What is the percentage additional load of the column load I should consider

• Aug 23, 2018

• #2

Agent666

Structural

Jul 2, 2008

3,080

NZ

What codes are you designing to? I suspect you'll find the answer in there as to what load factor is on the gravity load & possibly wind load (if this is in fact what you are asking, it's hard to tell sorry).

 

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• Aug 23, 2018

• Thread starter
• #3

KAR FUNG

Structural

Oct 11, 2016

30

MY

design to BS 8110.

 

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• Aug 23, 2018

• #4

Agent666

Structural

Jul 2, 2008

3,080

NZ

So under BS6399 (the old British loadings standard right?) what is the load combinations for wind load cases? Find this and you have your answer.

 

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• Aug 23, 2018

• Thread starter
• #5

KAR FUNG

Structural

Oct 11, 2016

30

MY

Bro, u not answer my question.

 

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• Aug 23, 2018

• #6

Agent666

Structural

Jul 2, 2008

3,080

NZ

Sorry having now looked through BS6399 what I meant isn't in there. What about table 2.1 of BS8110.1, this gives the load factors for ULS design?

If that's not what you are after maybe rephrase your question?

 

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• Aug 23, 2018

• #7

dik

Structural

Apr 13, 2001

26,127

CA

I've done lots of these way back... Used typical tributary areas. This is a little awkward sometimes in determining the areas. For the penultimate supports, I increased the areas by 10%. Did a 2 cycle moment distribution and checked the penultimate trib areas (as an afterthought) to see that the 10% was OK... usually was. I used the 2 cycle for the slab design. This was during the era of sliderules.

As time progressed, I wrote a 2D frame program that ran in 64K on my first PC... Used the frame analysis to determine the info I used to get from moment distribution. This was at the time of electronic calculators.

This was done to the Code in effect at the time.

Dik

 

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