Need a formula for shear strength of a pipe
Need a formula for shear strength of a pipe
(OP)
I just got asked a question I hadn't heard before. I need to know the shear strength of an 48" RCP pipe buried 12 feet to invert in what i believe is saturated soils. The pipe will be lined with CIPP. I know the Flex Modulus, Flex Strength and Tensile Strength of the liner.
Richard A. Cornelius, P.E.
WWW.amlinereast.com





RE: Need a formula for shear strength of a pipe
RE: Need a formula for shear strength of a pipe
Am sure you did a search - but this is what I quickly found - which isn't "much" for free. Do you think that he might have been talking about the "shear strength" of the concrete (i.e., compressive strength)?
h
http
http
RE: Need a formula for shear strength of a pipe
I'm not sure there would ever be enough confinement to mobilize the shear strength of the whole pipe cross section, except possibly within the bell of a joint. But that would also require rigid confinement of the bell, which isn't likely in saturated soil.
Typical shear is not a failure mode for which the pi;e is tested or required to meet under ASTM standards. Pipe load capacity is based on load testing under a crack width criterion.
The Concrete Pipe Design Manual of the American Concrete Pipe Association does not list shear strength as a variable, a parameter, or a criterion for any of the pipe characteristics.
RE: Need a formula for shear strength of a pipe
RE: Need a formula for shear strength of a pipe
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Need a formula for shear strength of a pipe