• Why IS Code 800-2007 LSD fails Ratio INFINITY, while AISC 360-10 ASD passed Beam with Ratio 0.44? Taper beam

    1) Design check by IS Code 800-2007 LSD fails gives result of Bending Ratio = “INFINITY”, which passes with AISC 360-10 ASD Ratio 0.44! Also IS 800 code output does not give any ratio in both major, minor axis! 2) Is this 12 mm Flange thickness is critical…
  • An inclined member (Stair stringer-MC 12x10.6) passing with AISC 360-10ASD, but failing in AISC 360-16 ASD showing Cl.D1

    I am designing a Stair stringer with MC 12x10.6, keeping all parameters same, results showing as failed in AISC 360-16 ASD but passing in AISC 360-10 ASD. The failure clause D1 is same in both versions.
  • Design of Solid slab (Conventional slabs)

    Hello Everyone For a while, I was using an Advanced Concrete Design (RCDC) for the design of a solid slab. Today I tried to learn the RAM concept for the slab designs but I saw a design of strips that had never seen before (When I was using RCDC and…
  • AISC Code Check

    Hello, I am new to STAAD and have ran into an issue when checking a model. The model was initially checking for ACI 360-10 so I went to the STAAD Editor and changed the code check command to 2016. This changed the utilization ratio drastically on most…
  • RAM CONNECTION- 4 vertical bolt row + EN 1993 PRYING ACTION METHOD 1 & METHOD 2

    could any one kindly clarifiy what are these option MEthod 1 & method 2 for prying action calculated as per EN 1993 if you can tell the reference from eurocode or any other document that would be of great help . Also if wanted to know if there…
  • Parameters are not considered while performing tensile rupture strength as per AISC 360-10

    I was going through the staad output. In that while using WT sections, I came to know that axial tension rupture capacity is not multiplied with LRFD or ASD factors. Why is it so? For W sections its showing correct but for WT its not. abc.std
  • Issue on torsion checks of round HSS using AISC 360-10

    Hi, I am analyzing a a frame of primarily individually defined round HSS sections, sections are defined as below. When the frame is post-processed with the AISC 360-10 code Method ASD, it appears that even when the code states TORSION 0, the program…
  • fire protection effects

    Good day, Can STAAD pro be used to account for the additional stiffness and strength provide to steel columns from the concrete encasement (composite column sections)? I have noticed the fire protection tab in specifications and I've read in Article…
  • RE: Design of single angle as per IS 800 and AISC 360-10 codes in STAAD

    The AISC 360-10 allows single angles to be designed as per geometric axis only under certain conditions like if the angle has a continuous lateral restraint or the angle is an equal angle, bending only about one of the geometric axis with no compression…
  • Tension members in Staad

    Good Day, I have attempted the direct analysis method on a steel structure I have to design, however I have the following queries as it relates to the effect tension only members will have on the analysis (the structure has tension rods in the form…
  • direct analysis with tension members

    Good day I have modeled a structural steel frame building and analyzed it using the direct analysis method, however I have received a few warnings and I would like to know the relevant of these as well as their potential effect on my analysis results…
  • Direct Analysis method using AISC 360-10

    hi, I am using Staad pro v8i SS 6, version 20.07.11.70 after analysing piperack staad file, i am getting below note message in output file for every load case and load combination defined using repeat load. "** NOTE : MOMENT BALANCE DOES NOT CONSIDER…
  • RE: Limcon Bolt Strength

    In AISC 360-10 table J3.2, for A490X bolts, Fnv is 579 MPa. It was 520 in the 2005 edition of the manual, however. Here's a reference regarding the 2010 changes: http://msc.aisc.org/globalassets/modern-steel/archives/2011/11/2011v11_a_comparative_look…
  • RE: Bent Plates in RAM Connection

    I think the situation here is that AISC 360-10, Table 10-9 is used in the case of a single plate connection only. We opted to only implement this for shear tabs since it's within that specific section of Chapter 10, but it would be a good question for…
  • Exception[access violation]Raised! Aborting Analysis.....

    Hello, I try to run the analysis and CODE CHECK with a LOAD LIST using AISC 360-10 on a pretty big STAAD model and I receive the error message "Exception[access violation]Raised! Aborting Analysis....." I have read other post on this forum relating…
  • RAM Connection - Column Splice Moment Connection (Flange-plated) & Single Shear Plate

    I am designing a column splice in RAM Connection. Both columns are W10x49 A992 Gr50. Shear = 50 kips, Axial = -300 kips, M33 = 150 kip*ft. After designing the problem, I obtain results with demand values I do not know. How did RAM Connection calculate…
  • AISC 360-10 Missing Members from Code Check

    When carrying out a code check to AISC 360-10 using STAAD Pro V8i SS5 (20.07.10.41), the 2nd, 3rd and 4th members in my member list are consistently omitted from the code check. The member first in the list displays a UR and this also appears on the unity…
  • Web Tapered Members - Plate wise estimate

    Dear Sir/Madam, I have designed a Frame using web tapered members in STAAD Pro. The frame weight shows the weight of different beams members used. For example, the frame is having a member whose dimensions are Web- 250 to 750 mm Web thickness…
  • Member Check to AISC 360-10 and AISC Design Guide 9

    Hi, I have some questions regarding member check to AISC 360-10. So I was doing some check on a simple member (attached output file), and then I checked it using hand calculation to verify the numbers (I need to know how the program do simpler problem…
  • STAAD shear calculation error for AISC 360-10

    Hi All, I have noticed that STAAD incorrectly calculates the shear capacity for a member. Specifically, it uses a VERY large shear area (overstated by a factor of 2!). Here is the output for an Australian 250UC72.9: INTERMEDIATE: Aw: Cv: Kv: h/tw: Vn…
  • STAAD V8i series 4 (20.07.09.31) ( slenderness check)

    Hi, Currently I am using AISC 360-10, I assigned slenderness value 200 ( main 200) to members. some of the members are fail in slenderness but STAAD result shows "pass" could you please tell me why it happens ? please see attached snap below. …
  • Design of composite (Steel beam+deck slab) as per AISC, BS & Eurocode

    Dear bentley & friends, I had modeled the floor beams as composite and gave design parameter for Eurocode but design not performed and I had changed the code to BS and AISC, in this two codes composite design is done but not in eurocode. Why? How…
  • Direct Analysis Method

    Hi! I am new with Direct Analysis Method so I decided to run an example of a frame we saw in class with Staad Pro. The example in class was developed by a linear first order analysis with increased moments factors B1 and B2. Unfortunately, after running…
  • ¿How to change units in the Steel Design Detail output?

    Hi, I'm using Staad.Pro V8i (SELECTseries 4) and I would like to get the data of the "Steel Design Detail" output Report in kN METER units (not KIP FEET). It maybe in any track type. I'd appreciate your help with that. It's just something I have tried…
  • Response Spectrum Analysis

    Dear Sir, We have a model where the units is set to Mton and cm . Our questions are; a.) Do we have to convert accleration scale factor to 9.805*100? b.) Do we have to convert the Period Vs accleration curve *100? ( Max 0.18, so 0.18*100?) C.…