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StructuralEng
StructuralEng, Consultant
Category: Structural Engineering
Satisfied Customers: 6689
Experience:  Structural Engineer
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I have a 3.355 span under a corrugated iron roof. If I have

Customer Question

Hello
I have a 3.355 span under a corrugated iron roof.
If I have two 90mm posts then the span is 3.175
What size beam will suppprt.
I'm thinking 90x90mm.
Submitted: 1 month ago.
Category: Structural Engineering
Expert:  StructuralEng replied 1 month ago.

Hello

Expert:  StructuralEng replied 1 month ago.

I can help.

Expert:  StructuralEng replied 1 month ago.

Is this beam supporting multiple other beams?

Customer: replied 1 month ago.
It's an old fashioned so there's a top plate with roof rafters on top of that and corrugated iron
Customer: replied 1 month ago.
Expert:  StructuralEng replied 1 month ago.

So this is supporting rafters on one side only?

What is the rafter length?

Customer: replied 1 month ago.
Not sure what you mean by "on one side only".
It's a cut roof.
Rafters are 4 meters and (I think) supported in the middle.
Expert:  StructuralEng replied 1 month ago.

Does this beam have rafters framing in on one side only or on both sides?

Customer: replied 1 month ago.
On one side only
Customer: replied 1 month ago.
Expert:  StructuralEng replied 1 month ago.

I'm sizing the beam now.

Customer: replied 1 month ago.
Estimated time to do ?
Customer: replied 1 month ago.
How are you going with this ?
Expert:  StructuralEng replied 1 month ago.

UB 203 x 133 x 25

Customer: replied 1 month ago.
Please give me mm measurements of beam in height and width and thickness.
And what profile. I beam or C channel or Square section or Rectangular section
Expert:  StructuralEng replied 1 month ago.

203 mm tall x 133 mm wide

I beam

Expert:  StructuralEng replied 1 month ago.

The designation provided is what you need.

Customer: replied 1 month ago.
What steel thickness.
What measurements would it be in Square or Rectangle section.Seems to be too much.
Expert:  StructuralEng replied 1 month ago.

It's an I beam as I stated above.

Expert:  StructuralEng replied 1 month ago.

It's not too much if you want to limit the deflection to 10mm

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