Strength Analysis Steel Metal grating Frame 2

[smalik7]

Hi. I am doing a project for calculation of steel metal grating. I have to do strength analysis of steel metal grating having uniformly distributed load of 400kg/m2 and point load of 80 kg. Which eurocode standards i should follow apart from 1993-1-1 for finding appropriate load factors for this case. I will do my analysis on workbench.

 

[HTURKAK]

Which eurocode standards i should follow apart from 1993-1-1 for finding appropriate load factors for this case. I will do my analysis on workbench.

You are expected to look EN 1990 Eurocode. Basis of structural design. Typical comb. and load factors are
1.35Gk + 1.5Qk

You can download old versions free of charge , since law resource.

https://www.phd.eng.br/wp-content/uploads/2015/12/en.1990.2002.pdf

 

[smalik7]

You are expected to look EN 1990 Eurocode. Basis of structural design. Typical comb. and load factors are
1.35Gk + 1.5Qk

You can download old versions free of charge , since law resource.

https://www.phd.eng.br/wp-content/uploads/2015/12/en.1990.2002.pdf

Thank you for your response i can not find 1.35Gk + 1.5Qk in eurocode 1990. Can you give the chapter number in which i can look for these values and what its for

 

[XR250]

Forget Eurocode. Design using ASD with the loads stated. Use the AISC manual as "code"
It is a grating frame, not a skyscraper.

 

[HTURKAK]

Thank you for your response i can not find 1.35Gk + 1.5Qk in eurocode 1990. Can you give the chapter number in which i can look for these values and what its for

Pls look EQ (6.10a)


And Normative Table A1.2(A) - Design values of actions




In case of accidental actions the load factors are different.

 

[wth]

The factors in 1990 may vary in the various national annexes, probably not critical for OPs grating, but in Norway it's:
6.10 a: 1.35 x DL + 1.05/0.9 x LLs, or
6.10b: 1.35 x 0.89 + 1.5 x LL (main) + 1.05/0.9 x LL (other) for STR combinations.

 

[DoubleStud]

Typically the grating manufacturer has a listed loading capacity and spans. Here is one example

https://assets.mcnichols.com/content/dam/mcnichols/resources/PDF/LT-SDW-GW-GW2-CS-GV.pdf

 

[EngDM]

Typically the grating manufacturer has a listed loading capacity and spans. Here is one example

https://assets.mcnichols.com/content/dam/mcnichols/resources/PDF/LT-SDW-GW-GW2-CS-GV.pdf

You can calculate load capacities as well. The Nucor and Vulcraft catalogues give equations and section properties for standard grating (at least standard to what is used in Canada and, more broadly, North America).

 

[jayrod12]

Agree with EngDM, the design is essentially first principles so it's fairly straightforward to do a capacity check.

 

[smalik7]

Pls look EQ (6.10a)
View attachment 3925

And Normative Table A1.2(A) - Design values of actions


View attachment 3926

In case of accidental actions the load factors are different.

The

Pls look EQ (6.10a)
View attachment 3925

And Normative Table A1.2(A) - Design values of actions


View attachment 3926

In case of accidental actions the load factors are different.

The steel metal grating will be used in livestock industry so using eurocode 1990 standard will be ok?

 

[smalik7]

The factors in 1990 may vary in the various national annexes, probably not critical for OPs grating, but in Norway it's:
6.10 a: 1.35 x DL + 1.05/0.9 x LLs, or
6.10b: 1.35 x 0.89 + 1.5 x LL (main) + 1.05/0.9 x LL (other) for STR combinations.

Thank you. It is very helpful the frame will be used in livestock industry so it will be ok?