Will My DIY Pipe Shelving Be Stable Enough?

  • Thread starter Thread starter brnlow
  • Start date Start date
  • Tags Tags
    Stable Structure
AI Thread Summary
The DIY pipe shelving design consists of a two-shelf system using 3/4" pipe and fittings, with shelves positioned 180 degrees apart around a central pole. The pole will be bolted to a plywood base, and each shelf is intended to hold between 5 and 100 lbs. Stability concerns are raised, particularly regarding the need for the base to extend beyond the shelves for adequate support. Additionally, there are suggestions to incorporate bracing to prevent torsion and enhance overall stability. Ensuring proper design and support is crucial for the shelving's stability.
brnlow
Messages
1
Reaction score
0
I plan on building shelving using 3/4" pipe and fittings. The general design is a 2 shelf system -180 degrees from each other around a center pole at different heights. I plan on bolting the center pole to a plywood base. Each shelf will hold between 5 and 100 lbs. I want to make sure its stable. I think as long as the base extends longer than the shelves on each side I should be ok - am I right. Attached is a basic concept.
 

Attachments

  • shelf concept.jpg
    shelf concept.jpg
    12.5 KB · Views: 433
Physics news on Phys.org
brnlow said:
I think as long as the base extends longer than the shelves on each side I should be ok - am I right.

Yes you are right. You might think about extending the base a bit on the side of the tallest shelf to improve stability against larger disturbances.

Torquil
 
brnlow said:
I plan on building shelving using 3/4" pipe and fittings. The general design is a 2 shelf system -180 degrees from each other around a center pole at different heights. I plan on bolting the center pole to a plywood base. Each shelf will hold between 5 and 100 lbs. I want to make sure its stable. I think as long as the base extends longer than the shelves on each side I should be ok - am I right. Attached is a basic concept.

I'm not convinced- there's no bracing against torsion, for example- either for the pole or the shelves.
 
Thread 'Gauss' law seems to imply instantaneous electric field propagation'
Imagine a charged sphere at the origin connected through an open switch to a vertical grounded wire. We wish to find an expression for the horizontal component of the electric field at a distance ##\mathbf{r}## from the sphere as it discharges. By using the Lorenz gauge condition: $$\nabla \cdot \mathbf{A} + \frac{1}{c^2}\frac{\partial \phi}{\partial t}=0\tag{1}$$ we find the following retarded solutions to the Maxwell equations If we assume that...
Maxwell’s equations imply the following wave equation for the electric field $$\nabla^2\mathbf{E}-\frac{1}{c^2}\frac{\partial^2\mathbf{E}}{\partial t^2} = \frac{1}{\varepsilon_0}\nabla\rho+\mu_0\frac{\partial\mathbf J}{\partial t}.\tag{1}$$ I wonder if eqn.##(1)## can be split into the following transverse part $$\nabla^2\mathbf{E}_T-\frac{1}{c^2}\frac{\partial^2\mathbf{E}_T}{\partial t^2} = \mu_0\frac{\partial\mathbf{J}_T}{\partial t}\tag{2}$$ and longitudinal part...
Thread 'Recovering Hamilton's Equations from Poisson brackets'
The issue : Let me start by copying and pasting the relevant passage from the text, thanks to modern day methods of computing. The trouble is, in equation (4.79), it completely ignores the partial derivative of ##q_i## with respect to time, i.e. it puts ##\partial q_i/\partial t=0##. But ##q_i## is a dynamical variable of ##t##, or ##q_i(t)##. In the derivation of Hamilton's equations from the Hamiltonian, viz. ##H = p_i \dot q_i-L##, nowhere did we assume that ##\partial q_i/\partial...

Similar threads

Replies
2
Views
6K
Replies
7
Views
2K
Replies
10
Views
2K
Replies
3
Views
5K
Replies
21
Views
10K
Replies
3
Views
2K
Back
Top