HomeMy WebLinkAbout42-Building and Safety
, ~W~ OF SAN BERNARQNO - REQ~ST FOR COUNCIL A~ION
STAFF REPORT
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BUILDING AND SAFETY DEPARTMENT
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 substantial
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 City 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 would be considered, on an
individual basis, where successfully tested for 100 miles-per-hour
wind forces.
~espectfully submitted,
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/John E. Tucker, Director
/ Building and Safety Department
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75-0264
71-2.
TO:
RaymondD. Schweitzer, City Administrator
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INTEROFFICE MEMORANDUM
8706-1105
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
infilland 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.
-C:'. INTEROFFICE MEMORANDUMC) 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.
me if further information or clarification is
evelopment
KJH/lab
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CITY OF SAN BEFOJARDINO 0- MEMORANDU~
To RAYMOND D. SCHWEITZER
CITY ADMINISTRATOR
Subject REOUIREMENT OF TILE ROOFS AND
USE OF HURRICANE CLIPS IN THE
ENTIRE CITY OF SAN BERNARDINO
From
GERALD M. NEWCOMBE
FIRE CHIEF
JUNE 23, 1987
Date
Approved
Date
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The requirement of tile roofs in the entire City certainly
has value from a fire protection point of view. However,
there are other types of roofs that are less expensive and
are fire resistive.
I am not aware of any major wind damage occurring to roofs
or other parts of a structure in the City except along the
foothills. I assume that this happens because there is
nothing to deflect the wind away from the structures in
the north portion of the City, while those buildings further
south are somewhat protected.
While I would like to see fireproof roofing material, such
as ti Ie, used throughout the City, I don't think it would
be practical because of the initial cost. But, the
requirement of tile roofs in the brush interface for both
fire and wind protection would be a benefit to the City
and the property owner.
I recommend that the area requiring the tile
same as the high fire hazard areas, which
any wood roof covering in that portion of
delineated in Municipal Code 8.63.130.
roofs be the
now prohibits
the City, as
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