Snet for a Coped Beam
Snet for a Coped Beam
(OP)
I need to calculate Snet for a W6 x 12 top coped beam. Values are not listed in table 9-2.
As a check I did a hand calc. for a W8x10, dc=2 in, neglecting the fillets and taking the shapes as true rectangles. My Snet came to be 3.6 in. cubed as opposed to 1.54 in. cubed as listed in AISC table 9.2.
These values are not close as I checked my math twice. Despite neglecting the fillets I doubt that is the reason for the difference in the Snet values. I attached a sheet with calcs, something is off....
Thanks for the help.
As a check I did a hand calc. for a W8x10, dc=2 in, neglecting the fillets and taking the shapes as true rectangles. My Snet came to be 3.6 in. cubed as opposed to 1.54 in. cubed as listed in AISC table 9.2.
These values are not close as I checked my math twice. Despite neglecting the fillets I doubt that is the reason for the difference in the Snet values. I attached a sheet with calcs, something is off....
Thanks for the help.






RE: Snet for a Coped Beam
RE: Snet for a Coped Beam
ybar 1 = 1.71
ybar 2 = 5.89 -1.71 = 4.18
Snet min = Ix/ ybar max
= 6.18 in4 / 4.18 = 1.48 in^3
You'll S top and S bottom as with any unsymmetrical shape
RE: Snet for a Coped Beam
BA
RE: Snet for a Coped Beam
RE: Snet for a Coped Beam