CRSC · California Referenced Standards Code
Materials, components & actuator definitions
This page orients readers to CRSC material, component and actuator definitions and points to the governing sections for design, testing and installation.
Last reviewed: July 6, 2026
Overview
This part of the California Referenced Standards Code (CRSC) sets material, component and actuator requirements for releasing systems and related assemblies — specifying acceptable materials, corrosion protection, and referenced test/listing standards (for example, see §12-3-4.1–§12-3-4.4 for material strength, polymeric and seal requirements and corrosion protection) .
It also defines actuator and release-mechanism expectations (how manual actuators must operate, allowable motions, and cable/connector limitations) and links those functional rules to the system-level requirements for releasing security bars and assemblies (see §12-3-4.5 and §12-3-4.6, and related system performance and design rules in §12-3-3) . These provisions are applied alongside installation and documentation requirements such as actuator mounting and instruction‑manual content (§12-3-13.3) to ensure safe, maintainable operation .
In this section
Code references
Grounded in the retrieved California Referenced Standards Code — click a citation to read the verbatim passage:
CRSC § 71.4 Medium relevance — show source text
reinforcement: verti-
cal, four5/8″ rebars; horizontal,3/8″ ties at
7″ pitch; cover: 11/2″.|71.4
tons|2 hrs|||7|2, 7|2| |C-11-RC-20|11″|11″ square columns; gravel concrete (4530
psi); reinforcement: vertical, four5/8″
rebars; horizontal,3/8″ ties at 7″ pitch;
cover: 11/2″ with1/2″ plaster.|58.8
tons|2 hrs|||7|2, 3, 9|2| |C-11-RC-21|11″|11″ square columns; gravel concrete (3520
psi); reinforcement: vertical, four5/8″
rebars; horizontal,3/8″ ties at 7″ pitch;
cover: 11/2″.|Vari-
able|1 hr
24 min|||7|1, 8|11/4| |C-11-RC-22|11″|11″ square columns; aggregate concrete
(3710 psi); reinforcement: vertical, four5/8″
rebars; horizontal,3/8″ ties at 7″ pitch;
cover: 11/2″.|58.8
tons|2 hrs|||7|2, 3,
10|2| |C-11-RC-23|11″|11″ square columns; aggregate concrete
(3190 psi); reinforcement: vertical, four5/8″
rebars; horizontal,3/8″ ties at 7″ pitch;
cover: 11/2″.|58.8
tons|2 hrs|||7|2, 3,
10|2| |C-11-RC-24|11″|11″ square columns; aggregate concrete
(4860 psi); reinforcement: vertical, four
5/8″ rebars; horizontal,3/8″ ties at 7″ pitch;
cover: 11/2″.|86.1
tons|1 hr
20 min|||7|1|11/3| |C-11-RC-25|11″|11″ square columns; aggregate concrete
(4850 psi); reinforcement: vertical, four 5/8″
rebars; horizontal,3/8″ ties at 7″ pitch;
cover: 11/2″.|58.8
tons|1 hr
59 min|||7|1|13/4| |C-11-RC-26|11″|11″ square columns; aggregate concrete
(3834 psi); reinforcement: vertical, four 5/8″
rebars; horizontal,5/16″ ties at 41/2″ pitch;
cover: 11/2″.|71.4
tons|53 min|||7|1|3/4|For SI: 1 inch = 25.4 mm, 1 pound per square inch = 0.00689 MPa, 1 ton = 8.896 kN.
CRSC § 12-3 Medium relevance — show source text
12-3-3.11 Security bars shall be constructed so that they do not swing up to open. They shall not include projections that can easily snag the clothing of those escaping through the opening.
12-3-3.12 Security bars shall have been constructed such that a sphere 4 inches (102 mm) in diameter shall not pass through any opening and shall not create other potential head entrapment hazards.
SECTION 12-3-4—MATERIALS
12-3-4.1 The materials employed shall have adequate mechanical strength to perform their expected function.
12-3-4.2 O-rings, gaskets and seals shall comply with UL Standard 157, 1996 Edition. Polymeric materials shall comply with UL Standard 746C, 1995 Edition, Section 25-27.
Exception: O-rings, gaskets, seals and polymeric materials that are used as decorative parts, or whose failure will not affect the ability of the system to comply with these requirements.
12-3-4.3 Components constructed of dissimilar metals shall not be used in applications where contact between them is likely to cause galvanic corrosion. The materials employed shall reduce the likelihood of the release mechanism becoming inoperative due to corrosion.
12-3-4.4 Ferrous metal parts shall be 300 series stainless steel or protected against corrosion using minimum G60 or A60 hot-dipped mil galvanization, 0.0104 mm thick zinc coating, 0.0127 mm thick cadmium coating or two coats of organic outdoor paint.
4 2025 CALIFORNIA REFERENCED STANDARDS CODE
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
RELEASING SYSTEMS FOR SECURITY BARS IN DWELLINGS
12-3-4.5 Manual actuators.
12-3-4.5.1 Security bar releasing assembly mechanisms shall include a manual actuation mechanism that is capable of unlatching the security bars so that they can be opened by the occupants. The actuating force shall be applied in one of the following
manners:
Finger actuated: Pushing with the index finger or pulling a loop with the index finger in a curled position.
Hand actuated: Pulling, pushing, twisting, rotating or turning a lever, knob, handle, rod or similar actuator with the hand or multiple fingers.
Foot actuated: Kicking, depressing or stepping on an actuating pedal, lever, stirrup or similar actuator.
12-3-4.5.2 On foot-actuated systems, only a single foot motion shall be used to disengage the bar assembly from the latch. On finger- and hand-actuated systems, one or two distinct hand or finger motions shall be used to disengage the bar assembly from the latch.
12-3-4.5.3 Releasing the actuator after the latch has been disengaged from the bar assembly shall not reengage the bar assembly.
12-3-4.5.4 No features or methods shall be provided or referenced in the instruction manual to inhibit the operation of the releasing mechanism.
12-3-4.6 Cables and connectors.
12-3-4.6.1 Cables connecting actuators to latches and release mechanisms shall only be used in applications where the force transmitted by them during normal operation is less than [ 1] / 10 the manufacturer’s rated working tension or compression.
CRSC § 805.13.1.1.2 Medium relevance — show source text
(8) Verify that the control system does not report a fault during normal operation.
Step 3: Valve/actuator fault:
(1) From the control system workstation, command the heating and cooling coil valves to full open or closed, then disconnect power to the actuator and verify that a fault is reported at the control workstation.
Step 4: Inappropriate simultaneous heating, mechanical cooling, and economizing or all functions:
(1) From the control system workstation, override the heating coil valve and verify that a fault is reported at the control workstation.
(2) From the control system workstation, override the cooling coil valve and verify that a fault is reported at the control workstation.
(3) From the control system workstation, override the mixing box dampers and verify that a fault is reported at the control workstation.
E 805.13.1.1.2 Functional Testing for Zone Terminal Units. The functional testing of one of each type of terminal unit (VAV box) in the project not less than 5 percent of the terminal boxes shall be in accordance with the following steps:
Step 1: Sensor drift/failure:
(1) Disconnect the tubing to the differential pressure sensor of the VAV box.
(2) Verify that control system detects and reports the fault.
(3) Reconnect the sensor and verify proper sensor operation.
(4) Verify that the control system does not report a fault.
Step 2: Damper/actuator fault:
(1) Damper stuck open.
(a) Command the damper to full open (room temperature above setpoint).
(b) Disconnect the actuator to the damper.
2025 CALIFORNIA MECHANICAL CODE 489
), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
APPENDIX E
(c) Adjust the cooling setpoint so that the room temperature is below the cooling setpoint to command the damper to the minimum position. Verify that the control system reports a fault. (d) Reconnect the actuator and restore to normal operation. (2) Damper stuck closed. (a) Set the damper to the minimum position.
(b) Disconnect the actuator to the damper.
(c) Set the cooling setpoint below the room temperature to simulate a call for cooling. Verify that the control system reports a fault.
(d) Reconnect the actuator and restore to normal operation.
Step 3: Valve/actuator fault (for systems with hydronic reheat):
(1) Command the reheat coil valve to full
open.
(2) Disconnect power to the actuator. Set the heating setpoint temperature to be lower than the current space temperature, to command the valve closed. Verify that the fault is reported at the control workstation.
(3) Reconnect the actuator and restore normal operation.
Step 4: Feedback loop tuning fault (unstable airflow):
(1) Set the integral coefficient of the box controller to a value 50 times the current value.
(2) The damper cycles continuously and airflow is unstable. Verify that the control system detects and reports the fault.
(3) Reset the integral coefficient of the controller to the original value to restore normal operation.
Step 5: Disconnected inlet duct:
(1) From the control system workstation, command the damper to full closed; then disconnect power to the actuator, and verify that a fault is reported at the control workstation.
CRSC § 12-3 Medium relevance — show source text
Exception: The security bars shall be allowed to be provided separately if the instruction manual complies with Section 12-3-13.2.
12-3-3.2 The system shall be of a type capable of being readily maintained in proper operating condition.
12-3-3.3 The system shall be designed to immediately unlatch the security bars when actuated. It shall be able to be operated from the inside of a building by the occupants without the use of tools, keys, or special knowledge or effort.
12-3-3.4 The manual actuator used to release the security bars shall be designed to be mounted inside the dwelling unit for operation by the occupants. Covers or other barriers that can obstruct access to actuators shall not be provided if they inhibit the proper operation of the system.
12-3-3.5 The release mechanism shall not depend on springs to release the latch, although springs are allowed to be provided to assist in the operation.
12-3-3.6 The system shall be designed to prevent it from being locked in a closed position with a pad lock or similar device.
12-3-3.7 Systems provided with an automatic actuating mechanism shall also include a manual release system that complies with these requirements. The automatic actuation portion of the system, even in the event of its failure, shall not inhibit operation of the manual releasing system.
12-3-3.8 Manual actuation of the system shall release the security bars quickly and with simple, easily understood and intuitive motions. The system shall be capable of being operated in all lighting conditions.
12-3-3.9 Manual actuation of the system shall not require two different forces to be applied at the same time, such as applying force to the actuator while also pushing on the bars. 12-3-3.10 When fully opened, the assembly shall provide a minimum clear opening of not less than 5.7 square feet (0.53 m [2] ) with the width not less than 20 inches (508 mm) and the height not less than 24 inches (610 mm), measured parallel to the plane of the opening.
12-3-3.11 Security bars shall be constructed so that they do not swing up to open. They shall not include projections that can easily snag the clothing of those escaping through the opening.
12-3-3.12 Security bars shall have been constructed such that a sphere 4 inches (102 mm) in diameter shall not pass through any opening and shall not create other potential head entrapment hazards.
SECTION 12-3-4—MATERIALS
12-3-4.1 The materials employed shall have adequate mechanical strength to perform their expected function.
12-3-4.2 O-rings, gaskets and seals shall comply with UL Standard 157, 1996 Edition. Polymeric materials shall comply with UL Standard 746C, 1995 Edition, Section 25-27.
Exception: O-rings, gaskets, seals and polymeric materials that are used as decorative parts, or whose failure will not affect the ability of the system to comply with these requirements.
12-3-4.3 Components constructed of dissimilar metals shall not be used in applications where contact between them is likely to cause galvanic corrosion. The materials employed shall reduce the likelihood of the release mechanism becoming inoperative due to corrosion.
CRSC § 0.099 Medium relevance — show source text
3(1)—continued Col2 Col3 Col4 NOMINAL MATE-
RIAL THICKNESS
(inches)DESCRIPTIONa, b OF FASTENER AND LENGTH
(inches)SPACINGc OF FASTENERS SPACINGc OF FASTENERS NOMINAL MATE-
RIAL THICKNESS
(inches)DESCRIPTIONa, b OF FASTENER AND LENGTH
(inches)Edges
(inches)Body of paneld
(inches)Floor underlayment; plywood-hardboard-particleboardf-fiber-cementh Floor underlayment; plywood-hardboard-particleboardf-fiber-cementh Floor underlayment; plywood-hardboard-particleboardf-fiber-cementh Floor underlayment; plywood-hardboard-particleboardf-fiber-cementh Fiber-cement Fiber-cement Fiber-cement Fiber-cement 1/4 11/4 long × 0.099″ corrosion-resistant, ring shank nails (finished flooring other than tile) 3 6 1/4 Staple 18 ga.7/8 long,1/4 crown (finished flooring other than tile) 3 6 1/4 11/4 long × .121 shank × .375 head diameter corrosion-resistant
(galvanized or stainless steel) roofing nails (for tile finish)8 8 1/4 11/4 long, No. 8 × .375 head diameter, ribbed wafer-head screws (for tile finish) 8 8 Plywood Plywood Plywood Plywood 1/4 and5/16 11/4 ring or screw shank nail-minimum 121/2 ga. (0.099″) shank diameter 3 6 1/4 and5/16 Staple 18 ga.,7/8, 3/16 crown width 2 5 11/32, 3/8, 15/32 and1/2 11/4 ring or screw shank nail-minimum 121/2 ga. (0.099″) shank diameter 6 8e 19/32, 5/8, 23/32 and3/4 11/2 ring or screw shank nail-minimum 121/2 ga. (0.099″) shank diameter 6 8 19/32, 5/8, 23/32 and3/4 Staple 16 ga. California Referenced Standards Code Medium relevance — show source text
A**
minimum of 5% of results the terminal boxes shall be tested.|
Testing shall be performed on one of each type of terminal unit (VAV box) in the project. A
minimum of 5% of results the terminal boxes shall be tested.| |Step 1: Sensor Drift/Failure:
|Step 1: Sensor Drift/Failure:
| |
a.
Disconnect the tubing to the differential pressure sensor of the VAV box.|Y / N
| |
b.
Verify that control system detects and reports the fault.|Y / N
| |
c.
Reconnect the sensor and verify proper sensor operation.|Y / N
| |
d.
Verify that the control system does not report a fault.|Y / N| |
Step 2: Damper/actuator fault.
|
Step 2: Damper/actuator fault.
| |If the damper is stuck open:
|If the damper is stuck open:
| |
a.
Command the damper to be fully open (room temperature above setpoint).|Y / N
| |
b.
Disconnect the actuator to the damper.|Y / N
| |
c.
Adjust the cooling setpoint so that the room temperature is below the cooling setpoint to command
the damper to the minimum position. Verify that the control system reports a fault.|Y / N
| |
d.
Reconnect the actuator and restore to normal operation.
|Y / N| |If the damper is stuck closed:
|If the damper is stuck closed:
| |
a.
Set the damper to the minimum position.|Y / N
| |
b.
Disconnect the actuator to the damper.|Y / N
| |
c.
Set the cooling setpoint below the room temperature to simulate a call for cooling. Verify that the
control system reports a fault.|Y / N| |
d.
Reconnect the actuator and restore to normal operation.|Y / N| |
Step 3: Valve/actuator fault (for systems with hydronic reheat).
|
Step 3: Valve/actuator fault (for systems with hydronic reheat).
| |
a.
Command the reheat coil valve to full open.|Y / N| |
b.
Disconnect power to the actuator. Set the heating setpoint temperature to be lower than the current
space temperature, to command the valve closed. Verify that the fault is reported at the control work-
station.|Y / N| |
c.
Reconnect the actuator and restore normal operation.|Y / N| |
**Step 4: Feedback loop tuning fault (unstable airflow).CMC § 100 Medium relevance — show source text
|Step 2: Damper/actuator fault.
| |
a.
From the control system workstation, command the mixing box dampers to full open (100% outdoor
air).|~~Y / NY / N
| |
b.
Disconnect power to the actuator and verify that a fault is reported at the control workstation.|Y / N
| |
c.
Reconnect power to the actuator and command the mixing box dampers to full open.|Y / N
| |
d.
Verify that the control system does not report a fault.|Y / N
| |
e.
From the control system workstation, command the mixing box dampers to a full-closed position
(0% outdoor air).|Y / N
| |
f.
Disconnect power to the actuator and verify that a fault is reported at the control workstation.|Y / N
| |
g.
Reconnect power to the actuator and command the dampers closed.|Y / N
| |
h.
Verify that the control system does not report a fault during normal operation.|| |Step 3: Valve/actuator fault.Y / N
|Step 3: Valve/actuator fault.
| |
a.
From the control system workstation, command the heating and cooling coil valves to full open or
closed, then disconnect power to the actuator and verify that a fault is reported at the control workstation.|| |Y / N
Step 4: Inappropriate simultaneous heating, mechanical cooling, and/or economizing.
|
Step 4: Inappropriate simultaneous heating, mechanical cooling, and/or economizing.
| |
a.
From the control system workstation, override the heating coil valve and verify that a fault is
reported at the control workstation.|Y / N**~~|
| |
b.
From the control system workstation, override the cooling coil valve and verify that a fault is
reported at the control workstation.|Y / N
| |
c.
From the control system workstation, override the mixing box dampers and verify that a fault is
reported at the control workstation.|2025 CALIFORNIA MECHANICAL CODE 523
), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
APPENDIX E
CRSC § 805.13.1 Medium relevance — show source text
An FDD system that does not pass this test shall be permitted to be installed, but no compliance credit will be given. E 805.13.1 Test Procedure. The procedure for performing a functional test for automatic fault detection diagnostics (FDD) for air handling units and zone terminal units shall be in accordance with Section E 805.13.1.1.
E 805.13.1.1 Functional Testing. The functional testing shall be in accordance with Section E 805.13.1.1.1 and Section E 805.13.1.1.2.
E 805.13.1.1.1 Functional Testing for Air Handling Units. The functional testing of AHU with FDD controls shall be in accordance with the following steps:
Step 1: Sensor drift/failure:
(1) Disconnect outside air temperature sensor from unit controller.
(2) Verify that the FDD system reports a fault.
(3) Connect OAT sensor to the unit controller.
(4) Verify that FDD indicates normal system operation.
Step 2: Damper/actuator fault:
(1) From the control system workstation, command the mixing box dampers to full open (100 percent outdoor air).
(2) Disconnect power to the actuator and verify that a fault is reported at the control workstation.
(3) Reconnect power to the actuator and command the mixing box dampers to full open.
(4) Verify that the control system does not report a fault.
(5) From the control system workstation, command the mixing box dampers to a fullclosed position (0 percent outdoor air).
(6) Disconnect power to the actuator and verify that a fault is reported at the control workstation.
(7) Reconnect power to the actuator and command the dampers closed.
(8) Verify that the control system does not report a fault during normal operation.
Step 3: Valve/actuator fault:
(1) From the control system workstation, command the heating and cooling coil valves to full open or closed, then disconnect power to the actuator and verify that a fault is reported at the control workstation.
Step 4: Inappropriate simultaneous heating, mechanical cooling, and economizing or all functions:
(1) From the control system workstation, override the heating coil valve and verify that a fault is reported at the control workstation.
(2) From the control system workstation, override the cooling coil valve and verify that a fault is reported at the control workstation.
(3) From the control system workstation, override the mixing box dampers and verify that a fault is reported at the control workstation.
E 805.13.1.1.2 Functional Testing for Zone Terminal Units. The functional testing of one of each type of terminal unit (VAV box) in the project not less than 5 percent of the terminal boxes shall be in accordance with the following steps:
Step 1: Sensor drift/failure:
(1) Disconnect the tubing to the differential pressure sensor of the VAV box.
(2) Verify that control system detects and reports the fault.
(3) Reconnect the sensor and verify proper sensor operation.
(4) Verify that the control system does not report a fault.
Step 2: Damper/actuator fault:
(1) Damper stuck open.
(a) Command the damper to full open (room temperature above setpoint).
(b) Disconnect the actuator to the damper.
2025 CALIFORNIA MECHANICAL CODE 489
CMC § 524 Medium relevance — show source text
Verify that the control system reports a fault.|Y / N
| |
d.
Reconnect the actuator and restore to normal operation.
|Y / N| |If the damper is stuck closed:
|If the damper is stuck closed:
| |
a.
Set the damper to the minimum position.|Y / N
| |
b.
Disconnect the actuator to the damper.|Y / N
| |
c.
Set the cooling setpoint below the room temperature to simulate a call for cooling. Verify that the
control system reports a fault.|Y / N| |
d.
Reconnect the actuator and restore to normal operation.|Y / N| |
Step 3: Valve/actuator fault (for systems with hydronic reheat).
|
Step 3: Valve/actuator fault (for systems with hydronic reheat).
| |
a.
Command the reheat coil valve to full open.|Y / N| |
b.
Disconnect power to the actuator. Set the heating setpoint temperature to be lower than the current
space temperature, to command the valve closed. Verify that the fault is reported at the control work-
station.|Y / N| |
c.
Reconnect the actuator and restore normal operation.|Y / N| |
Step 4: Feedback loop tuning fault (unstable airflow).
|
Step 4: Feedback loop tuning fault (unstable airflow).
| |
a.
Set the integral coefficient of the box controller to a value 50 times the current value. Lower the
space cooling setpoint to simulate a call for cooling.|Y / N
| |
b.
The damper cycles continuously and airflow is unstable. Verify that the control system detects and
reports the fault.|Y / N
| |
c.
Reset the integral coefficient of the controller to the original value to restore normal operation.|Y / N| |
Step 5: Disconnected inlet duct.|
Step 5: Disconnected inlet duct.| |a.
From the control system workstation, command the damper to full closed, then disconnect power to
the actuator and verify that a fault is reported at the control workstation.|Y / N|524 2025 CALIFORNIA MECHANICAL CODE
), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
APPENDIX E
CRSC § 909.22.6. Medium relevance — show source text
Exception: Where verification of individual components tested through the preprogrammed weekly testing sequence will interfere with, and produce unwanted effects to, normal building operation, such individual components are permitted to be bypassed from the preprogrammed weekly testing, where approved by the fire code official and in accordance with both of the following:
- Where the operation of components is bypassed from the preprogrammed weekly test, presence of power downstream of all disconnects shall be verified weekly by a listed control unit.
- Testing of all components bypassed from the preprogrammed weekly test shall be in accordance with Section 909.22.6.
The status of dampers shall be determined using limit or proximity switches installed at the damper or incorporated into the damper actuator. Where multiple dampers are grouped together in an assembly requiring one or more actuators, each damper shall be independently controlled by a separate actuator and provided with an individual limit or proximity switch, or the dampers shall be linked together by a reliable and durable mechanical means or otherwise by permanent means into one or more groups, with each group provided with a common limit or proximity switch.
The status of fans shall be determined by sensing the airflow downstream of the fans using pressure differential switches or trans- mitters, or by other means of positive proof of airflow where approved by the enforcing authority.
909.12.2 Wiring. In addition to meeting requirements of the California Electrical Code, all wiring, regardless of voltage, shall be fully enclosed within continuous raceways.
909.12.3 Activation. Smoke control systems shall be activated in accordance with this section.
909.12.3.1 Pressurization, airflow or exhaust method. Mechanical smoke control systems using the pressurization, airflow or exhaust method shall have completely automatic control.
909.12.3.2 Passive method. Passive smoke control systems actuated by approved spot-type detectors listed for releasing service shall be permitted.
909.12.4 Automatic control. Where completely automatic control is required or used, the automatic-control sequences shall be initiated from an appropriately zoned automatic sprinkler system complying with Section 903.3.1.1, manual controls provided with ready access for the fire department and any smoke detectors required by the engineering analysis.
909.13 Control air tubing. Control air tubing shall be of sufficient size to meet the required response times. Tubing shall be flushed clean and dry prior to final connections and shall be adequately supported and protected from damage. Tubing passing through concrete or masonry shall be sleeved and protected from abrasion and electrolytic action.
909.13.1 Materials. Control air tubing shall be hard drawn copper, Type L, ACR in accordance with ASTM B42, ASTM B43, ASTM B68/B68M, ASTM B88, ASTM B251 and ASTM B280. Fittings shall be wrought copper or brass, solder type, in accordance with ASME B16.18 or ASME B16.22. Changes in direction shall be made with appropriate tool bends. Brass compression-type fittings shall be used at final connection to devices; other joints shall be brazed using a BCuP5 brazing alloy with solidus above 1,100°F (593°C) and liquidus below 1,500°F (816°C). Brazing flux shall be used on copper-to-brass joints only.
Exception: Nonmetallic tubing used within control panels and at the final connection to devices, provided that all of the following conditions are met:
- Tubing shall comply with the requirements of Section 602.3.5 of the California Mechanical Code .
California Referenced Standards Code Medium relevance — show source text
; 2′ C.R.S. with 1″ cover on
both top and bottom flanges; 13′1″ span
restrained.|60 psf|2 hrs|||7|1, 3|2| |F/C-6-RC-34|61/4″|61/4″ thick; 43/4″ (5120 psi) concrete core;
1″ T&G board flooring;1/2″ plaster under-
coat; 4″ × 3″ × 10 lbs R.S.J.; 3′ C.R.S. flush
with top surface concrete; 12′ span simply
supported; 2″ × 1′3″ clinker concrete
insert.|100 psf|4 hrs|||7|1, 7|4| |F/C-6-RC-35|61/4″|43/4″ (3600 psi) concrete core; 1″ T&G
board flooring;1/2″ plaster undercoat; 4″ ×
3″ × 10 lbs R.S.J.; 3′ C.R.S. flush with top
surface concrete; 12′ span simply
supported; 2″ × 1′3″ clinker concrete
insert.|100 psf|2 hrs
30 min|||7|1, 5|21/2| |F/C-6-RC-36|61/4″|43/4″ (2800 psi) concrete core; 1″ T&G
board flooring;1/2″ plaster undercoat; 4″ ×
3″ × 10 lbs R.S.J.; 3′ C.R.S. flush with top
surface concrete; 12″ span simply
supported; 2″ × 1′3″ clinker concrete
insert.|80 psf|4 hrs|||7|1, 7|4| |F/C-7-RC-37|7″|(3640 psi) concrete deck;1/4″ reinforce-
ment bars at 6″ pitch with 11/2″ cover;1/4″
reinforcement bars at 5″ pitch perpendic-
ular with 11/2″ cover; 13′1″ span
restrained.|169 psf|6 hrs|||7|1, 14|6| |F/C-7-RC-38|7″|(4060 psi) concrete deck; 4″ × 3″ × 10 lbs
R.S.J.; 2′6″ C.R.S. with 11/2″ cover on both
top and bottom flanges; 4″ × 6″ × 13 SWG
mesh reinforcement 11/2″ from bottom of
slab; 13′1″ span restrained.|175 psf|6 hrs|||7|1, 14|6| |F/C-7-RC-39|71/4″|53/4″ (4010 psi) concrete core; 1″ T&G
board flooring;1/2″ plaster undercoat;
4″ × 3″ × 10 lbs R.S.J.; 2′6″ C.R.S.CRSC § 12-3 Medium relevance — show source text
12-3-13.2 When the releasing mechanism assembly is provided separately from the security bar assembly in accordance with Section 12-3-3.1, the instruction manual shall describe the compatible security bars that have been investigated and found suitable for use with the releasing assembly. Security bars shall be identified by the manufacturer’s name and model number and maximum dimensions.
12-3-13.3 The installation instructions shall include directions on mounting the actuator inside the room at a height not exceeding 48 inches (1.2 m) from the finished floor.
2025 CALIFORNIA REFERENCED STANDARDS CODE 7
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
8 2025 CALIFORNIA REFERENCED STANDARDS CODE
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12-4A LABORATORY ANIMAL QUARTERS STANDARDS
STANDARD 12-4A-1
DEPARTMENT OF HEALTH SERVICES
Authority: Sections 102, 208 and 25811.
Reference: Sections 102, 208 and 436.5.
LABORATORY ANIMAL QUARTERS
Sec. 12-4A-101. Laboratory animal quarters shall comply with Chapter IV, “Guide for Care and Use of Laboratory Animals,” U.S. Department of Health, Education and Welfare, Publication Number 85-23, Revised 1985.
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12-4-1 STAGE AND PLATFORMS
SMOKE OR HEAT VENTILATORS
STANDARD 12-4-1
STATE FIRE MARSHAL
SMOKE OR HEAT VENTILATORS
Sec. 12-4-100.
(a) Application. The minimum design, construction and performance standard set forth herein for stage and platform smoke or heat ventilators are those deemed necessary to establish conformance to the provisions of these regulations.
(b) Scope. This standard covers ventilators and shutters designed to open under conditions of excessive smoke or heat to provide openings for the release to the atmosphere of accumulated smoke or heat.
A smoke or heat ventilator covered by this standard consists of a prefabricated frame of metal or other noncombustible materials; a cover of noncombustible or plastic materials; an automatic releasing device; and the control rigging. The control rigging may include electrically operated units for normal opening and closing.
(c) Tested and listed component parts. Component parts, devices, combinations of devices and electrical equipment which have been tested and listed by an approved testing agency for the intended purpose need not be individually retested. Such individually tested and listed component parts, devices and equipment shall be subjected to the performance standard tests to determine their suitability for use in the smoke or heat ventilator.
(d) Alternate constructions. Ventilators having materials or forms of construction differing from this standard may be investigated and tested in accordance with these regulations, and if found to be substantially equivalent in performance may be given recognition for approval.
Frequently asked questions
What do the material sections require?
Materials must have adequate mechanical strength and be selected or treated to resist corrosion; specific parts such as O‑rings, gaskets and polymeric materials must meet the referenced UL standards, and dissimilar metals that would cause galvanic corrosion are restricted (§12-3-4.1–§12-3-4.4) .
How are actuators and manual releases regulated?
Manual actuators must permit intuitive finger-, hand- or foot‑actuation with limited motions, must not re‑engage the latch when released, and systems with automatic actuation must include a compliant manual release (§12-3-4.5 and §12-3-3.7) .
Where are actuator installation and documentation requirements found?
Mounting heights and instruction‑manual content for releasing assemblies (including identification of compatible security bars) are addressed in the installation/documentation provisions such as §12-3-13.2–§12-3-13.3 .
More in California Referenced Standards Code
- Administration and scope — CRSC Chapter 12 overview
- Air filter standards (Chapter 12‑71)
- Building and facility access / accessibility standards (Chapters 12‑11A, 12‑11B)
- Engineering regulations — quality and design of construction materials (12‑16 series)
- Exits and means of egress (Chapters 12‑10 series)
- Protective signaling systems and detectors (Chapters 12‑72‑1, ‑2, ‑3)
- Radiation shielding standards (Chapter 12‑31C)
- Referenced standards index / cross‑reference table (Part 12 listing of referenced standards)
- Releasing systems for security bars (egress-release standards)
- Standards for insulating materials (Chapter 12‑13)
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