Questions tagged [structural-engineering]
Questions related to the integrity, design requirements, or analysis of structures.
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Some questions about linear rail systems
there are many linear rail system configurations. Some with only one lead/ball screw in the middle and a moving platform with wheels aligning outside/inside/on top of one/two framing rail(s). Others ...
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Calculating the maximum force on a large cantilevered round steel bar that is used to support a tree house
Hi all and thanks for this page.
I have constructed a large treehouse across two trees. The main support is provided by passing a very large 57mm dia high tensile steel bolt through each tree. Each ...
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How do I find the pitch for the fly press?
To solve the problem first I need to find the pitch of the screw to find the shearing stress, is the stroke 45 degrees per 5.75mm or 90 degrees per 5.75 mm?
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Is overpressure really an appropriate criteria for blast damage?
So, I went on Nukemap, and they gave me the following values for blast effects.
1 psi (7 kPa): windows break
5 psi (34 kPa): most residential buildings collapse
These numbers are way too high. 1 psi ...
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How did gothic church architects/builders properly scale up their models to full size churches?
In this video the author explains how ancient church builders used models to determine the proper shape and order of installation of architectural elements in gothic churches.
From the little I know, ...
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Are there structural (or code) reasons for choosing longer or shorter beam spans (besides bending moments, and ignoring cosmetics)?
When selecting the length of beams for a bridge, the better approach is to choose multiple full-length beams.
Unless there is a compelling reason, one would not choose multiple shorter spans.
An ...
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Can someone help explain the difference between strength and stiffness?
I just can't seem to get it through my head and I don't understand the difference. As far as I can understand, strength is a materials resistance to permanent fracture while stiffness would be ...
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Belt conveyor roller spring
I wanted to know if anyone could help in this area.
I want to create an inclined conveyor belt where, when a cargo box reaches the top of the conveyor belt, the rollers sequentially move down (maybe ...
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Mass Brick Settling Causing Excess Load On Center Beam
I live in a 115+ YO building and recently had my kitchen remodelled. During this the subfloor was replaced (old 1x6s in bad shape). I noticed a significant bow in the joists with the central steel ...
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Need to find beam deflection of a steel tube
So I have a square tube of 40mm, 3mm wall thickness with a length of 1 meter. Both ends are fixed 25mm inwards. Load is 3kg centerpoint. Steel is SJ235.
I need to know the deflection of this beam.
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what are the compression forces in a strut if the strut is fixed
i am trying to match an experiment i have done and i dont know how to compute the force in the strut in terms of F given these boundary conditions. i have attempted to use fixed end moment equations ...
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Setting direction vectors for Lines in ANSYS APDL
I am using beam elements to mesh lines with "pre-meshed" shell areas. Problem is that the ANSYS sets Line Direction vectors on its own.
This results in Cross sections assignment flipped from ...
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Antenna Design Problem
I'm designing a 10'L x 10'W x 200'H end fed with a capacitance hat, that extends 4' out.
The base will be chain cradle support.
Here's what it might mean.
The base of the tower is 1' off the ground. ...
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Finding zero-force members of truss system
My instructor gave the below example for identifying zero force members in truss. The members marked with the green zeros are the zero-force members, according to his solutions.
I cannot understand ...
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Strength of aluminium plate
I need to make a new outboard engine mounting plate, as I have just purchased and larger HP engine. My current plate is made of 12mm thick aluminium plate. I am having problems buying a cut to size ...
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