## Robot Structural Analysis

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic to the Top
- Bookmark
- Subscribe
- Printer Friendly Page

# RC BEAM deflection

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Email to a Friend
- Report Inappropriate Content

Hi artur

Aditionally I have send the optimization calculations for the same beam

Why ARSA gives the error for shear load it is optimizing isn´t?

1 and how to limit the deflection for each span

1.1 if I set the deflection in the member type definition, only the "absolute" deflection is available not the relative

# Re: RC BEAM deflection

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Email to a Friend
- Report Inappropriate Content

I'm not sure if I understand the situation correctly but my understanding is that:

1. You compare elastic deflection of the beam (static analysis of the model) with the cracked one (RC beam design module)

2. In the RC Member required reinforcement you use only ULS cases therefore cracked deflection is not checked

**Artur Kosakowski**

# Re: RC BEAM deflection

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Email to a Friend
- Report Inappropriate Content

Artur

Thank for your answer

Yes, I refer me to the elastic deflection, then we can add to the final drawings the estimated deflection due by cracking

# Re: RC BEAM deflection

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Email to a Friend
- Report Inappropriate Content

I do apologize but I'm not sure what issue should I actually investigate.

In short the intended design of RC beam in Robot is:

1. Static calculations of the entire model

2. Export of a selected beam to the RC Beam design module

3. Design of the beam with cracked deflection limit in this module

In this process there is no estimation of the cracked deflection based on the elastic one as the exact value of the cracked deflection is given by the RC design module. Am I missing something?

**Artur Kosakowski**