City of San Mateo Law Library
City of San Mateo Municipal Code.

23.54.090 MINIMUM SECURITY STANDARDS FOR NON-RESIDENTIAL BUILDINGS.

(a) Doors. All exterior doors shall be secured as follows:

(1) A single metal-frame door shall be secured with either a double-cylinder deadbolt or a single-cylinder deadbolt without a turnpiece. A lock, hook, bar, or expanding bolt shall have a throw of three-fourths (3/4) inch to one (1) inch minimum.

(2) Single solid-core doors or hollow sheet-metal doors shall be a minimum of one and three-eights (1-3/8) inches thick and shall be secured with a deadbolt lock with a minimum throw of one inch, locking hardware shall be installed so that both deadbolt and deadlocking latch can be retracted by single action of the inside knob, lever, or thumbturn. When wooden jambs are used, strike plates shall be secured to wooden jambs with at lease two and one- half (2-1/2) inch wood screws. On pairs of doors, the active leaf shall be secured with the type of lock required for single doors in subsection (a)(1) of this section. The inactive leaf shall be equipped with automatic flush extension bolts protected by hardened material with a minimum throw of three-fourths (3/4) inch at head and foot and shall have no door knob or surface mounted hardware. Multiple point locks, cylinder activated from the active leaf and satisfying the requirements, may be used in lieu of flushbolts.

(3) Any single or pair of doors requiring locking at the bottom or top rail shall have locks with a minimum of one throw bolt at both the top and bottom rails.

(4) Panic hardware, whenever required by the Building Code shall be installed in accordance with the manufacturer's recommendations and shall comply with the following:

(A) Doors shall have an astragal constructed of steel 0.125 inches thick which shall be attached with non-removable bolts to the outside of the door if the inside activating member is the type that can be tripped by a fish wire or similar device. The astragal shall extend a minimum of six inches vertically above and below the latch of the panic hardware. The astragal shall be a minimum of two (2) inches wide and extend a minimum of one (1) inch beyond the edge of the door to which it is attached. No surface-mounted exterior hardware need be used.

(B) Double doors containing panic hardware shall have an astragal attached to the doors at their meeting point which will close the opening between them, but not interfere with the operation of either door.

(5) Exterior sliding commercial entrances shall be secured as in section 2.54.080(a)(2) and shall comply with fire and safety regulations.

(6) Exterior roll-up overhead doors, solid overhead swinging, sliding or accordion doors shall be secured with a cylinder lock and/or padlock on the inside, when not otherwise controlled or locked by electric power operation. Masonite panels in such doors shall not exceed eight (8) inches by twelve (12) inches and shall be located so that they are no closer than three (3) feet to any locking device.

(7) Metal accordion grate or grill-type doors shall be equipped with metal guide tracks at top and bottom, and a cylinder lock and/or padlock. The bottom track shall be so designed that the door cannot be lifted from the track when the door is in a locked position.

(8) Outside hinges on all exterior doors shall be provided with non-removable pins when using pin-type hinges or shall be provided with hinge studs.

(9) Doors with glass panels and doors that have glass panels adjacent to the door frame shall be secured as follows:

(A) Rated burglary-resistant glass or glass-like material; or

(B) the glass shall be covered with iron bars of at least one-half (1/2) inch round or on by one-fourth (1/4) inch flat steel material, spaced not more than five inches apart, secured on the inside of the glazing; or

(C) Iron or steel grills of at least one-eighth (1/8) inch material of two (2) inch mesh secured on the inside of the glazing.

(10) Wood doors swinging in shall have rabbited jambs.

(11) Jambs for all doors shall be constructed or protected to prevent violation of the function of the strike.

(12) A double cylinder deadbolt lock or a single cylinder deadbolt lock without a turnpiece may be used in "Group B" occupancies as defined by the California Building Code. When used, there must be a readily visible durable sign on or adjacent to the door stating "This door to remain unlocked during business hours", employing letters not less than one (1) inch high on a contrasting background. The locking device must be of type that will be readily distinguishable as locked, and its used may be revoked by the Building Official for due cause.

(b) Windows.

(1) Accessible rear and side windows not viewable from the street shall consist of rated burglary-resistant glazing or its equivalent.

(2) All accessible windows, capable of being opened, shall be secured on the inside with a locking device.

(3) Louvered windows shall not be used.

(4) Outside hinges on all accessible side and rear glass windows shall be provided with non-removable pins. If the hinge screws are accessible, the screws shall be of the non-removable type.

(5) Accessible windows that open should be equipped with secondary locking devices.

(c) Transoms and Awning Windows. All exterior transoms and awning windows exceeding sixty (60) square inches on the front, side or rear of any building shall be protected by fully tempered glass or rated burglary-resistant glass or glass-like material.

(d) Roof Openings.

(1) All glass or glass-like skylights on the roof of any building shall be provided with:

(A) Rated burglary-resistant glass or glass-like acrylic material; or

(B) Iron bars of at least one-half (1-1/2) inch round or one (1) by one-fourth (1/4) inch flat steel material spaced no more than five (5) inches apart under the skylight and securely fastened; or

(C) A steel grill of at least one-eighth (1/8) inch thick material of two (2) inch mesh under the skylight and securely fastened.

(2) All hatchway openings on the roof of any building shall be secured as follows:

(A) If the hatchway is of wooden material, it shall be covered on the outside with at least sixteen (16) gauge sheet steel or its equivalent attached with screws.

(B) The hatchway shall be secured from the inside with a slide bar or slide bolts. The use of a crossbar or padlock must be approved by the fire marshal.

(C) Outside hinges on all hatchway openings shall be provided with non-removable pins when using pin-type hinges.

(3) All air duct or air vent openings exceeding eight (8) inches by twelve (12) inches on the roof or exterior walls of any building shall be secured by covering the same with either of the following:

(A) Iron bars of at least one-half (1/2) inch round or one by one-fourth (1/4) inch thick flat steel material, spaced no more than five (5) inches apart and securely fastened; or

(B) A steel grill of at least one-eighth inch thick material of two (2) inch mesh and securely fastened; and

(C) If the barrier is on the outside, it shall be secured with galvanized rounded head flushbolts of at least three-eighths (3/8) inch diameter on the outside.

(e) Ladders.

(1) Any ladder, excluding fire escapes, located on the exterior of any building which could provide access to the roof shall be not less than ten (10) feet from any accessible ground area.

(2) Ladders accessible from ground level shall be fully enclosed with sheet metal in an approved manner to a height of ten (10) feet. This covering shall be locked against the ladder with a case hardened hasp, secured with non-removable screws or bolts. Hinges on the cover will be provided with non-removable pins when using pin-type hinges. If a padlock is used, it shall have a hardened shrouded steel shackle, locking at both heel and toe, and a minimum five (5) pin tumbler operation with non-removable key when in an unlocked positions.

(f) Special Security Measures. All entrance doors to individual office suites, in multiple occupancy office building, shall have a deadbolt lock.

(g) Keying Requirements. Upon occupancy by the owner or proprietor, each single unit in a commercial development constructed under the same plan, shall have locks using combinations which are interchange free from locks used in all other separate proprietorships or similar distinct occupancies. Tenants shall have direct access to any room or enclosure which is used to contain metering and/or switching devices for the respective tenant.

(h) Numbering of Buildings. Each different unit within a multiple-tenant building shall have its address prominently displayed on or adjacent to its front and rear doors.

(i) All entrance doors to individual office suites, in multiple occupancy office buildings, shall have a deadbolt lock.