Engineering Stack Exchange
Engineering Stack Exchange

Questions tagged [structures]

Questions relating to or the engineering application of a device that must withstand a loading via deflection, stresses, resistance to buckling, or natural frequencies.

271 questions
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How to calculate deflection of a simple beam with a load in the center?

Given this type of arrangement: - image by Hermanoere Where the beam is of rectangular cross-section. I am specifically thinking of a wooden beam where I can look up some material characteristics (e.g. modulus of elasticity) from places such as…
RedGrittyBrick
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Siding for Industrial Shed: Rain protection vs Ventilation

When building a 12 m tall industrial shed with a peaked roof it is desirable that the sides of the shed should stay open as much as possible for ventilation / safety / access concerns. On the other hand, an entirely open side from top to bottom…
curious_cat
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What loads does the safety factor apply for?

As is well known, a safety factor is often applied for engineering structures as a measure of precaution. I would like to ask for which loads (if not all) does the safety factor apply for. For instance, take an aircraft wing. The safety factor will…
aerodokuu
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Calculate mobile base weight to support adjustable arm

I want to calculate how heavy a mobile hydraulic post table base must be to support an adjustable monitor arm and monitor. Monitor (iMac) Specs: Height: 20.3 inches (51.6 cm) Width: 25.6 inches (65.0 cm) Weight: 30 pounds (9.54 kg) Mobile…
Philip Michael
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Pin support, why is there no horizontal reaction force?

I am trying to understand this problem: If we break down the 10T, they behave like this: The right end of the beam can move as much as it wants, but the left end is pinned. Why is there no horizontal reaction at A, if there is a horizontal part of…
UniversidadDeSevillaEsBasura
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How should I position two shelf supports for the minimum deflection?

The above is the shelf that I'm intending to put up. It will have two symmetrically placed supports. This is probably a simple question that really should be answered in all DIY shops but... Assuming a uniformly distributed load across the entire…
Paul Uszak
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Transmitting load to a fixed support of a structure

In structural optimization, we try to design our structure in a way to sustain loads in the best way possible. An example could be thinking about transmitting loads to fixed supports in an optimal way. I am thinking of the instant when a load…
user134613
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Structure Grid for a building with irregular shape

I am making a building block with the shape as outlined in yellow in the attached capture, as for the structure I am not sure how to place the loadbearing poles and I could use some help
DADA
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Flat slab main bar direction longer or shorter

In flat slab system, say that the total length is 48m x 24m, column with drop panel with spacing of 6m... In this case , main bar outermost top bar (T1) and outermost bottom bar (B1) should be parallel to the 24m , right? I came across an example…
gx6336
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Force that a surface made of stretch film can sustain

I need to estimate the static spread force (Newton) that a plastic wrap wound around a given square frame (1 sq meter) can sustain. The stretch film has a given thickness (eg 17 microns ~ 63 gauge) and I have found a table that gives a weight that a…
ChewingGumExpert
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reaction of structure

all is this sturcture stable ? or structural determinate ? Let the top support as A , bottom support as B , By taking moment about A, i managed to get 10(4*4)/2 -HA(2) = 0 , HA = 40kN, HA = HB = 40kN , By taking moment about C , i managed to get…
gx6336
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Optimal method of attaching commercially-available heavy bag mount to finished ceiling with least risk of structural damage

Admittedly, this question is related to an earlier one on the same subject. I would like to mount a heavy bag using a system detailed in the attached picture (FirstLaw Fitness Shock Mount). The system is designed to be mounted between and directly…
Steve H
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Is a bridge more stable on concrete or soil?

I understand that foundations are used in structures to support and spread the weight of the bridge over a large area. However I am struggling to understand why certain materials such as concrete are used in foundations over others. My first…
IK-_-IK
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How are these components called?

I need to build a structure like the one in the picture below. Basically, it is a pendulum that holds a measurement hammer and lets it oscillate without friction. I don't know how to find the two necessary components (the one that holds the hammer…
firion
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Shear connections

Question: which of the three shear connections (beam/column) below will require diagonal bracing?
San
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