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SSDD09, The spot ventilation is a good Idea, are there any instances as such used in the electrical rooms? Do they work?

The air and water side calculations will be done by HAP. All you need to do is give the correct inputs. With regard to the damaged duct, It will be required to carry out a smoke or light test on the duct and the contractor will be obliged to change the piece of duct if it fails the test. Just...

Guys, For the Open parking structures satisfying the requirements of NFPA 88A, 5.5.1 and 5.5.2, Is the CFD analysis required to be done or not? In the open parking structures we are using the natural ventilation only and it is above ground. Thank you Guys.

Hi, Mine is open, actually natural ventilation is acceptable if in compliance with NFPA 88A 5.5.1. Thanks for the reply.

Guys, For an above-ground 2 storey car parking building with acceptable natural ventilation as per NFPA 88A 2011 5.5.1, is mechanical smoke exhaust system still required. Can we just trust the natural ventilation to exhaust the smoke on its own?

Pedarin, Thanks for the reply but, I mean to ask if one sump pit can collect sewage from multiple sump pits and then dispose of to the network.

Guys, Is it acceptable if multiple sewage sumps are connected to a single large sump pit from where it will then be disposed off to the site sewage network? All 3 sump pits are at the same level, below grade.

Guys, Is it acceptable if multiple sewage sumps are connected to a single large sump pit from where it will then be disposed off to the site sewage network? All 3 sump pits are at the same level, below grade.

Thanks little inch...great answer

Thanks Pedarrin..

Guys, I have 2 duty pumps for a storm water pumping station. Is it absolutely necessary that we design these 2 pumps for 100% of the flow capacity? What are the factors that would determine this decision.

Guys, I have 2 duty pumps for a storm water pumping station. Is it absolutely necessary that we design these 2 pumps for 100% of the flow capacity? What are the factors that would determine this decision.

Thank you guys[bigsmile]

Guys, As per NFPA 13 8.1.8 sprinklers shall not be required in the air handling unit rooms not intended for occupancy. I have a FAHU room outside of the building; the contractor refuses to provide an automatic fire suppression system (water sprinkler based) and only fire extinguisher. I am...

Guys, What is the basic criteria to decide the number of pumps. I mean, 1 duty + 1 Standby or 2 duty + 1 standby. How to be decided?

Thank you guys Bimr, kindly can you let me know what do you mean by plugging? Is it blocking?

Peddarin, The first sentence in your reply is unclear, can you please rephrase it?

Thank you guys

Guys, Is it ok to combine the forced sewage pipes from 2 sump pits before they get into the inspection chamber(manhole), i think they must be taken separately till the inspection chamber.

Thank you Peddarin