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'CITY OF SAN BE~ARDINO 0- MEMORANDUIO
To Board of 8ui1ding Commissioners
From James RObbins,Superintendent
Building and Safety
Date July 30, 1986
Subject Til e Roof at 111 E. Hospita 1 ity Lane
(Information Only)
Approved
Date
A correction notice was issued Monday, July 28, to remove the roofing tile
being installed at the above address, and to replace it with tile approved
by ICBO, or provide the ICBO certification number of the tile being used.
The Uniform Building Code requires roofing materials to have ICBO approval.
I am upholding the issuance of that correction notice and the building will
not receive a final inspection until this is corrected.
I am providing this information because the owner is requesting the posting
of a cash deposit to allow final inspection and occupancy. The cash deposit
would be equal to twice the cost of replacing the roof, the replacement being
necessary if the tile (on the roof) does not pass ICBO testing. The additional
factors involved include an agreement relieving the city of all responsibility
for (1) any problem created by or related to the installation of the tile
(2) any loss of income as a result of failure of the tile or as a result of
having to cause a reroof of the building. Another factor is the potential of
other contractors using unapproved materials and requesting a similar dispen-
sation.
In the event my action is appealed to you, you will have two options, (1) uphold
my position; or (2) recommend to the Mayor and Common Council that they consider
accepting a cash deposit and authorizing entering into agreement regarding the
time for approval and assignment of liability. The City Attorney would have to
address the ability to totally absolve the c~ty of any liability.
If YO~ uphold my position, you should advise the applicant of the right to appeal
to the Mayor and Common Council.
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-'Vrt H'UI ().:-:6{j.(j~""<,,
(;ames Robbi ns. Superi ntendent
Building and Safety Oepartment
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CCITY OF SAN BEhNARDINO 0- MEMORANDUQ
To JAMES E. ROBBINS, SUPERINTENDENT
DEPARTMENT OF BUILDING & SAFETY
Subject LOTUS RESTAURANT /111 HOSPITALITY LANE
From CHARLES p, DUNHAM, C, E.
PLAN CHECK ENGINEER
Date AUGUST 1, 1986
Approved
Date
The weight of the clay tile used on the mansard roof is comparable to
the ICBO approved tiles listed below. The Architectural Engineer,
Willi Wu, C.E. 37426, used 10 pounds per square feet in his calculation,
therefore, the weight of the clay tile agrees with his calculations and
is not overloading the mansard roof.
The engineer used 15 pounds per square feet for the total load as shown
in his calculation which shows a 5% safety factor add on.
1. Deleo clay tile 9.5 1b per sq ft installed Japanese style glazed.
2. U.S. tile, shingle clay tile 10.0 1b per sq ft installed.
3. Suncrete concrete roof tile 9.5 1b per sq ft installed.
/~~
Charles P. Dunham, C.E.
Plan Check Engineer
attachment
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leBO Evaluation Service, Inc.
A subsidiary corporation of the International Conference of Building Officials
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EVALUATION REPORT
Report No. 4351
May. 1986
Filing Category: ROOF COVERING AND ROOF DECK CONSTRUCTION-Roof Covering
DIPLOMAT STEEL ROOFING TILES
GAVLE VERKEN AB
POST OFFICE BOX 967
S-80133 GAVLE, SWEDEN
BRUSAN CORPORATION
7S EAST SANTA ANITA
BURBANK. CAUFORNIA 91S01
I. SUbject: Diplomat Steel Roofing Tiles,
II, Description: A, GeaenJ: Diplomat Steel Roofing Tiles are press.
formed from commercial quality mild steel in accordance with ASTM A
446 Grade C and have a 1.25 commercial coating class (POt yield) of zinc in
acconlance with Section 32,413 of U,B,C, Standard No, 32-4, The base
metal thickness is O.0179-inch. No. 26 gauge. and the minimum yield
strenglh is 40.000 psi. The ellposed galvanized surface is coated with a
pllyvinylduofluoride coating system. and the unexposed galvanized SUf-
face is coated with an ac:rylic lacquer. The overall size of each tile is
approximately 41 inches wide side to side and 12 feet deep front to back,
The flute topS are spaced 7'18 illchcson center, and the vertical distance from
the bottom to the top of the flute is 2'1. inch, See Figure No, I, End and side
laps of adjacent rile panelsa..re 3112 inches and 21/2 inches. respectively. The
tile weight is approximately 1 pound per square foot.
a, Roof Slope: The Diplomat Steel Roofing Tiles may be installed on
roof slopes of 3:12 minimum. Where the roof slope is less than 3:12. the
tiles may be used as a decorative roof covering only and must be insmlled
over an approved roof covering complying whh the code. subject to ap-
proval by the building official.
C. Battens and COWIterbalteas: Battens are 11f:1:.inch No. 26 gauge
galvanized steel hat section as ncxed in Figure No.2. The tile banens are
spaced 153/" inches on center and secured to the framing members or
countetbattens with screw fasteners as described in Paragraph 11 F. End
joints between battens are separaced If! inch every 4 feel. or 1/4-inch by 11/4
inch by 2-inch redwood shima may be placed under the battens at 24 inches
on center to facilitate water drainage. Where tiles arc installed over existing
roof covering. I by 4 nominal Douglu tir.larch No.2 or bettercounterbat-
tens are attached directly over framing members spaced . maximum of 24
inches on center.
D. Underlay-meat: An underlayment is always required and must consist
of one of the following:
I, ClaM A FI.....retardant: Conglass No, 40 asphaJt-imptegnated
fiberglass roofing felt with a 2~inch headlap.
2, ClaM B Flre-retardaal: Pmnaglass No, 28 asphaJt.impn:gnated
fiberglass roofing felt with a 2.inch headlap,
In areas subject to ice and snow buildup. blowing dust or sand. or
where extreme high wind-rain conditions occur. installation must comply
with Section 3203 (d) 3 of the Uniform Building Code,
E. Flashing: Valley flashing must be minimum No. 28 gauge corrosion-
resistant metal extending at least 8 inches from the valley centerline each
way and must have splash diverter rib not less than 3/4 inch high at the flow
line formed as pan of the flashing. Aashing must have an end lap of not less
than 4 inches.
F. Fastener Requinments: 1. Roofiq TIles: No. 10 stainless steel self-
drilling steel screws with 91l6-inch diameter neoprene washers. spaced as
indicated in Figure No.3.
2. Galvanized Steel rue Battens: Two No. 10 galvanized steel metal
screws or two 16.penny common nails al each galvanized steel hat section to
framing members or counterbanens.
3. One-by.four Douglas Fir.larch No.2 or Better Counterbattens:
No. 10 galvanized steel wood screws spaced a( 12 inches on center or 16-
penny common nails spaced at 32 inches on center.
Screws must be of sufficient length to penetrate through the roof sheath-
ing or a minimum of 3/4 inch into the st,ructural framing whichever is less.
Nails. where required. must be of sufficient length to penetrate a minimum
of2 inches into the structural framing.
G, laatdatlon: I, New Construction: a, C.... A Roof A......bly: The
tiles must be installed over II2~lnch plywood or solid sheathing complying
with the code, Conglass No, 40 asphaJt.imptegnated fiberglass roofing felt
is then inMalled with a 2-inch h9dlap overthe entire roof deck. TIle battens
are fastened to framing members at a maximum 24 inches on center with
fasteners as described in l'araJraph II F. All full-size tile panels are fastened
in place on the roof prior to cutting tiles and tile placement at hips, ridges or
valleys. Wood ridges and hips must have a minimum 2.inch nominal
thickness. Tiles are fastened. to the side of the ridge and hips after mitering.
cutting or bending and then capped with the appropriate trim finished as the
regular rile, The Diplomat Steel Roofing Tiles are then installed using steel
screw f~ as described in l'araJraph II F. Sec Figure No, 4,
bO. C.... 8 Root Assembly: The tiles and battens are fastened and
installed in the same manner as described in Paragraph II G I (a). except
Plmnaglass No, 28 asphall.imptegnated fibergiass roofing felt is installed
with a 2-inc:h headlap over the entire roof deck prior to application of the
steel battens,
2. Reroof1na Application: When the existing roof covering is com-
pletely removed. all conditions noted in Paragraphs II A through II G I must
apply. 1be existing sU'UctuJ'e must be inspected as set forth in Chapter 32 of
the 1995 Uniform Building Code Appendix,
Diplomat Steel Roofing Tiles may also be installed over existing wood
shake. wood shingle or asphalt shingle roofs. provided the roof slope
complies with ~ II B. The existing structure must be inspected as
set forth in AppendIX Chapter 32 of the code,
New flashing must be installed over and around all existing valleys. vents
and chimneys in accordance with the code. Details for reroofing installation
not covered in this section are to be treated as those for installation proce.
dures for new colllll'llClion as set forth in ParagrapllII Q,
a. In".II.'o.- 0..... ExloltaI Wood S....... or ShlqIeo-ClaM a
Roof Assembly: The tiles may be installed over existing untreated. wood
shakes or shingles on minimum 3: 12 roof slopes. One~by-four Douglas fir-
larch No, 2 or beltercounterbattens are installed longitudinally on top of the
existing wood shingles or shakes and aligned over the rafters below, Coun.
terbattens are fastened with screw fasteners as described in Paragraph II F.
An underlayment of Pennaglass No, 28 uphalt.impregnated fiberglass
roofing felt is then installed over the I by 4 counterbattens with a 2.inch
headlap. No. 26 gauae galvanized steel hat sections as indicated in Figure
No.2. are installed horizontally over the underlayment and counterbattens
at 1~P/4 inches on center and fastened with screw fasteners as described in
Paragraph II F. The Diplomat Steel Roofing Tiles are then secured to th,
battens with screw fasten~as described in Paragraph II F. See Figure
No,S,
b, _Over ExlaliDKAspIuoItShlngle5-CIaMB Roof Assem-
bly: The tiles may be installed over existing asphalt shingles on minimum
3: 12 roof slopes. An underlayment of Permaglass No. 28 asphalt-
impregnated fiberglass roofing felt is installed on top of the eXlsting asphalt
shingles. No. 26 gauge galvanized steel hat sections as indicated in Figure
No.2 are installed horizontally over the underlayment and fastened with
fasteners as described in Paragraph II F. The Diplomat Steel Roofing liles
are then secured to the battens with screw fasteners as described in Para.
graph II F. See Figure No, 6,
EWlllUIlion "PO'" of lCBO E...I_n Sullie<, Inc.. an issu.d sol.ly to ,nnii/6 inlOl'lIaIlion to Class A _MIS oIICBO, _II tho cod< "fHH'
wlticlt ,It~ nport is /Hutd. EvabuItiIm npons d1't not to be COIIJtrutd lIS npnullli1l, anllleticJ or., otlleratll'iblll,S IIOt JP<<i/"reall, tJIIdnJHflJUJrIU
GII ,ruIo",..,nt or nco",...IIdGIiOll for us, of tIr, Jubject nport.
This ..port is /Hued upon i"'".nlk'" rests orotlter rechnieal dato s""mitred by tho app/ktutt. The lCBO EwrllUIlion Seme..lnc.. ruhnieal strsffluu
~<<i tit, kst nJlllu lltuJ/or otIwr dtuiJ. but dOls nol poSSISS test faciJitia,.,."... 1111 ilUlqelldellt vetiflClIliDII. Then is 110 WGtnIIIty by lCBO
Eval.lUJtion S,mc,. Inc., exprtu or implied. aJ to all' "Finding" 0" otItn JfUltUr ill ,lte report or as to till, prodllct co"e1Wl by th, nport. This
disclaim,r includes. but is not limited to, merchtmtllbilily.
Pig. 1 ofS
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PagOls
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H. Identification: A tal!: conraininll the manufacturer\ name. address
and product name is affixed to each pailer.
UI. Evidence Submitted: Fire-retardant rooftesIs. descriptive brochure
and installation instruction are submitted.
Findings
IV. Findings: That the Diplomat Steel Roofing TIles comply with the
1985 Uniform Building Code as fire-retardant roofing assemblies.
subject to the following conditions:
TILE BATTENS
NOTI: IN ALL CASES GUTTER
MATEFllALlSlO BE 21 GAUGE
GAl\ANlZED IAOH FOAMED AS SHOWN.
FASCIA BOARD-
VAUEY
Fl.ASHlNOlOEXTENO
T UNDER UPPf:P1 TILES
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METAl.COUNl ! ':' / / !,' I I
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FOAMED INTO AN .-:...J
UPSTAND AROUND
.....
PIPE OR FLUE
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Report No. 4350
1. The tiles are manufactured. identified and installed in accord-
ance with this report and the manufacturer's instructions.
2. The installation orthe steel roofing tiles is limited to a roof height
of 40 feet maximum above grade in localities which are subjected
to maximum basic wind speed!! of 80 miles Exposure B, in ac.
cordance with Table No. 23.' of the code.
This report is subject to re.examination in one year:.
UNOeRl.I\YMENT
RAmR
STtPPID 0AI.w.lZED IAON APRON
FlASHINOAT$IDlSAHOBAClC
.....lMRLN'
APPAClIClMAtaY.-ONlO
_OlD""
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lEAD FlASHING AT FRONT OF CHIMNEY
WEDGED 1Nlt) BAICKWORKJOINT AND
~. __ l!O UNDEFlLOWENOOFSOo\K!Fl
DRESSED CMER 9UfIIFACE OF LoweR TIlES
CHIMNEY
"1'&"
TYPICAL FLASHING DETAILS
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Page 3 of 5
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Report No. 4351
75/8"
T r
J
COVER WIDTH : 3S"
---"
25'8"
---".
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FIGURE NO.1
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S." 'r
TVP -.1
-4~
37"H~
I..
TYPICAL HAT SECOON
FIGURE NO. 2
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Pa9r:?Of 5
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Report No. 4351
.
AT NOCK-ONE SCREW
IN EVERY OTHER
PROFILE BOTTOM
3RD (ETC) BATTEN UP-
. .....-- TWOSCREWS
I-" 2ND BATTEN UP-
C-' ONE SCREW
.
.
1 ST BATTEN UP-
, TWO SCREWS
t
SIDE OVERLAP H
EAIIES BATTEN AND SHEET
ENDOVER~NESCREW
IN EVERY PROFILE BOTTOM
. . . . .
SCREW FASTENER LOCATION FOR
THE DIPLOMAT STEEL ROOFING TILE
FIGURE NO.3
HAT SECTION
PLYWOOD
UNDERLAYMENT
APPLICATION OF THE DIPLOMAT STEEL ROOFING
TILE OVER NEW CONSTRUCTION
FIGURE NO.4
.
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Page 5 of 5
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Report No. 4351
PURLIN OF GALIANIZED STEEL SHEET
COUNTERBATTEN , BY 4
E~:lSTING ROOFING MATERIAL TYPE CEDAR
SHIN(:LES OR SHAKES
APPLICATION OF THE DIPLOMAT STEEL ROOFING
TILE OVER EXISTING WOOD SHAKES OR SHINGLES-
CLASS B ROOF ASSEMBLY
FIGURE NO. 5
REQUIRED
UNOERl.AYME~
TYPE 28 ASPHALT-IMPAEGNATED
FIBERGLASS BASE SHEET
ASPHALT SHINGLES
(EXISTING)
PLYWOOD
SHEATHING
APPLICATION OF THE DIPLOMAT STEEL ROOFING
TILE OVER EXISTING ASPHALT SHINGLES-
CLASS B ROOF ASSEMBLY
FIGURE NO. 6
.