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Hi all! Any idea where I can find guides for Tolerances & Surface Conditions for Concrete Elements? I have checked with ACI 117 but I can't really find all the things I need. I. Tolerances A. Flections a. Walls (vertical & horizontal) b. Slabs c. Columns B. Thickness a. Walls...

Openings are for suspended slabs and walls... 150mm thickness for suspended slab and 80mm for walls. I have read several articles online, and each gave diffent multipliers for the length of the rebars from the edge of the...

Hi! I would like to know in what ACI is the Standard Rebar Arrangement around Slab Opening found? I placed 2 diameter 10 trimmer bars around openings, I just want to be sure if I am right. I can't find it in ACI Detailing 2004 :-( Many thanks again.

Thank you all guys... We'll be meeting the client to discuss these issues. I really need to change my beam sizes. You are all of great help. I even recommend my boss to join this forum. This is very helpful.

We are actually designing it using internal glass fibres. I suggested that we use laminates instead, but my boss is firm with the glass fibres mixed in concrete. As far as I know, doing so, will not increase design strength, only the material strength.

The situation is, we have a beam that was designed using steel rebars, however, due to additional loadings as per client's request, we are now facing a dilemna.We are using high strength concrete (50Mpa), and our beam size is already controlled, so we cannot change our sizes already. Due to the...

Hi! Have anybody here encountered concrete design problem, where your steel is yielding and and you cannot increase the size of your concrete section anymore resulting to the most-dreaded "sudden failure"? Thank you very much.

Thank you all... you are all of great help.

I'm sorry what I meant was Material Safety Factors...

Hi! Does anybody know if ACI have Material Factor of Safety aside from the Load Factors only? Many thanks :-)

TO ALL: thank you very much for your help especially to nothing111. i'll keep you posted to what the results are, currently i am off to a new project, so i have to set it aside until i'm done with the new one. :-) thanks again :-)

my reaction wall is 7m high, 17m long and 1.7 m thick... thickness to length ratio would be 0.1

Hi! do you have any idea if there is a relationship between the mesh size and wall thickness? I am designing a reaction wall and strong floor for an actuator and shaking table using etabs. This type of structure requires very thick wall and slab thickness. And do u think that using using...

get the soil bearing capacity, multiply it by 40 and a factor of safety which is usually 1.5. bt the way values are in metric units.

How do you apply base shear with angle? Say instead of applying it directly along x-axis, you have 27 degree angle relative to x-axis. Thanks.

Hi! Has anyone designed a reaction wall and strong table already? I need help as how to set my wall deflection to 0mm. Many thanks!

Self Weight in staad means the weight of the structural member alone. In computing the Base Shear you need the entire weight of your structure, so basically you need to load all the super-imposed dead loads. Super-imposed dead loads includes your masonry wall, slab finishing, waterproofing...