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RE: Error Create any section

July 26, 2016, 12:03 am
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As of now any section defined in Free Sketch or Section builder and exported to STAAD.Pro as a general or a prismatic section, comes in with the properties only.
The .upt file created as a result of the export, does not contain information related to the actual shape of the section.
Hence in STAAD.Pro, the section is shown as a line.
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RE: Error Create any section

July 26, 2016, 12:34 am
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you're so kind!

Thank for helping me.

Tuấn anh.

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Error Create any section

July 25, 2016, 7:44 pm
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Hi everybody.

I want to create a cross-section as show in the image.  but when I saw the 3D rendered View mode was not correctly the section I have created.

Under the are my files. Thanks for helping me.

[View:/cfs-file/__key/communityserver-discussions-components-files/5932/4061.Createsection.std:227:157]

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RE: SS5 vs SS6 AISC 05 code design

July 26, 2016, 3:46 am
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There is no facility in STAAD to specify a beam with 2 webs, except as a rectangular tube.

We often find users trying to approximate a non-standard or built-up section to a "General" section type through a user table in STAAD. But STAAD designs a User Table General section using the rules applicable for a doubly-symmetric I-shaped (wide flange) section.

If that is what you have done too, the program will not be able to recognize the true shape of the section.

The code checks that STAAD performs on any member are done at a total of 13 section locations along the member span - start, end, and 11 intermediate. At each of those locations, it checks to see which flange is under compression for the moment MZ (MY is used if SET Z UP is specified). The flange that is on the positive side of the local Z axis is in tension when MZ is positive, and in compression when MZ is negative (vice versa for the other flange). After the flange that is in compression is established, Iyc is calculated for that flange.
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SS5 vs SS6 AISC 05 code design

September 1, 2015, 9:23 am
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Dear All

Today i got surprised by seeing the stress ratios of my staad file. All members are hotrolled steel section and very much passing in ss4 or ss5 version with AISC 05 unified code now same members are failing with unacceptable level in SS6 version.

If anybody is having same exprience plz share your view's.

I strongly feel there is issue with AISC 05 code in SS6 version. I have rolled back to SS4 version

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RE: *** WARNING:CMN PARAM INVALID FOR NATIONAL ANNEX

July 26, 2016, 3:51 am
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*** WARNING:CMN PARAM INVALID FOR NATIONAL ANNEX

June 15, 2016, 5:18 am
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I am designing a welded steel structure.

As structure is welded i have mentioned

CMN 0.5 to beams

CMN 0.7 to columns (fixed support at bottom of column and tied using beams at top )

It is showing warning:

*** WARNING: CMN PARAM INVALID FOR NATIONAL ANNEX

I have used NA 2

Is my consideration regarding CMN parameter is wrong?

or there is no need to mention CMN parameter for NA 2

Please give suggestions 

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RE: Error in New Version SS6

July 26, 2016, 3:53 am
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Mr. Suro
any answers, suggestions for my post above?
please help
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Error in New Version SS6

June 16, 2016, 1:41 am
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Hi All,

I just installed STAAD pro SS6 latest version and open previous version file(SS5) in new version, but it shows following warning that I had not faced in previous version

please suggest see below image for reference.

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RE: STAAD.Pro Direct Analysis Method Applying Notional Loads Correctly

July 26, 2016, 6:40 am
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My apologies, I meant to say I am looking at example 3.2, not 3.2. Thank you for the pointer about factoring the notional loads. Unfortunately my results still aren't matching those provided in the guide. Do you have any other suggestions? Are 15 iterations sufficient or should I be performing more?

Thank you for your assistance.
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Pregunta para adquirir software RAM

July 26, 2016, 10:57 am
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Hola!! Esta es mi primera vez escribiendo en la comunidad. Soy de Argentina y quisiera saber donde adquirir el software de RAM para Steel Framing. Aca no econtre distribuidor y por otros lugares hablan en otro idioma Ademas por politicas de jurisdiccion no puede vender alguien de otro lado tengo entendido. Desde ya muchas Gracias!!

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RE: Memory Issues Performing an Analysis

July 26, 2016, 11:21 am
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Michael : There were memory related issues when carrying out design as per the AISC 360 in earlier versions of STAAD.Pro but these have been fixed since then. So if you are not using the latest 20.07.11.70, I would suggest upgrading to that one which should address the memory issues. Also SET NL should only be set to the number of primary load cases and so if you have 43 primary cases, it would be good enough to set it to 50. No need to set it to the number of combinations. That would free up some memory but more importantly, switching to the latest version should take care of the problem. If you still face the issue, please upload your .std file and I will troubleshoot further.

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RE: STAAD.Pro Direct Analysis Method Applying Notional Loads Correctly

July 26, 2016, 11:27 am
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Can you please upload your .std file so that I can take a look at it ?
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RE: STAAD.Pro Direct Analysis Method Applying Notional Loads Correctly

July 26, 2016, 11:35 am
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Yes, I uploaded my .std file using the Secure File Upload. Thank you for looking into this.
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RE: Memory Issues Performing an Analysis

July 26, 2016, 1:43 pm
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Unfortunately due to the nature of the project I'm on I cannot upgrade the version of STAAD or send you the .std file.

I revised the input file so that SET NL was set to 50, but I'm still unable to run the analysis past 200 load combinations. Any other suggestions? Would upgrading from 16GB ram help?

Just to note, I had issues running the analysis with far fewer load combinations (originally 50). It seemed that by adding PERFORM ANALYSIS at various points in the input seemed to help? Also I was successful at running the analysis with more load combinations, 300, after I removed all code checks.
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RE: Memory Issues Performing an Analysis

July 26, 2016, 3:05 pm
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What is the STAAD.Pro version you have ( 20.07.xx.xx number that you can find from within Help > About STAAD.Pro ) ? With the size of model you mentioned, I am not sure why you are having the memory issues even after commenting out the design. If you do not carry out the design, I would think it should analyze for all 600 combinations. Are you getting the memory overflow type error messages when you do that ? Using a very high value for the MEMORY command can also be detrimental.

For the design part, you may break up the CHECK CODE commands into multiple CHECK CODE commands each with a list of approximately 200 members and that can help. Upgrading the RAM can help too but it is difficult to conclude what is causing the errors in memory without actually looking at the model. There is a secure upload option where your uploaded file can only be reviewed by Bentley colleagues …wondering if that is possible for you to do. Else we can also create a service request and communicate with you on a one-to-one basis but even then also, you have to send the file for troubleshooting.
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Memory Issues Performing an Analysis

July 26, 2016, 10:53 am
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I'm trying to analyze a large model (15,000 nodes, 31,000 beams, 2500 plates) but I'm receiving various error messages. The analysis has 17 reference load cases, 43 primary load cases and 600 load combinations along with code check commands. The error messages range from "SProSTaad MFC Application has stopped working" to "Error not enough memory for AISC Unified Steel Design-2" to "Error-STAAD built in memory block has overflowed" to "Error not enough memory for section force calculation-2".

There are no CHANGE commands and I've added SET NL based on the number of load combinations in the input. Adding MEMORY 220 to the input file I was able to run 200 load combinations. Increasing the MEMORY command much beyond 220 produces an error message. I also added SET STAR 4 command, but I am still limited at 200 load combinations. 

Is there anything else I can do to run this analysis with more than 200 load combinations? My current computer has 16GB ram, would increasing this allow STAAD to analyze more than 200 load combinations? 

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RE: STAAD.Pro Direct Analysis Method Applying Notional Loads Correctly

July 27, 2016, 7:20 am
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RE: STAAD.Pro Direct Analysis Method Applying Notional Loads Correctly

July 27, 2016, 7:23 am
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STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 01-Jul-16
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 30 0; 3 40 30 0; 4 40 0 0; 5 80 30 0; 6 80 0 0; 7 120 30 0;
8 120 0 0; 9 160 30 0; 10 160 0 0; 11 200 30 0; 12 200 0 0; 13 240 30 0;
14 240 0 0; 15 280 30 0; 16 280 0 0; 17 320 30 0; 18 320 0 0; 19 360 30 0;
20 360 0 0; 21 400 30 0; 22 400 0 0;
MEMBER INCIDENCES
1 1 2; 2 2 3; 3 3 4; 4 3 5; 5 5 6; 6 5 7; 7 7 8; 8 7 9; 9 9 10; 10 9 11;
11 11 12; 12 11 13; 13 13 14; 14 13 15; 15 15 16; 16 15 17; 17 17 18; 18 17 19;
19 19 20; 20 19 21; 21 21 22;
SUPPORTS
1 4 6 8 10 12 14 16 18 20 22 FIXED BUT MY MZ
MEMBER RELEASE
4 6 8 10 12 14 16 18 20 START MZ
2 4 6 8 10 12 14 16 18 END MZ
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 7200 FU 9360 RY 1.1 RT 1.2
G 1.60615e+006
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 3 5 7 9 11 13 15 17 19 21 TABLE ST W24X117
2 4 6 8 10 12 14 16 18 20 TABLE ST W24X146
*These are the final member sizes in Example 3.2
CONSTANTS
MATERIAL STEEL ALL
DEFINE DIRECT ANALYSIS
FLEX 1 ALL
FYLD 7200 ALL
AXIAL LIST ALL
NOTIONAL LOAD FACTOR 0.002
END
************************************************************************
LOAD 1 LOADTYPE Dead  TITLE DEAD LOAD
MEMBER LOAD
2 4 6 8 10 12 14 16 18 20 UNI GY -1.28
*There was an additional 7 psf applied to dead load to account for all
*selfweight; therefore, actual selfweight does not need to be applied
*(25+7)psf*40' gives 1.28 kpf
************************************************************************
LOAD 2 LOADTYPE Snow  TITLE SNOW LOAD
MEMBER LOAD
2 4 6 8 10 12 14 16 18 20 UNI GY -1.2
*30psf*40' gives 1.2 kpf
************************************************************************
LOAD 5 LOADTYPE Wind  TITLE WIND +Y
MEMBER LOAD
1 UNI GX 0.8
LOAD 6 LOADTYPE Wind  TITLE WIND -Y
MEMBER LOAD
21 UNI GX -0.8
*20 psf with a 40' tributary area gives 0.8 kpf
*************************************************************************
*LOAD 10 NOTIONAL LOAD Y+
*NOTIONAL LOAD
*1 X 0.002
************************************************************************
LOAD 103 COMB3 = 1.4(D) + NY
REPEAT LOAD
1 1.4
NOTIONAL LOAD
1 X 0.0028
************************************************************************
LOAD 104 COMB4 = 1.4(D) - NY
REPEAT LOAD
1 1.4
NOTIONAL LOAD
1 X -0.0028
************************************************************************
LOAD 107 COMB7 = 1.2(D)+1.6(S) + NY
REPEAT LOAD
1 1.2 2 1.6
NOTIONAL LOAD
1 X 0.0024 2 X 0.0032
************************************************************************
LOAD 108 COMB8 = 1.2(D)+1.6(S) - NY
REPEAT LOAD
1 1.2 2 1.6
NOTIONAL LOAD
1 X -0.0024 2 X -0.0032
*************************************************************************
LOAD 111 COMB11 = 1.2(D)+0.5(S)+1.6(WY) + NY
REPEAT LOAD
1 1.2 2 0.5 5 1.6
NOTIONAL LOAD
1 X 0.0024 2 X 0.001
**********8*************************************************************
LOAD 112 COMB12 = 1.2(D)+0.5(S)-1.6(WY) - NY
REPEAT LOAD
1 1.2 2 0.5 6 1.6
NOTIONAL LOAD
1 X -0.0024 2 X -0.001
*************************************************************************
LOAD 115 COMB15 = 1.2(D)+1.6(S) + 0.8(WY) + NY
REPEAT LOAD
1 1.2 2 1.6 5 0.8
NOTIONAL LOAD
1 X 0.0024 2 X 0.0032
************************************************************************
LOAD 116 COMB16 = 1.2(D)+1.6(S) - 0.8(WY) - NY
REPEAT LOAD
1 1.2 2 1.6 6 0.8
NOTIONAL LOAD
1 X -0.0024 2 X -0.0032
*************************************************************************
LOAD 119 COMB19 = 0.9(D) + 1.6(WY) + NY
REPEAT LOAD
1 0.9 5 1.6
NOTIONAL LOAD
1 X 0.0018
************************************************************************
LOAD 120 COMB20 = 0.9(D) - 1.6(WY) - NY
REPEAT LOAD
1 0.9 6 1.6
NOTIONAL LOAD
1 X -0.0018
UNIT INCHES KIP
PERFORM DIRECT ANALYSIS LRFD ITERATION 15 PDITER 15
************************************************************************
UNIT FEET KIP
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD LRFD
CB 1 ALL
BEAM 1 ALL
FU 9360 ALL
FYLD 7200 ALL
MAIN 200 ALL
METHOD LRFD
RATIO 1 ALL
TRACK 2 ALL
UNIT INCHES KIP
LOAD LIST 103
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 104
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 107
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 108
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 111
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 112
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 115
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 116
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 119
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
LOAD LIST 120
PRINT MAXFORCE ENVELOPE LIST 1 2
PRINT SECTION DISPL LIST 1
*Expected Moments in Moment Frame Column, kip-in
*Taken from AISC Guide 28 example 3.1
*COMB 103 1810 - ok
*COMB 104 2550 - ok
*COMB 107 2720 - ok
*COMB 108 5660 - ok
*COMB 111 3440 - NG
*COMB 112 8610 - NG
*COMB 115 2420 - NG
*COMB 116 10800 - NG
*COMB 119 2930 - NG
*COMB 120 5720 - NG
*Expected Moments in Moment Frame Beam, kip-in
*Taken from AISC Guide 28 example 3.1
*COMB 103 3400 - ok
*COMB 104 3030 - ok
*COMB 107 6940 - ok
*COMB 108 5460 - NG
*COMB 111 6840 - NG
*COMB 112 822 - NG
*COMB 115 9490 - NG
*COMB 116 2910 - NG
*COMB 119 4220 - NG
*COMB 120 92.8 - NG
*Expected Axial Load in Moment Frame Column, kip
*Taken from AISC Guide 28 example 3.1
*COMB 103 39.60 - ok
*COMB 104 41.10 - ok
*COMB 107 74.80 - ok
*COMB 108 80.90 - ok
*COMB 111 35.50 - NG
*COMB 112 60.70 - NG
*COMB 115 64.10 - NG
*COMB 116 91.60 - NG
*COMB 119 16.90 - NG
*COMB 120 35.00 - NG
FINISH

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RE: Memory Issues Performing an Analysis

July 27, 2016, 9:58 am
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I have version 20.07.11.50. I was able to run the analysis with 600 load combinations by not performing any code checks.

I was able to upgrade my memory to 32GB ram, but could only run 300 load combinations with the code checks. I will try to run code checks in smaller groups and see if that helps.

As for sending you the model, I will look into that, but I doubt my project will let me send you the model. Thanks.
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