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HomeMy WebLinkAboutOrd 16941 2 3 4 5 6 7 8 9 10 11 12 13' 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ORDINANCE NO. 1694 ORDINANCE OF THE CITY OE BURLINGAME ADOPTING REVISIONS TO TITLE 18, BUILDING CODE, MECHANICAL CODE, PLUMBING CODE, AND ELECTRICAL CODE The City Council of the City of Burlingame ordains as follows: Section 1. The City of Burlingame is located between the Santa Cruz Mountains foothills and San Francisco Bay, with a number of substantial creeks flowing through highly developed residential and industrial areas. It is surrounded by large areas of open space maintained in natural condition, as well as having a significant natural canyon in the center of the residential area. Strong winds come down the foothills during both the driest and the wettest parts of the year. The City is directly east of the San Andreas Fault, and much of the highly developed part of the City is located along the front of the Bay, much of it on fill. The United States Geologic Survey, the California Division of Mines and Geology, and the Association of Bay Area Governments have extensively mapped the area for such earthquake probabilities. The foothill areas have a variety of soil formations with steep canyons and heavy precipitation. Much of the City has a high water table. Fires in the community could quickly spread because of the extensive, natural vegetation throughout the City. The City has a number of highly developed commercial areas with older buildings, and an industrial area that is filled with mixed uses utilizing various materials that could be highly hazardous. In addition, heavily traveled approach and departure routes for San Francisco International Airport are immediately adjacent or over the City. The City is also located in a national climate zone that is designated "Very High" on the Termite Infestation Probability Map. The City has worked with other jurisdictions on the San Francisco Peninsula to establish consistent standards to minimize the impact that varying standards might have on development and redevelopment of both residential and commercial buildings. It is only through strong building standards and effective fire prevention and containment programs that citizens will receive the protection they deserve, and that citizens will be able to obtain reasonably priced insurance for their homes and businesses. In seeking to attain these goals, the building standards in Title 18 have been 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 and are adopted. Section 2. In addition, in order to provide appropriate, clear information to applicants fox construction approvals, Sections 18.07.050 and 18. 12.030 are adopted to conform Title 18 to Zoning Code requirements established in the Municipal Code. Section 3. The City operates its own sanitary sewer system and water quality control plant and is subject to State and Federal laws regarding both point and non -point discharges. Sections 18.07.060, 18.08.0105 18.12.080, 18.12.0905 18.12.100, 18.12.110, 18.12.115, 18.12.120, and 18.12.125 are intended to assist the City in meeting its responsibilities regarding those laws as well as protecting the public safety and welfare. Section 4. The City also operates its own water supply system fox its citizens. Sections 18.07.060,18.12.050,18.12.060,18.12.070, and 18.12.100 areintendedtoprovide consistentpolicy regarding water service installations and to protect the public's water supply. Section 5. Chapter 18.08 is amended to read as follows: Chapter 18.08 BUILDING CODE 18.08.010 Adoption of Uniform Building Code Volume 1. 18.08.020 Adoption of Uniform Building Code Volume 2. 18.08.010 Adoption of Uniform Building Code Volume 1. The rules, regulations and requirements published by the International Conference of Building Officials under the title "1997 Uniform Building Code Volume 1" and adopted as the 2001 California Building Code Volume 1 " including Appendix Chapters 3A (Division I only), 4 (Division I only), 12 (Division IIA only), 15, 31 (Division III only), 33 and 34 and State of California amendments thereto, are adopted as and for the rules, regulations and standards within this city as to all matters therein contained with the following amendments: sisizooz 2 1 2 3 4 5 6 71 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 (a) Section 105 amended —Appeals. Section 105 is amended to read as follows: SECTION 105 —APPEALS An appeal of a denial of or a refusal to issue a perm t or from any other decision of the building official may be taken as set forth in section 18.07.040. (b) Sections 106 through 109 and Table 1-A deleted. Sections 106 through 109 and Table 1-A are deleted. (c) Section 213 amended —Add Definition -Light Frame Construction. Section 213 is amended by adding the following definition: LIGHT -FRAME CONSTRUCTION is a type of construction whose vertical and horizontal structural elements are primarily formed by a system of repetitive wood or light gauge steel framing members. (d) Section 310.6.1 amended -Ceiling Height Section 310.6.1 is amended to read as follows: 310.6.1 Minimum height: Habitable rooms hallways, corridors, bathrooms, toilet rooms, laundry rooms and basements shall have a ceiling height of not less than 7 feet (2134 mm). The height shall be measured from the finished floor to the lowest projection from the ceiling. EXCEPTIONS: 1. Beams and girders spaced not less than 4 feet (1219 mm) on center may project not more than 6 inches (152 mm) below the required ceiling height. 2. Ceilings in basements without habitable spaces may project to within 6 feet, 8 inches (2032 mm) of the finish floor; and beams, girders, a/a/zoo2 3 1 2 3, 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27' 28 ducts or other obstructions may project within 6 feet, 4 inches (1931 mm) of the finished floor. 3. Not more than 50 percent of the required floor area of a room or space is permitted to have a sloped ceng less than 7 feet (2134 mm) in height with no portion of the required floor area less than 5 feet (1524 mm) in height. (e) Section 502 amended —Premises identification required. Section 502 is amended to read as follows: floor SECTION 502 —PREMISES IDENTIFICATION Approved numbers or addresses shall be placed on all new and existing buildings in such aposition as to be plainly visible and legible from the street or road fronting the property. Said numbers shall contrast with their background, shall be a minimum of one-half inch stroke by two and one-half inches high, and shall be either internally or externally illuminated in all new construction, alterations or repair of existing construction. The power of such illumination shall not be normally switchable. Numbers or letters shall be designated on all occupancies within a building. Size shall be a minimum one-quarter inch stroke by two inches high and on a contrasting background. Directional address numbers or letters shall be provided. Said addresses or numbers shall be posted at a height no greater than 5 feet, 6 inches above the finished floor. (f) Section 1203.2 amended -- LIGHT AND VENTILATION IN GROUP R OCCUPANCIES. 8/8/2002 Section 1203.2 is amended to read as follows: 1203.2 LIGHT and VENTILATION -HABITABLE ROOMS. All habitable rooms shall be provided with an aggregate glazing area of not less than 0 8 percent of the floor area of such rooms. Natural ventilation shall be through windows, 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17' 18 19 20 21 22 23 24 25 26 27 28 doors, louvers or other approved openings to the outdoor air. Such openings shall be provided with ready access or shall be otherwise readily controllable by the building occupants. The minimum openable area to the outdoors shall be 4 percent of the floor area being ventilated. EXCEPTIONS: 1. The glazed areas need not be openable if not designated as emergency escape and rescue windows and an approved mechanical ventilation system is provided capable of producing 0.35 air change per hour in the room or a whole -house mechanical ventilation system capable of supplying outdoor ventilation air of 15 cubic feet per minute (cfm (7.08 L/s) per occupant computed on the basis of two occupants for the first bedroom and one occupant for each additional bedroom. 2. The glazed areas need not be provided in rooms where Exception 1 above is satisfied and artificial light is provided capable of producing an average illumination of 6 footcandles (6.46 lux) over the area of the room at a height of 30 inches (762 mm) above the floor level. Bathrooms: Bathrooms, water closet compartments an d other similar rooms shall be provided with aggregate glazing area in windows of not less than 3 square feet (0.279 square meter), one-half of which must be openable. EXCEPTION: The glazed areas shall not be required where artificial light and a mechanical ventilation fin (9.4 system are provided. The minimum ventilation rates shall be 50 cfm (23.6 Us) for intermittent ventilation or 20 (9.4 L/s) for continuous ventilation. Ventilation air from the space shall be exhausted directly to the outside. (g) Section 1203.3 deleted -- Ventilation. Sect on 1203.3 is hereby deleted. siai2oo2 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21' 22 23 24 25 26 27 28 (h) Section 1503 amended — Roof covering requirements. The first paragraph of Section 1503 is amended to read as follows: All materials applied as roof covering on any structure regulated by this code shall have a fire retardant rating of Class A or B as specified in Table 15-A as amended herein, treated in accordance with UBC Standard 15-7. EXCEPTIONS: 1. Detached patio covers, spa covers, gazebos and sheds with 120 square feet or less of projected roof area, and awning covers, are exempt from Section 1503 and Appendix Section 1514. 2. Roof covering repairs of less than 300 square feet are exempt from Section 1503 and Appendix Section 1514. (i) Section 1506.5 amended -Roof and surface drainage requirements. Section 1506.5 is amended to read as follows: 1506.5 Roof and Surface Drainage Requirements. 1.506.5.1 In all zones other than R-1, the water from the roof of any building and from any paved area which would flow by gravity over public sidewalk shall be carried by means of conductors under the sidewalk and through the curb to the gutt er, or other approved location. 1506.5.2 No storm water or underground water draining from any lot, building, or paved area shall be allowed to drain to adjacent properties nor shall this water be connected to the city's Sanitary sewer system. Regardless of the slope of the source property, such water shall drain to either artificial or natural storm drainage facilities by gravity or pumping. (j) Appendix Chapter 15 amended -Reroofing requirements. The following portions of Sections 1514 and 1521 of Appendix Chapter 15 are amended I as follows: sisizooz L^• 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 (1) The second paragraph of Section 1514 is amended to read: Roof covering materials shall be fire retardant Class A or Class B in accordance with Tables 15-A and 15-13-2 as amended, and reroofing materials and methods of application shall comply with the applicable UBC Standards or shall follow the manufacturer's installation requirements when approved by the building official. (2) Section 1521 of Appendix Chapter 15 is amended by adding the following sentence at the end of the section: Such roofing materials shall comply with the fire retardancy requirements of Section 18.08.080. (k) Table 15 -A --Roof Minimum fire retardant classes. Table No. 15-A is amended to read as follows: TABLE NO. 15-A —MINIMUM ROOF CLASSES TYPES OF CONSTRUCTION I II III IV V OCCUPANCY FR FR I HR N 1 HR N HT N A-1 B B -A-2, A-2.1 B B B B B B B F B A-3 B B B B B B B B A-4 B B B B B B B B B B B B B B B B B B B E B B B B B B B B B F B B B B B B B B B H-1 A A - - H-2 thru H-6 A B B B B B B1-1 thru I-2.1 A B eBB B B B I-3 A B M B B B B B B B 8/8/2002 7 1 2 3 4 5 6 7 8 9 10 11 12 13' 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 A -Class A Roofmg B -Class B Roofing C -Class C Roofing HT -Heavy Timber FR -Fire Resistive All footnotes are deleted PRESSURE TREATED PRESSURE TREATED (L� Table 15-B-2 — Wood shingle or shake application. Sections 1 through 3 of Table 15-13-2 are amended to read as follows: TABLE NO. 15-B-2 —SHINGLE OR SHAKE APPLICATION FIRE -RETARDANT FIRE RETARDANT PRESSURE TREATED PRESSURE TREATED WOOD SHINGLES WOOD SHAKES ROOF SLOPE Not permitted below 3:12 Not permitted below 4:12' 1. Deck requirements Shingles and shakes shall be applied to roofs with solid sheathing. 2. Interlayment No requirements. One 18 -inch wide interlayment of Type 30 felt shingled between each course in such a manner that no felt is exposed to the weather below the shake butts. 3. Underlayment Metal foil with Type 30 felt The above material shall be liner between courses or other placed over metal foil with underlayment that would allow Type 30 felt liner between the roof covering and assembly courses or other underlayment to achieve Class B rating. to achieve a Class B rating. ' When approved by the Building Official, wood shakes may be installed on a slope of not less than 3 8/8/2002 8 1 2 3 4 5 6 7 8 9 10 11 121 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 inches in 12 inches when an underlayment of not less than nonperforated Type 15 felt is installed. section: 8/8/2002 (m) Section 1611.6 amended —Retaining wall requirements. Section 1611.6 is amended by adding the following two paragraphs at the end of the When a structure is to support a lateral load which retains fill which supports another structure, supports the toe of a slope which is over four feet in height measured from the bottom of the footing, or is required by the city engineer, it shall be designed by a licensed architect or engineer and approved by the city engineer. The following types of retaining walls shall be of concrete or other material which shall have a minimum service life of 75 years for all major support systems and 50 years for all replaceable support systems: Walls that are engineered, support a lateral load over 18" at property line, support an engineered surcharge, support a structure, or support a toe of a slope. A fence structure may not be substituted for a retaining wall. (n) Section 1904.4 amended --Minimum slab thickness. Section 1904.4 is amended to read as follows: 1904.4 The minimum thickness of concrete floor slabs shall be 3-1/2 inches (89 mm). Membrane waterproofing or waterproofing acceptable to the building official shall be provided. Such granular material shall be approved by the building official. Concrete slabs on grade shall be reinforced with not less than six inch by six inch ten gauge wire mesh install ed at the nominal mid -point of the slab thickness. (o) Section 3403 amended —Additions, alterations or repairs -Suspended ceiling WO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26' 27 28 upgrade. Section 3403 is amended by adding a new Subsection 3403.6 to read as follows: Section 3403.6 Suspended Ceiling Upgrade. When an addition, alteration or repair is performed on an occupancy in which there is an existing suspended ceiling, such suspended ceiling shall be modified throughout to comply with the lateral design requirements of UBC Standard 25-2. 1808.020 Adoption of Uniform Building Code, Volume 2. The rules, regulations and requirements published by the International Conference of Building Officials under the title "1997 Uniform Building Code Volume 2" and adopted as the 2001 California Building Code Volume 2" is adopted as and for the rules, regulations and standards within this city as to all matters therein contained except as amended as follows: (a) Section 1612.2.1 amended -- General. Section 1612.2.1 is amended to read as follows: 1612.2.1 Basic load combinations. Where Load and Resistance Factor Design (Strength Design) is used, structures and all portions thereof shall resist the most critical effects from the following combinations of factored loads: 1.4D (12-1) 1.2D + 1.6L + 0.5 (L, or S) (12-2) 1.2D + 1.6 (L, or S) + (f, L or 0.8 W) (12-3) 1.2D+1.3W+(f,L+0.5 (L,orS) (12-4) L2D + 1.0E + (f, L + fz S) (12-5) 0.9D + (1.OpE,, or 1.3W) (12-6) WHERE: f, = 1.0 for floors in places of public assembly, for live loads in excess of 100 psf (4.91cN/m� ), and for garage live load. 0.5 for other live loads. s/a/zooz 1 0 1' 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 fZ = 0.7 for roof configurations (such as saw tooth) that do not shed snow off the structure. 0.2 for other roof configurations. EXCEPTIONS: 1. Factored load combinations for concrete per Section 1909.2 where load combinations do not include seismic forces. 2. Where other factored load combinations are specifically required by the provisions of this code. (b) Section 1612.3.1 amended —Basic Load Combinations. The last sentence in section 1612.3.1 is amended to read as follows: No increase in allowable stresses shall be used with these load combinations except as specifically permitted elsewhere in this code and the duration of load increase permitted in Division III of Chapter 23. (c) Section 1612.3.2 amended —Alternate Basic Load Combinations. The last sentence of the first paragraph of the section is amended to read: When using these altern ate basic load combinations, acne -third increase shall be permitted in allowable stresses for all combinations including W or E but not concurrent with the duration of load increase permitted in Division III of Chapter 23. (d) Section 1629.4.2 amended —Seismic Zone 4near-source Factor Section 1629.4.2 is amended to read as follows: 1629.4.2. Seismic Zone 4near-source factor. In Seismic Zone 4, each site shall be assigned anear-source factor in accordance with Table 16-S and the Seismic Source Type set forth in Table 16-U. The value of N used in determining Caneed not exceed 1.1 fox structures complying with all the following conditions: 1. The soil profile type is Sj, SB, Sc or SD. s/s/zooz 11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2. p = 1.0. 3. Except in single -story structures, Group R, Division 3 and Group U, Division 1 Occupancies, moment frame systems designated as part of the lateral - force -resisting system shall be special moment -resisting frames. 4. The provisions in Sections 9.6a and 9.6b of AISC - Seismic Part 1 shall not apply, except for columns in one-story buildings or columns at the top story of multistory buildings. 5. None of the following structural irregularities is present: Type 1, 4 or 5 of Table 16-L, and Type 1 or 4 of Table 16-M. (e) Table 16-N amended Table 16-N is amended to read as follows: TABLE 16-N — STRUCTURAL SYSTEMS' BASIC STRUCTURAL SYSTEM LATERAL -FORCE -RESISTING SYSTEM DESCRIPTION R 620 HEIGHT LIMIT FOR SEISMIC ZONES 3 AND 4 (feet) x 304.8 form mm 1. Bearing wall system 1. Light -framed walls with shear panels a. Wood structural panels for structures 5.5 2.8 65 three stories or less b. All other light -framed walls 4.5 2.8 65 2. Shear walls a. Concrete 4.5 2.8 160 b. Masonry 4.5 2.8 160 3. Light steel -framed bearing walls with 2.8 2.2 65 tension -only bracing 4. Braced frames where bracing carries gravity load a. Steel 4.4 2.2 160 b. Concrete' 2.8 2.2 c. Heavy timbers 2.8 2.2 65 8/8/2002 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 2. Building frame system 1. Steel eccentrically braced frame (EBF) 7.0 2.8 240 2. Light -framed walls with shear panels a. Wood structural panel walls for 6.5 2.8 65 structures three stories or less b. All other light -framed walls 5.0 2.8 65 3. Shear walls a. Concrete 5.5 2.8 240 b. Masonry 5.5 2.8 160 4. Ordinary braced frames a. Stec16 5.6 2.2 356 b. Concrete' 5.6 2.2 -5 c. Heavy timber 5.6 2.2 65 5. Special concentrically braced frames a. Steel 6.4 2.2 240 3. Moment -resisting frame I. Special moment -resisting frame (SMRF) system a. Steel 8.5 2.8 N.L. b. Concrete4 8.5 2.8 N.L. 2. Masonry moment -resisting wall frame 6.5 2.8 160 (MMRWF) 3. Intermediate moment -resisting frame (1M RF) a. Steel' 4.5 2.8 356 b. Concrete' 5.5 2.8 ---- 4. Ordinary moment -resisting frame (OMRF) 3.5 2.8 35' a. Steel' 3.5 2.8 b. Concretes 6.5 2.8 240 5. Special truss moment frames of steel (STMF) 4. Dual systems 1. Shear walls a. Concrete with SMRF 8,5 2.8 N.L. b. Concrete with concrete IMRF5 6.5 2.8 c. Masonry with SMRF 5.5 2.8 d. Masonry with IN/FRF' 4.2 2.8 - e. Masonry with masonry MMRWF 6.0 2.8 160 2. Steel EBF a, With steel SMRF 8.5 2.8 N.L. 3. Special concentrically braced frames a. Steel with steel SMRF 7.5 2.8 N.L. 5. Cantilevered column building 1. Cantilevered column elements 2.2 2.0 357 systems 6. Shear wall -frame interaction 1. Concrete' 5.5 2.8 160 systems 7. Undefined systems See Sections 1629.6.7 and 1629.9.2 - - - N.L.- no limit ' See Section 1630.4 for combination of structural systems. z Basic structural systems are defined in Section 1629.6. s Prohibited in Seismic Zones 3 and 4. 8/8/2002 13 4 D 7 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Includes precast concrete conforming to Section 1921.2.7. Prohibited in Seismic Zones 3 and 4, except as permitted in Section 1634.2. In Seismic Zones 3 and 4 steel IMRF's, OMRF's and steel ordinary braced frames are permitted as follows: e.i Structures using Steel IMRF's and OMRF's are permitted to a height of 35 ft. where the total dead weight of the floors, walls and roof do not exceed 35 psf. or for single - story buildings where the moment joints of field connections are constructed of bolted end plates and the dead load of the roof does not exceed 15 psf the height is permitted to be increased to 60 ft. 62 Steel ordinary braced frames are permitted in penthouse structures and in other one-story buildings or structures where the total dead weight of the roof does not exceed 15 psf, and the height of the building or structure does not exceed 60 feet. Total height of the building including cantilevered columns. Prohibited in Seismic Zones 2A, 213, 3 and 4. See Section 1633.2.7. 8/8/2002 (tJ Section 1630.2.3.5 renumbered to Section 1630.2.3.4 Section 1630.2.3.4 is renumbered as Section 1630.2.3.5. (g) Section 1630.2.3.4 added —New section on Horizontal Distribution. A new Section 1630.2.3.4 is added to read: 1630.2.3.4 Horizontal Distribution. Diaphragms constructed of untopped steel decking or wood structural panels or similar light -frame construction are permitted to be considered as flexible. (h) Section 1630.4.2 amended —Vertical Combinations. A sentence is added to the end of the last paragraph to read: This ratio shall not be taken less than 1.0 (i) Section 1630.7 amended —Horizontal Torsional Moments. Section 1630.7 is amended to read as follows: 1630.7 Horizontal Torsional Moments. Provisions shall be made for the increased shears resulting from horizontal torsion where diaphragms are not fl exible. The most severe load combination for each element shall be considered for design. The torsional design moment at a given story shall be the moment resulting from eccentricities between applied design lateral forces at levels above that story 1� 1 2 3 4 5 6 7 8 9'. 10'. 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 and the vertical -resisting elements in that story plus an accidental torsion. The accidental torsional moment shall be determined by assuming the mass is displaced as required by Section 1630.6. Where torsional irregularity exists, as defined in Table 16-M, the effects shall be accounted for by increasing the accidental torsion at each level by an amplification factor, A,, determined from the following formula: A x — 0 max 1 � (30-16)I .2 (Savg J WHERE: S x =the average of the story drift -at the extreme points of the structure at Level x. S � = the maximum displacement story drift -at Level x. The value of Ax need not exceed 3.0. (j) Section 1630.8.2.1 amended —General. Section 1630.8.2.1 is amended to read as follows: 1630.8.2.1 General. Where any portion of the lateral -load -resisting system is discontinuous, such as for vertical irregularity Type 4 in Table 16-L or plan irregularity Type 4 in Table 16-M, columns, beams, trusses or slabs support ing such discontinuous systems shall have the design strength to resist the combination loads resulting from the special seismic load combinations of Section 1612.4. The Connections of such discontinued elements to the supporting members shall be adequate to tran to be designed. smit the forces for which the discontinuous elements were required EXCEPTIONS: 1. The quantity Em in Section 1612.4 need not exceed the maximum force that can be transferred to the element by the lateral -force -resisting system. 2. Concrete slabs supporting light -frame wood shear wall systems or light -frame steel and wood structural panel shear wall systems. aisizooz 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 For Allowable Stress Design, the design strength may be determined using an allowable stress increase of 1.7 and a resistance factor, T. of 1.0. This increase shalI not be combined with the one-third stress increase permitted by Section 1612.3, but may be combined with the duration of load increase permitted in Chapter 23, Division 111. (k) Section 1630.8.2 amended —Detailing Requirements in Seismic Zones 3 and 4. Section 1630.8.2.2 is amended to read as follows: 1630.8.2.2 Detailing requirements in Seismic Zones 3 and 4. In Seismic Zones 3 and 4, elements supporting discontinuous systems shall meet the following detailing or member limitations: 1. Reinforced concrete or reinforced masonry elements designed primarily as axial -load members shall comply with Section 1921.4.4.5. 2. Reinforced concrete elements designed primarily as flexural members and supporting other than light -frame wood shear wall systems or light -frame steel and wood structural panel shear wall systems shall comply with Sections 1921.3.2 and 1921.3.3. Strength computations for portions of slabs designed as supporting elements shall include only those portions of the slab that comply with the requirements of these Sections. 3. Masonry elements designed primarily as axial -load carrying members shall comply with Sections 2106.1.12.4, Item 1, and 2108.2.6.2.6. 4. Masonry elements designed primarily as flexural members shall comply with Section 2108.2.6.2.5, 5. Steel elements designed primarily as flexural members or trusses shall have bracing for both top and bottom beam flan ges or chords at the location of the support of the discontinuous system and shall comply with the requirements of AINC-Seismic Part I, Section 9.4b. a/s/zooz 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22' 23 24 25 26 27 28 (1) Section 1630.10.2 amended — Calculated. Section 16-30, 102 is amended to read as follows: 1630.10.2 Calculated. Calculated story drift using OM shall not exceed 0.025 times the story height for structures having a fundamental period of less than 0.5 second. For structures having a fundamental period of 0.5 second or greater, the calculated story drift shall not exceed 0.020/T " times the story height. (Note: EXCEPTIONS remain unchanged) (m) Section 1630.10.3 amended —Limitations. Section 1630.10.3 is amended to read as follows: 1630.10.3 Limitations. The design lateral forces used to determine the calculated drift may disregard the limitations of Formula (30-6) and (30-7) (Errata Mar. 2001) and may be based on the period determined from Formula (30-10) neglecting the 30 or 40 percent limitations of Section 1630.2.2, Item 2. (n) Section 1633.2.4 amended —Deformation Compatibility. Section 163 3.2.4 is amended to read as follows: 1633.2.4 Deformation compatibility. All structural framing elements and their connections, not required by design to be part of the lateral -force -resisting system, shall be designed and/or detailed to be adequate to maintain support of design dead plus live loads when subjected to the expected deformations caused by seismic forces. P4 effects on such elements shall be considered. Expected deformations shall be determined as the greater of the Maximum Inelastic Response Displacement, AM, considering Pd effects determined in accordance with Section 1630.9.2 or the deformation induced by a story drift of 0.0025 times the story height. When computing expected deformations, the stiffening effect of those elements not part of the lateral -force -resisting system shall be neglected. For elements not part of the lateral -force -resisting system, the forces 8/8/2002 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 induced by the expected deformation may be considered as ultimate or factored forces. When computing the forces induced by expected deformations, the restraining effect of adjoining rigid structures and nonstructural elements shall be considered and a rational value of member and restraint stiffness shall be used. Inelastic deformations ofinembers and connections arepermitted to occur, provided the assumed calculated capacities are consistent with member and connection design and detailing. (o) Section 1915.2.2 amended —Loads and Reactions. Section 1915.2.2 is amended to read as follows: 1915.2.2 Base area of footing or number and arrangement of piles shall be determined from the external forces and moments (transmitted by footing to soil or piI es) and permissible soil pressure or permissible pile capacity selected through principles of soil mechanics. External forces and moments are those resulting from the load combinations of Section 1612.3. (p) Section 2204.1 amended —Load and Resistance Factor Design Section 2204.1 is amended by deleting the last sentence. end of the first sentence. (q) Section 2204.2 amended —Allowable Stress Design. Section 2204.2 is amended by deleting the last sentence. (r) Section 2205.3 amended —Seismic Design Provisions for Structural Steel. Section 2205.3 is amended by deleting the words "or V" at the end of the first sentence. (s) Division IV of Chapter 22 amended —Seismic Provisions for Structural Steel Buildings. The subtitle of Division IV is amended to read as follows: 8/8/2002 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23' 24 25 26 27 28 Based on Seismic Provisions for Structural Steel Buildings of the American Institute of Steel Construction. Parts I and III, dated April 15,1997 and Supplement No. 2, dated November 10, 2000 (t) Section 2210 amended —Adoption. Section 2210 is amended to read as follows: SECTION 2210 —ADOPTION Except for the modifications set forth in Sections 2211 and 2212 of this division and the requirements of this Code, the seismic design, fabrication, and erection of structural steel buildings shall be in accordance with the Seismic Provisions for Structural Steel Buildings, April 15, 1997 published by the American Institute of Steel Construction, 1 East Wacker Drive, Suite 3100, Chicago, IL 60601, as if set out at length herein. The adoption of Structural Provisions for Structural Steel Buildings in this Division , hereinafter referred to as AISC-Seismic, shall include Parts I (LRFD), and III (ASD), and Supplement No. 2, dated November 10, 2000. Where other codes, standards, or specifications are referred to in this specification, they are to be considered as only an indication of an acceptable method or material that can be used with the approval of the Building Official. (u) Section 2211 amended --Design Methods. Section 2211 is amended to read as follows: SECTION 2211— DESIGN METHODS When the load combinations fr om Section 1612.2 for LRFD are used, structural steel buildings shall be designed in accordance with Chapter 22 Division II (AISC-LRFD) and Part I of AISC-Seismic as modified by this Division. 8/8/2002 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 8/8/2002 When the load combinations from Section 1612.3 for ASD are used, structural steel buildings shall be designed in accordance with Chapter 22 Division III (AISC-ASD) and Part III of AISC-Seismic as modified by this Division. (v) Section 221.2 amended -- General. Section 2212 is amended to read as follows: SECTION 2212 —AMENDMENTS The AISC-Seismic adopted by this Division apply to the seismic design of structural steel members except as modified by this Section. The following terms that appear in AISC-Seismic shall be taken as indicated in the 1997 Uniform Building Code: AISC Seismic Seismic Force Resisting System Design Earthquake Load Combinations Eqs. (4-1) and (4-2) LRFD Specification Sections Eqs. (A4- 1)through oQE 1997 Uniform Building Code Lateral Force Resisting System Design Basis Ground Motion Chapter 16 Eqs. (12-17) and (12-18) respectively Chapter 16 Eqs. (12-1) through (12-6) respectively Em 1. Part I, Sec. 1 of the AISC Seismic Provisions is revised as follows: 1. SCOPE These provisions are intended for the design and construction of structural steel members and connections in the Seismic Force Resisting Systems in buildings for which the design forces resulting from eart hquake motions have been determined on the basis of various levels of energy dissipation in the inelastic range of response. These provisions shall apply to buildings in Seismic Zone 2 with an importance factor I greater than one, 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 in Seismic Zone 3 and 4 or when required by the Engineer of Record. These provisions shall be applied in conjunction with, Chapter 22, Division II, hereinafter referred to as the LRFD Specification. All members and connections in the Lateral Force Resisting System shall have a design strength as provided in the LRFD Specification to resist load combinations 12-1 through 12-6 (in Chapter 16) and shall meet the requirements in these provisions. Part I includes a Glossary, which is specifically applicable to this Part, and Appendix S. 2. Part I, Sec. 4.1, first paragraph of the AISC Seismic Provisions is revised as follows: 4.1 Loads and Load Combinations The loads and load combinations shall those in Section 1612.2 except as modified throughout these provisions. (w) Chapter 23, Division III amended —Design Specifications for Allowable Stress Design of Wood Buildings. The introduction to Chapter 23, Division III Part I -ALLOWABLE STRESS DESIGN OF WOOD is amended to read: 8/8/2002 Division III -DESIGN SPECIFICATIONS FOR ALLOWABLE STRESS DESIGN OF WOOD BUILDIN GS Part I -ALLOWABLE STRESS DESIGN OF WOOD This standard, with certain exceptions, is the ANSI/NFoPA NDS -97 National Design Specification for Wood Construction of the American Forest and Paper Association, 1997 Edition, and the Supplement to the 1997 Edition, National Design Specification, adopted by reference. 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 NDS". The National Design Specification for Wood Construction, 1997 Edition, and supplement are available from the American Forest and Paper Association, 1111 19th Street, NW, Eighth Floor, Washington, DC, 20036. (%) Secfion 2316 amended —Design Specifications. Section 2316 is amended by replacing the phrase "revised 1991" with"1977 Edition (y) Section 2316.2 Amendments Delete Reference and Accompanying Table Section 2316.2 is amended by deleting Item 27 NDS Supplement and accompanying Table SA (z) Section 2320.11.3 amended —Conventional Construction Provisions (Bracing) Item 5 Deleted. Section 2320.11.3, Item 5 (gypsum board bracing) is deleted. (aa) Section 2320.11.3 amended —Conventional Construction Provisions (Bracing) Item 7. Section 2320.11.3, Item 7 is amended to read as follows: 7. Port of Group R-3 an land cement plaster on studs spaced 16 inches on center installed in accordance with Table No. 25-1. Limited to one story structures d U-1 occupancies. Section 6. Section 18.09.010 is amended to read as follows: 18.09.010 Adoption of Uniform Mechanical Code. The rules, regulations and standards printed in one volume and published by the International Conference of Building Officials under the title "1997 Uniform Mechanical Code" and adopted as the "2001 California Mechanical Code," including the appendices and 7/30/2002 22 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 State of California amendments thereto, hereinafter called "mechanical code," is adopted as and for the rules, regulations and standards within this city as to all matters therein contained, except as otherwise provided in this chapter. The appendices to the mechanical code shall be enforceable to the same extent as if contained in the body of the code. Section 7. Chapter 18.12 is amended to read as follows: Chapter 18.12 PLUMBING CODE 18.12.010 A1997 Uniform Plumbing Code" and adopted as the "Californ Adoption of Uniform Plumbing Code. 18.12.020 Appeals. 18.12.025 Subsection 311.9 added — Prohibited fittings and practices. 18.12.030 Section 510.7 amended — Water heater safety pans. 18.12.035 Section 604.1 amended — Materials. 18.12.040 Section 604.11 added — PEX. 18.12.050 Section 605.3.1 added — Water supply shutoff valves. 18.12.060 Section 609.3 amended — Water piping installed in or under a concrete slab. 18.12.070 Section 610.8.1 added — Water service over two inches. 18.12.080 Section 710.1 amended — Drainage piping below main sewer level. 18.12.090 Section 719.7 added — Building sewer clean-out. 18.12.100 Section 807.2 amended — Condensate waste water disposal. 18.12.110 Disposal of rainwater drainage. 18.12.115 Rainwater drainage to paved gutter. 18.12.120 Rainwater drainage across public sidewalk prohibited. 18.12.125 Elimination of existing rainwater drainage required. 18.12.010 Adoption of Uniform Plumbing Code. The rules, regulations and standards printed in one volume and published by the International Association of Plumbing and Mechanical Officials (IAPMO), under the title ia Plumbing Code, 2001 Edition," including the appendices A and D, and State of California amendments thereto, hereinafter called "plumbing code," is adopted as and for the rules, regulations and standards within this city as to all matters therein contained, except as otherwise provided in this chapter. The appendices specified herein shall be enforceable to the same extent as if contained in the body of the plumbing code. 18.12.020 7/30/2002 Appeals. 23 1 2 3 4 5 6'. 8' 9'', 10' 11'' 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 An appeal of a denial of or a refusal to issue a permit or from any other decision of the building official may be taken as set forth in section 18.07.040. 18.12.025 Section 311.9 added -Prohibited Tittings and practices. Section 311.9 is added to read as follows: 311.9 Exterior Pipes. No plumbing drain vent pipe nor water, soil, waste, or gas pipe shall be installed on, or attached to, the outside face of an exterior wall of a residential building without the prior written permission of the building official. Such installation shall be enclosed in such a way as to be obscured from view. 18.12.030 Section 510.7 amended -Water heater safety pans. Section 510.7 is amended to read as follows: 510.7 Each water heater located in an attic, furred space, living area or other location where leakage would result in damage to the building or its contents shall have a safety pan with drain. Safety pans shall be metal and be nominal two inches in diameter larger than the water heater, with a minimum depth oftwo inches. The drain pipe shall bethree-quarter inch trade size minimum; shall terminate outside the building foundation or, where this is not practical or possible, at an other location approved by the building inspector; and shall have a continuous minimum slope throughout its length of one-quarter inch, per foot away fr om the water heater. I 18.12.035 Section 604.1 amended -Materials. Section 604.1 is amended to read as follows: 7/30/2002 604.1 Water distribution pipe, building supply water pipe and fittings shall be of brass, copper, cast iron, galvanized malleable iron, galvanized wrought on, galvanized steel, or other approved materials. Asbestos -cement, CPVC, 1 2 3 4 5 6 7 8 9 10 11 12 13 14, 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PE, PVC, or PEX water pipe manufactured to recognized standards may be used for cold water distribution systems outside a building. CPVC, PEX water pipe, tubing, and fittings, manufactured to recognized standards may be used for hot and cold water distribution systems within a building. All materials used in the water supply system, except valves and similar devices shall be of a like material, except where otherwise approved by the Building Official. 18.12.040 Section 604.11 added-PEX. Section 604.11 is added to read as follows: 604.11 PEX. Cross-linked polyethylene (PEX) tubing shall be marked with the appropriate standard designation(s) listed in Table 14-1 for which the tubing has been listed or approved. PEX tubing shall be installed in compliance with the provisions of this section. 604.11.1PEXFittings. Metal Insert Fittings and Metal Compression Fittings used with PEX tubing shall be manufactured to and marked in accordance with the standards for the fittings in Table 14-1. 604.11.2 Water Heater Connections. PEX tubing shall not be installed within the first eighteen (18) inches (457 mm) of piping connected to a water heater. 18.12.050 Section 605.3 amended -Water supply shutoff valves. Section 605.3 is amended to read as follows: 7/30/2002 605.3 Agate shutoff valve shall be installed on each water supply pipe at an accessible point where such supply enters abuilding. In multi -unit residential buildings, a gate shutoff valve shall be installed on each water supply pipe at an accessible point where such supply enters each apartment or dwelling unit; or, where an apartment or dwelling unit is supplied by a vertical riser, a 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25, 26 27 28 separate accessible shutoff valve may be provided at each plumbing fixture in the unit in lieu of the shutoff valve on the main supply to the unit. 18.12.060 Section 609.3 amended -Water piping installed in or under a concrete slab. The first paragraph of Section 609.3 is amended to read as follows: Water piping shall not be installed in or under a concrete floor slab within a building without prior written approval of the building official. When such approval is obtained, such piping shall be installed in accordance with the following requirements: 18.12.070 Section 610.8.1 added -Water services over two inches. Anew subsection 610.8.1 is added to read as follows: 610.8.1 Water Services Over 2 inches. Design details, methods and materials for construction of water services over 2 inches in diameter shall conform with the specifications for the construction of such work as compIled by the city engineer. These specifications maybe changed fr om time to time at the option of the city engineer, but such changes shall in no way effect the validity of the regulations or requirements contained therein or the regulations and requirements of this code. 18.12.080 Section 710.1 amended -Drainage piping below main sewer level. Section 710.1 is amended to read as follows: 710.1 Drainage piping serving fixture(s) which have flood level rim(s) 7/30/2002 less than twelve inches above the elevation of the next upstream manhole and/or flushing inlet cover at the public sewer system serving such drainage piping shalI be protected from backflow of sewage by the installation of a backwater 26 1 2 3'' 41 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 valve approved by the building official. Fixtures above such elevation shall not discharge through the backwater valve without prior written approval of the building official. 18.12.090 Section 719.7 added -Building sewer clean-out. A new section 719.7 is added to read as follows: 719.7 When a building sewer is located under a street, alley or easement, there shall beprovided a cleanout, installed flush with the sidewalk level next to curb; or, if no curb or sidewalk exist, then the cleanout must be located outside of the lot line. The cleanout riser shall be of materials specified by the city engineer, shall be the same size as the drain it serves, shall be connected to the building drain by a wye, shall be brought up to the level of the ground, and shall be terminated at the top with a cleanout fitting as specified by the city engineer. If the riser terminates at concrete sidewalk a cast iron sidewalk box with loose cover fitting with brass screws shall be installed. The minimum size for a cleanout riser shall be four inch trade size pipe. 18.12.100 Section 807.2 amended -Condensate waste water disposal. Section 807.2 is amended to read as follows: 807.2 Condensate from air cooling coils and comfort cooling equipment not intended to be used for the storage or handling of food or drink shall be coll ected and discharged to a storm sewer or other point of disposal approved by the building official. Termination of such drains shall be made by an air break. Condensate drain lines in sizes of one and one-quarter inch and larger shall be assembled using approved drainage pipe and fittings. Condensate waste water shall not drain over or upon a sidewalk, 7/30/2002OWN 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 pedestrian ramp or the like, or a public way. 18. 12.110 Disposal of rainwater drainage. Rainwater from roof or other approved areas exposed to rainwater maybe drained into the storm dra nage system, but shall not drain into any sewer intended for sanitary sewage. 18.12.115 Rainwater drainage to paved gutter. Rainwater from roofs and other approved areas exposed to rainwater may drain into apublic street gutter, provided that such gutter is paved and runs to a catch basin connected to a public storm drain, and provided further that such drainage has the approval of the city engineer or other public authority having jurisdiction over public streets or public storm drains. 18.12.120 Rainwater drainage across public sidewalk prohibited. No rainwater fr om roofs, or other rainwater drainage of premises, shall discharge upon apublic sidewalk. When it is desired to conduct rainwater fr om a building or premises to apublic street gutter, the outside underground drainage piping shall be vitrified clay pipe, ABS, PVC, galvanized wrought iron pipe, galvanized steel pipe, approved concrete pipe, asbestos cement sewer pipe, cast iron pipe or other materials approved by the building official. When clay pipe, ABS, PVC, asbestos cement sewer pipe or approved concrete pipe is used, such pipe shall bean imi'murn of two feet horizontally from the building and one foot below the official grade. Water leaders connected to such background drainage pipe which are on the outside of the building wall that abuts on a public thoroughfare, shall be constructed of galvanized wrought iron pipe, galvanized steel pipe, or cast iron pipe for a distance of not less than five feet vertically above the Official grade. See Section 18.08.0100) for exception for such drainage in R-1 districts. 7/30/2002 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 18.12.125 Elimination of nonconforming rainwater drainage required. Every existing drainage of rainwater into a sanitary sewer in violation of the provisions of this chapter shall be altered or terminated or replaced so as to conform to the provisions of this chapter. Section 8. Chapter 18.16 is amended to read as follows: Chapter 18.16 ELECTRICAL CODE 18.16.010 Adoption of National Electrical Code. 18.16.020 Section 230-70(A) amended — Main switch accessible from exterior. 18.16.030 Exterior lighting restricted. 18.16.010 Adoption of National Electrical Code. The rules, regulations and standards printed in one volume and published by the National Eire Protection Association under the title "National Electrical Code, 2002 Edition" with amendments as contained in the "2001 California Electrical Code", including the appendices, and the Uniform Administrative Code Provisions (I.C.B.O.) of said code, are adopted as and for the rules, regulations and standards within this city as to matters therein contained except as provided in this chapter. The mandatory requirements of the appendices to the code shall be enforceable to the same extent as if contained in the body of the code. Article 80 is expressly not adopted. 18.16.020 Section 230.70(A)(1) amended -Main switch accessible from exterior. Section 230.70(A)(1) is amended to read as follows: (1) Main Switch Location. The main switch location shall be accessible fr 7/30/2002 om the exterior of a building. If, due to structural or architectural conditions, it is not possible to make the main switch accessible from the building exterior a shunt trip disconnecting all active electrical conductors shall be installed at an accessible exterior location. 29 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 18.16.030 Exterior lighting restricted. (a) Exterior lighting on all residential and commercial properties shall be designed and located so that the cone of light and/or glare from the lighting element is kept entirely on the property or below the top of any fence, edge or wall. (b) On all residential properties exterior lighting outlets and fixtures shall not be located more than nine (9) feet above adjacent grade or required landing; walls or portions of walls shall not be floodlit; only shielded light fixtures which focus light downward shall be allowed, except for illuminated street numbers required by the fire department. (c) Variances to the provisions of this section may be approved by the planning commission, pursuant to the provisions of Chapter 25.16 of this code, except that notice of the application for the variance shall only be given to property owners within fifty feet. (d) This section shall not apply to signs having an approved permit for an illuminated sign pursuant to Title 22 of this code. Section 9. This ordinance shall be published as required by law. I, ANN T. MUSSO, City Clerk of the City of Burlingame, do hereby certify that the foregoing ordinance was introduced at a regular meeting of the City Council held on the 5"' day of August, 2002, and adopted thereafter at a regular meeting of the City Council held on the 3 rd day of September, 2002, by the following vote: AYES: COUNCILMEMBERS: BAYLOCK, COFFEY, GALLIGAN, JANNEY, O'MAHONY NOES: COUNCILMEMBERS: NONE ABSENT: COUNCILMEMBERS: NONE S:\Ordinances\ord1694.ord.wpd 7/30/2002 { r City.Clerk 30