DSB123
Was checking forces and moments(not stress) on terminal points , sometimes on small piping that is not critical I do quick checks using another program. This time I did a check and found Ceasar was off, so I checked with a third simple finite element model now I have the structural and...
I was doing some test cases with other structural programs, basically ran a pipe arrangement with 3 programs ( one of which is CII). The results of the two of the programs were very close 2-3% but the ceasar results were off by as much as 100% . Any ideas what may cause this , I have always just...
I am looking at a step over ladder used to get over a conveyor ( top of walkover 50" from grade). Walk up one side , 2 1/2 ft platform on top and walk down other side.
My concern is whether it has to be restrained from overturning. The ladder is considered portable and get moved a little along...
I am looking for some clarification on moment vs shear base connections. I typically used to treat base connections as shear and would design the base plate as such. On a more recent project we designed the base plate as a moment connection.
My question is if I design a base plate as either...
doct9960,
Not sure how my customer ended up with this arrangement, we asked the same question but didn't get a good answer. Only that manufacturing on the tank has started. Apparently their competitor uses this arrangement and they followed suit. Registration in Ontario Canada requires PE...
x x
x xyyyyyyyy
x x
x x
x x x x x yyyyyyyyyyyyyyy
My best shot at a sketch , the x are the head ( although it is actually eliptical) and the y are the nozzle
Thanks...
If anyone can give me some advice on how I can add a sketch into the forum it would be great, a picture explains it so much better.
This case the head is for an 8" pipe and the nozzle is 2" pipe.
Thanks
M1 Engineering
http://www.m1engineering.ca
Similar to Appendix L 7.7 , except 7.7 shows a hillside connection into a shell. This connection is into an eliptical head and it is not entirely in the crown radius section of the head it runs through the knuckle radius , including a little of the straight ( that fits to the cylindrical shell)...
I am reviewing a pressure vessal calculation for a customer that has a connection into an elliptical head. Rather then the nozzle coming in perpendicular to the crown of the head it is coming in at 90 degree. Example the vessal is vertical and the connection is horizontal, perpendicular to the...
Thankyou Prex and GenB for both your replies, I think I am OK now , although I believe the code could be clearer on what is considered a flanged-in manway is ( Section VIII has a sketch but they call it a flued opening).
I also agree with GenB that the calculation needs to reflect a welded ring...
I am looking for some help interpreting the required thickness of a semielipsoidal head with a manway. In the past we sized the head thickness based on a blank unstayed head and provided reinforcement for the manway opening ( Re PG-29-4)
But we were recently reviewing a new customers...
I am looking for some help interpreting the required thickness of a semielipsoidal head with a manway. In the past we sized the head thickness based on a blank unstayed head and provided reinforcement for the manway opening ( Re PG-29-4)
But we were recently reviewing a new customers...
Sir Adam Beck Station (Niagara Falls) has a similar pump generating station. The same turbine operates as a pump at night pumping water from the headgates of Beck II to a resoirvoir above. During the day the power can be generated as the water flows from the resoirvoir and there is also...
"should I tell them I am looking before actually getting another job?"
Tough question of which I have mixed feelings about:
1)When I first finished community college I got a job as a draftsperson but decided I wanted more and applied to university. As soon as I was accepted I told my employer...
I am in Ontario Canada and we are slow and have been slow since the New Year. Many of my customers are slow but there do seem to be some areas that are booming.
M1 Engineering
m1engineering.ca
For what it is worth the following is my experience with the design of casing at elevated temperature:
1) Up to 800 to 850F use carbon steel
2) In the range of 800 to 1000F use carbon steel or alloy steel based on economics steel cost weight customer preference etc
3) Above 1000 F alloy steel...
Generally carbon steel would not be used for any critical application above 750F. Having said this I have seen A36 casing used for up to 1000F but a greatly reduced allowable stress as creep rupture becomes an issue over 750F. ie at 850F the allowable for A36 is about 1/3 of the cold strength...
