Current through Reg. 49, No. 38; September 20, 2024
(a) The design of the mechanical systems must
be done by or under the direction of a licensed professional mechanical
engineer approved by the Texas Board of Professional Engineers to operate in
Texas, and the parts of the plans and specifications covering mechanical design
must bear the legible seal of the engineer.
(1) Building services pertaining to
utilities; heating, ventilating, and air-conditioning systems; vertical
conveyors; and chutes must be according to NFPA 101.
(2) Required plumbing fixtures must be
according to NFPA 101 and §554.354 of this division (relating to
Architectural Space Planning and Utilization for New Facilities) in specific
use areas.
(b) Plumbing.
(1) All plumbing systems must be designed and
installed according to the requirements of the locally adopted plumbing code.
In the absence of a locally-adopted plumbing code, a nationally recognized
model plumbing code must be used. Any discrepancy between an applicable code
and the requirements of this section must be called to the attention of HHSC
for resolution.
(2) Supply systems
must ensure adequate hot and cold water. In addition to hot water for kitchen
and laundry use, a rule-of-thumb for hot water for resident use at 110 degrees
Fahrenheit is to provide 6-1/2 gallons per hour per resident.
(3) Water must be supplied from a system
approved by the Water Supply Division of TCEQ, or from a system regulated by an
entity responsible for water quality in that jurisdiction as approved by the
Water Supply Division of TCEQ.
(4)
The sewage system must connect to a system permitted by the Water Quality
Division of TCEQ, or to a system regulated by an entity responsible for water
quality in that jurisdiction as approved by the Water Quality Division of TCEQ.
(5) The minimum ratio of fixtures
to residents shall be as required in §554.354(c) of this division.
(6) For design calculation
purposes, resident-use hot water must not exceed 110 degrees Fahrenheit at the
fixture. For purposes of conforming to licensure requirements, an operating
system providing water from 100 degrees Fahrenheit to 115 degrees Fahrenheit is
acceptable. Hot water for laundry and kitchen use must be normally 140 degrees
Fahrenheit. Hot water for dish sanitizing must be 180 degrees Fahrenheit.
(7) A facility must provide water
closets with a seat height 17 inches to 19 inches from the floor for persons
with disabilities.
(8) Showers for
wheelchair residents must not have curbs. Tub and shower bottoms must have a
slip-resistant surface. Shower and tub enclosures, other than curtains, must be
of tempered glass, plastic, or other safe material.
(9) Drinking fountains must not extend into
exit corridors.
(10) A facility
must provide fixture controls easily operable by residents, such as lever-type
controls.
(11) Plumbing fixtures
for residents must be vitreous china or porcelain finished cast iron or steel
unless otherwise approved by HHSC. Fiberglass bathing units are acceptable if
they have a Class B flame spread rating when tested according to ASTM E84.
(12) Hand-washing sinks for staff
use must be according to §554.354 of this division. A facility must
provide lavatories adjacent to all water closets.
(13) A soiled utility room must be provided
with a flushing device, such as a water closet with bedpan lugs; a spray hose
with a siphon breaker or similar device, such as a high neck faucet with lever
controls; and a deep sink that is large enough to submerse a bedpan. A
sterilizer may be used for sanitizing in place of a deep sink.
(14) A facility must install a siphon breaker
or back-flow preventer with any water supply fixture if the outlet or
attachments may be submerged.
(15)
A facility must provide clean-outs for waste piping lines located so there is
the least physical and sanitary hazard to residents. To avoid contamination,
clean-outs must open to the exterior, where possible.
(16) A facility with a boiler must meet all
applicable requirements of Texas Health and Safety Code Chapter 755.
(c) Heating, Ventilating, and
Air-Conditioning (HVAC) and Exhaust Systems
(1) General Requirements.
(A) HVAC systems must be designed and
installed in accordance with ASHRAE standards, except as may be modified by
this section.
(B) HVAC systems
serving spaces or providing health functions covered by NFPA 99 must be
commissioned as required by NFPA 99.
(C) HVAC systems must meet the requirements
of NFPA 90A and NFPA 99.
(D)
Mechanical plans must bear a statement verifying that the systems are designed
according to NFPA 90A and NFPA 99.
(E) All air-supply and air-exhaust systems
must be mechanically-operated.
(F)
Ducts must be of metal or other approved noncombustible material. Cooling ducts
must be insulated against condensation.
(G) Static pressures of systems must be
within limits recommended by ASHRAE and the equipment manufacturer, both
upstream and downstream.
(2) Heating and Cooling.
(A) A facility must provide heating and
cooling by a central air conditioning system, or a substantially similar air
conditioning system. Air conditioning systems must be designed, installed and
functioning to maintain temperatures suitable for resident comfort within all
areas used by residents.
(B) Design
temperatures for heating and cooling must be as required by NFPA 99.
(C) A heating system must be able to maintain
a temperature of at least 75 degrees Fahrenheit for all areas occupied by
residents. For all other occupied areas, a heating system must be able to
maintain a temperature of at least 72 degrees Fahrenheit.
(D) A cooling system must be able to maintain
a temperature of not more than 78 degrees Fahrenheit.
(E) Occupied areas generating high heat, such
as kitchens, must be provided with a sufficient cool air supply to maintain a
temperature not exceeding 85 degrees Fahrenheit at the five-foot level. Supply
air volume must be approximately equal to the air volume exhausted to the
exterior for these areas.
(F) The
location and design of air diffusers, registers, and return air grilles must
ensure that residents are not in harmful or excessive drafts in their normal
usage of the room.
(G) In
geographic locations or interior room areas where extreme humidity levels are
likely to occur for extended periods of time, apparatus for controlling
humidity levels with automatic humidistat controls, preferably at 40-60%
relative humidity, are recommended as part of central systems.
(H) Unvented space heaters and portable
heating units must not be used. Heating devices or appliances must not be a
burn hazard to residents.
(I)
Gas-fired Heating Equipment.
(i) Systems
using liquefied petroleum gas fuel must meet the requirements of the Railroad
Commission of Texas and NFPA 58.
(ii) A combustion fresh air inlet must be
provided to all gas or fossil fuel operated equipment in steel ducts or
passages from outside the building according to NFPA 54. Combustion air must be
provided through two permanent openings, one commencing within 12 inches of the
floor and one commencing within 12 inches of the ceiling.
(iii) A room where gas-fired heating
equipment is located must be vented to the exterior to exhaust heated ambient
air in the room.
(3) Ventilation.
(A) Air systems must provide for mixing at
least 10% outside air for the supply distribution. Blowers for central heating
and cooling systems must be designed so that they may run continuously.
(B) A facility must locate an
outdoor air intake according to NFPA 99 and as far as practical, but not less
than 10 feet, from exhaust outlets or ventilating systems, combustion equipment
stacks, medical vacuum systems, plumbing vent stacks, or areas which may
collect vehicular exhaust and other noxious fumes.
(C) Fresh air inlets must be appropriately
screened to prevent entry of debris, rodents, and animals. A facility must
provide access to such screens for periodic inspection and cleaning to
eliminate clogging or air stoppage.
(D) A facility must incorporate natural
ventilation using windows or louvers, if possible and practical. Windows or
louvers must have insect screens.
(E) The design of ventilation systems must
provide air movement that is from clean to less clean areas. The ventilation
systems must be designed and balanced to provide the pressure relationships to
adjacent spaces as required by NFPA 99. The installer must furnish and certify
a final engineered system air balance report for the completed system. The
report must demonstrate the pressure relationships required by NFPA 99.
(F) Air supply to food preparation
areas must not be from air that has circulated through places such as resident
bedrooms and baths.
(G) Ventilation
rates for all areas of a facility must be as required by NFPA 99. These rates
are the minimum acceptable rates, but do not preclude the use of higher
ventilation rates.
(H) The bottoms
of ventilation openings must be at least three inches above the floor of any
room.
(I) A door protecting a
corridor or way of egress must not include an air transfer grille or louver. A
corridor must not be used to supply air to or exhaust air from any room except
that air from a corridor may be used as make-up air to ventilate a small toilet
room, a janitor's closet, or a small electrical or telephone closet opening
directly on a corridor, provided the ventilation can be accomplished by door
undercuts not exceeding 3/4 inches.
(4) Exhaust.
(A) A facility must provide forced air
exhaust of all room air directly to the outdoors according to NFPA 99.
(i) Areas such as laundries, kitchens, and
dishwashing areas must exhaust all room air to the outdoors to remove excess
heat and moisture and to maintain air flow in the direction of clean to soiled
areas.
(ii) Unsanitary areas,
including janitor's closets, soiled linen areas, soiled workroom and utility
areas, and soiled areas of laundry rooms, must exhaust all room air outdoors.
(B) All exhaust must be
continuously ducted to the exterior. Exhausting air into attics or other spaces
is not permitted. Exhaust duct material must be metal.
(C) Exhaust hoods, ducts, and automatic
extinguishers for kitchen cooking equipment must be according to NFPA 96, when
required by NFPA 101.
(5)
Integration with Building Construction.
(A)
Smoke compartmentation must meet the requirements of §554.356 of this
division (relating to Smoke Compartments (Subdivision of Building Spaces) for
New Facilities).
(B) An air system
must be designed as much as possible to avoid having ducts passing through fire
walls or smoke barrier walls. All openings or duct penetrations in these walls
must be according to NFPA 101.
(C)
A smoke damper at a smoke barrier must close automatically upon activation of
the fire alarm system to prevent the flow of air or smoke in either direction,
when required by NFPA 101.
(D) A
duct with a smoke damper must have maintenance panels for inspection. A
maintenance panel must be removable without tools. A facility must provide
access in the ceiling or side wall to facilitate smoke damper inspection. A
facility must identify the location of dampers on the wall or ceiling of the
occupied area below.
(E) A central
air supply system or a system serving a means of egress must automatically and
immediately shut down upon activation of the fire alarm system, except when
such a system is part of an engineered smoke-removal system approved by
HHSC.
(6) All ventilation
or air-conditioning systems must be equipped with filters as required by NFPA
99. Filters must be of sufficient efficiency to minimize dust and lint
accumulations throughout the system and building, including in supply and
return plenums and ductwork. Filters must be easily accessible for routine
changing or cleaning.
(d) Sprinkler systems. The following
requirements are applicable to sprinkler systems:
(1) Sprinkler systems must be according to
NFPA 13 and this subchapter.
(2)
The design and installation of sprinkler systems must meet any applicable state
laws pertaining to these systems and one of the following criteria:
(A) A sprinkler system must be designed by a
qualified licensed professional engineer approved by the Texas Board of
Professional Engineers to operate in Texas. The engineer must supervise the
installation and provide written approval of the completed installation.
(B) A sprinkler system must be
planned and installed according to NFPA 13 by a firm with a certificate of
registration issued by the State Fire Marshal's Office. The RME's license
number and signature must be included on the prepared sprinkler drawings.
(3) A facility must
ensure all sprinkler piping is protected against freezing. The design of freeze
protection must minimize the need for dependence on staff action or
intervention to provide protection.
(e) Piped gas and vacuum systems. A piped
medical gas or medical vacuum system, including a piped oxygen system, a vacuum
system, or a drive gas system such as a compressed air system, must be
designed, installed, operated and managed according to the requirements of NFPA
99 for new health care facilities, and based on the risk category determined by
the assessment required by § 554.300(i) of this subchapter (relating to
General Requirements).