I am getting this warning: WARNING- Deflection check of member # 11 will not be performed as DFF value not provided. I am sharing the input command. Please provide your view. STAAD SPACE START JOB INFORMATION ENGINEER DATE 15-May-23 END JOB INFORMATION…

How does Concept implement section 24.2.3.8 of ACI318-14 which permits the deflections of Class U slabs to be based on Ig? I am working on a model where the plots for Ieff/Ig for the load history deflections indicates significant reductions in stiffness…

When viewing a specific beam Diagram, does the selected Load Case change the shown deflections? Wondering if my deflections for each load case are in fact very close/the SAME... or if deflection is purely D+L serviceability deflection? Secondly is D…

Can someone please define/review my understanding of the following Deflection loads shown in the beam results report? Initial Load = dead and live construction loads + deck and beam self weights Live Load = live load Post Comp Load = super imposed…

In Ram, I am designing a beam with a short cantilever per AISC 360. I am curious about how the program computes the deflection when I define the beam as composite, since the stiffness (Inertia) under live load varies depending on the span loaded. Does…

I have a situation in STAAD.Pro version 22.08.00.175 where the code check (AISC 360-16 LRFD) is giving me wildly different answers than I see when inspect the element interactively. This is causing the SELECT function for this steel design to fail. …

Good Afternoon, My computer updated RAM to the latest software version 17.03.00 285 SES overnight, and my model went from no beam design errors to 1500 deflection errors. Upon investigation I discovered that this is happening because RAM seems to…

I have a Staad Pro model that I am using AISC 360-16 to design. I have my DFF and DJ1 and DJ2 parameters applied by there's no deflection showing in the analysis output report. I read from https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki…

Hello, I have a large steel industrial building that I am only trying to do a deflection check on in this model. The strength design is done in a different model under AISC 2016. This deflection model is under AISC 2010 as I have been directed by coworkers…

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!

I am getting extreme lateral displacements for one diaphragm in my model (100s of inches). The remainder of the model is behaving as expected. I'm not sure what could be causing this as I've gone through a lot of trial and error. Any help would be appreciated…

Hi all, Deflection results from the RAM Concept model don't seem to be correct. I've spent hours on this and cant figure out why this is the case. Any input is appreciated. For example: - 200 slab, 10.4m x 8m bay - only 16 mm long term strip deflection…

I have large W-beams that span 60ft +/-. At the center of these beams I am getting a deflection of +4inch, 60ft x 12in/ft / 240 = 3" NG (DFF = 240) I have used the dj1 and dj2 parameters, so the check should be over the full 60ft I only have gravity…

Hi there! I am working on a 2 way podium slab and do not quite understand why I am finding a difference in the Max Short Term Deflection and the Service LC for max deflection. In my model after running it I check the Service LC: D+L Max Deflection…

Hi, I have two RAM Concept suspended slab models which will not converge when running the load history deflections and I am at a loss as too why. Below is the warning provided in the Load History Calc Log: WARNING: An error has been found while…

RAM is returning the wrong net deflection value for cantilevered members in Frame. See images below: <<< net deflection incorrect <<< gross deflection correct Also the graphical output is not very good since the numbers are often right on top of…

Howdy, Are the deflections reported in the Max and Min Deflection Plans under a given load combination layer, say Service LC: D+L, based on cross-section effective moment of inertia? Can RAM Concept report max and min deflections based on cross-section…

warehouse.zip wind calculation also in that folder.... try to fix this probem guys

I have got my report, but there is no loading details like dead load, Wind loads and all... In report settings i have added Loadings, but its not showing.... Wt to do???? i want to see other load details. How to get that details?

I am playing around with a simple beam analysis in STAAD (version 20.07.11.82) with only member dead load case (1.0 gravity load factor). I initially had it modeled as a 2-member beam fixed at a midspan joint. Then I changed it to a single member. The…

Is there any way to extract/view the post composite deflections along the length of the member? Right now you can view the DL, LL, and total deflections from the "Diagrams" option in the Steel Beam Module or the maximum deflections via the "View Results…

Dear Community I'm having some issues with DFF comand. I'm using version 20.07.11.45 I'm designing a basic frame (5m) span for a pipe support and when i use the DFF command for checking the deflection there are some issues that i'd like to address…

I am just a learner ... so in a long span rcc beam abt 12m there was no deflection in animation but as I placed a cross beam over long beam at center , major deflection is now showing in animation . Is it due to the long beam splitted in two segments…

Hello, I am designing shop prefabricated structure for lifting / transport / handling. I have 2 files / cases with similar configuration and weight / loads applied. But still I find the deflection for both of them differ by 80% margin. I am uploading…

I am hoping to use STAAD for beam design for a run of simple span beams with dead and live loads. I currently can not get the program to stop designing for deflection based on factored loads. I was strength design based on envelope 2 and deflections…