G304.4.1.4 Subgrade spaces to remain.

Where an existing emergency vehicle garage or fire, rescue, ambulance, or police station building is undergoing substantial improvement or an increase in the degree of noncompliance, the existing subgrade space shall be provided with a sump pump system, designed to be fully submerged and remain operational post-flood-event to remove flood waters after a storm surge has receded. Such pump system shall be designed with the pump controller located above the design flood elevation and all electrical wiring below the design flood elevation shall be listed and marked for use with a submersible pump. The pump system shall be connected to a standby power source, which shall be elevated above the design flood elevation.

G304.5 Additional construction standards with respect to connections for temporary external generators, boilers and chillers.

In addition to the other requirements of this appendix, connections for temporary external generators, boilers and chillers shall be provided in accordance with Sections G304.5.1 through G304.5.4.

G304.5.1 Group I-1 and adult homes, enriched housing, community residences and intermediate care facilities.

An occupancy that is classified as Group I-1, or that is an adult home, enriched housing, community residence or intermediate care facility and classified as Group R pursuant to an exception to Section 308.3.1 or 308.3.2, shall comply with the following requirements:

   1.   Connections for temporary external generators. Electrical connections shall be provided allowing for the connection of temporary external generators capable of providing power for at least 72 hours for, at a minimum, the following systems:

      1.1.   Exit signs and means of egress illumination required by Chapter 10 and serving such occupancy;

      1.2.   Fire alarm systems serving such occupancy;

      1.3.   For buildings having occupied floors located more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access, at least one elevator that serves all floors; and

      1.4.   Lighting in such occupancy, sufficient to maintain illumination in accordance with Section 1205.3, for (i) spaces primarily used for the provision of medical services to persons, including, but not limited to, consultation, evaluation, monitoring and treatment services and (ii) spaces intended to be used by persons for sleeping purposes.

      Exception: Connections for temporary external generators shall not be required for buildings with emergency or standby power systems that are permanently installed above the design flood elevation specified in Table 7-1 of ASCE 24 and capable of providing power for at least 72 hours to the systems identified in Item 1 of Section G304.5.1. Natural gas shall be a permitted fuel supply.

   2.   Flood protection for temporary external generator connections. Electrical connections installed in accordance with Item 1 of Section G304.5.1 shall be located at or above the design flood elevation specified in Table 7-1 of ASCE 24.

   3.   Emergency connection plan. Prior to sign-off of work by the department, a plan shall be submitted to the department that identifies how the temporary external generators will be connected and capable of providing power for the occupancy in accordance with Item 1 of Section G304.5.1 within 72 hours after failure of the normal power supply.

G304.5.2 Group I-2 hospitals.

An occupancy that is a Group I-2 hospital shall comply with the following requirements:

   1.   Connections for temporary external generators. Electrical connections shall be provided allowing for the connection of temporary external generators capable of providing power for at least 72 hours for, at a minimum, the following systems:

      1.1.   All electrical services serving such occupancy for which emergency or standby power must be provided in accordance with any other applicable local, state or federal law or rule; and

      1.2.   Air conditioning and cooling systems serving such occupancy, sufficient to maintain temperature and humidity in accordance with Section 1204, for (i) spaces primarily used for the provision of medical services to persons, including, but not limited to, consultation, evaluation, monitoring and treatment services and (ii) spaces intended to be used by persons for sleeping purposes.

      Exception: Connections for temporary external generators shall not be required for buildings that have emergency or standby power systems that are permanently installed above the design flood elevation specified in Table 7-1 of ASCE 24 and capable of providing power for at least 72 hours to the systems identified in Item 1 of Section G304.5.2. Natural gas shall be a permitted fuel supply.

   2.   Connections for temporary external boilers and chillers. Where boiler and chiller plants are located below the design flood elevation specified in Table 7-1 of ASCE 24 and serve (i) spaces primarily used for the provision of medical services to persons, including, but not limited to, consultation, evaluation, monitoring and treatment services or (ii) spaces intended to be used by persons for sleeping purposes, connections shall be provided to allow for the connection of temporary external boilers and chillers capable of maintaining temperature and humidity for such spaces in accordance with Section 1204 for at least 72 hours.

   3.   Flood protection for temporary external generator, boiler and chiller connections. Electrical connections installed in accordance with Item 1 of Section G304.5.2 and connections installed in accordance with Item 2 of Section G304.5.2 shall be located at or above the design flood elevation specified in Table 7-1 of ASCE 24.

   4.   Emergency connection plan. Prior to sign-off of work by the department, the following shall be submitted to the department:

      4.1.   For an occupancy required to comply with Item 1 of Section G304.5.2, a plan that identifies how the temporary external generators will be connected and capable of providing power for the occupancy in accordance with such item within 72 hours after failure of the normal power supply; and

      4.2.   For an occupancy required to comply with Item 2 of Section G304.5.2, a plan that identifies how the temporary external boilers and chillers will be connected and capable of maintaining temperature and humidity for specified spaces in accordance with Section 1204 within 72 hours after failure of the primary boiler and chiller plants.

G304.5.3 Group I-2 nursing homes.

An occupancy that is a Group I-2 nursing home shall comply with Section G304.5.2.

   Exception: Such occupancy is not required to comply with Items 1.2, 2 and 4.2 of Section G304.5.2.

G304.5.4 Group I-2 occupancies, other than hospitals and nursing homes.

A Group I-2 occupancy, other than a hospital or a nursing home, shall comply with Section G304.5.1.

Section BC G305: Manufactured Homes