780 CMR: 9 th Edition Massachusetts State Building Code. Presented to: BSA Codes Committee. DATE: January 20, 2016

Transcription

1 780 CMR: 9 th Edition Massachusetts State Building Code Presented to: BSA Codes Committee DATE: January 20, 2016

2 This course is registered with AIA CES for continuing professional education. Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-aia members are available upon request. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

3 Course Overview Review impactful changes to the base language between the 2009 and 2015 I-Codes International Building Code 2015 International Existing Building Code 2015 International Mechanical Code 2015 International Energy Conservation Code 2013 ASHRAE Standard 90.1 Grace Period, no longer 2012 Jurisdictions

4 Chapter 1: Conflicting Provisions between Codes and Standards 2015 IBC Section Conflicts. Where conflicts occur between provisions of this code and referenced codes and standards, the provisions of this code shall apply Provisions in Referenced Codes and Standards. Where the extent of the reference to a referenced code or standard includes subject matter that is within the scope of this code or the International Codes listed in Section 101.4, the provisions of this code or the International codes listed in Section 101.4, as applicable, shall take precedence over the provisions in the referenced code or standard.

5 Chapter 1: Flood zones 2015 IBC Section Determination of substantially improved or substantially damaged existing buildings and structures in flood hazard areas. For applications for reconstruction, rehabilitation, repair, alteration, addition or other improvement of existing buildings or structures located in flood hazard areas, the building official shall determine if the proposed work constitutes substantial improvement or repair of substantial damage. Where the building official determines that the proposed work constitutes substantial improvement or repair or substantial damage and where required by this code, the building official shall require the building to meet the requirements of Section Section 1612 references Flood Loads. Substantially Improved and Substantially Damaged are defined in Chapter 2 and by Federal Regulations. A substantial improvement is work that equals or exceeds 50% of the market value of the building.

6 Chapter 1: Change of Use or Occupancy 2009 IBC Section No building or structure shall be used or occupied, and no change in the existing occupancy classification of a building or structure or portion thereof shall be made, until the building official has issued a certificate of occupancy therefore as provided herein IBC Section No building or structure shall be used or occupied, and no change in the existing use or occupancy classification of a building or structure or portion thereof shall be made, until the building official has issued a certificate of occupancy therefore as provided herein.

7 Chapter 4: Egress Travel Through an Atrium 2015 IBC Section Exit Access Travel Distance Egress not through an atrium shall comply with Section 1017 Egress through an atrium at the level of discharge shall comply with Section 1017 Egress through an atrium not at the level of discharge shall not exceed 200 feet Maximum of 50% of interior exit stairways are permitted to egress through an atrium on the level of discharge

8 Chapter 5: General Building Height and Area Limitations 2009 IBC General. The building height and area shall not exceed the limits specified in Table IBC General. Unless otherwise specifically modified in Chapter 4 and this chapter, building height, number of stories and building area shall not exceed the limits specified in Sections 504 and 506

9 Chapter 5: General Building Height and Area Limitations

10 Chapter 5: General Building Height and Area Limitations

11 Chapter 5: General Building Height and Area Limitations

12 Chapter 5: Incidental Uses-General Provisions 2009 IBC Separation of incidental accessory occupancies. The incidental accessory occupancies listed in Table shall be separated from the remainder of the building or be equipped with an automatic fire-extinguishing system, or both, in accordance with Table IBC General. Incidental uses located within single occupancy or mixed occupancy buildings shall comply with the provisions of this section. Incidental uses are ancillary functions associated with a given occupancy that generally pose a greater level of risk to that occupancy and are limited to those uses listed in Table 509.

13 Chapter 5: Incidental Uses-General Provisions

14 Chapter 5: Horizontal Building Separation 2009 IBC Section Condition 2. The building below the horizontal assembly is no more than one story above grade plane IBC Section Condition 2, which limits the height of the building below the horizontal assembly, is deleted.

15 Chapter 6 One-Hour Substitution Table 601, Footnote d: An approved automatic sprinkler system in accordance with Section shall be allowed to be substituted for 1-hour fire-resistance rated construction, provided such system is not otherwise required by other provisions of the code OR used for an allowable area increase in accordance with Section or an allowable height increase in accordance with Section The 1-hour substitution for the fire resistance of exterior walls shall not be permitted.

16 Chapter 7: Structural Stability of Fire Walls 2009 IBC Structural stability. Fire walls shall have sufficient structural stability under fire conditions to allow collapse of construction on wither side without collapse of the wall for the duration of time indicated by the required fireresistance rating IBC Structural Stability. Fire walls shall be designed and constructed to allow collapse of the structure on either side without collapse of the wall under fire conditions. Fire walls designed and constructed in accordance with NFPA 221 shall be deemed to comply with this section.

17 Chapter 7: Vertical Openings Vertical openings in Section 708 of the 2009 IBC have been moved to Section 712. There was a significant reformatting of vertical openings between the 2009 and 2012 IBC. The code now places an emphasis on the presence of vertical openings rather than on shaft enclosures, recognizing that the use of shaft enclosures is just one of many acceptable protective measures that can be utilized to address the hazards related to vertical openings.

18 Chapter 7: Membrane Penetrations Section in 2009 IBC moved to Section in 2015 IBC and two exceptions are added: 6. Noncombustible items that are cast into concrete building elements and that do not penetrate both top and bottom surfaces of the element 7. The ceiling membrane of 1- and 2-hour fire-resistance-rated horizontal assemblies is permitted to be interrupted with the double wood top plate of a wall assembly that is sheathed with Type X gypsum wallboard, provided that all penetrating items through the double top plates are protected in accordance with Section or and the ceiling membrane is tight to the top plates.

19 Chapter 7: Ducts Transitioning between Shafts Section Ducts and Air Transfer Openings. Ducts transitioning horizontally between shafts shall not require a shaft enclosure provided that the duct penetration into each associated shaft is protected with dampers comply with this section. Ducts are now expressly allowed to exit a shaft, transition horizontally, and enter another shaft without continuous shaft construction.

20 Chapter 10: Reorganization KEY Yellow Reorganization Green Addition Blue Deletion

21 Chapter 10: Sections 1006 and 1007 Provisions in Sections 1014, 1015 and 1021 in the 2009 IBC relocated to Sections 1006 and 1007 in 2015 IBC. Provisions include: Numbers of exits and exit access doorways Exit and exit access doorway configuration

22 Chapter 10: Section Measurement Point. The separation distance required in Section shall be measured in accordance with the following: 1. The separation distance to exit or exit access doorways shall be measured to any point along the width of the doorway. 2. The separation distance to exit access stairways shall be measured to the closest riser. 3. The separation distance to exit access ramps shall be measured to the start of the ramp run.

23 Chapter 10: Stairs Exit Access Stairway. An interior stairway that is not a required interior exit stairway. Interior Exit Stairway. An exit component that serves to meet one or more means of egress design requirements, such as required number of exits or exit access travel distance, and provides for a protected path of egress travel to the exit discharge or public way.

24 Chapter 10: Stairway Extension 2009 IBC Extension. interior exit stairways and ramps are extended to an exit discharge or a public way by an exit passageway, the interior exit stairway and ramp shall be separated from the exit passageway by a fire barrier constructed in accordance with Section 707 or a horizontal assembly constructed in accordance with Section 711, or both IBC Exception 2. Separation between an interior exit stairway or ramp and the exit passageway extension shall not be required where there are no openings into the exit passageway extension.

25 Chapter 14: Water-Resistive Barriers 2015 IBC Section Vertical and lateral flame propagation. Exterior walls on buildings of Type I, II, III or IV construction that are greater than 40 feet (12,192 mm) in height above grade plane and contain a combustible waterresistive barrier shall be tested in accordance with and comply with the acceptance criteria of NFPA 285. For the purposes of this section, fenestration products and flashing of fenestration products shall not be considered part of the water-resistive barrier. Exceptions: Walls in which the water-resistive barrier is the only combustible component and: 1. The exterior wall has a wall covering of brick, concrete, stone, terra cotta, stucco or steel with minimum thicknesses in accordance with Table The water-resistive barrier has a Peak heat release rate < 150 kw/m 2 Total heat release < 20 MJ/m 2 Effective heat of combustion < 18 MJ/kg Flame spread index < 25 Smoke-developed index < 450

26 Chapter 30: Elevator Lobbies 2009 IBC Section Lobbies shall be provided where shaft enclosure connects >3 stories Lobby enclosure shall separate elevator shaft enclosure doors from each floor by fire partitions 2015 IBC Section 3006 Hoistway protection required where: No automatic sprinkler system Building contains Group I-1, I-2 or I-3 occupancy High-rise building with hoistway connecting >3 stories Hoistway protection includes: Enclosed elevator lobbies Additional door complying with Section Hoistway pressurization

27 Chapter 30: Standpipe Access 2009 IBC Standpipe Hose connection. A Class I standpipe hose connection in accordance with section 905 shall be provided in the exit enclosure having direct access from the fire service access elevator lobby IBC Standpipe Hose Connection. A Class I standpipe hose connection in accordance with section 905 shall be provided in the interior exit stairway and ramp having direct access from the fire service access elevator lobby Access. The exit enclosure containing the standpipe shall have access to the floor without passing through the fire service access elevator lobby

28 International Energy Conservation Code

29 2015 International Energy Conservation Code (IECC) Chapter 4 Commercial Energy Efficiency Section 401: General Section 402: Building Envelope Requirements Section 403: Building Mechanical Envelope Section 404: Service Water Heating Section 405: Electric Power and Lighting Systems Section 406: Additional Efficiency Package Options Section 407: Total Building Performance Section 408: System Commissioning

30 Section C401: General C401.2 Application Additional requirements of Section 406 Additional Energy Package Options have been added to the prescriptive compliance method Total Building Performance compliance method requires the building energy cost to be no more than 85% of the standard reference design building

31 Section C402: Building Envelope Requirements Table C Opaque Thermal Envelope Assembly Walls above grade: U-value for Metal Buildings change from to Heated Slabs: F-factor changes from 0.86 to from 0.65 Unheated Slabs: F-factor changes from 0.73 to from 0.54 C Fenestration Maximum Area Maximum Vertical fenestration area is limited to 30% (reduction from previous 40%) with increase to 40% when automatic daylight control is provided) C402.5 Air Leakage Thermal envelope Continues Air Barrier throughout the building thermal envelope requirement is now in the Code Fenestration air leakage criteria are established and testing standards are identified

32 Section C403: Building Mechanical Systems Table C Minimum Efficiency Requirements Increase in minimum efficiency requirements of the HVAC Equipment C Demand Controlled Ventilation Occupancy of the spaces requiring DCV is reduced from 40 to 25 people per 1000 SF C403.2.Energy Recovery Ventilation Systems No longer based on system capacity >5000 CFM and %% OA>70%. Now depends on annual hours of operation (< or > than 8000 hours), climate zone, system capacity and % of outside air. For ventilation systems operating over 8000 hours per year (i.e. residential ventilation) in Massachusetts energy recovery is required for ALL system capacities, with ANY %% of outside air C &2 Economizer Control Two-position economizer control is no longer allowed

33 Section C405: Electrical Power and Lighting Systems C405.1 Electric Power and Lighting Systems General In dwelling units in commercial buildings minimum number of lighting fixtures containing high efficiency lamps is increased from 50% to 75% C405.2 Lighting controls The lighting control requirements are significantly expanded Lighting Controls Required include Occupancy Sensors, Time Control, Daylight Responsive Controls, Accent Lighting Controls, Exterior Lighting Controls. C Daylight -Responsive Controls Except for healthcare and dwelling and sleeping units daylight responsive controls are required for all spaces with more than 150W of general lighting Excludes Decorative Lighting, Sleeping Areas, Patient Areas in Health Care

34 Section C405: Electrical Power and Lighting Systems C405.4 Interior Lighting Power Requirements A Space-by-space method of compliance is introduced in addition to the Building Area Method of compliance. LPD allowances have been reduced (i.e. Office Building went from 0.9 to 0.82 w/sf)

35 ASHRAE : Electrical Power and Lighting Systems Zones for exterior lighting are added. Garages required to have automatic shutoff and dimming

36 Section C405: Electrical Power and Lighting Systems Control requirements for exterior lighting.

37 Section C406: Additional Efficiency Package Options C406.1 Requirements Prescriptive compliance method will in addition require the building to comply with one of the following: Increase efficiency of HVAC equipment by 10% above minimum requirements Reduce LPD to 90% of code allowance Enhanced digital lighting controls Generate on-site renewable energy - no less than 0.5 watts per SF of conditioned area Dedicated Outdoor Air System (DOAS) with supply air temperature reset control High Efficiency Service Water heating no less than 60% of hot water requirements to be satisfied by waste heat recovery or solar water heating system

38 Section C407: Total Building Performance Total Building Performance compliance method requires the building energy cost to be no more than 85% of the standard reference design building

39 Section C407: Total Building Performance Example:

40 Section C407: Total Building Performance Example: Key ASHRAE Baseline Modeling Inputs ASHRAE Appendix G WWR 40% Glazing Type Double Pane U-Glass = 0.42 SHGC= 0.40 Mechanical System Floor by Floor Chilled Water VAV with Hot Water Heating LPD = 0.82 (Per ASHRAE ) Boiler 82% Efficient Chiller kw/ton Full Load and IPLV Miscellaneous Load (Office Power) 1.06 W/GSF

41 Section C407: Total Building Performance Example: FANS 10% Baseline HOT WTR 3% LIGHTS 20% PUMPS 8% COOLING 13% EQUIP 22% HEATING 24%

42 Section C407: Total Building Performance Example: Proposed Building Modeling Iterations Increase WWR 60% with ASHRAE Baseline Glass Improve Glazing Triple Pane (Viracon VE1-85) U-winter = 0.14 U-summer = 0.14 SHGC= 0.44 VT= 65% Condensing Boiler Plant 95% Seasonal Efficiency Magnetic Bearing (Or Equivalent) Chiller kw/ton Full load and IPLV Enthalpy Wheel Ventilation Air Energy Recovery 65% Efficiency Daylight Harvesting

43 Section C407: Total Building Performance Example:

44 Section C407: Total Building Performance Example: Energy Recovery Baseline

45 Section C407: Total Building Performance Example: Energy Recovery Baseline

46 Section C407: Total Building Performance Example: Energy Recovery Baseline

47 Section C407: Total Building Performance Example:

48 Section C408: System Commissioning The IECC nowrequires commissioning of the mechanical and electrical systems

49 International Mechanical Code

50 Chapter 2 International Mechanical Code 2009 IMC ENVIRONMENTAL AIR. Air that is conveyed to or from occupied areas through ducts which are not part of the heating or airconditioning system, such as ventilation for human usage, domestic kitchen range exhaust, bathroom exhaust, and domestic clothes dryer exhaust IMC ENVIRONMENTAL AIR. Air that is conveyed to or from occupied areas through ducts which are not part of the heating or airconditioning system, such as ventilation for human usage, domestic kitchen range exhaust, bathroom exhaust, domestic clothes dryer exhaust, and parking garage exhaust. Further clarifies that parking garage exhaust outlets can be 3 feet from a property line, 3 feet from operable windows and 10 feet from mechanical air intakes.

51 2015 International Mechanical Code (IMC) Equipment and Appliances on Roofs or Elevated Structures Permanent access is required to equipment and appliances on a roof or elevated structure higher than 16 feet above grade Ventilation Required Mechanical ventilation is required in the dwelling units if infiltration is less than 5 ACH when tested in accordance with IECC. Maximum envelope leakage allowed by IEEC is less than 0.4 CFM/SF which typically will results in less than 5 ACH. Mechanical ventilation implicitly is required for all residential dwelling units Intake Opening Locations Minimum clearance between an air intake opening and any public way is measured from the opening to the lot line, not center line of the public way

52 2015 International Mechanical Code (IMC) Example of exterior wall leakage rate 0.4 CFM/SF of exterior skin VS 5 AC/hr for allowable natural ventilation of residential units

53 2015 IMC - Continuation Enclosed Parking garages ventilation CO detectors are required to be used in conjunction with NO2 detectors 505 Domestic Kitchen Exhaust Where ducted hoods are used they should be exhausted independent of all other systems, the cleanout shall be provided at the bottom of the shaft, no offsets of ductwork in the shafts (similar to dryer exhaust)

54 Questions This concludes The American Institute of Architects Continuing Education Systems Course Rockwood Edwards, P.E. President, Cosentini Code Robert Leber, P.E. Senior Vice President Rockwood Edwards, P.E. Vice President Sr. Fire Protection Engineer, Cosentin

55