I have inherited (new job) a fairly large ventilation fan system that has two fans -- I'll refer to them as Fan 1 & Fan 2. They operate one at a time and are dampered out when not in operation.
Fan 1 -- I consider a good installation and Fan 2 -- I believe is a poor installation.
I have basic...
I am not responsible for the design of the stack.
I got involved due to an 'odd' installation methodology.
Since then a lot of discussion has been had about several characteristics of the stack design, anchor rods, etc.
I have researched ASME STS-1, SMACNA Guide for Steel Stack Construction...
I've had several discussions relative to calculating nominal concrete breakout strength in shear of a group of anchors using Eq (D-22) using the 2005 edition.
I have also read many threads here.
Is there a limit relative to edge distance after which there is no need to use the concrete breakout...
What code applies to a pneumatic conveyor systems cyclone separator (aka impingement tank). ASME B&PV specifically excludes separators and 15psi and below. Anyone got an idea?
One of the places that this is going to is-- what code would be used to weld AR plate with a strength greater than...
While in a discussion regarding the analysis of some portable skids that will be lifted with a crane (about 8ft X 30ft) the subject of "hoisting loads" was mentioned. While the hoisting should be performed in a "smooth and consistent manner" it seems logical that a "dynamic load" will be...
Attempting to determine the maximum flowrate that can pass through the annulus created when a 2 1/2 inch SCH40 pipe is placed inside a 4 inch SCH40 pipe 16 feet long in a vertical orientation. The 4 inch pipe is connected to a box that normally feeds the flow down another tube that is inside...
I am in the process of verifying some structural calculations performed by an outside organization for a client.
The specified codes are 1997 UBC, ASCE 7, AISC, etc. I remember the factor of safety relative to sliding and overturning is 1.5, however I have not been able to substantiate that...
I am a Mechanical Engineer with experience in the design and analysis of steel structures. A recent job change is placing demands for concrete knowledge on me that I don't have at the moment. I am looking for a good reference(s) as a "jumping off point" to learn more about concrete...
Are any of you using AG1?
I am running into difficulties with this code/standard and would like some help/clarification regarding the determination of stress due to NOPD (normal operating pressure differential)...
Hello All!
I'm currently working on the analysis of a ductwork system that requires the calculation of the stress due to NOPD (normal operating pressure differential).
Some of this ductwork is on the order of 60"x60"x11ga and has fairly high "negative pressure" which is on...
I am currently working on an HVAC duct analysis for a nuclear waste treatment facility. The duct is to be analyzed per ASME AG-1 which includes in some load combinations a "Fluid Momentum Load" or "FML". ASME AG-1 Section AA-4211 define this as:
loads other than those...
I am currently working on an HVAC duct analysis for a nuclear waste treatment facility. The duct is to be analyzed per ASME AG-1 which includes in some load combinations a "Fluid Momentum Load" or "FML". ASME AG-1 Section AA-4211 define this as:
loads other than those...
Currently analyzing an HVAC duct system in a nuclear facility (nuke waste) and curious if there is a standard method of determining the type/strength of supports.
Also, do typical HVAC supports restrain motion in the three orhtographic directions or do they restrain the moments about these axes...
I am currently working on an analysis for a HVAC duct system in a nuclear facility. The analysis is necessary to determine what type/strength of supports are necessary in the system as well as determining the deflections at various connections to this system. The system has a temperature...
I have been involved with weld analysis and specification for a short while. It seems that the more that I study AWS D1.1 the more confusing it gets! Does anyone recommend a/some course/courses that will help to eliminate the confusion or shed light on D1.1?
I will be buying a house that comes with a hot tub soon. A co-worker mentioned a chlorine generator type treatment system (I previously had no idea that one existed). I looked these systems up on the internet and there are several available commercially, but are quite spendy. I was wondering...
Can someone point me in the correct direction of a national or state (I'm in Washington) reference of one sort or another that would answer the question, "What is the acceptable temperature range in an office building?"?
ASHRAE, OSHA, WISHA, etc. are ok
Trying to settle a dispute and...
According to AISC info the section properties for "TUBE STEEL" are exagerated and should be replaced with those for "HOLLOW STRUCTURAL SECTIONS" due to rolling mills approaching the minimum tolerances.
Can someone tell me when and in what referenceable document this...
