Quantcast
Channel: RAM | STAAD Forum - Recent Threads
Viewing all 22496 articles
Browse latest View live
↧

Warning- Zero stiffness in direction...

November 26, 2019, 7:04 am
$
0
0

Hello everybody,

Please help me with the following issue..

I have to analyze a roof steel structure, and after performing the analysis I've received the warning messages with  "zero stiffness in direction..."  I have tried with members defined as truss in the specifications, also partial moment release (after reading some reviews in this forum) but no changes. Can someone advise me where the problem is? Also please find attached my model..Thank you!

communities.bentley.com/.../Ferma-organizare-de-santier_5F00_fara-erori.STD

↧
Search

Opening Rss file

November 26, 2019, 9:40 am
$
0
0

Hello Everyone,

Unable to open a file. Error: Access to unnamed file is denied. Please help me out with any suggestions.

Thanks,

↧
↧

TANK STEEL FRAME ANALYSIS

November 26, 2019, 9:53 am
↧

RAM Load Errors

November 26, 2019, 10:16 am
$
0
0

My RAM model is taking surface loads, line loads, point loads and changing their type and where they are applied in the model creating unconservative results. For example I have a Mechanical Equipment surface load at the roof of my building model and it is replacing line loads elsewhere in the model (see images below). Another example is taking a Mech Equip line load and replacing stair point loads elsewhere in the model.

DOAS load entered as surface load in image below:

RAM has created a line load with same name and applied elsewhere within the model:

↧

Columns outside Slab Edge

November 26, 2019, 3:12 pm
$
0
0

Hey I have a situation where column is outside defined slab edge? What are the implications of this? Please see pic below: 

↧
↧

ETABS SAFE F2K Ram Concept Utility - Line Loads

November 26, 2019, 7:53 pm
$
0
0

I'm currently using the above tool to import point loads from Excel and this is working fine, but currently you can only 'Bulk Import' point loads from Excel and not line loads - is this functionality able to be added into the current utility?   

↧

Advanced Analysis Engine learning path

November 26, 2019, 11:58 pm
↧

RCNX FILE

November 27, 2019, 12:23 am
$
0
0

How to open .rcnx and .bak files

↧
Search

REGARDING FLOOR LOAD.

November 27, 2019, 1:45 am
$
0
0

WHENEVER I WANT TO ASSIGN FLOOR LOAD IT WILL AUTOMATICALLY TAKE X RANGE. WHY IT'S HAPPEN I DON'T KNOW.

↧
↧

How to assign the following support?

November 27, 2019, 2:08 am
$
0
0

How and where could we assign the support if the column is drilled 1 meter under the ground? which means a total length of 3.5 meter column but only 2.5 meter is above ground level, others would be in the concrete footing. shall we ignore the column in concrete footing?

↧

parametric models

November 27, 2019, 2:45 am
$
0
0

In the meshing method tap there is option for basic,standard methods, but there is no option for advanced meshing method which was available in staad v8i, can someone help me find it 

↧

Deflection of Structure in Response Spectrum analysis

November 27, 2019, 5:30 am
$
0
0

Hello all,

we are a analysis a tall boiler building with more irregularities in the response spectrum method as per IS1893 Code.

In the X-direction response spectrum load case-1 ,

i am getting the displacement of the structure torsionally. Refer attached staad file.

where at elevation 30.870m there is change in displacement of structure from +z direction to -z direction. 

Bottom structure is going on +z direction and top structure is going in -Z direction.

But in the Static seismic load case , the structure displacement is unique only in X- direction.No torsional displacement is happening.

Due to torsional displacement occuring in Response spectrum load case, my tie beam at this level are failing in horizontal deflection. no matter how big size beam we put , but the result is same. We can't able to add more beamcommunities.bentley.com/.../ITC_5F00_HPRB_5F00_Tier_5F00_3_5F00_21_5F00_11_5F00_MAIN.stds and brace inside the structure as there are equipment are available.

Can any one please help us in resolving this.

Best regards,

senthilkumar.B

↧

RAM SS DataAccess: inode memberforces via getreactions vs. foundation loads

November 27, 2019, 8:05 am
$
0
0

Are there any reasons for forces obtained via DataAccess in VBA for a node's reactions at the base of column on ground level to be different than the forces shown in the foundation module load case forces report in RAM SS?

I am seeing larger dead and live reactions for the node reactions compared to foundation module report.

↧
↧

Warings about stiffness, instability...

November 27, 2019, 9:41 pm
$
0
0

I have created a model and analyzed. There are 0 errors, but 1530 warnings. Warnings are

1.  *WARNING- NO MEMBERS LOADED FOR A ONE WAY LOAD GENERATION.

2. *WARNING- ZERO STIFFNESS IN DIRECTION ... AT JOINT ... EQN.NO. ...

3.  **WARNING - THERE WERE MORE THAN 12 DOF WITH ZERO STIFFNESS.

4.  ***WARNING - INSTABILITY AT JOINT ... DIRECTION = FY

How can these warnings be resolved? The model has created with I section, tension only and moment released members.

Here i have attached my Staad file. Thank you!

communities.bentley.com/.../RPL-_2800_final_2900_.std

↧

How to define dummy members in Grillage analysis and assign the material properties?

November 27, 2019, 11:12 pm
$
0
0

Can any one suggest defining dummy members in Grillage analysis and assign the material properties  to carry out analysis for moving loads. I shall appreciate if  command file is also shared . 

↧
Search

Deflection

November 27, 2019, 11:37 pm
$
0
0

Hello all, 
I have two questions regarding the deflection in STAAD 
1) When checking the deflection for concrete beams, Does STAAD take in consideration the reinforcement of the concrete members while calculating the deflection ?
2) Can we evaluate the long term deflection using STAAD 

↧

PLATE STRESS AT TOP AND BOTTOM SIDE

November 28, 2019, 1:50 am
$
0
0

Good morning,

I have to make question about STAAD Pro output plate stress ; in particular, I'm going to make a post processor excel file aimed to design concrete reinforcement of a slab according to ACI Code. Is It possible, for each shell, to obtain stress at the bottom and at the top side?

Is there a procedure to follow or a command that allow to have plate stress output (Mx, My, Myx, Sx, Sy, Sxy, SQx, SQy) at each side of the slab?

Thank you, regards

Silvia Conti

↧
↧

Buckling load factor

November 28, 2019, 3:24 am
$
0
0

I am trying to find the buckling load factor for the load case shown below in the second image, that has a value of 22.5 lb . 
the theoretical critical buckling force  is 284.6 lb 

when I did the buckling analysis the BLF was 7, does this means that the buckling occurs at  a force of 7*22.5 = 157.5 lb
can someone help me understand this 


↧

Crashing of staad while using beta angle

November 28, 2019, 3:57 am
$
0
0

Staad crashes while assigning beta angle. Beta angles gets deleted after reopening the staad file. 

↧

Problem Running Custom Design Steel Beam Table

November 28, 2019, 7:44 am
$
0
0

Background Info:
I am located I am Canada therefor use the ramcan Masters table with metric beam sizes. 

I have created a Design Steel Beam Table, but for some reason I get an error when I run it. It says "Error looking up Section W8x10 in Masters Table"? Why doe sit try to lookup a imperial size when the beam table is metric. 



↧
Viewing all 22496 articles
Browse latest View live
Search
<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>