geoffxr4

are there any engineers that could possibly help me with a calculation.

I have a keystone HD/K 50 lintel 3.3m long and an RSJ that sits on it. Keystone have told me that worst case scenario (centre point) the lintel will take a 5-10 KN point load. My RSJ sits just off the 150mm lintel pier. Therefore it can obviously take a bigger point load than if it were in the centre so i know it's safe. Where the RSJ sits on the lintel R= 2.25 KN so it's well within limits but my building inspector wants something written from keystone (which they wont do) or a calculation.

Does anybody know how to calculate it...?

Keystone HD/K 50 3.3m long

Height 209mm
Thickness 3.2mm

Total UDL in Kn 3:1: 35

Total UDL Kn 19:1: 32

ixx: 1099.84 cm4
zxx: 77.01 cm3

Cheers

jammy86

Can you make a diagram of exactly what you mean with as much detail as possible on it? I'm not sure I fully understand the problem but can probably work out how to do it with a bit more explaination.

PM me or I'll forget.

JAmes.

geoffxr4

thanks for the reply. Here is a diagram of the arrangement:



Basically the UB is resting on the lintel but it's so close to the supporting wall that i'm sure the lintel could take a massive load at this point. It's only 2.25 Kn anyway and the lintel can take 10 Kn in the centre but the Building inspector is questioning it (nto really sure why). I know the reaction at the point the UB meets the lintel from my structural calcs is 2.25 Kn. Keystone couldn't give me figures for point loadings but said they could be calculated from the info they gave me

Or maybe there is another way to prove it by relation to UDL and point loading?? As the UDL is 35 Kn and my point load is only 2.25Kn there may be an equation to relate the two?

Any help appreciated.

Cheers

JTECH James

iTrader: (13)

i think user JjCoDeX75 is your man!