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@lilliput1 (Mechanical)- Yes I have not shown here that part. A re-circulation duct is available as you are saying. All the components except the masonry duct and air diffusers are located on the rooftop. My problem is that, should we have fire rated components at the rooftop. @MEP.Learner...

Thank you for your answers. In my design, staircase is protected for 2 hours. Air intake duct and fans are located on the roof top. That duct is connected to a masonry wall duct. The masonry duct is located inside the protected staircase. Relevant sketch is attached herewith...

Dear all, I have a problem related to staircase pressurization system. do we require fire rated components for this system. Some says, we don't require fire rated components, because this is a fresh air supply system and the ducting and other components are located in a protected space. Is that...

I am starting a new thread regarding mentioned subject because I could not find a solutions from the earlier threads. I am working on a project which involves condenser and chilled water piping with a vertical rise of approximately 45m (400mm diameter). My experience has typically been...

Thank you for your comments. If one of you have faced this problem and have found solid answer or method please help me. thank you.

Thank you Mr.sprinkler1000,for your idea. I checked our local code. That also recommend to go for a Smoke Extraction System. But it also says that our system should comply with the BS 7346 code. As I understood the code, It does not discuss that manner (whether we want to assume that the office...

Hi All, I'm a junior mechanical Engineer and new to this forum. I'm designing a SHEVS (Smoke and Heat Exhaust Ventilation System). I collected the guidance from given by BS 7346, NFPA 92 B, Simplified Method for designing a Mechanical Smoke Exhaust System for high-rise building etc. my building...

I'm working on a design of HVAC system for a building. I have a conflict to decide, whether we want a smoke extraction system or we do not want. How do we decide it? Thank you,

Hi, 1st of i want to tell all of you that I'm new for this forum, my requirement is to find pdf format of BS 8110-2-1985. please help me.

thank you for your comments.

Hi, first of all I want to say that I'm new for this forum. I'm designing a smoke management system. I have a problem in the selection of Fans for Smoke and Heat Exhaust System, is there a limitation in maximum sound level (dB - limit)? My idea is we do not need to consider about the sound level...