Radius of gyration for unreinforced masonry pier
Radius of gyration for unreinforced masonry pier
(OP)
How do you calculate the radius of gyration for an unreinforced masonry pier 16"x16" plan dimensions?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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Radius of gyration for unreinforced masonry pier
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RE: Radius of gyration for unreinforced masonry pier
RE: Radius of gyration for unreinforced masonry pier
(I/A)^0.5 = 4.5105 in^4.
NCMA says 16" fully grouted (or solid) units have an ravg of 4.51 in^4.
RE: Radius of gyration for unreinforced masonry pier
Ix of pier is 2048.4 in^4, area is 79.8 in^2.
RE: Radius of gyration for unreinforced masonry pier
RE: Radius of gyration for unreinforced masonry pier
firstly, if it is fully grouted, two block area is An=244in^2, secondly, the Ix of two block is Ix=4967 in^4,
thirdly after Ix/An, you need square root it to get r=4.52.
RE: Radius of gyration for unreinforced masonry pier
RE: Radius of gyration for unreinforced masonry pier
Is this a trick question?
RE: Radius of gyration for unreinforced masonry pier
I did forget to hit the square root key on the calculator. Didn't change much in my check, though. allowable stress dropped 1/2%. New r is 5.07.
yes this is to determine axial load capacity. the r is used in the slenderness reduction portion of the equation.