Structural engineers eh!

[RonnyRaygun]

Looking at those calcs, where has she got 'ceiling storage 5.0kN/m2' from?

That's about 100 lbs/sq ft, unless I'm missing something.

Seeing the pics, those beams just look so 'wrong'...........

Could be archive storage loading although the beams don't carry any ceiling load so can't be that.

For some reason she has designed for a max span of 8.1m, as opposed to around 5 1/2.

And then she's taken effective length of 1.2...which is conservative if the end of the beam is surrounded by new, well built blockwork.

And then, for some unknown reason she has limited deflection to 6mm.

Despite all this, allowing the deflection to go marginally over 6mm would have meant a pair of 203 UC 46s could have been used.

Are you sure they're not a surveyor?

 

[noseall]

Can you post the calcs too??

Untitled

• noseall
• 15 May 2015
• 1

 

[tony1851]

Doesn't seem to be a wide span; why not just one steel ridge beam, with 50x200 rafters, and a 2nd steel to support that bit of floor or whatever it is on the left?

Is the SE young/newly qualified?

 

[RonnyRaygun]

The deflection calcs on both the 356 UB and the 254x146 are completely wrong too...I see the 254x146 has archive storage load...but why on the 356 UB?
It does look like a graduate has done calcs that have gone out completely unchecked.

 

[noseall]

For some reason she has designed for a max span of 8.1m

I queried this myself, when speaking to the architect. I think I got shrugged shoulders and a smile.

 

[noseall]

Is the SE young/newly qualified?

Dunno, all the info I got was a piccy.......

 

[noseall]

Seeing the pics, those beams just look so 'wrong'...........

In this image you can see the ridge board. It is 225mm deep and looks puny against that behemoth of a purlin and yes - it does look very wrong.

Untitled

• noseall
• 15 May 2015
• 1

 

[RonnyRaygun]

For some reason she has designed for a max span of 8.1m

I queried this myself, when speaking to the architect. I think I got shrugged shoulders and a smile.

Would it be 8.1m to the flank wall of the main building?

Untitled

• noseall
• 15 May 2015
• 1

 

[RonnyRaygun]

Is the SE young/newly qualified?

Dunno, all the info I got was a piccy.......

I forgive her

 

[^woody^]

I thought all SE's were required to wear Tweed jackets with arm patches as part of ICE membership. She's not an engineer.