Calculating moments on a concrete structure
Calculating moments on a concrete structure
(OP)
I am designing a concrete box that is 13.5 m long by 4.5 m wide by 5.1 m deep. The box will be buried 5 m in the ground. I am using a soil weight of 16 kN/m3 and a concrete weight of 24 kN/m3 and the walls will be 0.3 m thick. I need to calculate the moments of each wall and the moments acting on the floor. A simple moment calculation if the force x distance where the force is acting. Now I have read a couple of books where they have used weigth of wall/floor (wf) x span (ln) squared x 1/8. I am a little confused and could use some insite into this.






RE: Calculating moments on a concrete structure
Design consideration should also include lateral pressure due to soil on all sides, upwards force induced by buoyancy depending on the watertable for the bottom, and vertical live load in addition to the soil and concrete dead weight.
Based on how the question is worded, I would recommend you get more direction from your immediate supervisor.
RE: Calculating moments on a concrete structure
PCA (Portland Cement Association) has a similar publication in print called "Design of Rectangular Tanks", but it's mostly worthless.
RE: Calculating moments on a concrete structure
You're asking the simplest of about 14 other questions that need answering....
DBD
RE: Calculating moments on a concrete structure
RE: Calculating moments on a concrete structure
RE: Calculating moments on a concrete structure
RE: Calculating moments on a concrete structure
RE: Calculating moments on a concrete structure
Sagging momant; positive moment.
RE: Calculating moments on a concrete structure
Are "hogging moment" and "negative moment" synonomous?