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HomeMy WebLinkAbout35a-Building and Safety cffy OF SAN BERNAR~NO - REQ~ST FOR COUNCIL A~ION STAFF REPORT BUILDING AND SAFETY DEPARTMENT pi/? Subject: Expanding the High Wind Area Requirements Throughout The Ci ty This proposal under consideration is to expand the high wind area requirements (tile roofing) to all areas of the City. The justification for this action is that insufficient data is available to identify the "high wind" areas of the City due to insufficient wind recording devices. We, never-the-less, have experienced substantiai wind damage to roofs in the past in various locations in the City. This proposal would create "blanket coverage" of the City and would be easier to enforce than "spot coverage." This proposal encompases these features: 1. This would apply only to new construction on roofs with pitches over 3" in 12". 2. Re-roofs throughout the Ci ty would be as currently enforced in the areas north of Highland and the cross-town freeway. (300# asphalt, self-tabbing shingles would be permitted.) 3. Tile roofs would require hurricane clips where available for the product. 4. Other roofing material for new roofs wouid be considered, on an individuai basis, where successfully tested for 100 miles-per-hour wind forces. ~espectfully submitted, / , ! '- ;~j =- /~-< - ~-- /JOhn E. Tucker, Oirector / Building and Safety Oepartment f JET /l k 75.0264 J"t::;_\ c o 0 C I T Y 0 F SAN B ERN A R DIN 0 INTEROFFICE MEMORANDUM 8706-1105 1'~ (I, -c<b l) 0/ ., n h Of.? '0 1- ~ .,., 'n 11- C': J .0 -.., "~PY ~, r"'n' .2 ' ........ . L~.-" t/' :) ! TO: Raymond D. Schweitzer, City Administrator FROM: Kenneth J. Development Henderson, Director of Community SUBJECT: IMPACT OF CITY-WIDE IMPLEMENTATION OF HIGH WIND ROOFING REQUIREMENTS ON INFILL AND HOUSING REHABILITATION PROGRAMS DATE: June 9, 1987 (7100) COPIES: Deputy city Administrator - Development; Director of Building and Safety; Rehabilitation Coordinator; Housing Development Specialist; File ------------------------------------------------------------- This memorandum has been developed in anticipation of the Mayor and Common Council conducting a public hearing on June 15, 1987 in connection with the possible City-wide implemen- tation of extraordinary roofing requirements resulting from damages caused by high wind conditions. The proposed changes to the Municipal Code would require concrete or clay roofing materials to be used, along with hurricane clips, where available, in designated high wind areas of the City. My comments relate to the potential impact on the department's infill and housing rehabilitation programs. In November, 1985, the Mayor and Common Council adopted the Infill Housing Program as a part of the City competing for state designation under Enterprise Zone legislation. Briefly, the program provides incentives to selected developers willing to construct and sell single-family dwelling units on properly zoned vacant lots in the Enterprise Zone. Current plans are to sell the homes from $55,000 to $70,000, depending on various amenities and overall square footage. At present, five (5) homes have been built and sold, with construction scheduled to commence on an additional eighteen (18) homes within two (2) to three (3) weeks. If the new roofing requirements were implemented on a City- wide basis, the infill program would realize a significant financial impact. Assuming a 1,200 square foot home, a 500 square foot garage, a conventional 4:12 pitch roof and a price differential of $115.00 per square between fiber- glass/composition shingle and concrete/clay tile (1 square equals 100 square feet), the difference in price per home would be $3,000.00. This represents a substantial increase when the proposed sales prices are taken into account. ~K~ COO J INTEROFFICE MEMORANDUM: 8706-1105 IMPACT OF CITY-WIDE IMPLEMENTATION OF HIGH WIND ROOFING REQUIREMENTS ON INFILL AND HOUSING REHABILITATION PROGRAMS June 9, 1987 Page 2 With respect to our housing rehabilitation program, the City has had such a program for eleven (11) years. All rehabilitation activities are done in accordance with the Uniform Building Code and applicable provisions of the Municipal Code. Any household receiving financial assistance must be at or below eighty percent (80%) of the median income level for the Standard Metropolitan statistical Area (SMSA), or $23,050 for a family of four (4). The applicant must then be able to demonstrate the capacity to repay the loan over a specified period of time, along with meeting all other program requirements and loan underwriting criteria. If, during the course of developing the scope of work for rehabilitation, concrete/clay tile roof is required, the additional cost could negatively impact the homeowners ability to afford the loan, and would impact the loan-to value ratio and other loan underwriting standards. Additionally, for homes originally constructed with fiberglass/composition shingle, requiring a heavier concrete/clay tile roof would necessitate other costly structural changes in order for the home to support the heavier roof. Based upon the foregoing, I would recommend to the Mayor and Common Council that the infill and housing rehabilitation programs administered by the Community Development Department be specifically exempted from additional roofing requirements presently being considered. Historically, the areas where we have focused our activities have not been damaged by high winds. Unless and until, data becomes available, these programs should not be required to meet the additional measures being considered. Any decision taken with respect to our program on Monday could be reviewed periodically. Please call me if further information or clarification is required. evelopment KJH/lab . c 10 1~ o J :) 1 2 3 ORDINANCE NO. ORDINANCE OF THE CITY OF SAN BERNARDINO AMENDING SECTION 15.04.095 OF THE SAN BERNARDINO MUNICIPAL CODE CONCERNING THE REQUIREMENT FOR ROOFING IN HIGH WIND AREAS. 4 THE MAYOR AND COMMON COUNCIL OF THE CITY OF SAN BERNARDINO DO ORDAIN AS FOLLOWS: 5 6 SECTION 1. Section 15.04.095 of the San Bernardino Municipal 7 Code is amended to read: 8 9 "15.04.095 UBC Section 1704 amended - Roof coverings. UBC Section 1704 is amended to read as follows: Section 1704. Roof Coverings. (a) Roof coverings shall be fire retardant, with the 12 following exceptions: 13 1. Ordinary roof covering may be installed on buildio~s 14 of Group R and Group M occupancies except that wood roof covering 15 shall have a minimum of a Class C rating for these occupancies. 16 2. In the high fire hazard area as defined in Section 17 8.63.130 of the San Bernardino Municipal Code, no new wood roof 18 covering shall be installed, except for repairs to wood roofs not 19 exceedin~ twenty-five percent of the existing roof area. Such 20 repairs shall be with materials with minimum Class C rating for 21 Group R and Group M Occupancies and Class B for all other 22 occupancies. 23 Skylights shall be constructed as required in Chapter 34. 24 Penthouses shall be constructed as required in Chapter 36. For use of plastics in roofs, see Chapter 52. For Attics: Access and Area, see Section 3205. For Roof Drainage, see Section 3207. 3. The provisions of Section 3202 (b) of the Un iform 25, 26 27 28 4/3/87 ff. . c o ~ o 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 ~ 23 24 25 26 27 28 Building Code shall not apply to the City of San Bernardino. (b) Roof coverings in high wind areas shall be as follows: 1. Roof coverings for new residential construction within an area of the City as defined in this section shall meet the following requirements: Concrete or clay tile roof coverings installed in accordance with UBC Chapter 32 and with the use of hurricane clips where available from manufacturer. 2. The geographic area shall be those areas within the municipal boundaries of the City described as follows: Lying northerly and westerly of the following described line: Beginning at the intersection of the northerly prolongation of the centerline of Mt. View Avenue with the corporate limits line of the City of San Bernardino; thence southerly along said prolongation, and said centerline, to its intersection with the centerline of 40th Street; thence westerly along the centerline of 40th Street, to its intersection with the centerline of "H" Street; thence southerly along the centerline of "H" Street, and its southerly prolongation, to its intersection with the westerly prolongation of the centerline of parkdale Drive; then westerly along said westerly prolongation of parkdale Drive, to its intersection with the centerline of State Highway 215; thence northwesterly along the centerline of said State Highway 215, to the corporate limits of San Bernardino." SECTION 2. Aoolicability of Ordinance. The Uniform 5-29-87 2 C 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 o J """\ ...... Building Code, Section 1704 Subsection (b) relating to roof coverings for new residential construction in high wind areas, shall not apply to projects for which plans have been approved by the City Development Review Committee (DRC) or to projects (Which do not require DRC approval), for which building plans have been filed with and approved by the city Plan Checker. I HEREBY CERTIFY that the foregoing ordinance was duly adopted by the Mayor and Common Council of the City of San Bernardino at a meeting thereof, held on the day of , 1987, by the following vote, to wit: AYES: Council Members NAYS: ABSENT: city Clerk The foregoing ordinance is hereby approved this day of , 1987. Mayor of the City of San Bernardino Approved as to form: /~~~ city A orney 4/3/87 -3- c o ._:) ~. . . c ~ :1 , . " L ) r-'-"--' C- rJ I . lLI I.~. ~ J r ! . l T( o .. . 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