DEPARTMENT OF LABOR AND ECONOMIC GROWTH

                               DIRECTOR'S OFFICE

                               CONSTRUCTION CODE


(By authority conferred on the  director  of  the  department  of  labor  and 
economic growth by section 4 of 1972 PA  230,  MCL  125.1504,  and  Executive 
Reorganization Order Nos. 1996-2 and 2003-1, MCL 445.2001 and 445.2011)



                           PART 9A. MECHANICAL CODE


R 408.30901    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30901a  Adoption by reference of international mechanical code.
  Rule 901a.  The provisions  of  the  international  mechanical  code,  2006 
edition, except for sections 103.2, 103.4, 104.2, 106.5.1 to 106.5.3, 107.1.2 
to 107.1.2.3,  109.2  to  109.7  and  appendix  B  govern  the  construction, 
alteration, relocation,  demolition,  use  and  occupancy  of  buildings  and 
structures.  With the exceptions noted, the code is adopted in these rules by 
reference.  All references to the International Building Code,  International 
Residential  Code,  International  Energy  Conservation  Code,  International 
Electrical Code, International Mechanical Code,  and  International  Plumbing 
Code mean the Michigan Building Code,  Michigan  Residential  Code,  Michigan 
Uniform Energy Code, Michigan Electrical Code, Michigan Mechanical Code,  and 
Michigan Plumbing Code respectively.  The code is available for inspection at 
the Okemos office of the Michigan department  of  labor  &  economic  growth, 
bureau  of  construction  codes.   The  code  may  be  purchased   from   the 
International  Code  Council,  500  New  Jersey  Avenue,  N.W.,  6th   Floor, 
Washington, D.C. 20001, or from the Michigan Department of Labor  &  Economic 
Growth, Bureau of Construction Codes, 2501 Woodlake Circle, Okemos,  Michigan 
48864, at a cost as of the time of adoption of these rules of $50.00 each.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS;
2003 AACS; 2007 AACS.


R 408.30902a   Licensing requirements.
  Rule 902a.  Section 101.2 of the code is amended to read as follows:
  101.2.  Scope.  This code regulates the design, installation,  maintenance, 
alteration,  and  inspection  of  mechanical  systems  that  are  permanently 
installed and utilized to provide control  of  environmental  conditions  and 
related processes within  buildings.   This  code  shall  also  regulate  the 
mechanical systems, system components, equipment, and appliances specifically 
addressed in this code.
  Exceptions:
  1.   Mechanical  systems  within  1-  and  2-family  dwellings   shall   be 
constructed and maintained in accordance with the Michigan  residential  code 
for 1- and 2-family dwellings.
  2.   Mechanical  systems   in   existing   buildings   undergoing   repair, 
alterations, or additions, and change of  occupancy  shall  be  permitted  to 
comply with the Michigan rehabilitation code for existing buildings.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS;  2003 
AACS.


R 408.30903a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.


R 408.30904a   Inspector registration.
  Rule 904a.  Section 103.1 of the code is amended to read as follows:
  103.1.  General.  The position of mechanical inspector  is  created.    The 
mechanical inspector shall be appointed in accordance with 1986  PA  54,  MCL 
338.2301 et seq.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.


R 408.30905a  Definitions.
  Rule 905a.  The definition of the act is added and the definition  of  code 
official is amended to read as follows:
  202.   "Act"  means  1972  PA  230,  MCL  125.1501.  and   known   as   the 
Stille-DeRossett-Hale single state construction code act.
  "Code official"  means  a  person  who  is  appointed  and  employed  by  a 
governmental  subdivision  who  is  charged  with  the   administration   and 
enforcement of the state code or codes, and who is registered  in  accordance 
with 1986 PA 54, MCL 338.2301 to 338.2313.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS ; 2007 AACS.


R 408.30906    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30906a  Work permit; submitting plans and specifications to authority.
  Rule 906a.  Sections  106.1,  106.2,  106.3,  106.3.1  106.4,  106.4.3  and 
106.4.4 of the code are amended to read as follows:
  106.1.  Permits required.  A contractor licensed pursuant to 1984  PA  192, 
MCL 338.971 to 338.988 who desires to erect, install, enlarge, alter, repair, 
remove, convert, or replace a mechanical system, the installation of which is 
regulated by this code, or to cause such work to be done,  shall  first  make 
application in accordance with the requirements of the act.
  Exception:  A person who holds a  valid  boiler  installer  license  issued 
under 1965 PA 290, MCL 408.751 to 408.776  shall  secure  a  permit  for  the 
installation of a steam or hot water boiler which carries a pressure  of  not 
more than 15 psig for steam and 160 degrees Fahrenheit  for  hot  water,  and 
which is located in a private residence or in an apartment building having  5 
or less dwelling units.
  106.2.  Permits not required.  A person is not required to obtain a  permit 
to perform mechanical work on any of the following items:
  (a)  A portable heating or gas appliance.
  (b)  Portable ventilation equipment.
  (c)  A portable cooling unit.
  (d)  A minor part that is replaced  if  the  replacement  does  not  affect 
equipment approval or make it unsafe.
  (e)  A portable evaporative cooler.
  (f)   Self-contained  refrigeration  equipment  and   a   window-type   air 
conditioner that is not more than 1.5 horsepower.
  (g)  A boiler or pressure vessel for which a permit is required by sections 
17 and 18 of 1965 PA 290, MCL 408.767 and 408.768.
  (h)  An oil burner that does not require connection to a flue, such  as  an 
oil stove and a heater equipped with a wick.
  (i)  A portable gas burner that has inputs of less than  30,000  Btu's  per 
hour.
  (j)  When changing or relocating a gas meter or regulator, a permit is  not 
required when installing gas piping which shall be  limited  to  10  feet  in 
length and not more then 6 fittings.
    106.3  Application for permit.  Each application for a  permit  with  the 
required fee, shall be filed with the code official on a form  furnished  for 
that purpose and shall contain a general description of the proposed work and 
its location.  The contractor who is  performing  the  work  shall  sign  the 
application.  The permit application shall indicate the proposed occupancy of 
all parts of the building and of that portion of the site or lot, if any, not 
covered by the building  or  structure  and  shall  contain  the  information 
required by the act.
  106.3.1  Construction  documents.   Construction   documents,   engineering 
calculations, diagrams, and other data shall be submitted in 2 or  more  sets 
with  each  application  for  a  permit.  The  code  official  shall  require 
construction documents, computations, and specifications to be  prepared  and 
designed by a registered design professional in accordance with 1980 PA  299, 
MCL 339.101 to 339.2919.  Where special conditions exist, the  code  official 
may require additional construction documents to be prepared by a  registered 
design professional.  Construction documents shall  be  drawn  to  scale  and 
shall be of sufficient clarity to indicate the location, nature,  and  extent 
of the work proposed and show  in  detail  that  the  work  conforms  to  the 
provisions of this code.  Construction documents for buildings  more  than  2 
stories in  height  shall  indicate  where  penetrations  will  be  made  for 
mechanical systems, and the materials and methods  for  maintaining  required 
structural safety, fire-resistance rating and fire blocking.
Exception: The  code  official  may  waive  the  submission  of  construction 
documents, calculations or other data if the nature of the work  applied  for 
is such  that  reviewing  of  construction  documents  is  not  necessary  to 
determine compliance with the code.
  106.4.   Permit  issuance.   The  enforcing   agency   shall   review   the 
application, construction documents, and other data filed by an applicant for 
permit in accordance with the act.  If the enforcing agency  finds  that  the 
proposed work conforms to the requirements of the  act,  the  code,  and  all 
other applicable laws and ordinances thereto, and that all fees prescribed by 
the act have been paid, then the enforcing agency shall issue a permit to the 
applicant.
  106.4.3.  Expiration.  Each permit issued by the code  official  under  the 
provisions of the code shall expire by limitation and become null and void if 
the work authorized by the permit is not begun within 180 days from the  date 
of the permit, or if the work authorized  by  such  permit  is  suspended  or 
abandoned at any time after the work is begun for a  period  of  180  days.
Before work is recommenced, a new permit shall be first obtained, provided no 
changes have been made or will be made in the original construction  document 
and that suspension or abandonment has not exceeded 1 year.
  106.4.4.  Extensions.  A permittee holding an unexpired  permit  may  apply 
for an extension of the time within which the permittee may begin work  under 
that permit if for good and satisfactory reasons.  The  code  official  shall 
extend the time for action by the permittee for a period  not  exceeding  180 
days if there is reasonable cause.  No permit shall  be  extended  more  than 
once.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2003 AACS; 
2007 AACS.


R 408.30907    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30907a  Fees.
  Rule 907a.  Section 106.5 of the code is amended to read as follows:
  106.5.  Fees.  The fees  prescribed  by  the  act  shall  be  paid  to  the 
enforcing agency of the jurisdiction before a permit to begin  work  for  new 
construction, alteration, removal, demolition, or  other  building  operation 
may be issued.  In addition,  an  amendment  to  a  permit  necessitating  an 
additional fee shall not be approved until the additional fee is paid.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2003 AACS; 
2007 AACS.


R 408.30908    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30908a  Means of appeal.
  Rule 908a.  Section 109.1 of the code is amended to read as follows:
  109.1.  Means of appeal.  An interested person may appeal a decision of the 
enforcing agency to the board of appeals in  accordance  with  the  act.   An 
application for appeal shall be based on a claim that the true intent of  the 
code or the rules governing construction have been  incorrectly  interpreted, 
the provisions of the code do not apply,  or  an  equal  or  better  form  of 
construction is proposed.  The decision of a local board of  appeals  may  be 
appealed to the Construction Code Commission in accordance with the  act  and 
the applicable time frames.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2003 AACS; 2007 AACS.


R 408.30909    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30909a  Violations.
  Rule 909a.  Section 108.4 of the code is amended to read as follows:
  108.4  Violation penalties.  Any person who violates a  provision  of  this 
code, who fails to conform with any  of  the  requirements  thereof,  or  who 
erects, installs, alters, or repairs mechanical  work  in  violation  of  the 
approved construction documents or directive of the enforcing  agency,  or  a 
permit or certificate issued under the provisions  of  this  code,  shall  be 
fined in accordance with the act.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2003 AACS; 
2007 AACS.


R 408.30910    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30910a  Stop work orders.
  Rule 910a.  Section 108.5 of the code is amended to read as follows:
  108.5.  Stop work orders.  Upon  notice  from  the  enforcing  agency  that 
mechanical work is being done contrary to the provisions of this code or in a 
dangerous or unsafe manner, the work shall immediately cease.   Notice  shall 
be in accordance with the act.  A person who  is  served  with  a  stop  work 
order, except for work that a person is  directed  to  perform  to  remove  a 
violation  or  unsafe  condition,  is  subject  to  the  penalty   provisions 
prescribed by the act.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2003 AACS; 
2007 AACS.


R 408.30911    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30912    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30912a  Enclosed Parking Garages.
  Rule 912a.  Section 404.1 of the code is amended to read as follows:
  404.1.  Enclosed  parking  garages.   Mechanical  ventilation  systems  for 
enclosed parking garages are not required to operate continuously  where  the 
system is arranged to operate automatically upon detection of a concentration 
of carbon monoxide of 25  parts  per  million  (ppm)  by  approved  automatic 
detection devices.  Upon activation such systems shall operate for 30 minutes.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 2007 AACS.


R 408.30913    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30914    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30915    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30915a  Scope of article; adoption by reference.
  Rule 915a.  Section 601.1 of the code is amended to read as follows:
  601.1.   The  provisions  of  this   article   govern   the   construction, 
installation, alteration, maintenance, and  repair  of  duct  systems.   Duct 
systems shall  be  in  compliance  with  the  provisions  of  the  code,  the 
provisions of NFPA 90A-2002 and NFPA 90B-2006, the standards of the  national 
fire  protection  association,  and  the  provisions  of   air   conditioning 
contractors of America (ACCA) manual D-1995, manual  J-2006,  manual  N-1988, 
and manual Q-1990, as listed in chapter 15.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2007 AACS.


R 408.30916    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30916a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.


R 408.30917    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30917a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30918    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30918a  Registers, grilles, and diffusers.
  Rule 918a.  Section 603.17.2 of the code is amended to read as follows:
  603.17.2.  Prohibited locations.  Diffusers, registers, and  grilles  shall 
be prohibited in the floor or its upward extension within toilet and  bathing 
room floors.
  Exception:  Dwelling units.  Within dwelling units, floor registers may  be 
located in a room or space containing water closets, but shall be  located  a 
minimum of 3 feet from the water closet.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2003 AACS; 2007 AACS.


R 408.30919    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30919a   Rescinded.

  History:  1989 AACS; 1995 AACS.


R 408.30920    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30920a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; rescinded 1998-2000 AACS.


R 408.30920    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30921a   Rescinded.

  History:  1992 AACS; 1995 AACS.


R 408.30922    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30922a   Rescinded.

   History:  1996 AACS; 1998-2000 AACS.


R 408.30923    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30923a   Equipment installation.
  Rule 923a.  Sections 301.7.1 and 301.16 are added to the code  to  read  as 
follows:
  301.7.1.  Electrical disconnect.  The mechanical  contractor  shall  ensure 
that all equipment has an electrical disconnect  switch  on,  or  immediately 
adjacent to, the equipment.
  301.16.  Heating system.  Each dwelling unit shall be provided with heating 
facilities capable of maintaining a minimum room temperature  of  68  degrees 
Fahrenheit at a point 3 feet above the floor and 2 feet from  exterior  walls 
in all habitable rooms at the design temperature.  The installation of  1  or 
more portable space heaters shall not be used to achieve compliance with this 
section.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2003 AACS.


R 408.30924    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30924a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.


R 408.30925    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30925a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30926    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30926a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30927    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30927a  Roofs and elevated structures.
  Rule 927a.  Sections 306.5 and 306.5.1 of the code are amended to  read  as 
follows:
  306.5  Equipment and appliances on roofs  or  elevated  structures.   Where 
equipment and appliances requiring access are installed on roofs or  elevated 
structures at a height that requires access exceeding 16 feet (4877 mm), such 
access shall be provided by a permanent approved means of access, the  extent 
of which shall be from grade or floor level to the equipment and  appliances' 
level  service  space.   Such  access  shall  not   require   climbing   over 
obstructions greater than 30 inches (762 mm) high or walking on roofs  having 
a slope greater than 4 units vertical  in  12  units  horizontal  (33-percent 
slope).  Where access involves obstructions greater than 30 inches in height, 
permanent ladders or equivalent, shall be provided on  both  sides  requiring 
access in accordance with the ladder requirements of this section.
  Permanent ladders installed to provide the  required  access  shall  comply 
with the following minimum design criteria:
  1.  The side railing shall extend above the parapet or roof edge  not  less 
than 30 inches (762 mm).
  2.  Ladders shall have rung spacing not to exceed 14  inches  (356  mm)  on 
center.
  3.  Ladders shall have a toe spacing not less than 6 inches deep.
  4.  There shall be a minimum of 18 inches (457 mm) between rails.
  5.  Rungs shall have a minimum 0.75-inch (19 mm) diameter and be capable of 
withstanding a 300-pound (136.1kg) load.
  6.  Ladders over 30 feet (9144 mm) in height shall be provided with  offset 
sections and landings capable of withstanding 100 pounds  (488.2  kg/m2)  per 
square foot.
  7.  Ladders shall be protected against corrosion in accordance with section 
104.1 of the code.
  Catwalks installed to provide the required access shall be not less than 24 
inches (610 mm)  wide  and  shall  have  railings  as  required  for  service 
platforms.
  Exception: This section shall not apply to group R-3 occupancies.
  306.5.1 Sloped roofs.  Where appliances are installed on a  roof  having  a 
slope of 3 units vertical in 12 units horizontal or  greater  and  having  an 
edge more than 30 inches above grade at such edge, a level platform shall  be 
provided on each side of the appliance to which the access  is  required  for 
service, repair, or maintenance.  The platform shall  not  be  less  than  30 
inches in any dimension and shall be provided with guards.  The guards  shall 
extend not less than 42 inches above the platform, shall be constructed so as 
to prevent the passage of a 21-inch-diameter sphere and shall comply with the 
loading requirements for guards specified in the  Michigan  building  code.
Access to appliances shall not require  climbing  over  obstructions  greater 
than 30 inches (762 mm) high or walking on roofs having a slope greater  than 
4 units vertical in 12 units horizontal  permanent  ladders,  or  equivalent, 
shall be provided on both sides  requiring  access  in  accordance  with  the 
ladder requirements of section 306.5.
  Exception: This section shall not apply to group R-3 occupancies.

  History:  1989 AACS; 1995 AACS; 
2007 AACS.


R 408.30928    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30928a   Miscellaneous fuel-fired equipment.
  Rule 928a.  Section 303.3 of the code  is  amended  to  add  the  following 
exception:
  303.3. (Exception 4) A premanufactured fireplace that has an integral  door 
or doors or a shutter or shutters which are constructed to close off the fire 
chamber from the living space and which are used in conjunction with  outside 
combustion air that has a cross sectional inlet area that is  not  less  than 
the smaller of either of the following:
  (a)  Fifty percent of the cross sectional flue area.
  (b)  Twenty-five square inches (161 cm).
The inlet  shall  conduct  the  combustion  air  directly  from  outside  the 
structure and connect to the inlet of the fire chamber assembly.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.


R 408.30929    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30929a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30930    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30930a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30931    Rescinded.

  History:  1979 AC; 1989 AACS; 1998-2000 AACS.



R 408.30931a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS. 


R 408.30931b   Rescinded.

  History:  1979 AC; 1989 AACS; 1998-2000 AACS.



R 408.30932a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30933    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30933a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30934    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30935    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30935a  Ventilation requirements for commercial kitchens.
  Rule 935a  Sections 506.1, 506.3.6, 507.1, 507.2.2, and 507.9, of the  code 
are amended and sections 507.16.1.1 is added to the code to read as follows:
  506.1.  Ventilation requirements for commercial kitchens.  Ventilation  for 
commercial kitchens shall be in compliance with NFPA-96-2004, the standard of 
the national fire protection association listed in chapter 15.
  506.3.6  Grease duct clearances.  Grease duct systems and exhaust equipment 
serving a type I hood shall have clearances to combustibles  as  required  by 
NFPA 96-2004, as listed in chapter 15.
  Exception:  Listed and labeled factory  -built  commercial  kitchen  grease 
ducts and exhaust equipment installed in accordance with section 304.1 of the 
code.
  507.1  General.  Commercial kitchen exhaust hoods  shall  comply  with  the 
requirements of this section and NFPA 96-2004, as  listed  in  chapter  15.
Hoods shall be type I or type II and shall be designed to capture and confine 
cooking vapors and residues.
  Exceptions:
  1.  Factory-built commercial exhaust hoods which are tested  in  accordance 
with UL 710B-2004 or 197SB-2003, as listed in chapter  15,  listed,  labeled, 
and installed in accordance with section  304.1  shall  not  be  required  to 
comply with sections 507.4, 507.7, 507.11, 507.12, 507.13, 507.14, and 507.15 
of the code.
  2.  Factory-built commercial cooking recirculating systems which are tested 
in accordance with UL 197-2003, as listed in chapter 15, listed, labeled, and 
installed in accordance with section 304.1 of the code shall not be  required 
to comply with sections 507.4, 507.5,  507.7,  507.12,  507.13,  507.14,  and 
507.15 of the code.
  3.  Net exhaust volumes for hoods may be  reduced  during  no-load  cooking 
conditions, where engineered or listed multi-speed or variable-speed controls 
automatically operate the exhaust system to maintain capture and  removal  of 
cooking effluents as required.
  507.2.2.  Type II hoods.  Type II hoods shall be installed where cooking or 
dishwashing appliances produce heat or steam and do  not  produce  grease  or 
smoke, such as steamers, kettles, pasta cookers,  dishwashing  machines,  and 
ovens.
  Exceptions:
  1.  Under-counter type commercial dishwashing machines.
  2.  A type II hood is not required for dishwashers and potwashers that  are 
provided with heat and water vapor exhaust systems that are supplied  by  the 
appliance  manufacturer  and   are   installed   in   accordance   with   the 
manufacturer's instructions.
  3.  Ovens used for re-heating foods previously cooked.
  507.9.  Clearances for type I hood.  A type I hood shall be installed  with 
clearances from combustibles as required by NFPA 96-2004 as listed in chapter 
15.
  507.16.1.1  Smoke test.  The field test identified in section  507.16.1  of 
the code shall be conducted in accordance with the smoke  testing  procedures 
established by the bureau of construction codes, which are  available  at  no 
cost from the  bureau's  web  site  at  www.michigan.gov/bcc,  or,  from  the 
Michigan Department of Labor and  Economic  Growth,  Bureau  of  Construction 
Codes, 2501 Woodlake Circle, Okemos, Michigan, 48864.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2003 AACS; 2007 AACS.


R 408.30936    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30936a  Scope of article.
  Rule 936a.  Sections 1001.2 is added to the code and section 1004.3 of  the 
code is amended to read as follows:
  1001.2.  Boilers.  In addition to the other provisions of  the  code,  this 
article governs the installation, alteration, and repair of water heaters and 
boilers.  The installation  of  boilers  shall  be  in  compliance  with  the 
provisions of this code and the Michigan boiler code.
  1004.3.  Working clearance.  Clearance shall be maintained around  boilers, 
generators, heaters, tanks, and related equipment and  appliances  so  as  to 
permit inspection, servicing, repair,  replacement,  and  visibility  of  all 
gauges.  When boilers are installed or replaced, clearances shall be provided 
to allow access for inspection, maintenance, and repair.  Passageways  around 
all sides of the boiler shall have an unobstructed width of not less than  24 
inches (610 mm), unless otherwise approved.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2003 AACS; 2007 AACS.


R 408.30937    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30937a   Rescinded.

  History:  1989 AACS; 1995 AACS; 
rescinded 1998-2000 AACS.


R 408.30938    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30938a   Rescinded.

  History:  1989 AACS; 1995 AACS.


R 408.30939    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30940    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30940a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.


R 408.30941    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30941a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30942    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30942a   Rescinded.

  History:  1989 AACS; 1995 AACS.


R 408.30943    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30943a   Rescinded.

  History:  1989 AACS; 1995 AACS.


R 408.30944    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30944a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30945    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30945a Ventilation; exhaust.
  Rule 945a.  Sections 401.4.2, 501.2.1 and 504.4 of the code are amended  to 
read as follows:
  401.4.2  Exhaust openings.  Outside exhaust openings shall be located so as 
not to create a nuisance.   Exhaust  openings  shall  not  be  directed  onto 
walkways.  Exhaust openings shall not terminate within 2 feet of a ventilated 
section in a soffit.
  501.2.1  Location of exhaust outlets.  The  termination  point  of  exhaust 
outlets and ducts discharging to the  outdoors  shall  be  located  with  the 
following minimum distances:
  1.  For ducts conveying explosive or flammable vapors, fumes, or dusts:  30 
feet (9144 mm) from property lines; 10 feet (3048 mm) from operable  openings 
into buildings; 6 feet (1829 mm) from exterior walls and roofs; 30 feet (9144 
mm) from combustible walls and operable openings into buildings which are  in 
the direction of the exhaust discharge; 10 feet  (3048  mm)  above  adjoining 
grade.
  2.  For other  product-conveying  outlets:  10  feet  (3048  mm)  from  the 
property lines; 3 feet (914 mm) from exterior walls and roofs; 10 feet  (3048 
mm) from operable openings into buildings; 10 feet (3048 mm) above  adjoining 
grade.
  3.  For environmental air duct exhaust:  3  feet  (914  mm)  from  property 
lines; 3 feet  (914  mm)  from  operable  openings  into  buildings  for  all 
occupancies other than group U, and 10 feet (3048  mm)  from  mechanical  air 
intakes.
  4.  For specific systems: For clothes dryer exhaust, see section 504.4; for 
kitchen hoods, see section  506.3;  for  dust,  stock  and  refuse  conveying 
systems, see section 511.2; and for subslab soil exhaust systems, see section 
512.4; for bathroom or kitchen exhaust in a residential dwelling see  section 
401.4.1.
  504.4  Exhaust installation.  Dryer exhaust ducts for clothes dryers  shall 
terminate on the outside of the building, shall not terminate within  4  feet 
of a ventilated section in a soffit, and shall be equipped with a back  draft 
damper.  Screens shall not be installed at the duct termination.  Ducts shall 
not be connected or installed with sheet metal screws or other fasteners that 
will obstruct the exhaust flow.  Clothes dryer exhaust  ducts  shall  not  be 
connected to a vent connector, vent, or chimney.  Clothes dryer exhaust ducts 
shall not extend into or pass through ducts or plenums.

  History: 2003 AACS; 2007 AACS.


R 408.30946    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30946a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30947    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30948    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30948a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30949    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30949a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30950    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30951    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30951a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30952    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30952a   Rescinded.

  History:  1989 AACS; 1995 AACS.


R 408.30953a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30954    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30954a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30955    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30955a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30956    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30956a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30957    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30958    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30958a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30959    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30960a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30962    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30962a   Rescinded.

   History:   1996 AACS; 1998-2000 AACS.


R 408.30963a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30964    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30964a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS.


R 408.30965    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30965a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30966    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30966a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30967    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30967a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30968    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30968a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30969    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30970a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30971    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30971a   Rescinded.

  History:  1989 AACS; 1992 AACS.


R 408.30972    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30972a   Rescinded.


  History:  1989 AACS; 1992 AACS.


R 408.30974    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30975a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30977a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS.


R 408.30980    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30981    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30982    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30982a   Rescinded.

  History:  1992 AACS; 1995 AACS.


R 408.30983a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30984    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30984a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30986    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30987a   Rescinded.

  History:  1989 AACS; 1995 AACS; 1998-2000 AACS.


R 408.30988    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30989    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30989a   Rescinded.

  History:  1989 AACS; 1992 AACS; 1995 AACS.


R 408.30990    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30992    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30992a   Rescinded.

  History:  1989 AACS; 1995 AACS.


R 408.30993    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30994    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30995    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30995a  Automatic sprinkler systems generally.
  Rule 995a.  Sections 1600.0, 1600.1, and 1600.2 are added to  the  code  to 
read as follows:
  1600.0.  Automatic sprinkler systems; fire suppression systems.
  1600.1   Scope.   The  provisions  of  this  article  provide  the  minimum 
requirements for the design and installation of automatic  sprinkler  systems 
in all occupancies, except for 1- and 2-family dwellings.
  1600.2.  Installations.  Installations shall  be  in  compliance  with  the 
provisions of the code.  Fire suppression systems shall be in compliance with 
the provisions of the building code and shall be installed in accordance with 
the code and NFPA-13-2002,  NFPA-13D-2002,  NFPA-13R-2002,  and  NFPA-24-2002 
installation of sprinkler systems, installation of sprinkler  systems  in  1- 
and 2-family dwellings and manufactured homes, and installation of  sprinkler 
systems in residential occupancies up to 4 stories in  height,  standards  of 
the national fire protection association listed in chapter 15.

  History:  1989 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 
2003 AACS; 2007 AACS.


R 408.30996    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30997    Rescinded.

  History:  1979 AC; 1989 AACS.



R 408.30998    Rescinded.

  History:  1979 AC; 1989 AACS.