Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 34 - Existing Buildings and Structures
Section 3412 - COMPLIANCE ALTERNATIVES
Subsection 3412.6 - Evaluation process

Universal Citation: 780 CMR MA Code of Regs 3412.6

Current through Register 1531, September 27, 2024

The evaluation process specified herein shall be followed in its entirety to evaluate existing buildings. Table 3412.7 shall be utilized for tabulating the results of the evaluation. References to other sections of this code indicate that compliance with those sections is required in order to gain credit in the evaluation herein outlined. In applying this section to a building with mixed occupancies, where the separation between the mixed occupancies does not qualify for any category indicated in Section 3412.6.16, the score for each occupancy shall be determined and the lower score determined for each section of the evaluation process shall apply to the entire building.

Where the separation between mixed occupancies qualifies for any category indicated in Section 3412.6.16, the score for each occupancy shall apply to each portion of the building based on the occupancy of the space.

3412.6.1 Building height. The value for building height shall be the lesser value determined by the formula in Section 3412.6.1.1. Chapter 5 shall be used to determine the allowable height of the building, including allowable increases due to automatic sprinklers as provided for in Section 504.2. Subtract the actual building height in feet (mm) from the allowable height and divide by 121/2 feet (3810 mm). Enter the height value and its sign (positive or negative) in Table 3412.7 under Safety Parameter 3412.6.1, Building Height, for fire safety, means of egress and general safety. The maximum score for a building shall be 10.

3412.6.1.1 Height formula. The following formulas shall be used in computing the building height value.

Height value, feet =
Click to view image		 (Equation 34-1)

Height value, stories = (AS - EBS) * CF (Equation 34-2)

where:

AH = Allowable height in feet (mm) from Table 503.

EBH = Existing building height in feet (mm).

AS = Allowable height in stories from Table 503.

EBS = Existing building height in stories.

CF = 1 if (AH) - (EBH) is positive.

CF = Construction-type factor shown in Table 3412.6.6(2) if (AH) - (EBH) is negative.

Note: Where mixed occupancies are separated and individually evaluated as indicated in Section 3412.6, the values AH, AS, EBH and EBS shall be based on the height of the occupancy being evaluated.

3412.6.2 Building area. The value for building area shall be determined by the formula in Section 3412.6.2.2. Section 503 and the formula in Section 3412.6.2.1 shall be used to determine the allowable area of the building. This shall include any allowable increases due to frontage and automatic sprinklers as provided for in Section 506. Subtract the actual building area in square feet (m2) from the allowable area and divide by 1,200 square feet (111.5 m2). Enter the area value and its sign (positive or negative) in Table 3412.7 under Safety Parameter 3412.6.2, Building Area, for fire safety, means of egress and general safety. In determining the area value, the maximum permitted positive value for area is 50 percent of the fire safety score as listed in Table 3412.8, Mandatory Safety Scores.

3412.6.2.1 Allowable area formula. The following formula shall be used in computing allowable area:

Aa=(1 + If + Is) * At (Equation 34-3)

where:

Aa = Allowable area.

At = Tabular area per story in accordance with Table 503 (square feet).

Is = Area increase factor for sprinklers (Section 506.3).

If = Area increase factor for frontage (Section 506.2).

3412.6.2.2 Area formula. The following formula shall be used in computing the area value. Determine the area value for each occupancy floor area on a floor-by-floor basis. For each occupancy, choose the minimum area value of the set of values obtained for the particular occupancy.

Click to view image (Equation 34-4)

where:

i = Value for an individual separated occupancy on a floor.

n = Number of separated occupancies on a floor.

3412.6.3 Compartmentation. Evaluate the compartments created by fire barriers or horizontal assemblies that comply with Sections 3412.6.3.1 and 3412.6.3.2 and are exclusive of the wall elements considered under Sections 3412.6.4 and 3412.6.5. Conforming compartments shall be figured as the net area and do not include shafts, chases, stairways, walls or columns. Using Table 3412.6.3, determine the appropriate compartmentation value (CV) and enter that value into Table 3412.7 under Safety Parameter 3412.6.3, Compartmentation, for fire safety, means of egress and general safety.

TABLE 3412.6.3 COMPARTMENTATION VALUES

OCCUPANCY CATEGORIESa
a
Compartment size
equal to or greater than
15,000 square feet		 b
Compartment
size of
10,000 square feet		 c
Compartment
size of
7,500 square feet		 d
Compartment
size of
5,000 square feet		 e
Compartment
size of
2,500 square feet or less
A-1, A-3 0 6 10 14 18
A-2 0 4 10 14 18
A-4, B, E, S-2 0 5 10 15 20
F, M, R, S-1 0 4 10 16 22

For SI: 1 square foot = 0.0929 m2.
a. For areas between categories, the compartmentation value shall be obtained by linear interpolation.
3412.6.3.1 Wall construction. A wall used to create separate compartments shall be a fire barrier conforming to Section 707 with a fire-resistance rating of not less than 2 hours. Where the building is not divided into more than one compartment, the compartment size shall be taken as the total floor area on all floors. Where there is more than one compartment within a story, each compartmented area on such story shall be provided with a horizontal exit conforming to Section 1025. The fire door serving as the horizontal exit between compartments shall be so installed, fitted and gasketed that such fire door will provide a substantial barrier to the passage of smoke.

3412.6.3.2 Floor/ceiling construction. A floor/ceiling assembly used to create compartments shall conform to Section 712 and shall have a fire-resistance rating of not less than 2 hours.

3412.6.4 Tenant and dwelling unit separations. Evaluate the fire-resistance rating of floors and walls separating tenants, including dwelling units, and not evaluated under Sections 3412.6.3 and 3412.6.5. Under the categories and occupancies in Table 3412.6.4, determine the appropriate value and enter that value in Table 3412.7 under Safety Parameter 3412.6.4, Tenant and Dwelling Unit Separations, for fire safety, means of egress and general safety.

TABLE 3412.6.4 SEPARATION VALUES

OCCUPANCY CATEGORIES
a b c d e
A-1 0 0 0 0 1
A-2 -5 -3 0 1 3
A-3, A-4, B, E, F, M, S-1 -4 -3 0 2 4
R -4 -2 0 2 4
S-2 -5 -2 0 2 4
3412.6.4.1 Categories. The categories for tenant and dwelling unit separations are:
1. Category a-No fire partitions; incomplete fire partitions; no doors; doors not self-closing or automatic-closing.

2. Category b-Fire partitions or floor assemblies with less than a 1-hour fire-resistance rating or not constructed in accordance with Sections 709 and 712, respectively.

3. Category c-Fire partitions with a 1-hour or greater fire-resistance rating constructed in accordance with Section 709 and floor assemblies with a 1-hour but less than 2-hour fire-resistance rating constructed in accordance with Section 712, or with only one tenant within the floor area.

4. Category d-Fire barriers with a 1-hour but less than 2-hour fire-resistance rating constructed in accordance with Section 707 and floor assemblies with a 2-hour or greater fire-resistance rating constructed in accordance with Section 712.

5. Category e-Fire barriers and floor assemblies with a 2-hour or greater fire-resistance rating and constructed in accordance with Sections 707 and 712, respectively.

3412.6.5 Corridor walls. Evaluate the fire-resistance rating and degree of completeness of walls which create corridors serving the floor, and constructed in accordance with Section 1018. This evaluation shall not include the wall elements considered under Sections 3412.6.3 and 3412.6.4. Under the categories and groups in Table 3412.6.5, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.5, Corridor Walls, for fire safety, means of egress and general safety.

TABLE 3412.6.5 CORRIDOR WALL VALUES

OCCUPANCY CATEGORIES
a b ca da
A-1 -10 -4 0 2
A-2 -30 -12 0 2
A-3, F, M, R, S-1 -7 -3 0 2
A-4, B, E, S-2 -5 -2 0 5

a. Corridors not providing at least one-half the travel distance for all occupants on a floor shall use Category b.
3412.6.5.1 Categories. The categories for Corridor Walls are:
1. Category a-No fire partitions; incomplete fire partitions; no doors; or doors not self-closing.

2. Category b-Less than 1-hour fire-resistance rating or not constructed in accordance with Section 709.4.

3. Category c-1-hour to less than 2-hour fire-resistance rating, with doors conforming to Section 715 or without corridors as permitted by Section 1018.

4. Category d-2-hour or greater fire-resistance rating, with doors conforming to Section 715.

3412.6.6 Vertical openings. Evaluate the fire-resistance rating of exit enclosures, hoistways, escalator openings and other shaft enclosures within the building, and openings between two or more floors. Table 3412.6.6(1) contains the appropriate protection values. Multiply that value by the construction type factor found in Table 3412.6.6(2). Enter the vertical opening value and its sign (positive or negative) in Table 3412.7 under Safety Parameter 3412.6.6, Vertical Openings, for fire safety, means of egress, and general safety. If the structure is a one-story building or if all the unenclosed vertical openings within the building conform to the requirements of Section 708, enter a value of 2. The maximum positive value for this requirement shall be 2.

3412.6.6.1 Vertical opening formula. The following formula shall be used in computing vertical opening value.

VO = PV * CF (Equation 34-5)

where:

VO = Vertical opening value.

PV = Protection value [Table 3412.6.6(1)].

CF = Construction type factor [Table 3412.6.6(2)].

TABLE 3412.6.6(1) VERTICAL OPENING PROTECTION VALUE

PROTECTION VALUE
None (unprotected opening) -2 times number floors connected
Less than 1 hour -1 times number floors connected
1 to less than 2 hours 1
2 hours or more 2

TABLE 3412.6.6(2) CONSTRUCTION-TYPE FACTOR

FACTOR

TYPE OF CONSTRUCTION
IA IB IIA IIB IIIA IIIB IV VA VB
1.2 1.5 2.2 3.5 2.5 3.5 2.3 3.3 7

3412.6.7 HVAC systems. Evaluate the ability of the HVAC system to resist the movement of smoke and fire beyond the point of origin. Under the categories in Section 3412.6.7.1, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.7, HVAC Systems, for fire safety, means of egress and general safety.

3412.6.7.1 Categories. The categories for HVAC systems are:
1. Category a-Plenums not in accordance with Section 602 of the International Mechanical Code. -10 points.

2. Category b-Air movement in egress elements not in accordance with Section 1018.5. - points.

3. Category c-Both categories a and b are applicable. -15 points.

4. Category d-Compliance of the HVAC system with Section 1018.5 and Section 602 of the International Mechanical Code. 0 points.

5. Category e-Systems serving one story; or a central boiler/chiller system without ductwork connecting two or more stories. 5 points.

3412.6.8 Automatic fire detection. Evaluate the smoke detection capability based on the location and operation of automatic fire detectors in accordance with Section 907 and the International Mechanical Code. Under the categories and occupancies in Table 3412.6.8, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.8, Automatic Fire Detection, for fire safety, means of egress and general safety.

TABLE 3412.6.8 AUTOMATIC FIRE DETECTION VALUES

OCCUPANCY CATEGORIES
a b c d e
A-1, A-3, F, M, R, S-1 -10 -5 0 2 6
A-2 -25 -5 0 5 9
A-4, B, E, S-2 -4 -2 0 4 8
3412.6.8.1 Categories. The categories for automatic fire detection are:
1. Category a-None.

2. Category b-Existing smoke detectors in HVAC systems and maintained in accordance with the International Fire Code.

3. Category c-Smoke detectors in HVAC systems. The detectors are installed in accordance with the requirements for new buildings in the International Mechanical Code.

4. Category d-Smoke detectors throughout all floor areas other than individual sleeping units, tenant spaces and dwelling units.

5. Category e-Smoke detectors installed throughout the floor area.

3412.6.9 Fire alarm systems. Evaluate the capability of the fire alarm system in accordance with Section 907. Under the categories and occupancies in Table 3412.6.9, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.9, Fire Alarm Systems, for fire safety, means of egress and general safety.

TABLE 3412.6.9 FIRE ALARM SYSTEM VALUES

OCCUPANCY CATEGORIES
a ba c d
A-1, A-2, A-3, A-4, B, E, R -10 -5 0 5
F, M, S 0 5 10 15

a. For buildings equipped throughout with an automatic sprinkler system, add 2 points for activation by a sprinkler waterflow device.
3412.6.9.1 Categories. The categories for fire alarm systems are:
1. Category a-None.

2. Category b-Fire alarm system with manual fire alarm boxes in accordance with Section 907.3 and alarm notification appliances in accordance with Section 907.5.2.

3. Category c-Fire alarm system in accordance with Section 907.

4. Category d-Category c plus a required emergency voice/alarm communications system and a fire command center that conforms to Section 403.4.5 and contains the emergency voice/alarm communications system controls, fire department communication system controls and any other controls specified in Section 911 where those systems are provided.

3412.6.10 Smoke control. Evaluate the ability of a natural or mechanical venting, exhaust or pressurization system to control the movement of smoke from a fire. Under the categories and occupancies in Table 3412.6.10, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.10, Smoke Control, for means of egress and general safety.

TABLE 3412.6.10 SMOKE CONTROL VALUES

OCCUPANCY CATEGORIES
a b c d e f
A-1, A-2, A-3 0 1 2 3 6 6
A-4, E 0 0 0 1 3 5
B, M, R 0 2a 3a 3a 3a 4a
F, S 0 2a 2a 3a 3a 3a

a. This value shall be 0 if compliance with Category d or e in Section 3412.6.8.1 has not been obtained.
3412.6.10.1 Categories. The categories for smoke control are:
1. Category a-None.

2. Category b-The building is equipped throughout with an automatic sprinkler system. Openings are provided in exterior walls at the rate of 20 square feet (1.86 m2) per 50 linear feet (15 240 mm) of exterior wall in each story and distributed around the building perimeter at intervals not exceeding 50 feet (15 240 mm). Such openings shall be readily openable from the inside without a key or separate tool and shall be provided with ready access thereto. In lieu of operable openings, clearly and permanently marked tempered glass panels shall be used.

3. Category c-One enclosed exit stairway, with ready access thereto, from each occupied floor of the building. The stairway has operable exterior windows and the building has openings in accordance with Category b.

4. Category d-One smokeproof enclosure and the building has openings in accordance with Category b.

5. Category e-The building is equipped throughout with an automatic sprinkler system. Each floor area is provided with a mechanical air-handling system designed to accomplish smoke containment. Return and exhaust air shall be moved directly to the outside without recirculation to other floor areas of the building under fire conditions. The system shall exhaust not less than six air changes per hour from the floor area. Supply air by mechanical means to the floor area is not required. Containment of smoke shall be considered as confining smoke to the fire area involved without migration to other floor areas. Any other tested and approved design which will adequately accomplish smoke containment is permitted.

6. Category f-Each stairway shall be one of the following: a smokeproof enclosure in accordance with Section 1022.9; pressurized in accordance with Section 909.20.5 or shall have operable exterior windows.

3412.6.11 Means of egress capacity and number. Evaluate the means of egress capacity and the number of exits available to the building occupants. In applying this section, the means of egress are required to conform to the following sections of this code: 1003.7, 1004, 1005.1, 1014.2, 1014.3, 1015.2, 1021, 1025.1, 1027.2, 1027.6, 1028.2, 1028.3, 1028.4 and 1029 [except that the minimum width required by this section shall be determined solely by the width for the required capacity in accordance with Table 3412.6.11(1)]. The number of exits credited is the number that is available to each occupant of the area being evaluated. Existing fire escapes shall be accepted as a component in the means of egress when conforming to Section 3406. Under the categories and occupancies in Table 3412.6.11(2), determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.11, Means of Egress Capacity, for means of egress and general safety.

TABLE 3412.6.11(1) EGRESS WIDTH PER OCCUPANT SERVED

OCCUPANCY WITHOUT SPRINKLER SYSTEM WITH SPRINKLER SYSTEMa
Stairways
(inches per occupant)		 Other egress components
(inches per occupant)		 Stairways
(inches per occupant)		 Other egress components
(inches per occupant)
Occupancies other than those listed below 0.3 0.2 0.2 0.15
Hazardous: H-1, H-2, H-3 and H-4 Not Permitted Not Permitted 0.3 0.2
Institutional: I-2 Not Permitted Not Permitted 0.3 0.2

For SI: 1 inch = 25.4 mm.
a. Buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2.

TABLE 3412.6.11(2) MEANS OF EGRESS VALUES

OCCUPANCY CATEGORIES
aa b c d e
A-1, A-2, A-3, A-4, E -10 0 2 8 10
B, F, S -1 0 0 0 0
M -3 0 1 2 4
R -3 0 0 0 0

a. The values indicated are for buildings six stories or less in height. For buildings over six stories above grade plane, add an additional -10 points.
3412.6.11.1 Categories. The categories for Means of Egress Capacity and number of exits are:
1. Category a-Compliance with the minimum required means of egress capacity or number of exits is achieved through the use of a fire escape in accordance with Section 3406.

2. Category b-Capacity of the means of egress complies with Section 1004 and the number of exits complies with the minimum number required by Section 1021.

3. Category c-Capacity of the means of egress is equal to or exceeds 125 percent of the required means of egress capacity, the means of egress complies with the minimum required width dimensions specified in the code and the number of exits complies with the minimum number required by Section 1021.

4. Category d-The number of exits provided exceeds the number of exits required by Section 1021. Exits shall be located a distance apart from each other equal to not less than that specified in Section 1015.2.

5. Category e-The area being evaluated meets both Categories c and d.

3412.6.12 Dead ends. In spaces required to be served by more than one means of egress, evaluate the length of the exit access travel path in which the building occupants are confined to a single path of travel. Under the categories and occupancies in Table 3412.6.12, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.12, Dead Ends, for means of egress and general safety.

TABLE 3412.6.12 DEAD-END VALUES

OCCUPANCY CATEGORIESa
a b c
A-1, A-3, A-4, B, E, F, M, R, S -2 0 2
A-2, E -2 0 2

a. For dead-end distances between categories, the dead-end value shall be obtained by linear interpolation.
3412.6.12.1 Categories. The categories for dead ends are:
1. Category a-Dead end of 35 feet (10 670 mm) in nonsprinklered buildings or 70 feet (21 340 mm) in sprinklered buildings.

2. Category b-Dead end of 20 feet (6096 mm); or 50 feet (15 240 mm) in Group B in accordance with Section 1018.4, Exception 2.

3. Category c - No dead ends; or ratio of length to width (l/w) is less than 2.5:1.

3412.6.13 Maximum exit access travel distance. Evaluate the length of exit access travel to an approved exit. Determine the appropriate points in accordance with the following equation and enter that value into Table 3412.7 under Safety Parameter 3412.6.13, Maximum Exit Access Travel Distance, for means of egress and general safety. The maximum allowable exit access travel distance shall be determined in accordance with Section 1016.1.

Click to view image (Equation 34-6)

3412.6.14 Elevator control. Evaluate the passenger elevator equipment and controls that are available to the fire department to reach all occupied floors. Elevator recall controls shall be provided in accordance with the International Fire Code. Under the categories and occupancies in Table 3412.6.14, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.14, Elevator Control, for fire safety, means of egress and general safety. The values shall be zero for a single-story building.

TABLE 3412.6.14 ELEVATOR CONTROL VALUES

ELEVATOR TRAVEL CATEGORIES
a b c d
Less than 25 feet of travel above or below the primary level of elevator access for emergency fire-fighting or rescue personnel -2 0 0 +2
Travel of 25 feet or more above or below the primary level of elevator access for emergency fire-fighting or rescue personnel -4 NP 0 +4

For SI: 1 foot = 304.8 mm.
3412.6.14.1 Categories. The categories for elevator controls are:
1. Category a-No elevator.

2. Category b-Any elevator without Phase I and II recall.

3. Category c-All elevators with Phase I and II recall as required by the International Fire Code.

4. Category d-All meet Category c; or Category b where permitted to be without recall; and at least one elevator that complies with new construction requirements serves all occupied floors.

3412.6.15 Means of egress emergency lighting. Evaluate the presence of and reliability of means of egress emergency lighting. Under the categories and occupancies in Table 3412.6.15, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.15, Means of Egress Emergency Lighting, for means of egress and general safety.

TABLE 3412.6.15 MEANS OF EGRESS EMERGENCY LIGHTING VALUES

NUMBER OF EXITS REQUIRED BY SECTION 1015 CATEGORIES
a b c
Two or more exits NP 0 4
Minimum of one exit 0 1 1
3412.6.15.1 Categories. The categories for means of egress emergency lighting are:
1. Category a-Means of egress lighting and exit signs not provided with emergency power in accordance with Chapter 27.

2. Category b-Means of egress lighting and exit signs provided with emergency power in accordance with Chapter 27.

3. Category c-Emergency power provided to means of egress lighting and exit signs which provides protection in the event of power failure to the site or building.

3412.6.16 Mixed occupancies. Where a building has two or more occupancies that are not in the same occupancy classification, the separation between the mixed occupancies shall be evaluated in accordance with this section. Where there is no separation between the mixed occupancies or the separation between mixed occupancies does not qualify for any of the categories indicated in Section 3412.6.16.1, the building shall be evaluated as indicated in Section 3412.6 and the value for mixed occupancies shall be zero. Under the categories and occupancies in Table 3412.6.16, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.16, Mixed Occupancies, for fire safety and general safety. For buildings without mixed occupancies, the value shall be zero.

TABLE 3412.6.16 MIXED OCCUPANCY VALUESa

OCCUPANCY CATEGORIES
a b c
A-1, A-2, R -10 0 10
A-3, A-4, B, E, F, M, S -5 0 5

a. For fire-resistance ratings between categories, the value shall be obtained by linear interpolation.
3412.6.16.1 Categories. The categories for mixed occupancies are:
1. Category a-Occupancies separated by minimum 1-hour fire barriers or minimum 1-hour horizontal assemblies, or both.

2. Category b-Separations between occupancies in accordance with Section 508.4.

3. Category c-Separations between occupancies having a fire-resistance rating of not less than twice that required by Section 508.4.

3412.6.17 Automatic sprinklers. Evaluate the ability to suppress a fire based on the installation of an automatic sprinkler system in accordance with Section 903.3.1.1. "Required sprinklers" shall be based on the requirements of this code. Under the categories and occupancies in Table 3412.6.17, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.17, Automatic Sprinklers, for fire safety, means of egress divided by 2 and general safety.

TABLE 3412.6.17 SPRINKLER SYSTEM VALUES

OCCUPANCY CATEGORIES
a b c d e f
A-1, A-3, F, M, R, S-1 -6 -3 0 2 4 6
A-2 -4 -2 0 1 2 4
A-4, B, E, S-2 -12 -6 0 3 6 12
3412.6.17.1 Categories. The categories for automatic sprinkler system protection are:
1. Category a-Sprinklers are required throughout; sprinkler protection is not provided or the sprinkler system design is not adequate for the hazard protected in accordance with Section 903.

2. Category b-Sprinklers are required in a portion of the building; sprinkler protection is not provided or the sprinkler system design is not adequate for the hazard protected in accordance with Section 903.

3. Category c-Sprinklers are not required; none are provided.

4. Category d-Sprinklers are required in a portion of the building; sprinklers are provided in such portion; the system is one which complied with the code at the time of installation and is maintained and supervised in accordance with Section 903.

5. Category e-Sprinklers are required throughout; sprinklers are provided throughout in accordance with Chapter 9.

6. Category f-Sprinklers are not required throughout; sprinklers are provided throughout in accordance with Chapter 9.

3412.6.18 Standpipes. Evaluate the ability to initiate attack on a fire by making a supply of water available readily through the installation of standpipes in accordance with Section 905. Required standpipes shall be based on the requirements of this code. Under the categories and occupancies in Table 3412.6.18, determine the appropriate value and enter that value into Table 3412.7 under Safety Parameter 3412.6.18, Standpipes, for fire safety, means of egress and general safety.

TABLE 3412.6.18 STANDPIPE SYSTEM VALUES

OCCUPANCY CATEGORIES
aa b c d
A-1, A-3, F, M, R, S-1 -6 0 4 6
A-2 -4 0 2 4
A-4, B, E, S-2 -12 0 6 12

a. This option cannot be taken if Category a or b in Section 3412.6.17 is used.
3412.6.18.1 Standpipe. The categories for standpipe systems are:
1. Category a-Standpipes are required; standpipe is not provided or the standpipe system design is not in compliance with Section 905.3.

2. Category b-Standpipes are not required; none are provided.

3. Category c-Standpipes are required; standpipes are provided in accordance with Section 905.

4. Category d-Standpipes are not required; standpipes are provided in accordance with Section 905.

3412.6.19 Incidental accessory occupancy. Evaluate the protection of incidental accessory occupancies in accordance with Section 508.2.5. Do not include those where this code requires suppression throughout the buildings, including covered mall buildings, high-rise buildings, public garages and unlimited area buildings. Assign the lowest score from Table 3412.6.19 for the building or floor area being evaluated and enter that value into Table 3412.7 under Safety Parameter 3412.6.19, Incidental Accessory Occupancy, for fire safety, means of egress and general safety. If there are no specific occupancy areas in the building or floor area being evaluated, the value shall be zero.

TABLE 3412.6.19 INCIDENTAL ACCESSORY OCCUPANCY VALUESa

PROTECTION REQUIRED BY TABLE 508.2.5 PROTECTION PROVIDED
None 1 Hour AFSS AFSS with SP 1 Hour and AFSS 2 Hours 2 Hours and AFSS
2 Hours and AFSS -4 -3 -2 -2 -1 -2 0

2 Hours, or 1 Hour and AFSS

 -3 -2 -1 -1 0 0 0

1 Hour and AFSS

 -3 -2 -1 -1 0 -1 0

1 Hour

 -1 0 -1 0 0 0 0

1 Hour, or AFSS with SP

 -1 0 -1 0 0 0 0
AFSS with SP -1 -1 -1 0 0 -1 0
1 Hour or AFSS -1 0 0 0 0 0 0

a. AFSS = Automatic fire suppression system; SP = Smoke partitions (See Section 508.2.5).
Note: For Table 3412.7, see next page.

Disclaimer: These regulations may not be the most recent version. Massachusetts may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.