RAM Concept V8 Update 4 - Design strip at exterior column with non orthogonal edge of slab.
I have a condition where the beams (& edge of slab) intersect at the column at an angle. They are not aligned with each other and/or with the column face. This is a PT slab and due to the obvious reason, my service condition stress is not working because…
Single layer of reinforcement in RAM Concept
I am designing a mat slab that will have a single layer of reinforcing. I have followed the advice on the FAQ page, but am getting an error with my design strips that the reinforcement has too much cover. I am trying to center the reinforcement in the…
RAM Concept Ultimate moment not tally with '' strength design , top reinforcement plan '' output for RC beam design
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Dear all,
I noticed that the Ult Moment from the design strip is not tally with the output of the area of steel reinforcement require for the beam design.
The photos attached above :
Beam size : 600 X 1000/1300
Mult = -1420 kNm (hogging) …
RAM Concept Extent of Design Strips
I have recently encountered a PT model that used truncated design strips, which were shortened such that the design strips terminate 12"-16" from the faces of supports (walls, columns, beams). It seems that this would artificially reduce the maximum stresses…
Ram concept - Strip design - and shear reinforcement
Hi I have few questions: Q1) I have an elevated two way slab that steps at 8", the top cover for both sides varies on the left side it will be 1" and on the left we would like it to be 2". my question is do I need to split the strips at the step so I…
[Error] How do I fix "Punching check not at column" error?
I have a couple of error with Punching check not at column Type. How can I fix this and what should I be looking at?
RAM CONCEPT: Strips, cracked section analysis, and One-way shear
I apologize for the long post. I am running a two way 12" non-prestressed, reinforced concrete, transfer slab in RAM Concept. I had a few questions I was hoping I could get answered.
Below are screenshots of the design strips I am using. Any general…
Precompression Failure
Hello,
I am seeing a precompression failure for my two-way slab with opening infill beams (Layers > Deign Status > Status Plan). When I go to use the Auditor tool, I do not see much information about the precompression failure (i.e., the needed precompression…
Design strip One way or two way slab
DESIGN STRIP PROBLEM.cpt I have a slab with beams only near the edge of a balcony slab, spannign between two columns. I wanted to see if it was a safe assumption to design the middle design strips as one way slab ? It seems to be failing in two way slab…
Beams in One way Slab - Column Design Strip width smaller than beam width
When running my model, I noticed I was getting column design strips widths smaller than the width of my beam. I changed my settings in the strip generation tab to column strip width calc for "Code T-beam" and checked the box "design column strip for column…
Why am I receiving this warning message (Design Strip - Strip very, very narrow)?
I am designing a two-way slab with beams, and I received a warning message shown below. I am assigning the design strips width manual with the help of Span Boundary Polyline. I used the recommendations from https://communities.bentley.com/products/ram…
RAM Concepts: Design Strips
Why is it when defining and generating design strips is there a blocked out area near supports/walls? Is this area not accounted for in the design?
RAM Concept Modeling Design Strips for PT Beams with Two-way Slab
Hi there,
I'm looking for some guidance for best practice when modeling design strips for PT Beams in both directions spanning to columns with a two-way mild reinforced slab spanning between the PT beams. My issue is when I select the "Design Column…
Slab Thickening - Avoid reinforcement required in thicker areas
Hi All,
I have a basement slab supported by pile caps of various shapes. The slab is 250mm thick, while the pile caps are 1200mm thk.
I would like to stop RAM from designing the reinforcement for bending and shear in the thicker areas (i.e. in…
3D Design Strips in RAM Concept
I have looked at the latitude cross-section perspective in my RAM concept model for an elevated floor.
I was just wondering what these gaps (shown in the photo) in the strips in the middle of the slab are? and what causes them? One example is shown…
RAM Concept High Shear Reinforcement
So I am modeling an apartment building with a very irregular layout using RAM Structural System and then using concept primarily for slab analysis and design. The goal is to design using traditional reinforcement. I think I have an acceptable design strip…
RE: Ram Concept - Generate Strips
At this point the program is determining the width of the design strips. If there are no boundary polylines and the strips are "full width", this is just a process of expanding the strips to meet to the median line. If two span segments approach a single…
Inter Cross Section Slope Limit on flanges
In checking a model recently, I found that the inter cross section slope limit does not appear to apply to the flanges of a T or L section.
Is there any particular reason that slope limit should not be applied to T or L flanges the same as its applied…
RE: Unique Condition at EOS Modeling Advice
Your approach seems sound, but conservative. If you look at the moment contours (or deflection contours) I think you will see a fairly traditional behavior a few feet from the wall supported edge. By setting up your design strips with "Design Column Strip…
RE: Reinforcement bar in midde-strip and column-stripI
Your question is rather confusing. If you are using full-width design strips in Ram Concept then the program will only report to you a single total amount of reinforcement required for the strip. The distribution of that rebar across the width of the…
RE: FULL-WIDTH STRIP OR COLUMN-MIDDLE STRIP
It's quite common in the US to use a full width design strip for post-tensioned slabs, and our tutorials are even set up that way, so I personally think there is some justification to do the same with other codes, (though not the AS 3600 code which is…
RE: Design Strips, asymmetric columns, and Program Reinforcement
First, in regard to coverage, for a Load history analysis we are expecting design strips in both directions so that the element stiffness can be adjusted bi-directionally. In a single strip, where you only have design strips in one direction you will…
RE: RAM Concept - Modelling slab folds
For each step in the slab, along the step, you have a "Z" shaped beam, and the design strip along the step should typically follow the same rules as for other beams, see this post for details: https://communities.bentley.com/products/structural/structural_analysis___design…