Looking at the interaction equation for rectangular connecting elements in AISC 360 - Equation 9-1:
Mr/Mc + (Pr/Pc)^2 + (Vr/Vc)^4 <= 1.0
Is this equation valid for axial compression loads Pr/Pc)?
I'm trying to figure out where (and if) Omega gets used when designing steel members and connections for non building structures not similar to buildings (Table 15.4-2). Does it only show up in the foundation design? A couple items for tanks and vessels are called out for section 15.7.3.a, but...
Howdy,
If a 20HP NEMA B AC induction motor has a locked rotor torque of 200% of full load torque, would a typical VFD be capable of developing that locked rotor torque condition at start up? The current is 600% of full load current at start up according to the speed vs current curve chart.
Is...
Howdy,
I'm looking at a bracing connection for some existing mining equipment structures. There is a nominal gap of 1/2" between the end of the beams and the connection to the flange of the column. Is this a common practice? Is it intended to help with manufacturability (getting the columns...
1. When designing columns with symmetric struts attached (see attachment) and assuming the tributary span A = tributary span B, do engineers still design for a shear load imbalance on the column due to fabrication imperfections?
2. When tributary span A > span B, is it reasonable to assume...
I'm looking at two brace configurations and I don't think one has greater capacity than the other. See the attachment:
Is there a reason why someone would design for style A instead of B? Does it come down to fabrication or...
When modeling a member connection to the flange of wide flange columns, do people typically make a rigid link perpendicular to the column and half the column depth to impart the moment do to connection eccentricity?
Is there literature in the AISC commentary explaining why compressive strength capacities (equation E3-1) are based on gross area rather than net area? I think if I turned some angle into swiss cheese by placing bolt holes in it, the compressive strength should be less than without bolt holes...
Is it a mistake to place the strut attachment points on the bents of a column as shown in the image instead of attaching to the beam with the vertical braces?
It seams like attaching to the vertical brace beam would minimize bending on the column but induce torsion in the web of the column. On...
Who typically designs mining conveyors and hoppers?
1. Civil Engineers
2. Civil Engineers w/ PE
3. Mechanical Engineers
4. Mechanical Engineers w/ PE
5. CAD Technicians
I'm trying to figure out if these are typically engineered, and if so, by whom. Are PE stamps...
I have 1/4" OD x 0.1258 +0.0003/-0.0003" ID X 1.00" long rollers (material spec is Delrin AF) that are attached to a peristaltic pump head via 0.1250 +.0002/-0.0000".
Occasionally (1 out of 20) roller+dowel pin combinations will provide me with a periodic chirp/squeak as the pump head turns...
What is the governing code or standard for diesel generator exhaust piping?
The application would be central utility plants (hospitals) with 2.5MW output.
