill.
But in order to provide modular wall openings you tend to have provide openings that's are fairly larger than the window sizes unless it tends to work out very well for you.
however, most window manufacturer's have set there masonry opening requirements and I often see residential structures designed just based off of that which will cause odd block spacing and due to the odd size openings.
for example say a SH25 the manufacturer would just say provide a 37 7/8" x 63" M.O. this is nice and easy but will cause for several odd blocks or field accommodating by the mason.
I know its not a big deal for the masonry work to be taken care of in the field I was just curious, how everyone sizes their masonry openings.... whether it was based off of the window manufacturer's or whether it was based off of what worked modular to not have odd blocks or partial blocks just full and half blocks and left the openings larger requiring more work by the window installers.
NCMA prefers designing modular wall openings.... or wall openings that allow for all conformant block sizes. I believe they recommend 2" on each side of the window (so 4" horizontal width + window size) and 8" vertically ... 2" above... 2" below and 4" for sill.
But in order to provide modular wall openings you tend to have provide openings that's are fairly larger than the window sizes unless it tends to work out very well for you.
however, most window manufacturer's have set there masonry opening requirements and I often see residential structures designed just based off of that which will cause odd block spacing and due to the odd size openings.
for example say a SH25 the manufacturer would just say provide a 37 7/8" x 63" M.O. this is nice and easy but will cause for several odd blocks or field accommodating by the mason.
I know its not a big deal for the masonry work to be taken care of in the field I was just curious, how everyone sizes their masonry openings.... whether it was based off of the window manufacturer's or whether it was based off of what worked modular to not have odd blocks or partial blocks just full and half blocks and left the openings larger requiring more work by the window installers.
