I have a question regarding the bolt tightening in the freezing condition. The connections are not slip critical, so the bolts in the steel structure is going to be snug tight, but the construction is located in an area that is going to be a freezer. Should the bolt tightening to be checked...
I need to approve an industrial steel mezzanine structure with 1.1 meter height. It is only a 10 square meter mezzanine that is intended to be used as an access point to another structure. It is a self standing structure, but they have not used sort of the bracing. I was wondering if we can skip...
I am designing a cold-formed structure on which there is a vacuum pump is going to be mounted. The motor data is as follows:
rotation speed= 2000 min^-1
noise characteristic= 86 dB
Vibration characteristic= 20 µm
From the rotation speed, I can say the frequency is about 2000/60= 33 Hz. I am...
In a project, they made a mistake in installing a mezzanine and the whole structure is shifted. Since the columns are not matching the location of the foundation pads any more, the foundation does not fulfil. Could someone please advise a solution for it?
The foundation is built, and the...
@Kootk, thank you very much for your detailed explanations, it helps me a lot.
@jayrod12 and Kuhladula, thank you for the details, they gave me some insights.
@dik, sure that's a good idea to prevent torsion
@rb1957 the thickness is 3 mm with 85 mm width. The static load from a hanging person...
There is structure in which they are going to use it as a training for professional climbers. The structure is a cold-formed mezzanine with C sections. They are going to connect their clamps to the bottom flange of the C-sections. The point load is about 6 kN which can be carried by the...
I have a handrail post which is connected via a welded plate. I wonder if I am calculating the weld stress correctly. Could someone please correct me if I am wrong? The load and dimensions are shown in the picture. The post is a SHS section...
Thank you for your answers. The base plate is for a mezzanine with a relatively high load (The column pressure is about 110 kN). Since all the members are produced based on their certain length it was really hard to move the column layout. But shifting the column position seems the only way to...
Due to a mistake, a base plate (with post-installed anchors) is placed on a concrete expansion joint (the expansion joint is exactly crossed the base plate). I want to check if the anchors are still fulfilled. I think I need to assume the expansion joint as the edge of the concrete and calculate...
Hi,
I would like to ask for a bit of advice on a connection design. We usually use this connection for the double c-sections to connect the beams to the column
But now there is a special situation for a project that we need to put the beams face to face like this
Could anyone suggest a...
Hello everyone
I am looking for a tool that can calculate the effective cross-section of a cold-formed section. Do you have any suggestions for it?
I found some software, but I am looking for a free software/spreadsheet since I just need to check a few sections with it!
Thank you very much jaskamakkara. Yes, exactly! That is also my other discussion with the customer. In the structural calculation report, it is clear that the columns are considered as hinge connection, however, the concrete layer definitely changes this assumption.
Hello everyone,
I have a project in which the customer wants to pour extra concrete (300mm) later on for flooring etc. The structural columns are HSS sections and they have a galvanized coat on it, but I am still worried about the corrosion of steel especially in the first stages of concrete! Do...
Hi all,
I am checking a calculation for a connection. The column is HSS profile and the beam is a cold-formed C-section, and they are connected via a plate with bolts. In the report, it is stated that the value "S" should be at least 2.5*t2. It makes sense to have a limit here because of the...
Thank you all for the information and feedback. I think the moisture is not really an issue at least for this structure since it is a mezzanine inside a factory and it is served as a storage space (not chemical nor wet materials packages etc...).
Thank you for your response. Yes, it is connected to the flanges of the beams by bolts, so that is why I also think it can provide enough support against the torsion of the flange. Then I can calculate the buckling of the bottom flange (which is probably in tension, and I guess the reduction...
Hi all,
I am calculating a mezzanine with cold-formed sections. The floor is a particle board with 38 mm thickness, and it is connected to the beams. I think the particle board can prevent the top flange of the secondary beam to buckle, but I cannot find any supporting clause in any standard...
