Nice video! On geotech we have this equation for eccentric loaded footings: Qmax=Load/BL x (1+(6e)/B) Qmax=110/1024 x (1+6x5/32)=0.208 kips/in2 where e = eccentricity = 5 in B=width and L= length (in this case both 32 in)
yes Luis - great equations, structural engineers use the same ones for footing bearing pressure checks, based on the allowable soil parameters given by the geotechnical engineer!
Just a thought, since the NCEES came out with a reference handbook (Beta), for future videos, you should try to reference that since it’ll be going to CBT after October?
I had no idea Jeff! I'm looking it up now and will check it out. I think that's a great idea to get that integrated into our design practice. could be VERY helpful
Great video! Thank you. In the new online exam, the Civil Handbook we are given seems to contain far less info than the physical book. For example, I could not find the equation you used to find stress. How would you recommend dealing with this?
Please solve a problem involving steel hollow section with diametrically opposite eccentric load. The column is fixed in ground and free in air on other end. Also there is lateral load on the midsection of the column. Appreciate your guidance.
Hi Ivie, unfortunately no, the internal bending stresses due to the eccentric load still breaks down to additional axial loading along the extreme fiber of the column. so it would be the combined axial + bending stresses.
Amazing explanation ! Finally a clear and concise explanation on the plus/munis sign. Thanks man !
Nice video! On geotech we have this equation for eccentric loaded footings:
Qmax=Load/BL x (1+(6e)/B)
Qmax=110/1024 x (1+6x5/32)=0.208 kips/in2
where e = eccentricity = 5 in
B=width and L= length (in this case both 32 in)
yes Luis - great equations, structural engineers use the same ones for footing bearing pressure checks, based on the allowable soil parameters given by the geotechnical engineer!
This clicked for me! Eccentric loads explained very thoroughly...thank you!!
Glad it was helpful!
Just a thought, since the NCEES came out with a reference handbook (Beta), for future videos, you should try to reference that since it’ll be going to CBT after October?
I had no idea Jeff! I'm looking it up now and will check it out. I think that's a great idea to get that integrated into our design practice. could be VERY helpful
Just wanted to say, this is a great video. Amazing explaination of everything involved.
Much appreciated!
S = I/c, not c/I
I am the somebody, really helpful. I never really understood the eccentrical load problems.
Could you possibly point out where we could find this equation in the codes since the reference manual does not have it (CBT)
Great video! Thank you. In the new online exam, the Civil Handbook we are given seems to contain far less info than the physical book. For example, I could not find the equation you used to find stress. How would you recommend dealing with this?
Please solve a problem involving steel hollow section with diametrically opposite eccentric load. The column is fixed in ground and free in air on other end. Also there is lateral load on the midsection of the column. Appreciate your guidance.
Love your explanation!
Glad it was helpful!
If c/I=S, then the equation will be M*S. S is equal to I/c instead
Hi, thanks for the video. Since the question asks for max "axial" compressive stress, would that mean calculating only Force / Area?
Hi Ivie, unfortunately no, the internal bending stresses due to the eccentric load still breaks down to additional axial loading along the extreme fiber of the column. so it would be the combined axial + bending stresses.
Is it allowed to open the AISC book during the exam?
youll be given an electronic AISC I believe!