Quantcast
Channel: RAM | STAAD Forum - Recent Threads
Viewing all 19776 articles
Browse latest View live
↧

Staad foundation

May 6, 2021, 3:26 am
$
0
0

Hello, this is regarding staad foundation. the sizing of the foundation is based on service loads? it is found, for combined foundations, the bearing capacity for the designed size is only 10-15% of allowable.

that means, if 200kN/2 is SBC, the actual bearing pressure based on on staad selected footing size is 26kN/m2, which results to an uneconomical foundation. please explain why it is like that.

snap shot is attached for quick reference.

kindly confirm following

1. plan sizing of footing is w.r.t service loads.

2. sizing to be determined by stablity factors and actual bearing presure for service loads.

↧
Search

storey drift fails

May 6, 2021, 3:45 am
$
0
0

WARNING : THE INTER-STORY DRIFT EXCEEDS THE ALLOWABLE LIMIT L / 250 FOR 1893 LOAD CASE 2

3 -0.0000 -0.0027 0.0000 0.0027 L / 3543 ----
4 -0.0000 -0.0005 0.0000 0.0005 L / 20153 ----
5 -0.0000 -0.0039 0.0000 0.0039 L / 2421 ----
6 0.0348 -0.0030 0.0348 0.0030 L / 272 ----
STAAD SPACE -- PAGE NO. 785




STORY HEIGHT LOAD AVG. DISP(CM ) DRIFT(CM ) RATIO STATUS
------------------------------------------------------------------------------------------
(METE) X Z X Z

BASE= 0.00 ALLOW. DRIFT = L / 250
(1893 LOADING ONLY)

7 -0.0348 -0.0030 0.0348 0.0030 L / 271 ----
8 -0.0000 0.0442 0.0000 0.0442 L / 214 ----

WARNING : THE LOAD COMBINATION 2 CONTAINS 1893 SEISMIC LOAD CASE NO.
9 -0.0000 -0.0502 0.0000 0.0502 L / 188 ----

WARNING : THE LOAD COMBINATION 2 CONTAINS 1893 SEISMIC LOAD CASE NO.
10 0.0435 -0.0032 0.0435 0.0032 L / 217 ----
11 -0.0435 -0.0032 0.0435 0.0032 L / 217 ----
12 -0.0000 0.0558 0.0000 0.0558 L / 169 ----

WARNING : THE LOAD COMBINATION 2 CONTAINS 1893 SEISMIC LOAD CASE NO.
13 -0.0000 -0.0622 0.0000 0.0622 L / 152 ----

WARNING : THE LOAD COMBINATION 2 CONTAINS 1893 SEISMIC LOAD CASE NO.
14 0.0435 -0.0019 0.0435 0.0019 L / 217 ----
15 -0.0435 -0.0019 0.0435 0.0019 L / 217 ----
16 -0.0000 0.0571 0.0000 0.0571 L / 165 ----
STAAD SPACE -- PAGE NO. 786


WARNING : THE LOAD COMBINATION 2 CONTAINS 1893 SEISMIC LOAD CASE NO.
17 -0.0000 -0.0609 0.0000 0.0609 L / 155 ----

WARNING : THE LOAD COMBINATION 2 CONTAINS 1893 SEISMIC LOAD CASE NO.

↧
↧

Stacked Beams

May 6, 2021, 6:06 am
$
0
0

What is the best way to model beams that are resting on top of each other like in the drawing below?

↧

joint code check issue

May 6, 2021, 2:09 pm
$
0
0

To Whom May Concern,

I recently update to Ram SS verison 17.02.01.23 SES from 17.01.

When I review the model created under the older version Ram SS, under Ram frame the icon for joint code check is disable.

However, the joint code check report can still be print. Could you please explain why?

Thank you in advance.

↧

seismic force

May 6, 2021, 6:05 pm
$
0
0

Hello everybody.

When I have a building structure with two different seismic systems for example moments fame in the x-direction and braced frame in the z-direction, the equations are different for them. Saad only avoids one seismic definition. 

How do I define earthquakes in both directions?
↧
↧

RAM Frame Deflection - Graphical options

May 6, 2021, 8:35 pm
$
0
0

Is there a way to graphically view the deflection, deflection magnitude, and node number in RAM Frame for a certain load case and/or load combination?

Thanks!

↧

How to check load value for member for which it is designed in stadd ?

May 6, 2021, 10:33 pm
$
0
0

Dear Members,

Can we check the total upcoming load on a particular member ( Beam / Column )  for which it is designed in staad pro ?

As, I am doing some check, whether load transfer on a  particular beam member due to floor load is distributed properly or not. 

Ex - Two way slab  span 6m x 4m

load distribution on a span of 4 m beam ( triangular load distribution) - wlx/3

w - 4 kn/m2 applied by floor loading

total load on a beam including self weight and  due to triangular distribution is - 0.23 x0.23x25 + (4x4)/3 =  6.59KN/m

Therefore, I am assuming 6.59Kn/m load should be distributed per meter length of the beam and the beam should be design for this particular load. Please help me to know whether this approach is correct or not ?

Also, PFA stadd model below. (Check beam 49)

)communities.bentley.com/.../24173.Structure1.std

↧

Revit analytical model to RAM Structural System

May 7, 2021, 6:18 am
$
0
0

Hi everyone,

I am trying to export the analytical model from revit to RAM SS.

I have the following softwares with versions indicated:

1) RAM Structural System v17.00.01

2) Revit 2021 21.0.0.383

3) ISM Revit Link x64 11.02.01.007

4) Structural Synchronizer CONNECT Edition V11 Update 1

Using the above softwares, I am able to generate ISM file from revit. But I am unable to import it into RAM SS because RAM SS says ISM is not installed.

Could someone please guide me to resolve this.

↧
Search

I NEED A HELP ON HOW TO CREATE A HOLE IN A BEAM STAAD PRO CONNECT EDITION

May 7, 2021, 7:23 am
$
0
0

Is it possible to create a hole in reinforced concrete beam?

↧
↧

Footing weight in RAM foundation

May 7, 2021, 4:09 pm
$
0
0

Does RAM Foundation apply the load combination factor to the DL of the footing?

I'm thinking about overturning and uplift effects.  For instance, one of the soil combinations is .6D + .7E...  does RAM only use .6D for the footing weight or does it use the full weight?

It is common to use the full DL of the footing (and only .6 of the DL of the superstructure) when looking at uplift and overturning.  While the DL of the superstructure may be overestimated (leading to reduced overturning) the weight of the footing is a very well known number.

If RAM does indeed only use .6 of the footing weight, is there a way to override that?

↧

After I transfer the critical live vehicle loads from staad beava to staad pro. How to design further?

May 8, 2021, 1:28 am
$
0
0

After critical live loads are transferred from staad beava to staad pro. How do I design further as per IRC. How to create further load combinations including self weight etc. 

Do we also design bridges using Is 456 command and selecting beam, columns , slab commands.

Pls elaborate 

↧

RAM rafter to rafter conection

May 8, 2021, 10:26 am
$
0
0

hello guys! I have a problem with rafter to rater apex connection. I am realy confused why is it in RAM if we cant use it(if posts that I read are true)?

How can I use it?

I would like something like this:

↧

HSS conection

May 8, 2021, 10:59 am
$
0
0

Hello guys! I need an afvice for my portal frame structure. I want  to use  Square hollow section for bracing in my Portal frame structure. As I read that HSS is not suported in RAM conection.

It would be great if someone sugested me an alternative to this or any other wa to design them!

I am considering even to manualy calculate gusset plate connections for bracing.

Why is RAM so limited and is there any alternative to this??

↧
↧

Staad Pro Area, One Way and Floor Loads - Uniformly Varying

May 8, 2021, 4:20 pm
$
0
0

in the Staad Pro manual it says the following about Area, One Way and Floor loads:

G.15.3 Area, One-way, and Floor Loads

The following assumptions are made while transferring the area/floor load to member load:

  1. The member load is assumed to be a linearly varying load for which the start and the end values may be of different magnitude.

I'm trying to understand if it is possible to use define a varying load. Other locations in the manual state that the pressure must be uniform. Is it possible to make the load varying?

Thanks!

↧

Staad Pro - How to Add to A Group

May 8, 2021, 6:56 pm
$
0
0

How can you add additional members to an existing group without the group being wiped out? Is there a better way to "group" members? 

For example - say you have a truss, you might want "top chord", "bottom chords", "webs". Would you use groups for this so you could easily select and change size or property?

Thanks!

↧
Search

Unable to open staad file

May 9, 2021, 6:55 am
$
0
0

Dear All, 

I am getting below attached error while open staad model. Please help me to know, what's an exact issue here and how to resolve it. 

 

↧

*** ERROR *** ABOVE LINE CONTAINS ERRONEOUS DATA. DATA-CHECK MODE IS ENTERED.

May 9, 2021, 9:05 am
$
0
0

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 09-May-21
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 3.2 0 0; 3 8.3 0 0; 4 0 0 2.2; 5 3.2 0 2.2; 6 8.3 0 2.2; 7 0 0 5.2;
8 3.2 0 5.2; 9 8.3 0 5.2; 10 0 0 8.8; 11 3.2 0 8.8; 12 8.3 0 8.8; 13 0 0 12.3;
14 3.2 0 12.3; 15 8.3 0 12.3; 16 0 -3.2 0; 17 3.2 -3.2 0; 18 8.3 -3.2 0;
19 0 -3.2 2.2; 20 3.2 -3.2 2.2; 21 8.3 -3.2 2.2; 22 0 -3.2 5.2;
23 3.2 -3.2 5.2; 24 8.3 -3.2 5.2; 25 0 -3.2 8.8; 26 3.2 -3.2 8.8;
27 8.3 -3.2 8.8; 28 0 -3.2 12.3; 29 3.2 -3.2 12.3; 30 8.3 -3.2 12.3;
31 0 3.2 0; 32 3.2 3.2 0; 33 8.3 3.2 0; 34 0 3.2 2.2; 35 3.2 3.2 2.2;
36 8.3 3.2 2.2; 37 0 3.2 5.2; 38 3.2 3.2 5.2; 39 8.3 3.2 5.2; 40 0 3.2 8.8;
41 3.2 3.2 8.8; 42 8.3 3.2 8.8; 43 0 3.2 12.3; 44 3.2 3.2 12.3;
45 8.3 3.2 12.3; 46 0 6.4 0; 47 3.2 6.4 0; 48 8.3 6.4 0; 49 0 6.4 2.2;
50 3.2 6.4 2.2; 51 8.3 6.4 2.2; 52 0 6.4 5.2; 53 3.2 6.4 5.2; 54 8.3 6.4 5.2;
55 0 6.4 8.8; 56 3.2 6.4 8.8; 57 8.3 6.4 8.8; 58 0 6.4 12.3; 59 3.2 6.4 12.3;
60 8.3 6.4 12.3; 61 0 9.6 0; 62 3.2 9.6 0; 63 8.3 9.6 0; 64 0 9.6 2.2;
65 3.2 9.6 2.2; 66 8.3 9.6 2.2; 67 0 9.6 5.2; 68 3.2 9.6 5.2; 69 8.3 9.6 5.2;
70 0 9.6 8.8; 71 3.2 9.6 8.8; 72 8.3 9.6 8.8; 73 0 9.6 12.3; 74 3.2 9.6 12.3;
75 8.3 9.6 12.3; 76 0 12.8 0; 77 3.2 12.8 0; 78 8.3 12.8 0; 79 0 12.8 2.2;
80 3.2 12.8 2.2; 81 8.3 12.8 2.2; 82 0 12.8 5.2; 83 3.2 12.8 5.2;
84 8.3 12.8 5.2; 85 0 12.8 8.8; 86 3.2 12.8 8.8; 87 8.3 12.8 8.8;
88 0 12.8 12.3; 89 3.2 12.8 12.3; 90 8.3 12.8 12.3; 91 0 16 0; 92 3.2 16 0;
93 8.3 16 0; 94 0 16 2.2; 95 3.2 16 2.2; 96 8.3 16 2.2; 97 0 16 5.2;
98 3.2 16 5.2; 99 8.3 16 5.2; 100 0 16 8.8; 101 3.2 16 8.8; 102 8.3 16 8.8;
103 0 16 12.3; 104 3.2 16 12.3; 105 8.3 16 12.3; 106 0 19.2 0; 107 3.2 19.2 0;
108 8.3 19.2 0; 109 0 19.2 2.2; 110 3.2 19.2 2.2; 111 8.3 19.2 2.2;
112 0 19.2 5.2; 113 3.2 19.2 5.2; 114 8.3 19.2 5.2; 115 0 19.2 8.8;
116 3.2 19.2 8.8; 117 8.3 19.2 8.8; 118 0 19.2 12.3; 119 3.2 19.2 12.3;
120 8.3 19.2 12.3;
MEMBER INCIDENCES
23 1 16; 24 2 17; 25 3 18; 26 4 19; 27 5 20; 28 6 21; 29 7 22; 30 8 23;
31 9 24; 32 10 25; 33 11 26; 34 12 27; 35 13 28; 36 14 29; 37 15 30; 38 1 31;
39 2 32; 40 3 33; 41 4 34; 42 5 35; 43 6 36; 44 7 37; 45 8 38; 46 9 39;
47 10 40; 48 11 41; 49 12 42; 50 13 43; 51 14 44; 52 15 45; 53 31 46; 54 32 47;
55 33 48; 56 34 49; 57 35 50; 58 36 51; 59 37 52; 60 38 53; 61 39 54; 62 40 55;
63 41 56; 64 42 57; 65 43 58; 66 44 59; 67 45 60; 68 46 61; 69 47 62; 70 48 63;
71 49 64; 72 50 65; 73 51 66; 74 52 67; 75 53 68; 76 54 69; 77 55 70; 78 56 71;
79 57 72; 80 58 73; 81 59 74; 82 60 75; 98 61 76; 99 62 77; 100 63 78;
101 64 79; 102 65 80; 103 66 81; 104 67 82; 105 68 83; 106 69 84; 107 70 85;
108 71 86; 109 72 87; 110 73 88; 111 74 89; 112 75 90; 128 76 91; 129 77 92;
130 78 93; 131 79 94; 132 80 95; 133 81 96; 134 82 97; 135 83 98; 136 84 99;
137 85 100; 138 86 101; 139 87 102; 140 88 103; 141 89 104; 142 90 105;
158 91 106; 159 92 107; 160 93 108; 161 94 109; 162 95 110; 163 96 111;
164 97 112; 165 98 113; 166 99 114; 167 100 115; 168 101 116; 169 102 117;
170 103 118; 171 104 119; 172 105 120;
ELEMENT INCIDENCES SHELL
188 1 2 5 4; 189 2 3 6 5; 190 4 5 8 7; 191 5 6 9 8; 192 7 8 11 10;
193 8 9 12 11; 194 10 11 14 13; 195 11 12 15 14; 196 31 32 35 34;
197 32 33 36 35; 198 34 35 38 37; 199 35 36 39 38; 200 37 38 41 40;
201 38 39 42 41; 202 40 41 44 43; 203 41 42 45 44; 204 46 47 50 49;
205 47 48 51 50; 206 49 50 53 52; 207 50 51 54 53; 208 52 53 56 55;
209 53 54 57 56; 210 55 56 59 58; 211 56 57 60 59; 212 61 62 65 64;
213 62 63 66 65; 214 64 65 68 67; 215 65 66 69 68; 216 67 68 71 70;
217 68 69 72 71; 218 70 71 74 73; 219 71 72 75 74; 220 76 77 80 79;
221 77 78 81 80; 222 79 80 83 82; 223 80 81 84 83; 224 82 83 86 85;
225 83 84 87 86; 226 85 86 89 88; 227 86 87 90 89; 228 91 92 95 94;
229 92 93 96 95; 230 94 95 98 97; 231 95 96 99 98; 232 97 98 101 100;
233 98 99 102 101; 234 100 101 104 103; 235 101 102 105 104;
236 106 107 110 109; 237 107 108 111 110; 238 109 110 113 112;
239 110 111 114 113; 240 112 113 116 115; 241 113 114 117 116;
242 115 116 119 118; 243 116 117 120 119;
ELEMENT PROPERTY
188 TO 243 THICKNESS 0.125
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.17185e+007
POISSON 0.17
DENSITY 23.5616
ALPHA 1e-005
DAMP 0.05
TYPE CONCRETE
STRENGTH FCU 27579
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
23 TO 82 98 TO 112 128 TO 142 158 TO 172 PRIS YD 0.3 ZD 0.3
CONSTANTS
MATERIAL CONCRETE ALL
SUPPORTS
16 TO 30 FIXED
DEFINE 1893 LOAD
ZONE 0.24 RF 3 I 1 SS 1 ST 1 DM 0.05
ELEMENT WEIGHT
188 TO 235 PRESSURE 8
236 TO 243 PRESSURE 4
LOAD 1 LOADTYPE Seismic TITLE SEISMIC+X
1893 LOAD X 1
LOAD 2 LOADTYPE Seismic TITLE SEISMIC-X
1893 LOAD X -1
LOAD 3 LOADTYPE Seismic TITLE SEISMIC+Z
1893 LOAD Z 1
LOAD 4 LOADTYPE Seismic TITLE SEISMIC-Z
1893 LOAD Z -1
LOAD 5 LOADTYPE Dead TITLE DEAD LOAD
SELFWEIGHT Y -1 LIST ALL
ELEMENT LOAD
188 TO 235 PR GY -8
236 TO 243 PR GY -4
LOAD 6 LOADTYPE Live REDUCIBLE TITLE LIVE LOAD
ELEMENT LOAD
188 TO 243 PR GY -4
START CONCRETE DESIGN
CODE INDIAN
FC 25000 ALL
FYMAIN 500000 ALL
FYSEC 500000 ALL
MAXMAIN 40 ALL
MAXSEC 16 ALL
MINMAIN 10 ALL
MINSEC 8 ALL
TRACK 2 ALL
DESIGN COLUMN 23 TO 82 98 TO 112 128 TO 142 158 TO 172
DESIGN ELEMENT 188 TO 243
CONCRETE TAKE
END CONCRETE DESIGN
FINISH

↧
↧

Seismic load case for planted column

May 9, 2021, 2:12 pm
$
0
0

Dear Sir,

I have a steel planted column on my steel beam at first floor. 
Kindly advise which factor will be applied with seismic load combination to analyze this column. 

is there any factor like 2.2 E ? 

↧

Warnings - The plate is not connected to the beam

May 9, 2021, 8:58 pm
$
0
0

I got this warning when designing a connection for fin plate. I cannot seek any help from the menu. Can someone explain to me?

Thanks

↧

***ERROR: THE RAYLEIGH FREQUENCY 5.16213E-07 IS LESS THAN 0.00001 FOR LOAD 1

May 9, 2021, 11:20 pm
↧
Viewing all 19776 articles
Browse latest View live
Search
<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>