Loading...
HomeMy WebLinkAboutNB02-Building and Safety - '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. () t ')/i(' -'Vrt H'UI ().:-:6{j.(j~""<,, (;ames Robbi ns. Superi ntendent Building and Safety Oepartment JR:mk C'" Y' 0" ., H. =IIII~" '-j}JLif ~ lL 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 C'TY 011 TH.=M~ - 'ft I i I ~ -ii.li-~: ~6."111 LD,ADS ReoF !..DADS RAT ea:>F- t:l ~ ~'F- - o .......,M '. _ o o ~A'O lDAbS 'ELlIIX-('\P ~ 11.'fI.I):OO ~ t ~~... '?l..'r) ~\~t;r ("\'QlJS~ 11'lsm.. ~ \oilS(. (c ,0 ~t= ~~'?Sf ~,~P$ ';,0 PSF \ 4, '" flS-r t:l- ::: lB. 0 fS'F- I ! , , 17~ ~ADS ill.&- $iO..~C3/4' R-'f) B<AMtr Cb( gs) t 0,0 fOP '],'; ~ '2.0 f!;F IA:~ f!>F- Y'1-::: II? ~ NO 1~\.AllON ~ Ml~ 1t4 1-AA~ ... ~ \OI.Il€e .. ... .._..441_.." ...~._..".. r _ -- ---- ~..- -- o o 0 leBO Evaluation Service, Inc. A subsidiary corporation of the International Conference of Building Officials o 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 - PagOls o 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 If'0.'r-- METAl.COUNl ! ':' / / !,' I I ~~~/,' !;~II I 11: I ~J, l' i!. , i : ."\:..,... " I ~:4: / '/J''':' $:'-;::1 I ,: " }/.,t::;-~i ' ','. j. fJ.!--if,; '1 :~~PjJ (~ ~,~ I FOAMED INTO AN .-:...J UPSTAND AROUND ..... PIPE OR FLUE 3/,. .;.- . EJWE o Report No. 4350 1. The tiles are manufactured. identified and installed in accord- ance with this report and the manufacturer's instructions. 2. The installation orthe steel roofing tiles is limited to a roof height of 40 feet maximum above grade in localities which are subjected to maximum basic wind speed!! of 80 miles Exposure B, in ac. cordance with Table No. 23.' of the code. This report is subject to re.examination in one year:. UNOeRl.I\YMENT RAmR STtPPID 0AI.w.lZED IAON APRON FlASHINOAT$IDlSAHOBAClC .....lMRLN' APPAClIClMAtaY.-ONlO _OlD"" """"" 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 ~ o Page 3 of 5 o o o Report No. 4351 75/8" T r J COVER WIDTH : 3S" ---" 25'8" ---". l FIGURE NO.1 r--'''.--j ~ S." 'r TVP -.1 -4~ 37"H~ I.. TYPICAL HAT SECOON FIGURE NO. 2 . Pa9r:?Of 5 o o o 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 . o o o o Page 5 of 5 i 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 .