[Concrete Box Culvert Design Software
Christel Malden
Learn how to model, analyze, and design check reinforced concrete culvert bridge. Design new reinforced concrete culverts and extensions to existing culverts are subjected to either earth fill and/or highway vehicle loading in accordance with the AASHTO LRFD Bridge Design Specifications. Precast concrete box culvert will be used in this design tutorial.
Design new reinforced concrete culverts and extensions to existing culverts subjected to either earth fill and/or highway vehicle loading in accordance with the AASHTO LRFD Bridge Design Specifications. Precast concrete box culvert will be used in this design tutorial.
The Concrete Pipe Design Manual is an indispensable tool to help engineers select the type, size, and strength requirements of pipe. It eliminates the lengthy computations and includes standard installations using the indirect design method. More than 330 pages of tables and figures covering hydraulics of sewers and culverts, live loads and earth loads, supporting strengths and supplemental design data are listed. Detailed example problems of specific applications illustrate the use of the time saving design aids included in the manual.
I have another question regarding the wing wall on the same culvert design I am working on. I am trying to figure out how to have the existing contour end at the wing walls. I would also like the have creek be aligned to the new culvert.
Try a corridor on each side of the road to regrade the ditch to align it to the new box culvert or use a feature line with a grading on the outer face of the headwall. I generally use two corridors for a ditch like this because corridors don't always like being split around culverts.
I added the blue lines as break lines to the combined surface at the lowest elevation of the wing walls (I am not sure if that was correct or if I should have added them at the highest elevation of the wing wall). No changes happened when I did this.
The reason I did this was because I did not like the way the contour look on the purple and yellow circles. The look sorta okay but it needs some more work to get the creek to go through the culvert. The purple circles are the worst those contours should crash and end at the wing wall but they continue right through it like it is not there.
So for your comment cwr I am not sure what the corridor will do for me that is why I am showing you more in depth of what I did to see if it still applies and if it does can you please elaborate on it more.
Yes, two new corridor do realign the ditch. It is possible to do with gradings but I prefer to avoid them if possible due to their inherent instability. Using feature lines as width targets for the bottom will allow you to match the existing ditch and widen the ditch as it approaches the culvert. Since it is not a paved ditch generic links should offer all the functionality needed.
Any recommendations on assemblies for ditches I tried making my own assembly with sub-assemblies and it doesn't seem to do what I want? I was browsing through the tool pallet and the only way I see to make a ditch is start with NULL Assembly and then use a daylight general sub assembly but that doesn't seem to work, any other suggestions?
Create a new assembly (from the corridor menu) use generic link subassemblies (width and slope, slope to surface, offset on surface, etc.) to establish the shape you want for the ditch. The ditch and daylight subassemblies are geared to being part of a larger road assembly, generic subassemblies are more suited to small stuff.
OK I added the corridors like you mentioned and still did not make the contours like I wanted. I even add a wall break-line to possibly fix how the contours collide and go through the wall but no change in what I want.
I am going to attach a Dropbox link to my file if you have time or don't mind taking a look at it to see if anything crazy stands out to you that might be wrong that would be a great help. If not I understand we all have very busy work schedules.
I have not had time to look at your file (will look later if I can), but I have one nugget of advice. It looks like your corridor is in the limits of what you want. (hard to tell w/o looking at sections). Have you been editing your surface directly? Sometimes I find combining both the corridor and surface edits can make things worse rather than better. I almost always add a few tweaks to the surface once I am 95% done.
ok thank you still have been trying different things got a little closer I think but still not exactly what I want. I also have been talking with the one guy that taught the civil 3d class I took and he also has been helping when he can.
I may do a few face-flips to get the contours to do what I want, and will sometimes add a surface smooth edit (for the same reason). I end up doing this particularly in areas where the corridor is 'bow-tieing'.
Finally got a chance to look. Had to do some guess work on feature line elevations, but for example purposes it should be good enough. Also I drew the feature lines as straight lines, you can curve or segment (horizontal and vertical) them to get more of what you want
I think this is more like what you need to do to get what you want (north side of culvert). Remember, to build a headwall they will rip a huge hole in the creek, you need to regrade the channel completely (say 10 feet or more out from the wall).
In short, trying to do this with a corridor, in my opinion, is making a mountain out of a mole hill, so to speak. You could build the walls with simple feature lines, relatively quickly. If you have a corridor surface, pasted into a 'final grade' surface, split that region, so you can turn the corridor daylighting off, add the breaklines for the wall into the 'Final Grade' surface would take care of it. (This brief reply is not doing the subject justice, and I apologize for that. I will try to do it in your file and repost, later.)
Eriksson Culvert is the most advanced engineering software for precast and cast-in-place box culverts, seamlessly combining the functionality of a state-of-the-art structural analysis engine with fully automatic design and analysis capabilities. Integration of the critical design tasks into one system means you get superior productivity and flexibility with improved quality control.
In auto design mode, Eriksson Culvert quickly analyzes and designs wall thicknesses and reinforcement sizes and spacing. A comprehensive reinforcement schedule containing rebar and mesh is produced, complete with all bar dimensions and bends. LRFD, Standard, AREMA, and CHBDC specifications are supported, as well as, both US customary and metric units.
The highly graphical user interface provides multiple views to render the design and present the results. Complete details of the design along with detailed calculations are provided. Powerful graphics show all reinforcement rendered in true 3D and a user-customizable truck library is included in the sophisticated live load capabilities.
Eriksson Culvert is an update to ETCulvert with new features and enhanced functionality: a direct result of feedback from our users. In addition to new features, Eriksson Culvert transitions to a web based subscription similar to our Pipe, Beam, and Wall products. We no longer charge a yearly maintenance fee; we now charge a yearly fee for a subscription to our software, which includes full technical support and all updates.
Software can be installed on a server. The license server keeps track of how many licenses are in use at one time. When an application using network licensing starts, it first checks to see if a network license is available to use. If so, a license is then checked out from the pool of licenses. When a user exits the application, the license gets checked back into the pool making it available to other users.
The alternative to precast concrete pipe is the building block of underground infrastructure called the box culvert. They are essentially the Lego of modern precast structures and simply snap together for easy installation.
As an all-weather sealant, box culvert manufacturers and the contractors who install them can have greater reassurance that the sealant will perform better in cold or hot weather climates unlike the mastic or blended materials.
For a quick and easy solution for filling box culvert joints, look to our cellular joint filler to get the job done faster. The varying sizes and shapes for soil and silt tight applications meeting ASTM D 1056 means you get the job done right and quicker the first time.
Box culverts shall be analyzed and designed as rigid frames. All standard box culverts shall include bottom slabs. For box culverts built on solid rock, a nonstandard box culvert without a bottom slab should be considered.
For culvert extensions, use the current design method as described herein regardless of what design method was used for the existing culvert. Match opening dimensions of new extension with those of the existing culvert when possible. Otherwise use larger opening dimensions. For cutting details of the existing culvert, see Standard Plan 703.38.
Details of standard box culverts are available in Missouri Standard Plans for Highway Construction. See EPG 750.7.4.1 Standard Plans for an index to the Box Culvert Standard Plans and a table showing the Standard Box Culvert Sizes. A typical box culvert is shown in Figure 751.8.1.2.1. In this figure, a cut section is defined as the section between two transverse joints.
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