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Thank you UFT12, for the clarification. The picture shows LPCB approved breeching inlet (Fire department connection). I have not found the similar arrangement in UL listed fire department connection. Could you please clarify?

Can anyone clarify the purpose of drain valve in fire department connection?

Dear Experts, The above picture is from a site inspection report. Is it true? Can anyone help me with any reference, please?

Greetings I would like to check with you is there any sizing calculation available for air vents (at top of sprinkler riser). I have checked NFPA13 and couldn't find anything other than 15mm size mentioned for manual air vents. Would it be possible to get your valuable advise? Thank You.

Dear Experts, Kindly confirm whether emergency lighting is required for the padel court and basket ball court areas of the indoor stadium/play area. Thanks in advance.

Kindly follow the below sketch for better understanding.

Instead of dedicated control panel / releasing panel for pre action, solenoid activation via fire alarm system control panel along with a normally open relay module proposed.

Dear Experts, The diagram below depicts the proposed single interlock pre-action (+dry pendent, as directed by project consultant) for a cold storage area. The detection portion is handled by the VESDA system. (The pre-action system does not have a control panel) Kindly take a look at the...

Dear Experts, Please clarify whether an emergency lighting system must be linked to the fire alarm system in the building. Anyone who can provide NFPA or IBC references is greatly appreciated. Thank you!

Thank you MGXFP & Travis for your inputs.

Dear Experts, Kindly suggest a UL Listed/FM approved hydraulic calculation software for sprinkler system.

Can anyone advice me on the installation of two mechanical tees as below. Is its allow or not.

I was wondering if anyone could help me with the selection of NEMA enclosure, based on the following specification. NEMA2/NEMA3/something else? Thank you!

In this case, after summarizing queries / bid clarification from bidders, client will not allow any further qualification notes. This will help sometimes. I am considering the above. Could you please help me further with my bullet point #2? rephrase with a positive tone?

In my case, documented evidence is important.

To make it exact: A note to consultant from contractor (for submission of quotation/for design submission etc.). The intention is not to feel them bad/irritated by highlighting their mistakes in documents supplied as input for our reference. Notes with positive vibes :)

Dear Professionals, The below two sentences are for qualifying our quotation for a project. Please be noted that, design drawing # DRG-01 shows X capacity of equipment which is inadequate for the project requirement. Therefore, we propose Y capacity in our offer. Please be noted that...

Thank you gerhardl & Littleinch for further updates.

Wow too many experts! Really appreciate all your suggestions. Thank you all so much! My requirement is exactly matching with the solution provided by SkipVought.