Search results for query: *

Wow! Doesn't anyone have any comments to my questions? Has anybody ever designed very tall buildings? Am I in the right forum?? Genieconseil

Hi All, I'm in the process of designing a 50 storey residential building. My question is the following: How do I control the stack effect in the top of the stairwells and on the top of elevator shafts? I was thinking of installing a releif mortorised damper at the top controled with by a...

I have a dossier where I have an unballanced ventilation syst. Where the évacuation is twice the amount of cfm than is supplied for air compensation. This is in a 7 story condo project, dating from 2006. the central evac fans for the dryers and toilets and kitchen hoods are seperate as per code...

As a practicing mechanical engineer since 25 yrs in Québec, Canada (same type of climate), the first step is to communicate with the manufacturer and get heat dissapation of the controls, transformer and motor (in BTU) and average operational temperature (30 Celcius is usually a good set...

Wow 317069 Nice handle by the way... I don't know about your origins but first of all canada is composed of provinces not providences. Secondly for my province which is Quebec, very very few engineers (you could count them on your hands) have the the competence and right given by the Order of...

That is exactly my stand I'm sticking to my 24000btu syst. Thanks all for your input I enjoy the camaraderie and the exchange we have in this community, it is very informative I would even classify this as a form of continuing education. Cheers Genieconseil

Like i said local codes will overide international code such is he case in canada Genieconseil

I do agree with you that this the solution but as a mechanical i'm not the one controling this part of the construction. Genieconseil

I agree with you Herr happ or trace are both good software the diff is with the input of the user. As you say it is important to input manually the thermal resistance of the envelope assembly supplied to you by the architect he is responsible of the wall assembly and consquently the R value. By...

Exhaust NOx has to go outside thats a no brainer. But the heat dissipated from the the cooling of the alternator can be rejected to the garage cause it is non toxic hot air and obviously the cooling air can also be taken from the garage. But if the generator is used for life protection such as...

Herr. Thank you for your answer. But reality is that even the best built building will suffer from bad execution from the workers and that will pass unoticed during inspection. So the problem is that because of this infiltration in the winter especially is critical and therefore creates...

LoL. Cry 22 Tu as bien piquer mon orgeuil. No harm done. Cheers Adnan86 for which country is your inquirery for? The reason i ask is that you are refering to the international building code! Is there not a local national building code in the country where your project is like canada...

Lol. Cry22. Thanks for the bashing very profesional and constructive on your part. You dont know me! i have been designing residential tours since 1990 and i am a mechanical/electrical and civil engineer one of very few engineers that has gotten the right to practice in these feilds by he order...

in canada a tall building is defined by the NBC 2005 as a building that is 18m in hight measured from the average ground landscape level to the floor level of the last floor and for a very tall building as being 36 m tall. that being said the stairwell does not have to be mechanically...

Need help here. this subject is treated vaguely covered in ASHAE manuals. I need some concrete solutions to counter this phenomenon. I can calculate the pressure diff. But what to do to counter it is not clear. Did some research on google but not much info. In my cases it is usually condo hi...

I am a practicing engineer for the last 24 yrs. in Montreal, Quebec. Canada I see a lot of contradictions, but concerning the tightness of buildings,(in montreal we seal the exterior with 1½'' of urethane (insulation) I agree with that is why we have to bring in fresh air cause there is very...

hi HerrKaLeun Thanks for your quick response. As i mentionned in my post they have same suface values for the windows and walls and same U values ans shgc for windows, desitybof buildin, color of roof and envelope, as for infiltration this result does not figure in there 19000 btu result. I have...

Hi all, i'm a mec eng. From quebec Canada. I've a bit of a conflict with an other engineer concerning internal heat loads to condider equipment and people load. I add a load of 2 people at 230btu/hr for a two bedroom (which i think is negligable but i add it anyway) and 600 btu/hr for various...

I totally agree with measuring seperately and that was my first comment to my client but it is not the case at the moment and before he can accurately differentiate he will have to measure for a year, this is obvious. But he needs to get a good approximation now and only two methods exist which...

Thanks, I'm glad and greatfull to see such response to my problem. But first of all to clear things the 2 air make up units are for the same tenant (the larger area). If you read my question carefully you will see that it is stated as such. I realise that many factors are implicated in the...