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  1. orator

    Section 906.1 - International Building Code - 2012

    The question is related to section 906.1 of IBC. The section clearly defines 6 locations (under item 1 through 6, apart from table 906.1) where the fire extinguishers are required. The confusion is in exception of item 1 where it says "Exception: In Group R-2 occupancies, portable fire...
  2. orator

    Non sprinklered Group A building

    Referring to section 903 of International building code, buildings classified as Group A-1, A-2, A-3, A-4 are required to have sprinkler system if any one condition under respective sections exists. In this case If I have a group A (Can be group A1 or A2 or A3 or A4) building with occupant load...
  3. orator

    Demand control ventilation or Efficiency control ventilation

    An air handler is serving 10 classrooms each served by dedicated VAV box. As the classrooms are high occupancy areas, Ashrae 90.1 (2010) section 6.4.3.9 can be applied. The basic requirement to apply Demand control ventilation as per Ashrae 90.1 is that the area of the space should be greater...
  4. orator

    Direct supply (without VAV box) in a space served by VAV system

    Is it correct to have direct supply (without VAV box) in a space that is served by VAV system. For example : A building is having 10 different spaces and all are provided with VAV boxes. There are some internal spaces like corridors, Toilets etc. which actually doesn’t need VAV control...
  5. orator

    VAV maximum and minimum airflow setting

    A space require supply air of 500l/s and its outdoor air requirement is 450l/s. If a VAV box is used for this space then maximum supply air setting of a VAV box is 500l/s and minimum airflow is set at 450l/s. How good is it to provide a VAV box with electric reheat coils in this case? The...
  6. orator

    Expansion Tank - Pressure (p2) at high Temperature in chilled water system

    I have gone through many threads regarding expansion tank location, pressure requirements etc. One thing which is still not clear to me is the pressure P2 at highest temperature. I understand that this pressure is slightly less than the relief valve setting. I have two questions in this regard...
  7. orator

    Class II Standpipe Requirement

    International Building Code (2012) section 905.3 gives the requirements of Class III & Class I standpipes. Section 905.4, 905.5, 905.6 gives the location of Class I, Class II and Class III standpipes respectively. IBC fails to give the requirements of Class II standpipe. Where exactly Class II...
  8. orator

    Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

    A 4 storey building with 20,000 sq.meter as a floor area for each storey is divided into 5 zones to comply with system protection area limitation as per NFPA 13 section 8.2. Now if five risers are provided to serve the building with sprinkler system, how many fire pumps are required. A single...
  9. orator

    Standpipe system in B+G+2 Storey Educational building with 20,000 sq. meter area.

    An Educational facility (above 12th Grade) with an area of 20,000 sq.meters and B+G+2 floors. Each floor 4.3 meters in height. Fire protection for the building is designed considering following sections from IBC ( 2009 Edition) and NFPA 13 & 14 (2010 Editions). Occupancy Classification ...
  10. orator

    Requirement of partial sprinkler system

    If a building is G+2 floors. If it is considered that only last floor has group B occupancy and remaining floors have other occupancy which requires sprinkler system. Is it now possible that I provide sprinkler system only in Ground and first floor with second floor being unsprinklered?
  11. orator

    Pressure at hose valve

    A building (Group A) is provided with automatic sprinkler system. Standpipe is not required as the distance lowest level of fire department access and highest floor level is less than 9.1 m (building is 2 story). As there is no standpipe, if I provide a hose connection (fire hose cabinet)...
  12. orator

    Sizing and selection of Chemical feeder pot for chilled water system

    I am designing a chilled water system (650 TR). Please help me size and select the chemical feed pot required in the system. Any codes or standards to follow will be a great help. Thanks
  13. orator

    Hose stream allowance and Fire hose cabinets

    I have a question regarding Hose stream allowance. NFPA13- Table 11.2.3.1.2 provides information about Hose Stream allowance. Please let me know what exactly is hose stream allowance. If I provide 100 gpm hose stream will it be discharged at fire hose cabinet. To my Understanding I always...
  14. orator

    Ventilation or Air conditioning in Mechanical room?

    A swimming pool building has got an underground mechanical room. The room contains all mechanical equipments (Water heaters, tanks, chemical dosing tanks etc related to swimming pool). Local code says "Ventilation for mechanical equipment rooms shall provide 10 air changes per hour. Fans shall...
  15. orator

    Hvac controls guide

    Hi everyone, I am completely dumb when it comes to hvac controls. I am hvac/fire protection engineer but when it comes to controls I feel sick. Please provide some links or study material which can help me start from scratch.
  16. orator

    Wet standpipe and Dry standpipe together?

    Hello everyone! I have designed a Fire protection system for a 5 storey building which is fully sprinklered and also have wet standpipe system (Combined system). The building has got 5 staircases which are all provided with vertical standpipe risers to serve one hose valve at each floor. Also 3...

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