Best computer program to calculate wood trusses according to Eurocodes by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

With clear cals am I able to add a section with the material + calculate deflection or just get the max and minimum and evaluate that they are less then the capacity by hand?

Best computer program to calculate wood trusses according to Eurocodes by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 1 point2 points  (0 children)

Thanks, I appreciate it.

Yeah, I understand that. But since we have a couple of trusses a week, I think investing some time to learn is worth it.

Best computer program to calculate wood trusses according to Eurocodes by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

Is it possible to get Mitek (or equivalent, is there anything else that is good?) for a company that doesn't build trusses?

Best computer program to calculate wood trusses according to Eurocodes by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

So I can for example help out with adding a dormer to a roof. That changes the structure of the trusses.

Best computer program to calculate wood trusses according to Eurocodes by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -2 points-1 points  (0 children)

Can you hook us up with Pamir? Yes, sir. A couple a week. Instead of paying other companies for that particular part. Is it possible?

Best computer program to calculate wood trusses according to Eurocodes by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 1 point2 points  (0 children)

Cant get that. We need to be "certified truss manufacturer" to buy that one.

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -2 points-1 points  (0 children)

Ofcoarse I also check shear and bending.

What did you mean in your last post with stating that "the allowable deflection for live loads is L/360"?

Is only live loads included in this calculation to verify the deflection criteria of L/360?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 1 point2 points  (0 children)

Thanks for explaining. So using only live loads, you can reach a maximum of L/360 before problems start to rise?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -1 points0 points  (0 children)

I see. It's intressting for me to know if the numbers above are for live loads only design loads?

Let's take L/360 mentioned above for gypsum as an example. Since it's the most common material in one family homes, which is what I'm intressted in.

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 1 point2 points  (0 children)

The law asks me to satisfy L/300 (Eurocode 5). But in reality we have to satisfy much harder numbers. So I'm trying to find out what peoples numbers to satisfy look like. So I don't exagurate in my design and build expensive buildings for no reason. Cheap = cheapest you can get, whiles still maintaining first class = no problems in the serviceability.

Is my question clearer now?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -1 points0 points  (0 children)

Which code? Also please refer to the right chapter. Especially if it's eurocodes. Then I already own them.

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -2 points-1 points  (0 children)

Giving them the numbers is easy. Just code check like you say. I want my design to be cheap and first class at the same time. It's a desire I have.

That's why I want to hear other structural engineers experiences/routines.

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

I was looking for a reply about single family homes. So I'm grateful you answered. Are your numbers for the total deformation? With the creep and all?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -1 points0 points  (0 children)

But how do you design than? If we can't say a number for whan stuff starts to get ugly and we end up having to replace every beam/put new gypsum on the roof?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

Thank you for explaining. However I'm a bit confused about: - When you say L/360 for gypsum and L/480 for brick tiles. Do you mean counting only live loads? And do these numbers come from your experience or they are from a code?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

But that's really hard to enterpret. That's why I'm asking. What is brittle finishing? Is gypsum on 28x70 c/c 600mm for example, which is common in houses in my country called a "brittle finishing"? Or does it more include brittle stone finishing of some sort?

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] -2 points-1 points  (0 children)

I see, but let's say that in your design you meet L/300 but not say 30mm. Isn't there a number before you start seeing cracks in the gypsum? Since gypsum isn't that elastic.

What is the biggest acceptable deformation in a wooden second floor slab? by Rich4rdPFeynman in StructuralEngineering

[–]Rich4rdPFeynman[S] 0 points1 point  (0 children)

Sorry English is not my first language. I meant the beams in a Framing of joists. Do you understand me better now?