# Tag Info

23

I am not sure about this particular design. But in public places, the benches are designed to provide temporary comfort but discourage using them as a vagrant or homeless hang out, hence designed subtle discomfort. Also, they have to be easy to scan by security cameras and not have hard-to-see corners easy to hide contraband material or even explosives! ...

7

Benches are not usually engineered as such. They are being made by furniture designers, (landscape/interior) architects etc. Now generally these professions put a lot of work into making their items novel in some way (Even if that novelty feels stupid to you). Reason for this is that they are being selected that way from catalogs, trade magazines and display ...

6

In structural construction, if it doesn't matter, it is left up to the contractor to put the bolts in however makes it easier for them. If it matters for some reason (clearance, aesthetics, etc.) then there should be a note. Drawing a bolt head on the drawing and making it clear that it is not a nut and will be noticed by the contractor is hard. It is easier ...

3

In the bench that you show, the slats are supported and held in alignment by the end brackets. The armrests are supported by, and in line with, the legs. You could incorporate the end brackets into the leg structure but this would make for a more complicated moulding that either doesn't allow the same mixture of materials or has too many holes drilled in it ...

3

Yes, you are right, we ignore the axial deformations because in typical frames like multi-story structures they are of second-order magnitude compared to deformations due to bending moment and shear. Usually, the strains due to moment are in the order of 100 times more than axial strains, especially complying with the code's recommended stronger columns ...

3

Foundation's task is not just to support gravity loads, it should resist lateral loads, wind and earthquake, as well. Wind loads are dependent on the geometry of the building and seismic loads are dependent on the mass distribution throughout the buliding. For example of you will show access to the roof of your third floor container for its use as a deck, ...

2

I'm not sure about structural drafting but in "pure" science vectors going into a page are marked with an X and out of the page with a large dot. Images at bottom of page Not really an answer but couldn't post a link in the comments, either because of SE's limitations or my own

1

In general speaking, the strength reduction factor reflect the confidence on a structural element's ability to withstand a certain type of loading. It is derived statistically from both the research experiments and the past experiences; and it is based on the structural response/behavior of a certain type of material subjected to a certain type of load. In ...

1

They are called park model RVs. There are several million of them in the US. The axles and hitch can be supplied by the tow company if you don't want to move it yourself. An even closer fit would be a FEMA trailer, which are built to minimum standard specs.

1

I assume you modelled the structure in 3D structural analysis program, for such a case, if the two frames are pinned at the base of columns, but not connected on the top (two independent frames), the program shall issue a warning, because the frames are unstable in the transverse direction (pinned at the bottom, free on the top). You need to check your ...

1

An easy way is to back-calculate the S, section modulus of the beam, and its bending strength then you can verify if it will support your set of loads or any other load. $$M = S*\sigma_{b .max} = wL^2/8=1960*2^2/8 = 980lbs.ft$$ Therefore you calculate the combined moment of say n point loads P1, P2, P3...Pn separately and add their moments to check if it ...

1

The lesson to learn here is that you need to design your structure such that it matches your analytical model. Does your model have a transfer of moment between the beam and the column? Then you need to make sure that you design your beam and column such that this moment can actually be transferred. Does your model assume no transfer of moment? Well, then ...

1

What you have is like a cantilever beam supported by a post, very similar to a traffic light structure situation. your beam-column connection must be designed for the tributary moment multiplied by required factors, w = uniform load on the beam L1 and L2 are the long and short span of the beam. $$M = w*L_1^2/2-w*L_2^2/2$$ And your column and the column to ...

1

In any "static" structure composed of different members, if a bending moment develops at a certain point then connection between two members needs to be able to resist that moment. Otherwise the two members will start to rotate relative to each other. The key thing is if a bending moment develops, because depending on how the members are arranged ...

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