• Centroid Stress Plan inaccurate compared to hand calc P/A

    For context working on a 8in PT slab. In the banded direction in my interior bays I have 24 strands (26.8 kip/strand) for a trib width of 29 ft. Thus I have a stress of 230 psi (24'*26.8kip/ft / (28'*12*8")). When I look at Centroid stress plan under…
  • Instability in Slab Joint

    Hi, I am getting 2 warnings. Both are about instability in a joint in the My direction. The joints are highlighted in red in the following image. The joints highlighted are in the middle of the slabs. I have pinned the slab edges. Why are these…
  • Modelling an Elevated Slab as Plates in combination with Floor Diaphragm Command

    Good day. I understand that for rigid diaphragm slab action, you are NOT required to model the slab as plates if you are to use the Floor Diaphragm command. But for this frame structure that I am working with, there are certain floor loads that…
  • One-way ribbed slab

    How can i design a this kind of slab on staad pro, i'm still a new user of the software so please put some detail to help me.
  • Two-Way and One-Way Slab Modeling

    In RAM SS, I've previously come across a "Fatal Error" in RAM Frame. This prevents the program from opening Frame, and the cause is related to two slabs in the model. Both are One-Way slabs that are supported on one side by a continuous beam, and by a…
  • SLAB LOAD COMBINATIONS ARE NOT LOADED IN RCDC

    Hello, I have modeled a wall that rests on a slab on four beams and when going to the RCDC I do not see the option of being able to load the slab with the load combination created in STAAD, which is, by the way: All I see in RCDC is this: Instead, as…
  • Trimming Design Strips: Ram Concept 2-Way PT Slab

    Given the layout of strips, in odd configurations due to irregular structural geometries, is it in y'all's opinion reasonable to review the original strips for any code-related failures (i.e. shear or tension) and make the proper adjustments to the PT…
  • STAAD - Modeling a Slab - Why I am getting a lower moment?

    Hello, I am new to STAAD and this forum, and this is my first post! I wanted to model an 8.67' X 31.5’ Slab with a 16,000 lb. load applied at the center. The slab will have fixed ends at all sides. As a “one-way slab”, the expected max moment utilizing…
  • How do I analyze the Slab Loads on this?

    I have attached a picture of a plan where a clear head room without beams is to be provided. G+3 building with common portal frame. I am unable to assign floor loads as there is no closed boundary.
  • Dummy beam

    Hello Everyone. I create a dummy beam with density=0 and E=0 (Figure.1) then I assign the beam (Figure.2) then Staad Error occurs( ***ERROR*** MATERIAL NAME MUST NOT CONTAIN ANY BLANK SPACE )(Figure.3), What is the solution?
  • I want to use RCC floor slab effect on the steel structure of an industrial building. Shall I use master slave command or shall I use floor diaphram command?

    steel quantities especially column size get reduce while considering the rigidity of RCC floor into account. what shall be right approach to consider its effect.
  • How does STAAD determine beam deflections?

    Hello, I am modeling a floor slab (1 ft thick) with concrete beams (all 24" wide x 36" deep). These beams will be cast monolithically with the floor slab, therefore the beams are modeled as 24" deep. My question is how does STAAD determine the following…
  • Can I design a Continuous two slabs by using RCDC STAAD?

    Hello Sir RCDC is designed and Detailed all the slab one by one but I want to detail all Top and Bottom Reinforcement of the two-way slab once, what should I do.
  • ACI 318 SLAB CHECKS

    Googevening, performing concrete slab verification with staad pro (ACI Code), I noticed some discrepancies between input data definition, as reported below: and output results obtanained from calculations are listed below: in particular the…
  • Warning - Instability at Joint

    Hello, I am getting a warning at a joint that is not restrained. It is an element near a pin support. This model is for a roof slab. I am not sure how to resolve the warning. Any help would be appreciated. Thanks, Pascual 1108.GLM Childrens…
  • 1 way shear effective depth calculation

    I have an existing two-way slab that I am trying to analyze. At locations of negative bending, the effective depth for one way shear calculations is much smaller than I'm calculating it to be by hand. Based on the value that the audit is showing, it…
  • Column and Wall Rigid Zone

    Hi, I am reading a post about modeling in RAM Concept. One of the questions mentioned rigid zones at columns and walls. See the snapshot below: My question is what stiffness factors one should use for these rigid zones: Thank you.
  • Results Along Line - Exporting a Moment diagram of a section.

    Hi I have been asked to take a cross section diagram of a slab's moment diagram and need to be able to use this within my report. How can I do this and can I add detail to the basic diagram which appears at the first instance when taking a cut of results…
  • STAAD RCDC IMPOSED LOAD

    While designing reinfoced concrete slab in RCDC it asks for the Imposed Load and Live Load to fill out; it doesnt collect the load data from STAAD model. Should include the self weight of the slab in the IMPOSED LOAD or program calculates and adds the…
  • Shear Capacity of Slab

    Hi, In RAM concept it shows you a shear plan required for the reinforcing. I understand that these shear bars are shown over columns because of punching shear. If it is not shown over a column or a concentrated load from above, does this mean the…
  • Slab Design by plate.

    I can not add plate to this area. Im not under standing this. How to add plate here for design of slab?
  • GEOMETRY PROBLEMS

    I am new in staad pro so please answer this question in very easy language....! what is differences between plates and surfaces. if i want to make slab or floor i can use both of these which one is correct for floor or slabs... and what type of…
  • RAM Structural System modeler - Gable roof warehouse slab edges and decks

    Do I need to put separate slab edges on gable roof planes on opposite sides of a ridge, and if so, then is there a trick to getting this done? I can put in one perimeter of slab edges, with one of the four edges coinciding with the beam at the ridge,…
  • Error - No punch cutoff sections found

    Hi, I'm a relatively new user and having an issue with the error message below; It is happening for all of my edge columns. I've played with the geometry, trying a flat slab, with an edge thickening and varied the punching shear "maximum search radius…
  • Pipe Rack + Vertical Vessel Slab design in Staad Pro

    Dear Community, I´m designing a slab foundation mat for a pipe rack and some vertical vessel, I have already designed the structure with STAAD Pro, and now I’d like to attack the model some plates “mesh” and estimate the base pressure, overturning…