National Building Code 2005

1
National Building Code 2005

• Plumbing Requirements contained within the
  building code

2
Part 3

• National Building Code 2005 contains several
  requirements and regulations in Part 3 that
  pertain to plumbing systems within the building.
  The starting point is the classification of
  building occupancy.
• Classification of the building major use and
  additional uses is necessary to determine the
  occupant load and fire protection needs and the
  restriction of flammable material.

3
Occupancies

• In the National Building Code 2005 Division B,
  Part 3 section 3.1.2.1 are grouped into five
  major occupancies groups and various divisions

4
A Assembly

• Divisions
• Production and viewing of performing arts
• Others not classified (restaurants, bars)
• Arenas
• Open air gatherings (race track)

5
B Care and Detention

• Includes penitentiaries, jails, psychiatric
  wards and special needs facilities
• Divisions
• Under restraint or limited self preservation due
  to security measures
• Cognitive or physical limitations requiring
  special care or treatment

6
C Residential

• Divisions (none)
• May include group homes and personal care

7
D Business and Personal Service

• Divisions (none)
• insurance, hair salon, dentist, locksmith

8
E Mercantile

• Divisions (none)
• department stores

9
F Industrial

• Manufacturing
• Divisions
• high hazard
• medium hazard
• low hazard

10
OCCUPANT LOAD

• Is based on occupancy designation and is
  determined by Part 3 section 3.1.17.1
• limits the residential occupation load to 2
  persons per sleeping room
• otherwise determined by the floor area in square
  meters per person as stipulated in table 3.1.17.1

11
OCCUPANT LOAD continued

• The NBC 2005 equally divides the occupant load
  between males and females unless it can be proven
  to be accurately divided proportionally different
  as per section 3.7.2.2(1).

12
Minimum Plumbing Requirements

• NBC 2005 states in Part 3 section 3.7.2.1(1)
  that sanitary privies, chemical closets and other
  means of disposing human waste shall provided in
  the absence of water supply system.
• This is an indirect statement that essential is
  stating that once a building has a water
  distribution system, it must also have a drainage
  system with required fixtures.

13
Required Fixtures for Residential

• Are defined by NBC 2005 in statement 9.31.4.1.(1)
  and include a kitchen sink, lavatory, bathtub or
  shower and water closet.
• Statement 9.31.4.3.(1) includes a floor drain in
  the basement.
• Floor drains are also required in a garbage room,
  incinerator room or boiler room serving more than
  one dwelling unit in statement 9.31.4.3(2).

14
Fixtures required in other Occupancies

• Water closet 3.7.2.2.(1) number determined as per
  occupancy statement
• Water closet substitution 3.7.2.2.(5) two thirds
  rule for urinals
• Lavatory 3.7.2.3.(1) two WC to one lavatory rule
• Floor drain 3.7.2.7.(1) for auto flush urinal

15
Water Closets the Starting Point

• Section 3.7.2.2.(4) of the NBC 2005 states that
  both sexes may be served by a single water closet
  if the occupant load is 10 or less.
• Every dwelling requires a water closet as per
  statement 3.7.2.2(11).
• Additional required water closets are determined
  by code statements based on occupancy and
  occupant load.

16
Water Closet Determination

• Group A---Assembly table as per 3.7.2.2.A
• Group B---Care and Detention as per
  statement 3.7.2.2(9)
• Group C---Residential statement 3.7.2.2(10)
• Group D---Business and Personal Service as per
  table 3.7.2.2.B
• Group E---Mercantile as per statement
  3.7.2.2(13)
• Group F---Industrial as per table 3.7.2.2.C
• Primary schools and day care as per
  statement 3.7.2.2(7)
• Worship and Undertaking as per statement
  3.7.2.2.(8)

17
Universal Design

• The NBC 2005 intention is to have washroom
  facilities accessible to both sexes of persons
  with disabilities (section 3.8 universal) however
  dwelling units including homes, semi detached,
  duplex, triplex, town houses, row houses and
  boarding houses are exempt as per 3.8.1.1(1).
• Those buildings that incorporate a universal
  design washroom may reduce the occupant load by
  10 before applying the appropriate determination
  statement.

18
Major Occupancy Classifications

• A-3.1.2.1.(1) The following are examples of
  major occupancy classifications described in
  table 3.1.2.1

19
Group A, Division 1 ASSEMBLY

• Motion picture theaters
• Opera houses
• Television studios admitting a viewing audience
• Theaters, including experimental theaters

20
Group A, Division 2 ASSEMBLY

• Art galleries
• Auditoria
• Bowling alleys
• Churches and similar places of worship
• Clubs, nonresidential
• Community halls
• Courtrooms
• Dance halls
• Exhibition halls
• Gymnasia
• Lecture halls
• Libraries
• Licensed beverage establishments
• Museums
• Passenger stations and depots
• Recreational piers
• Restaurants
• Schools and colleges, nonresidential
• Undertaking premises

21
Group A Division 3 ASSEMBLY

• Arenas
• Indoor swimming pools, with or without spectator
  seating
• Rinks

22
Group A Division 4 ASSEMBLY

• Amusement park structures (not elsewhere
  classified)
• Bleachers
• Grandstands
• Reviewing stands
• Stadia

23
Group B Division 1 CARE AND DETENTION

• Jails
• Penitentiaries
• Police stations with detention quarters
• Prisons
• Psychiatric hospitals with detention quarters
• Reformatories with detention quarters

24
Group B Division 2 CARE AND DETENTION

• Childrens custodial homes
• Convalescent homes
• Hospitals
• Infirmaries
• Nursing homes
• Orphanages
• Psychiatric hospitals without detention quarters
• Reformatories without detention quarters
• Sanatoria without detention quarters

25
Group C RESIDENTIAL

• Apartments
• Boarding houses
• Clubs, residential
• Colleges, residential
• Convents
• Dormitories
• Hotels
• Houses
• Lodging houses
• Monasteries
• Motels
• Schools, residential

26
Group D BUSINESS and PERSONAL SERVICE

• Banks
• Barber and hairdressing shops
• Beauty parlors
• Dental offices
• Dry cleaning establishments, self serve, not
  using flammables
• Laundries, self serve
• Medical offices
• Offices
• Police stations without detention quarters
• Radio stations
• Small tool and appliance rental and service
  establishments

27
Group EMERCANTILE

• Department stores
• Exhibition halls
• Markets
• Shops
• Stores
• Supermarkets

28
Group F, Division 1 INDUSTRIAL

• Bulk plants for flammable liquids
• Bulk storage warehouses for hazardous substances
• Cereal mills
• Chemical manufacturing or processing plants
• Distilleries
• Dry cleaning plants
• Feed mills
• Flour mills
• Grain elevators
• Lacquer factories
• Mattress factories
• Paint, varnish and pyroxylin product factories
• Rubber processing plants
• Spray painting operations
• Waste paper processing plants

29
Group F, Division 2INDUSTRIAL

• Aircraft hangers
• Box factories
• Candy plants
• Cold storage plants
• Dry cleaning establishments not using flammable
  solvents
• Electrical substations
• Factories
• Freight depots
• Helicopter landing areas on roofs
• Laboratories
• Laundries, except self serve
• Mattress factories
• Planing mills
• Printing plants
• Repair garages
• Salesrooms
• Service stations
• Storage rooms

30
Group F, Division 3INDUSTRIAL

• Creameries
• Factories
• Laboratories
• Power plants
• Salesrooms
• Sample display rooms
• Storage garages, including open air parking
  garages
• Storage rooms
• Warehouses
• Workshops

31
Fire Separation and Fire Stopping

• Articles in Part 3 section 3.1.3.1 and
  3.2.8.2.thru 3.2.8.9 describe some of the
  requirements regarding non combustible
  construction and smoke and fire resistance
  limitations.
• Part 3 section 3.1.5.17 describes combustible
  plumbing fixtures use in a non combustible
  constructed building.
• Articles in Part 3 section 3.1.9.1 and 3.1.9.4
  describes fire separation penetration fire
  stopping requirements.

32
STANDPIPE

• Firefighting requirements are described beginning
  in section 3.2.5.7 for buildings more than 3
  stories in height.