Questions tagged [structural-engineering]
Questions related to the integrity, design requirements, or analysis of structures.
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Beam load - bending design value of southern GC yellow pine for treehouse beam span
I'm looking to build a treehouse and wanting to ensure the support beams can carry a sufficient load over an 11-ft span. Based on page 78 (aka 83) of https://awc.org/wp-content/uploads/2021/12/AWC-...
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What does the inside of an external wall look like?
I want to be able to simulate heat transfer through a wall, and to do that I need to know what the anatomy of the wall I'm simulating is. Preferably be simple e.g 1/2 inch ply wood to 4 in of fiber ...
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Cantilever stress hotspots and making it stronger
This is a simplified 2d version of a davit arm + arch I'm trying to create for a boat.
I'm having problems with the stress hot spots from the cantilever. How can I make this stronger?
The image is the ...
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Which Timber LOK screws to reinforce shallow ridge, and how many?
I bought a tiny house shell that still needs some rafter reinforcement. I have chevron-shaped gussets from 1/2'' plywood that I'm going to glue and nail on either side of the middle gambrel joint on ...
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How to model fibre reinforced concrete on LUSAS?
As part of my dissertation, I need to cross verify my finite element analysis results using LUSAS using some experimental results, and although i can find some stress-strain relation in some articles, ...
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Meshing Complex models in abaqus
I'm trying to mesh a model of a morphing wing in Abaqus and have been running into issues. It was recommended that I partition the model into smaller parts, but it seems that the more I try to ...
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structural engineering - calculating moment & shear forces for a custom floor mounted hangman's style heavy bag stand?
I own a martial arts facility and I have a few hangman's style (single arm) heavy bag stands that a fabricator friend made for me. These will be used to hang 6' heavybags (100lbs each) attached to a ...
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How can I build a periscope window into a house, maintaining a high quality image at reasonable cost?
My family owns a plot of land on the top of a hill. AT the bottom of the hill is a lake. Between the plot and the lake is a house that completely blocks the lake view. However, it is only 10 or 15 ...
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Design a string
Consider a string with a mass attached. The string is fixed to the support above, and the mass is hanged at the other end. Is it possible to design the string for the following two cases?
The mass is ...
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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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Structural Question Regarding Moving a Post
We have a post in our living/dining room that is inconveniently placed that we would like to move a few feet. One structural engineer briefly glanced at it and said that we could move it, but I am ...
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Calculate the Euler buckling load of a column using the finite element method
I am trying to find the buckling load of following column:
I started from the system of equations $P = (K + K_g(N))U$, where $K$ is the stiffness matrix of a single 2D frame element and $K_g$ is the ...
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Timber strength in tangential and radial directions
Normally for structural timber, two values for compressive and tension strength are given. One value is given for timber in direction of the grain, and other is given at 90 degrees (perpendicular) to ...
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How is the limit state EQU used in Eurocode?
Quote from here:
Limit state EQU, dealing with static equilibrium, is defined as: Loss of static equilibrium of the structure... considered as a rigid body, where minor variations in the [actions or ...
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Tipping Point for Free Standing Wall
I work at a museum and we use weighted free standing walls to hang artwork in the center of rooms.
Could someone recommend how much weight to use inside our walls to ensure stability with the ...
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