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Home My WebLink AboutO-2006-2079-I ,...- .- REQUEST FOR CITY COUNCIL AGENDA ITEM ~ Approoriation Agenda Date Requested: 04/24105 Requested By: D. Wilmore c;J~ Source of Funds: N/A Department: Planning Account Number: Report: X Resolution: Ordinance: X Amount Budgeted: Amount Requested: Exhibits: Recommendation Memo from Board Budgeted Item: YES NO Exhibits: Code Commentary, Connector Information & Poll Exhibits: Ordinance #96-2079-1 SUMMARY & RECOMMENDATION At the April 10, 2006 City Council meeting staff was directed to prepare an ordinance to implement a local amendment to address boring/notching of studs (both exterior and interior walls) for residential and non-residential structures. As directed by Council, staff has prepared Ordinance #96-2079-1 which adopts amendments as recommended by the Building Codes Appeals Board (BCAB). For your convenience, we have included the BCAB memo and backup originally provided at the April 10, 2006 meeting along with Ordinance #96-2079-1. The ordinance language establishes a local city amendment to require a minimum 6" stud walls where drain, waste & vent (DWV - Horizontal and/or Vertical) plumbing is installed. The use of 2X6 studs (wood or metal) shall be required for new construction and additions (addition of square footage) for both residential and non-residential construction where DWV plumbing is installed In accordance with past practices, the ordinance has a 60-day implementation period (effective June 24,2006) to allow mail notification to building contractors as well as counter handouts for the public. Action Required bv Council: Consider approval of Ordinance #96-2079-1. 0-fi --O~ Date ORDINANCE NO. 96-2079-1 AN ORDINANCE AMENDING CHAPTER 82 OF THE CODE OF ORDINANCES OF THE CITY OF LA PORTE BY AMENDING CHAPTER 82 "BUILDINGS AND BUILDING REGULATIONS," ARTICLE II "BUILDING CODES", TO ADD A NEW SECTION 82-37 "MINIMUM SIZE STun WALLS WHERE DRAIN, WASTE, AND/OR VENT PLUMBING IS INSTALLED" AND TO AMEND SECTIONS 82-37-82-65 "RESERVED"; PROVIDING A REPEALING CLAUSE; CONTAINING A SAVINGS CLAUSE; FINDING COMPLIANCE WITH THE OPEN MEETINGS LAW; PROVIDING A SEVERABILITY CLAUSE; PROVIDING THAT ANY PERSON VIOLATING THE TERMS OF THIS ORDINANCE SHALL BE DEEMED GUILTY OF A MISDEMEANOR AND UPON CONVICTION SHALL BE FINED IN A SUM NOT TO EXCEED TWO THOUSAND DOLLARS; PROVIDING FOR THE PUBLICATION OF THE CAPTION HEREOF; AND PROVIDING AN EFFECTIVE DATE HEREOF. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF LA PORTE, TEXAS: Section 1. New Section 82-37 is hereby added to the City of La Porte Code of Ordinances Chapter 82 "Buildings and Building Regulations", Article II, "Building Codes", and shall hereinafter read as follows, to-wit: "Section 82-37. Minimum size stud walls where Drain, Waste and/or Vent plumbing is installed. Minimum six-inch (6") stud walls shall be required where drain, waste & vent (DWV - Horizontal and/or Vertical) plumbing is installed. The use of 2X6 studs (wood or metal) shall be required for new construction and additions (addition of square footage) for both residential and non-residential construction where DWV plumbing is installed." Section 2. Sections 82-37-82-65, "Reserved", of City of La Porte Code of Ordinances Chapter 82 "Buildings and Building Regulations", Article II, "Building Codes", is hereby amended and shall hereafter read as follows, to-wit. "Section 82-38-82-65. Reserved". Section 3. All ordinances or parts of ordinances inconsistent with the terms of this ordinance are hereby repealed; provided, however, that such repeal shall be only to the extent of such inconsistency and in all other respects this ordinance shall be cumulative of other ordinances regulating and governing the subject matter covered by this ordinance. Section 4. If any section, sentence, phrase, clause, or any part of any section, sentence, phrase, or clause, of this Ordinance shall, for any reason, be held invalid, such invalidity shall not affect the remaining portions of this Ordinance, and it is hereby declared to the intention of this City Council to have passed each section, sentence, phrase, or clause, or part thereof, irrespective of the fact that any other section, sentence, phrase, or clause, or part thereof, may be declared invalid. Section 5. Any person, as the term "person" is defined in Section 1.07 (27), Texas Penal Code, who shall violate any provision of the ordinance, shall be deemed guilty of a misdemeanor and upon conviction shall be punished by a fine not to exceed TWO THOUSAND DOLLARS ($2,000.00). Section 6. This Ordinance shall be effective sixty (60) days after its passage and approval. The City Secretary shall give notice of the passage of this ordinance by causing the caption hereof to be published in the official newspaper of the City of La Porte at least twice within ten (10) days after the passage of this ordinance. Section 7. The City Council officially finds, determines, recites and declares that a sufficient written notice of the date, hour, place and subject ofthis meeting ofthe City Council is posted at a place convenient to the public at the City Hall of the city for the time required by law preceding this meeting, as required by the Chapter 551, Texas Government Code; and that this meeting has been open to the public as required by law at all times during which this ordinance and the subject matter thereof has been discussed, considered and formally acted upon. The City Council further ratifies, approves and confirms such written notice and the contents and posting thereof. PASSED AND APPROVED this the t).1f- day of ~_ ,2006. CITY~.F. LA POR~~ By: ~~->.. \~ Mayor ATTEST: ~di:/kL~ City Secretary AP~ ~ -r ~4~/j City Attorney 2 I' Memo To: Honorable Mayor and City Council Tom Campbell~irman ofthe Building Codes Appeal Board Building Codes Appeals Board Members; Debbie S. Wilmore, Chief Building Official; Wayne Sabo, Director of Planning; Debra B. Feazelle, City Manager; John E. Joerns, Assistant City Manager; Cynthia Alexander, Assistant City Manager 3/29/2006 Local Amendment to the Building Codes From: CC: Date: Re: In November 2005, the Board began discussion regarding a possible local residential and commercial building codes amendment to require minimum 6" stud walls where drain, waste & vent (DWV - Horizontal and/or Vertical) plumbing is installed. As Board Chairman and a state licensed master plumber, I recognized the need for change and suggested the local amendment. My concern is boring/notching of studs to accommodate plumbing work (see sketch attached). We discussed this subject at four (4) meetings and although a poll of surrounding cities (see attached list) did not reveal this type amendment in other cities, the Board developed a recommendation for Council's consideration. It is as follows: Amend the 2003 Ed. of the International Residential Code (IRe) and International Building Code (IBe) to require minimum 6" stud walls where drain, waste & vent (D WV - Horizontal and/or Vertical) plumbing is installed. To accommodate some Board concerns that the regulations would be too restrictive on existing buildings, we are providing the following language for clarification. The use oi2X6 studs (wood or metal) shall be required for new construction and additions (addition of square footage) fOr both residential and non-residential construction where DWV olumbing is installed. The Board recommends Council support the amendment as outlined in this memo and direct staff to prepare an ordinance with a 60-day implementation period. This delay would allow mail notification to building contractors as well as counter handouts for the public. As Chairman, I plan to attend the Council meeting and be available for questions. FIGURE R602.6(1) - R602.7 :i ;;1 ~:~ ! ~i ~II :'1 ,:i 11 .;j ~i 51 U 'I il :1 :/ 'j ) f . i I I I I , I I Ii ! 5fa IN. MIN. TO EDGE NOTCH MUST NOT EXCEED 25 PERCENT OF STUD DEPTH BORED HOLES SHALL NOT BE LOCATED IN THE SAME CROSS S~CTION OF CUT OR NOTCH IN STUD For SI: 1 inch = 25.4 mm. Note: Condition for exterior and.bearing walls. STUD 5fa IN. MIN. TO EDGE IF HOLE IS BElWEEN 40 PERCENT ~ND 60 PERCENT OF STUD DEPTH. THEN STUD ~ MUST BE DOUBLE AND NO MORE THAN TWO ~ ,SUCCESSIVE STUDSARE DOUBLED AND siT':: BORED v G~URE R602.6(10 NOTCHING AND BORED HOLE LIMITATIONS FOR EXTERIOR WALLS AND BEARING WALLS .:. See the commentary for Section R602.6. the top plate by more than 50 percent of its width, a galvanized metal tie of not less than 0.054 inches thick (i.37mm) (16ga) . and 1112 inches (38mm) wide shall be fastened to each plate across .and to each side of the opening with not less than eight 16d nails at each side or equivalent. See Figure R602.6.1. Exception: When the entire side of the wall with the notch or cut is covered by wood structural panel sheathing. . .:. In many cases, drilling or notchinq of the top plate is r:!.ecessary to allow plumbing, heatino or other pipes to ~'. . , "l2...e placed WIthin the exterior walls and load-bear/no in-," . terior walls. When drilling or notching the top plate by ----- ,:' more than one-half its width is necessary. strapping across the fates as illustrated in Fi ure R602.6.1 is required to provide top plE.ltecontinuity and to retain Jbe structural integrity of the wall system as a whole. In the case of a double to late, ani the u er ofthe two plates needs to have a strap installed as described. R,602'.7 Headers. For heade,r spans see T~bles RS02.5(1) and RS02.5(2). . . . .:. At a wall opening, headers are required to transfer .' loads. received from the wall and floors/roof to the . foundation.' Framing over openings such as doors or . 2003 INTERNATIONAL RESIDENTIAL COOE<!!i COMMENTARY-VOLUME 1 6-14 FIGURE R602.6.1 - TABLE 602.7.2 EXTERIOR OR BEARING WALL ~ 16 GAGE (0.054 IN.) AND 1.5 IN. WIDE METAL TIE ACROSS AND TO EACH SIDE OF THE NOTCH WITH 8-16d NAILS EACH SIDE PIPE For SI: 1 inch = 25.4 mm. , c;;;,RE R602.6.~ TOP PLATE FRAMING TO ACCOMMODATE PIPING .:. See the commentary for Section R602.6.1. fished based on the .construction of the header, the header depth, and the depth of the house. Note "a" to the table explains the depth criteria; which is based on a single story with a clear-span trussed roof or a two-. stoiyin which part of the load from the floors and roofs is supported by interior bearing walls. House depth is based on the span from the header to an interior bear- ing wall or the opposing exterior waiL 2-inchcby-4-inch (51 mm by 102 mm) member may be used as a, header in interior or exterior nonbearing walls for openings up to 8 feet (2438 mm) in .width if the vertical distance to the parallel nailing surface above is not more than 24 inches (610 mm). For such nonbearing he'a:ders, no cripples or blocking are required above the header. ' " R602. 7.2 N onbearing walI:s. Load-bearing headers are notre- quired in interior or exterior nonbearing walls. A single flat .:. In walls that are not supporting significant loads, the code provides a simple (more economical) option for constructing headers, TABLE R602.7.2 ' .., MAXIMUM SPANS FOR WOOD STRUCTURAL PANEL BOX HEADERsa " HEADER DEPTH HOUSE DEPTH (feet) HEADER CONSTRUCTIONb (inches) 24 26 , 28 ,3D 32 Wood structural panel-aile side 9 4 4 3, 3 - 15 5 5 4 3 3 Wood structural panel-both sides 9 7 5 5 4 3 15 8 8 7 7 6 J .j j I 1 J For S1: 1 inch = 25.4 =, 1 foot = 304.8 mID. a. SP1lIlS are. based on single story with clear-span trussed roof or two-story with floor and roof supported by interior-bearing wails. b. See !<igureRi5o.2.7.2 f~r c;?n~truction details. ' .:. See the commentary for Section R602.7.1. 6-16 . 2003 INTERNATIONAL RESIDENTIAL CODE@.COMMENTARY-VOLUME, 1 i 1 t~!:[M7fJiiidii~bt~)i:!;*;B~;I~~\~~\~;;~;i;;?;:~;;;~;';),&~f';-;}~i!.;{?i;t:~i,i;:t1~t0~;lt~lf5.i~t~~?4~~ilf$fB:a;;~~;f~~!i~ittJt~~~fJ{Rif.~iJj;,t01~f~!W&%!j:;;1);;%;ru ml11EII HSS/5S Stud Shoes - Stud Shoes reinforce studs notched in construction. They are NOT a total replacement of removed material. Installs over pipe up to 2%' outside diameter. HSS2-3 is designed for tripie 2x studs. HSS Stud Shoes provide tension load capacity as well as increased compression loads. Fiared flange provides greater strength. MATERIAL: 16 gauge. FINISH: Galvanized. INSTALLATION: Use all specified fasteners. See General Notes. . HSS: Bend flanges at 900 angle during installation, then bend back and screw into position (screws supplied). . Bend flanges one cycle> only. ..,/ . CODES: See page 12 for Code Listing Key .Ghart. HSS2-SDS1.5 (16 gauge) Heavy stud shoes to reinforce and protect single 2x studs where pipe is located. Uses 12 SDS% x11f2 screws (included). International Residential Codee- 2000/2003 R602.6 and P2603.2.1 International Building Codee. 2000/2003 2308.9.10 & 2308.9.11 LC.B.D.-Uniform Building Code -1997 2320.11.9 & 2320.11.10 International Plumbing Code - 2000/2003 305.8 HSS2-3-SDS3 (16 gauge) Heavy stud shoe for triple 2x stud. Uses 12 SDS%x2 screws (included). International Residential Co dee- 2000/2003 R602.6 and P2603.2.1 International Building Code"- 2000/2003 2308.9.10 & 2308.9.11 International Plumbing Code - 2000/2003 305.8 LC.B.D.-Uniform Building Code -1997 2320.11.9 & 2320.11.10 SS1.5 (16 gauge) stud shoes reinforce and protect plumbing in 2x. International Residential Codee- 2000/2003 R602.6 and P2603.2.1 International Building Codee - 2000/2003 2308.9.10 & 2308.9.11 International Plumbing Code - 2000/2003 305.8 LC.B.D.-Uniform Building Code -1997 2320.11.9 & 2320.11.10 12-10dx1% 12-10dx1% 12-10d 14-10d ci_:HS.S2-SDSt;5,'\}2x;::.j2-S[)S~)(I% :,'HSS2~2~sbst:i2i2)(,:'r1_Z~S[)SY4)(3 .:H$S2:3?SDS3:i,~3~2X~I~J2:'.SDSY4xt' :.HSS,ifcSOS31':;{,; ~.2H~t' ;.,7:tZrSpS1J.*3:i 1. Roof loads are 125% of floor loads unless limited by other criteria. Roor loads may be adjusted for other load durations according to the code, provided they do not exceed roof loads. 2. NAilS: 10d = 0.148" dia. x 3"'ong, 10dx1'!2 = 0.148" dia. x Wi' long. See page 16-17 for other nail sizes and intormation. HSS US Patent 6,176,057 k ~ I 2'/16' ~ 20/. 1- HSS2-3 STEP 2 Bend HSS (HSS2-3 shown) flanges one time only. Screw into position. :1 t r j , I 1 . i I j j <. j .( 'I I I I 1 1 ; I I .~ i STEP 1 Install HSS (HSS2-3 shown) over stud with flanges bent at a 900 angle. Typical SS1 Installation ~. - :,0<" ~ l:) ~ c:: ClI ... ii) ~ /I) ... !;: .. The RPS meets IBC, IRC, UBC and City of Los Angeles code requirements for HVAC and pipes in walls. FINISH: Galvanized, some products available in ZMAX. See Corrosion-Resistance, page 6-7. INSTAllATION: Use all specified fasteners. See General Notes. CODES: See page 12 for Code Listing Key Chart. RPS28 (16 gauge) to reinforce top plate, and RPS28Z (16 gauge ZMA)(TM) to reinforce sill plate. International Residential Codee. 2000/2003 R602.6.1 International Building Codee- 2000/2003 2308.9.8 LC.B.D.- Uniform Building Code -19972320.11.7 . Avai/;IJle with additional corrosion protection. Check with factory. I, .1 c.5 ~ o "-' w ;::: '" z o a: I- en z o en "- :;;: en on g '" -= 0> ,., = o "-' @ '" a a '" o 0> o ~ "-' SS ~-i: RPS Strap Ties I .. . It I S'h'-RPS18 &22 I ~ 12'- RPS28 =-l RPS18 RPS22 -RPS28 (INCOMPLETE NAIL PATTERN SHOWN) RPS ~ 1. loads include a 33% or 60% load duration increase on the fasteners for earthquake or wind loading, but DO NOT include a 33% stress increase on the steel capacity. Refer to page 13 for further explanation. 2. To meet the prescriptive IRe requirement 16d box nails (0.135' dia x 3W) may be used at 0.75 of the table load. 3. NAilS: 16d = 0.162" dia. x 3~'-2" lo~g. See page 16-17 for other nail sizes and information. Typical RPS Installation (Only one strap may be necessary to meet IRe requirements) .......... Fasteners ;;~ir:fa~~!tDWS~f.~1 Allowable Tension . Model Dimensions Notch (Total) .. loads (SPFIHF) Code Ga No. Width KCi33)};' 'i(160j'.> -(133) I (160) Rilf. . W l Nails RPS18 1% 180/16 ~5W 12-16d 1150 1380 990 1190 RPS22 1% 220/1. <: 5'12' 12-16d '~1150", "'. 1380H. 990 1190 33,96, 16 1% 220/1. 16-16d :;)535',; 1805;';,' 1325 1585 122,128 RPS28 1'12 280/1. ~ 12' 12-16d 1150 1380 990 1190 1% 280/1. 16-16d 1535 1805 1325 1585 -"'.-- ._~ POLL OF SURROUNDING CITIES (12/15/05) As requested by the Board, at their 11-10-05 meeting, staff sent an e-mail polling several of the surrounding building departments and our findings are shown below. Question on commercial and residential construction: Does your city have a local building code amendment that requires a minimum 6" stud wall be used where drain, waste & vent (D WV - horizontal and/or vertical) plumbing is installed? CITIES RESPONSE Baytown No local amendment Deer Park No local amendment Houston No local amendment League City No local amendment Nassau Bay No local amendment Pasadena No local amendment Webster No local amendment -'~