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Home My WebLink About06-28-08 Building Codes Appeals Board minutes Building Codes Appeals Board Minutes of June 26, 2008 Members Present: Tom Campbell, Ken Schlather, Paul Larson and Ron Holt Members Absent: Terry Bunch John Elfstrom & Bruce Compton (Both Resigned) City StatTPresent: Deputy Building Official Mark Huber Others Present: none 1. CALL TO ORDER Meeting called to order at 6:23 P.M. by Chairman Tom Campbell. 2. CONSIDER APPROVING MINUTES FROM THE JUNE 26, 2008 MEETING Motion to approve the June 26, 2008 minutes, as submitted, was made by Ron Holt. Second by Paul Larson. Motion passed unanimously. 3. REVIEW AND DISCUSS THE 2008 EDITION OF NATIONAL ELECTRICAL CODE Following the Board's discussion, Mr. Holt made a motion to close the review on the 2008 National Electrical Code. Second by Ken Schlather. Motion passed unanimously. 4. ESTABLISH NEXT MEETING DATE, TIME AND TOPICS Mr. Holt made a motion that future board meetings are to be held on a quarterly basis at 6 p.m. unless needed otherwise. Possible meetings to be October 16, 2008 with 2009 meetings to be held in January, April, July and October. Topics to be determined. Second by Mr. Larson. Motion passed unanimously. 5. ADMINISTRATIVE REPORTS Mark Huber provided the Board with a copy of the resignation letters of Bruce Compton and John Elfstrom. The Board was advised that City Council would be appointing new board members. Building Codes Appeals Board Minutes of June 26, 2008 Page 2 of2 6. BOARD COMMENTS Mr. Larson thanked the Board for suggesting the City pay for his attendance to the three- day plan review code training class held in April 2008 in Pasadena, Texas. He felt it was a good class and found the training was very beneficial. 7. ADJOURN A motion to adjourn was made by Mr. Holt with a second by Mr. Schlather. Motion passed unanimously. Meeting adjourned at 7:00 p.m. Respectfully submitted, ~~ Mark Huber Deputy Building Official ADMINISTER OATHS OF OFFICE BUILDING CODES APPEAL BOARD Purpose: To provide a comprehensive review of construction codes and make a recommendation to City Council and to hear and determine appeals from applicants. Term: 3 Year term Meeting Time: On an as needed basis. Eligibility Requirements: They must be a resident or non-resident individuals owning or operating a business within the City of La. Porte. Council will determine competency based on experience and training in matters pertaining to building construction. May not be employed by the City of La. Porte. Members: Initial Term Expires Subsequent Term Expires Position 1 .. Tom CampbelVChairman 8/31/2010 3 year term Position 2 - Terry Bunch/Vice Chairman 8/31/2010 3 year term Position 3 - Paul Larson 8/31/2009 2 year term Position 4 - Ron Holt 8/31/2009 2 year term Position 5 - Ken Schlather 8/31/2008 1 year term Position 6 - Michael Reedy 8/31/2008 1 year term Position 7 - Mark Follis 8/31/2008 1 year term *Initial Board Members shall serve coterminous 3 year terms expiring on August 31, 2007. Thereafter, at the conclusion of the initial 3 year term, board members shall serve as noted above. StafTLiaison: Chief Building Official, Debbie Wilmore **Chairman to be elected by members at the first meeting and replaced as needed. 29 MINUTES Building Codes Appeals Board Minutes of June 26, 2008 Members Present: Tom Campbell, Ken Schlather, Paul Larson and Ron Holt Members Absent: Terry Bunch John Elfstrom & Bruce Compton (Both Resigned) City Staff Present: Deputy Building Official Mark Huber Others Present: none 1. CALL TO ORDER Meeting called to order at 6:23 P.M by Chairman Tom Campbell. 2. CONSIDER APPROVING MINUTES FROM THE JUNE 26, 2008 MEETING Motion to approve the June 26, 2008 minutes, as submitted, was made by Ron Holt. Second by Paul Larson. Motion passed unanimously. 3. REVIEW AND DISCUSS THE 2008 EDITION OF NATIONAL ELECTRICAL CODE Following the Board's discussion, Mr. Holt made a motion to close the review on the 2008 National Electrical Code. Second by Ken Schlather. Motion passed unanimously. 4. ESTABLISH NEXT MEETING DATE, TIME AND TOPICS Mr. Holt made a motion that future board meetings are to be held on a quarterly basis at 6 p.m. unless needed otherwise. Possible meetings to be October 16, 2008 with 2009 meetings to be held in January, April, July and October. Topics to be determined. Second by Mr. Larson. Motion passed unanimously. 5. ADMINISTRATIVE REPORTS Mark Huber provided the Board with a copy of the resignation letters of Bruce Compton and John Elfstrom. The Board was advised that City Council would be appointing new board members. Building Codes Appeals Board Minutes of June 26, 2008 Page 2 of2 6. BOARD COMMENTS Mr. Larson thanked the Board for suggesting the City pay for his attendance to the three- day plan review code training class held in April 2008 in Pasadena, Texas. He felt it was a good class and found the training was very beneficial. 7. ADJOURN A motion to adjourn was made by Mr. Holt with a second by Mr. Schlather. Motion passed unanimously. Meeting adjourned at 7:00 p.m. Respectfully submitted, ;md~ Mark Huber Deputy Building Official REVIEW /DISCUSSION ON PROHIBITING USE OF STAPLES FOR INSTALLATION OF ROOFS * 1 Bulk shipments of materials shall be accompanied by the same information issued in the form of a certificate or on a bill oflad- ing by the manufacturer. SECTION R90S REQUIREMENTS FOR ROOF COVERINGS R90S.1 Roof covering application. Roof coverings shall be applied in accordance with the applicable provisions of this I section and the manufacturer's installation instructions. Unless otherwise specified in this section, roof coverings shall be installed to resist the component and cladding loads specified in Table R30 1.2(2), adjusted for height and exposure in accor- dance with Table R30l.2(3). R90S.2 Asphalt shingles. The installation of asphalt shingles shall comply with the provisions of this section. R90S.2.1 Sheathing requirements. Asphalt shingles shall be fastened to solidly sheathed decks. R90S.2.2 Slope. Asphalt shingles shall be used only on roof slopes of two units vertical in 12 units horizontal (2: 12) or greater. For roof slopes from two units vertical in 12 units horizontal (2:12) up to four units vertical in 12 units hori- zontal (4: 12), double underlayment application is required in accordance with Section R905.2.7. R90S.2.3 UnderlaymenL Unless otherwise noted, required underlayment shall conform to ASTM D 226 Type I, ASTM D 4869 Type I, or ASTM D 6757. Self-adhering polymer modified bitumen sheet shall comply with ASTM D 1970. R90S.2.4 Asphalt shingles. Asphalt shingles shall have self-seal strips or be interlocking, and comply with ASTM D 225 or D 3462. I R90S.2.4.1 Wind resistance of asphalt shingles. Asphalt shingles shall be installed in accordance with Sec- tion R905.2.6. Shingles classified using ASTM D 3161 are acceptable for use in wind zones less than 110 mph (49 m/s). Shingles classified using ASTMD 3161, Class F, are acceptable for use in all cases where special fastening is required. R90S.2.S Fasteners. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roof- ing nails, minimum 12 gage [0.105 inch (3 nun)] shank with a minimum 3fs-inch (10 nun) diameter head, ASTMF 1667, of a length to penetrate through the roofing materials and a minimum OP/4 inch (19 nun) into the roof sheathing. Where the r-oof sheathing is less than 3/4 inch (19 nun) thick, the fas- teners shall penetrate through the sheathing. Fasteners shall comply with ASTM F 1667. R90S.2.6 Attachment. Asphalt shingles shall have the min- imum number of fasteners required by the manufacturer. For normal application, asphalt shingles shall be secured to the roof with not less than four fasteners per strip shingle or two fasteners per individual shingle. Where the roof slope exceeds 20 units vertical in 12 units horizontal (167 percent slope), special methods offastening are required. For roofs located where the basic wind speed per Figure R30 1.].( -+) is 2006 INTERNATIONAL RESIDENTiAL CODE@ ROOF ASSEMBLIES ~ 110 mph (49 m/s) or higher, special methods of fastening are required. Special fastening methods shall be tested in accordance with ASTM D 3161, Class F. Asphalt shingle I wrappers shall bear a label indicating compliance with ASTM D 3161, Class F. .. R90S.2.7 Underlayment application.' For roof slopes from two units vertical in 12 units horizontal (17 -percent slope), up to four units vertical in 12 units horizontal (33-percent slope), underlayment shall be two layers applied in the following manner. Apply a 19-inch (483 nun) strip of underlayment felt _ parallel to and starting at the eaves, fastened sufficiently to hold in place. Starting at the eave, apply 36-inch-wide (914 nun) sheets of underlayment, overlapping successive sheets 19 inches (483 nun), and fastened sufficiently to hold in place. Distortions in the underlayment shall not interfere with I the ability of the shingles to seal. For roof slopes of four units vertical in 12 units horizontal (33-percent slope) or greater, underlayment shall be one layer applied in the following manner. Underlayment shall be applied shingle fashion, par- allel to and starting from the eave and lapped 2 inches (51 nun), fastened sufficiently to hold in place. Distortions in the I underlayment shall not interfere with the ability of the shin- gles to seal. End laps shall be offset by 6 feet (1829 nun). R90S.2.7.1 Ice barrier. In areas where there has been a I history of ice forming along the eaves causing a backup of water as designated in Table R30 1.2(1), an ice barrier that consists of a least two layers of underlayment cemented together or of a self-adhering polymer modi- fied bitumen sheet, shall be used in lieu of normal underlayment and extend from the lowest edges of all I roof surfaces to a point at least 24 inches (610 nun) inside the exterior wall line of the building. Exception: Detached accessory structures that con- tain no conditioned floor area. R90S.2.7.2 Underlayment and high wind. Underlay- ment applied in areas subject to high winds [above 110 mph (49 m/s) per Figure R301.2(4)] shall be applied with corrosion-resistant fasteners in accordance with manu- facturer's installation instructions. Fasteners are to be applied along the overlap not farther apart than 36 inches (914 nun) on center. R90S.2.8 Flashing. Flashing for asphalt shingles shall com- ply with this section. R90S.2.8.1 Base and cap flashing. Base and cap flashing shall be installed in accordance with manufacturer's instal- lation instructions. Base flashing shall be of either corro- sion-resistant metal of minimum nominal 0.019-inch (0.5 nun) thickness or mineral surface roll roofing weighing a minimum of 77 pounds per 100 square feet (4 kglm2). Cap flashing shall be corrosion-resistant metal of minimum nominal 0.019-inch (0.5 nun) thickness. R90S.2.8.2 Valleys. Valley linings shall be installed in accordance with the manufacturer's installation instruc- tions before applying shingles. Valley linings of the fol- lowing types shall be permitted: 1. For open valley (valley lining exposed) lined with metal, the valley lining shall be at least 24 inches 291 Roof Sheathing o Spaced lumber sheathing not allowed in SDC D. o Wood structural panels must have grade stamp F41 .0 Spans for first # of grade stamp assume edge support F41 [803.1] [803.2.1] _ [T503.2.1.H1)] sheathing: Roof/Floor 'NER.QA397 PRp.l0B ~--_J , 0 ~ ~ ~ ~. ~. ~. ~ ~ ~ ~. ~ ~ ~ ~ ~ ~ .~ ~ ~ ~ ~ ~. ~. ~ ~ ~ ~ ~ ~ ~ f'l'~~~~'~~~~:;U~~~--~'\) u u u u -~-~-~--U~-U;;~~~~~ , . ':,: - ~:_~9~:f;~:~:nr"~;~~~~~~~~~~~!~.~~,~~~~~l;~' ~~= Roof systems are categorized by their fire rating, class A, S, C, and nonrated. Local or state laws may specify certain minimum ratings, so it is important to check with the local jurisdiction when selecting a roofing or re-roofing system. Other local factors include the need for ice barriers and wind or hi;lil-resistant materials. The IRC provides specific prescriptive rules for roof installations, and more detailed instructions are often specified by the manufacturer or the ASTM standards or the N RCA recommendations. Roof Surfaces-General o Class A, S, or C req'd per local laws or if <3ft of PL [902.1] o Slate, tile & metal considered Class A fire-resistant [902.1] o Fire-retardant treated wood roofs req test agency label each bundle _ [902.2] o Follow approved manufacturer's installation instructions_ [903.1,904.1] o Flashing req'd at all penetrations & intersections [903.2.1] o Penetrations >30in wide in sloped roofs req cricket F46,47, 71 [905.2.8.3]48 o Drains at each low point of roof unless designed to run over edges _ [903.4] o Overflow drains req'd w/ inlet 2in above low point of roof [903.4.1] o Overflow drains not allowed to be connected to roof drain lines _ [903.4.1] o Hail exposure must be determined prior to material selection [903.5] o Roofing materials must bear identification & test agency labels _ [904.4] Asphalt Shingles o Min slope-2:12 (double underlayment if <4:12) -f/I5 0 Fasteners min 3/4in into sheathing (or through if sheathing ~<3j4in) F43 ~ 0 Min 4 fasteners per strip shingle (3ft wide) F42 -=USpecial fastening AMI on steep slopes (>20:12) or in high wind areas [905.2.6] o Ice-dam barrier req'd to 24in horiz inside building exterior wall_ [905.2.7.1]49 o Drip flashing below underlayment, rake flashing above underlayment F45 [905.2.8.1] o Closed valleys req min 36in wide valley lining underlayment_[905.2.B.2] [905.2.2] [905.2.5] [905.2.6] Asphalt Shingle Nail Zone J~ (ID Staples must be n fastened horizontally II r~ ]'" - ~ I~ J If Nails 1in. inset from ends Staples or nails centered between keyline & tar strip 5/16in. . Asphalt shingles ::~~:~t ~::~~: :;~,:,,:;:,::::;.~;~,:~'''~~'''~'?,,"r:, , + _ . . 1/2in. y , \ 1I4in. min.---- ---. ----.---.-- \ . -+- 3/4In. min. Decking ~'"C,=" Underdriven 0 d' Crooked ver riven Clay & Concrete Tile o Clay/concrete tile min slope-211z:12, double underlayment if sA:12 [905.3.: o Double underlayment if slope <4:12 [905.3.3: (Note: Manufacturer's requirements are more stringent, requiring BUR or other membrane systems on roofs below 3: 1 2 slope) o Tile must comply with ASTM standards [905.3.4,! o Tile application AMI & must be appropriate for climate, roof slope, underlayment system & type of tile [905.3.' o Valley flashing min 11 in from center line F44 [905.3.1 (Note: The Tile Roofing Institute publishes installation manuals for cold & snow regions, moderate climate regions & Florida) Cricket flashing ROOF FRAMING TRUSSES ROOFING ROOF ASSEMBLIES AND ROOFTOP STRUCTURES by an approved agency shall be required by the building official to detennine the character, quality and limitations of applica- tion of the materials. 1506.4 Product identification. Roof-covering materials shall be delivered in packages bearing the manufacturer's identify- ing marks and approved testing agency labels required in accordance with Section 1505. Bulk shipments of materials shall be accompanied with the same information issued in the form of a certificate or on a bill oflading by the manufacturer. SECTION 1507 REQUIREMENTS FOR ROOF COVERINGS 1507.1 Scope. Roof coverings shall be applied in accordance with the applicable provisions of this section and the manufac- turer's installation instructions. 1507.2 Asphalt shingles. The installation of asphalt shingles shall comply with the provisions of this section. .. 1507.2.1 Deck requirements. Asphalt shingles shall be fas- tened to solidly sheathed decks. 1507.2.2 Slope. Asphalt shingles shall only be used on roof slopes of two units vertical in 12 units horizontal (17 -per- cent slope) or greater. For roof slopes from two units vertical in 12 units horizontal (17-percent slope) up to four units ver- tical in 12 units horizontal (33-percent slope), double underlayment application is required in accordance with Section 1507.2.8. 1507.2.3 UnderIayment. Unless otherwise noted, required underlayment shall conform to ASTM D 226, Type I, ASTM D 4869, Type I, or ASTM D 6757. 1507.2.4 Self-adhering polymer modified bitumen sheet. Self-adhering polymer modified bitumen sheet shall com- ply with ASTM D 1970. ,."...-, 1507.2.5 Asphalt shingles. Asphalt shingles shall have self-seal strips or be interlocking and comply with ASTM D I 225 or ASTM D 3462. Asphalt shingle packaging shall bear labeling indicating compliance with ASTM D 3161 or a list- ing by an approved testing agency in accordance with the ~ requirements of Section 1609.5.2. {\ 1507.2.6 Fasteners. Fasteners for asphalt shingles shall be galvanized, stainless steel, aluminum or copper roofmg nails, minimum 12 gage [0.105 inch (2.67 mm)] shank with a minimum 0.375 inch-diameter (9.5 mm) head, of a length to penetrate through the roofing materials and a minimum of 0.75 inch (19.1 mm) into the roof sheathing. Where the roof sheathing is less than 0.75 inch (19.1 mm) thick, the nails shall penetrate through the sheathing. Fasteners shall com- ply with ASTM F 1667. 1507.2.7 Attachment. Asphalt shingles shall have the min- imum number of fasteners required by the manufacturer and Section 1504.1. Asphalt shingles shall be secured to the roof with not less than four fasteners per strip shingle or two fas- teners per individual shingle. Where the roof slope exceeds 20 units vertical in 12 units horizontal (166-percent slope), 266 asphalt shingles shall be installed in accordance with the manufacturer's printed installation instructions for I steep-slope roof applications. 1507.2.8 Underlayment application. For roof slopes from two units vertical in 12 units horizontal (17-percent slope) and up to four units vertical in 12 units horizontal (33-per- cent slope), underlayment shall be two layers applied in the following manner. Apply a minimum 19-inch-wide (483 mm) strip of underlayment felt parallel with and starting at the eaves, fastened sufficiently to hold in place. Starting at the eave, apply 36-inch-wide (914 mm) sheets of underlayment overlapping successive sheets 19 inches (483 mm), by fastened sufficiently to hold in place. Distortions in the underlayment shall not interfere with the ability of the shingles to seal. For roof slopes of four units vertical in 12 units horizontal (33-percent slope) or greater, underlayment shall be one layer applied in the following manner. Underlayment shall be applied shingle fashion, parallel to and starting from the eave and lapped 2 inches (51 mm), fas- tened sufficiently to hold in place. Distortions in the underlayment shall not interfere with the ability of the shin- gles to seal. 1507.2.8.1 High wind attachment. Underlayment applied in areas subject to high winds (greater than 110 mph in accordance with Figure 1609) shall be applied with corrosion- resistant fasteners in accordance with the manufacturer's instructions. Fasteners are to be applied along the overlap at a maximum spacing of 36 inches (914 mm) on center. 1507.2.8.2 Ice dam membrane. In areas where there has I been a history of ice fonning along the eaves causing a backup of water, a membrane that consists of at least two layers of underlayment cemented together or of a self-adhering polymer modified bitumen sheet shall be used in lieu of normal underlayment and extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building. Exception: Detached accessory structures that con- tain no conditioned floor area. 1507.2.9 Flashings. Flashing for asphalt shingles shall comply with this section. Flashing shall be applied in accor- dance with this section and the asphalt shingle manufac- turer's printed instructions. 1507.2.9.1 Base and cap flashing. Base and cap flash- ing shall be installed in accordance with the manufac- turer's instructions. Base flashing shall be of either corrosion-resistant metal of minimum nominal 0.019-inch (0.483 mm) thickness or mineral-surfaced roll roofing weighing a minimum of 77 pounds per 100 square feet (3.76 kg/m2). Cap flashing shall be corro- sion-resistant metal of minimum nominal 0.019-inch (0.483 mm) thickness. 1507.2.9.2 Valleys. Valley linings shall be installed in accordance with the manufacturer's instructions before 2006 INTERNATIONAL BUilDING CODe8