# Tag Info

### Convention for describing infrastructure: From south & west to north & east

There is no rigid rule but driven by the purpose of mentioning these streets: Describe a street location and bearing - Willington St. is an east-west street, bounded by Portland ST. on the east, and ...
• 7,618

### Any way to approximate effect of two point loads with just one?

Seems like you're after statically equivalent nodal loads. There's two things at play here: Load equivalency: the total of your equivalent loads will be 4P (sum of all loads), and Displacement ...
• 61

### Why supposedly stress can't be MEASURED unlike strain?

This is probably a technicality from the fact that all common ways to measure forces depend on things like strain gauges as you pointed out. Other ways to measure forces are springs (as in scales) ...
• 76

### Confusion with the definition of Principal Stress

The definition on your textbook is almost correct. It's totally correct in $2D$, but in $3D$ it should read something like "the principal stresses include the minimum and maximum normal stresses. ...
• 76

### How can I eliminate oscillations in Sim-Routing for HydroCAD?

Having tailwater dependencies does not necessarily mean that you have reversing flows. So I suggest that you start with DSI routing, and normal outlets going in the "downstream" direction. ...

### Is there a method to determine the runoff for arid areas in developing countries?

There is something wrong here... a catchement area of max 200 hectares...and only 10 000 cubic meters? 1ha is 10 000 square meters (100x100 meters) so 200 ha is 2 000 000 square meters which makes the ...
1 vote

### How to derive the equation for fixed-pinned beam?

A slightly more convoluted (but completely general) procedure is to work out the differential equations given by Euler-Bernoulli beam theory. The first step is to replace all unknown reactions (the ...
• 76
1 vote

### Why supposedly stress can't be MEASURED unlike strain?

I don't think the statement is correct as both are measurable with conversion. You should check out "Load Cell Sensors" and "Strain Gauge Load Cell Sensors" (for both force/stress ...
• 7,618

### Why supposedly stress can't be MEASURED unlike strain?

Turning strain to stress requires an equation, and also knowing where you are on the stress-strain curve. There isn't a device like a strain gauge to directly measure stress. But if I know the force, ...
• 4,810
1 vote

### Ship Stability And Overturning Moment

There is a good analogy with balance boards. When the radius of the board bottom is greater than the height of your center of mass, all you have to do to keep the balance is to stay still (metacenter ...