Hi, All
I just added a tutorial video on how to interpret the Transfer Force or Pass Through Force in steel brace connection
You can check out the tutorial video at https://youtu.be/VDbLmzlD42A
You can download the PDF working sheet at...
thread507-482137
Hi, All
I am the author and owner of CivilBay AISC Steel Connection Design Software referenced in the above thread of discussion.
I created a couple tutorial videos to show you how this program can help with your steel connection design.
You can visit these tutorial videos...
Idler sits on stringer, stringer sits on truss node point transverse beam
Pulley are heavy and dynamic impact so it's critical. Depending on what pulley, if it's drive pulley, the belt tension is huge and you need special heavy duty diagonal support.
If it's bend pulley and belt tension is not...
That's correct. We call the truss housing conveyor as "gallery". A typical gallery section contains the conveyor stringer with carry idler/belt above, return idler/belt below,
36" wide walkway both sides for maintenance, and a cable tray hung under the roof.
Best tool to design steel...
The bent get wider when going down because we need larger lever arm to reduce uplift due to over turn moment. See sketch below
Not at all and provide what is needed to save the steel cost, see those tapper section frame in steel building?
All pin in both directions. At the direction...
Bents are not stable in longitudinal direction if they lose linking trusses, but what I am talking is not about this topic. What I am talking about is the "Lateral Resistance System" when you design a structure, in another word you have to think about how the lateral loads, wind, seismic, belt...
We live in Canada, northern neighbor of US.
We have more than six months winter in a year and the lowest temperature in the north site could reach -40~-50 degree or -58 to -76 Fahrenheit
Frost upheave and adfreeze is a common issue we should tackle with in most foundation engineering works...
Some recommendation is to replace the cohesive soil completely with frost stable granular fill to avoid frost upheave, but that replacement cost is normally very high.
The key point here is the *rotating equipment* foundation which need the dynamic analysis to avoid resonance and keep...
For heavy rotating equipment foundation, the answer is NO. You have to go below frost depth. The cost of repair and damage is very high as the rotating equipment normally has very high tolerance requirement.
For non-critical structure foundation such as walkway or light pole etc, the answer is...
For the same connections, they behave the same way when it's in truss or in some where else.
I don't see any reason why UFM is not used in truss connections.
UFM is needed when eb and ec are significant, such cases as gusset connects to w shape flange where eb or ec = 0.5d
UFM is still...
Truss Pin/Hinge Support at top of bent
We don't do roller support. What we did is the cantilever at the last bent and allow it to expand.
Last bent to be cantilever and allow it to expand freely
We normally design the bent as panel, not tower, and all longitudinal force go to drive...
Agreed. All gallery truss should be designed as simply supported. Continuous span is not recommended.
AISC Steel Connection Design Software
http://asp.civilbay.com/connect
Your truss vertical brace is not optimized. You should re-arrange the vertical brace so that they are only tension brace and it will end up with small member size and saving steel.
AISC Steel Connection Design Software
http://asp.civilbay.com/connect
It's an end plate pin connection.
In reality there is no 100% PIN or MC. It's always something in between, but closer to PIN or MC.
AISC Steel Connection Design Software
http://asp.civilbay.com/connect
In terms of Structural optimization:
1) Get braces as all tension brace if possible
2) Get hor load transfer to foundation in the shortest path
AISC Steel Connection Design Software
http://asp.civilbay.com/connect
When do the moment connection, the axial compression force of beam can be ignored.
For your case, decompose your inclined beam axial compression to a normal compression to column and shear force component,
ignore the normal compression component, add the shear component to the existing shear...
>> the only charts found in the commentaries that aren't part of volume 1 of the 2015 code is I-15 through I-34 (except I18 which is included).
Starting from NBC2015, some charts and tables are moved to part 4, but many useful ones are still in commentary user guide
What I am saying before is...
I would say for wind load design most charts are still in the commentary.
The climate data, wind pressure, snow and seismic data are in Appendix C.
AISC Steel Connection Design Software
http://asp.civilbay.com/connect
>> the next revision of the National Building Code of Canada has moved all of the necessary wind diagrams into the body of the code
That's not true. In latest NBCC2015 there is still commentary.
I use NBCC/ABC everyday so below is the facts on NBCC/ABC.
1. Canada national wide release NBCC...
10 kips capacity = 5 ton, it's almost like a monorail, don't worry that much
For a 5 ton crane, you don't need pay that much attention. I have PE down the US purchased my program doing 100 Ton crane, or stacker crane which has 200% of lift load as side thrust (normal crane is just 20%).
In...
