I need some clarification on following:
The 'Air system sizing summary report' generated from Hap software defines different airflow rates in 'central cooling coil data'. They are
a)Coil L/s at month/time
b)Max Block L/s at month/time
c)Sum of peak zone l/s.
The 'Supply Fan sizing data' also...
Ashrae 62.1 describes the minimum ventilation requirements for occupied zones/breathing zones considering the maximum expected occupancy in that zone and zone area. What would be the ventilation rate in unoccupied mode. Will it be calculated same way as for occupied mode considering occupancy to...
Hi everyone. I have a question regarding Air changes in occupied space. I am very much clear on Ashrae 62.1 Outdoor air requirements. My concern is about the total supply air changes that is to be maintained in any space. For example: A room has outdoor air requirement of 210 l/s following...
There is a college campus (single building with large area) fully protected with sprinkler system. The building has some open spaces (with some tress and plants) where new construction is required. The new construction will be for offices, activity hall, assembly hall etc. How the fire...
As per IBC, minimum condition to have standpipe in a building is occupancy level must be more than 9.1m (30feet).Standpipe requirement given in IBC is only for Class I and Class III type. It does not say when Class II type of standpipe is required. NFPA 14 also states only the locations of Class...
International Building Code defines high rise building as one where the occupied floor height is more than 22.8m. Please let me know what is the minimum height or number of floors required for the stairwell to be pressurized. I have an office building with Ground plus 3 storey. Each storey is 5...
I am working on a project which involves multiple facilities. We have a water tank and a pump room on site. Our client needs only one single water line in the site which will be common to both fire water and potable water. At every building inlet point, there are 2 lines entering the building...
I have two questions. 1) How does Control mode Density/Area(CMDA) Sprinklers differ from Control mode Specific Application(CMSA) Sprinklers. NFPA 13 (2010 Edition) section 14.2 & 14.3 describes these two. The design criteria for CMSA sprinklers is well described in Table 14.3.1 of NFPA13 but the...
Why all super markets or Food Stores are protected with Upright sprinklers. Is it just because there is no flase ceiling or it has something to do with the flow pattern of the upright sprinkler or the smoke flow reduction or just to avoid obstuction in storage areas. Please provide any code...
HI, I AM LOOKING FOR SOME GOOD STUDY MATERIAL ON HVAC CONTROLS AND BMS SYSTEM. IF ANYONE CAN SUGGEST ANY LINK OR POST ANY MATERIAL, IT WOULD BE GREAT HELP.
Hi, I have been looking for the answer of one basic question for so long and I hope I will find some interesting answers here. My question is related to Indoor design conditions. In summer, we generally keep indoor temperature 24C. But in winter why the indoor temperature is set to 21C...
I am working on a project, the site involves many facilities which includes some Administration buildings, workshops, warehouse, etc. Only warehouse building is required to have sprinkler system as per IBC as it comes under group S1. Other buildings are non sprinklered. The Hydraulically...
I have to design Fire protection system for some warehouses. Based on the type of stuff being stored, the Warehouses comes under Group S2 as per IBC section 311.3 (2009 edition). But IBC section 903.2.10 describes the fire protection only for parking garages. I see many things in NFPA 13...
I have a question related to Fire Hydrants. I always design a Sprinkler system for a building without bothering about a Fire Hydrant. I just Calculate the Demand Flow and Demand Pressure, Check the availability of the required pressure on City water and then decide to have a Fire pump. I want to...
I have a small Flammable Storage (50m2) with Paint Spray booth beside. What Fire protection is required for such small place. Does any code permit me to use Clean Agent System or Carbon dioxide system in this small area. Please suggest me the code requirements.
I have been searching for the requirement of Fire hose cabinet in IBC & NFPA for so long. I have gone through many threads to get the idea but still there is lot of confusion. I have done some projects wherein I have designed a sprinkler system for buildings less than 9.1m heights and I have not...
I came across a project where a building was supplied with roof top package unit. Also there were VAV boxes used for different zones. I want to know whether the VAV boxes can be used with Package units or not/. As per my knowledge there will be no Variable Frequency drive in package...
I have designed a Fire Suppression system which requires 267 gpm @ 50 Psi. The Available Site Pressure is 30 Psi. I have made Fire pump selection to deliver 250 gpm and to satisfy the mentioned pressures. The HP of this pump is found to be 15HP. Now when I Design a Fuel tank as per NFPA-20...
Can Anyone help me in selecting the Fire pumps online. I have one link mentioned below but I want some other make for Fire Pumps. Your quick response is much appreciated.
https://rcwapp.xyleminc.com/fp_select.asp
REGARDS,
ADNAN...
