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Dual monitors rule for all applications.....Highly recommend.

Failures like these are good topics for CEU seminars.

I'm looking to collect all the older editions

Do you know where I can buy older versions of steel mnuals, I tried eBay?

Yes, thank you Galambos! I knew I saw that somewhere before but I could not find it. I actually read it in another publication. I've been looking for it for the past two years.

For a concrete wall bending transversely, does the direction of the dowel hook of the vertical wall reinforcing bar into the footing bends. Whether it bends towards each other or away from each other, in a wall with two layers of reinforcing.

If you are refering to heated in reference to snow loads,Ct factor the heated is refering to the internal building being heated vs. unheated interior.

Correction to the above phi = 1 case: For tension controlled zones: Sd x U = fy/fs x (unfactored loads) phi = 1

It is my understanding that: U = the factored loads per Section 9.2.1 Gamma = factored loads(U)/unfactored loads fs = fs,max per section 10.6.4.1, or the actual fs phi = max of 0.9 for tension controlled Sd = phi(fy)/gamma/fs Sd varies with gamma because of different U values...

See the following link for more feedback on the exam: www.engineerboards.com

I did not really need it, but the examples helped me during the exam.

BridgeEI, What bridge design books do you recommend for the building structurals interested in bridges.

Interesting side note to this conversation. For roof top units, in figure 6-21 of ASCE7-05, I have always used h = height of the roof top unit above the top of roof. However, after attending a wind seminar, we were told that h = the height of the building + 1/2 the height of the roof top unit...

For an explanation of their intent see the commentary on page 300, section C6.5.11, Fig. 6-8, 6-18, 6-19, 6-21, and 6-22.

Happy Hollidays, Good luck to all in the new year, See you on the other side.

Is designing a tapered wall any different from a straight wall. If the tensile reinforcement is on an angle do you make any adjustments or design as usual.

RMunoz, Also, you mentioned crack control in both directions. Did you have bending in both directions. Did you use the actual calculated fs (aci 350 10.6.4.6), or did you use fs,max(aci 350 equation 10-4, section 10.6.4.1. aci 350-06.

RMunoz, I see CJ is construction Joint. I think you wanted to type ACI 350 and not 530 for the crack control design.

RMunoz, I don't have control to add walkways. I have to live with the free top. I have #11@6 on the interior and #10@6 on the exterior, vert bars at the base. I am planning to use 1 Expansion Joint and Construction Joints at 40ft oc. Did you continue the expansion Joint from the wall thru...

Open tank, no roof.