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Home My WebLink About1105 Kensington Park DrPERMIT # c 4 TRiY' y v J' 3 i September 6, 2017 Rich Carbone Roger B Kennedy Construction 1105 Kensington Park Drive Altamonte Springs, FL 32714 Project: Seminole Commons Re: Rated Wall for Conduit protection Dear Mr Carbone yyqyyq.. • gyp ' y d'9 ,' • We have received the RFI regarding the protection of several conduits that are in Electric Room 161 and Storage Room 155 that are penetrating the rated floor assembly and are unable to be fire caulked. We have reviewed the situation and agree that the installation of a rated wall to encase the conduits is an acceptable solution. The assembly that can be used is the attached Design No. U415. If you have any further concerns or questions, please do not hesitate to contact us. Cordially, Chris Grimes AIA Principal ORAarchitecture PA Encl: Copy: File: ORAarchitecture 119 W Hargett Street, Suite 6001 Raleigh, NC 276011919.754.99241 WWW.ORAARCHITECTURE.NET I ',I BXiW :U44G _Firs 1?noic4or,nn .ANSL4) 263 Design No. U415 BXUV.U415 Fire Resistance Ratings - ANSI/UL 263 Page Bottom Design/System/Construction/Assembly Usage Disclaimer Authorities Having Jurisdiction should be consulted in all cases as to the particular requirements covering the installation and use of UL Certified products, equipment, system, devices, and materials. Authorities Having Jurisdiction should be consulted before construction. Fire resistance assemblies and products are developed by the design submitter and have been investigated by UL for compliance with applicable requirements. The published Information cannot always address every construction nuance encountered in the field. When field issues arise, it is recommended the first contact for assistance be the technical service staff provided by the product manufacturer noted for the design. Users of fire resistance assemblies are advised to consult the general Guide Information for each product category and each group of assemblies. The Guide Information Includes specifics concerning alternate materials and alternate methods of construction. Only products which bear UL's Mark are considered Certified. BXUV - Fire Resistance Ratings - ANSI/UL 263 BXUV7 - Fire Resistance Ratings - CAN/ULC-S101 Certified for Canada See General Information for Fire -resistance Ratings - ANSI/UL 263 See General Information for Fire Resistance Ratings - CAN/ULC-5101 Certified for Canada Design No. U415 August 03, 2017 Nonbearing Wall Ratings — 1, 2, 3 or 4 Hr Indicates such products shall bear the UL or cUL nada), respectively. employing the UL or cUL Certification (such 4 ix). or 60G mal O.C. lo w M...".t:...:-. t....t ..r.tw.r. wrw,ir_.......S.L:w:w'w•_•n..wv...«...._........ «_«...• /. Horizontal Sectiorx. 21 W. Ur Sil(I nine ri-C. _ ! 140 ri7ont.al Section http://database.ul.com/cgi-bin/XYV/template/LISEXT/1 FRAME/showpage.html?name--BX... 9/6/2017 491tA M 55M; P M M. TV W-r %I L L System C — 2 Hr. v, ..tv,0-,em Ilk, 3 1,14 ili. or 600 taus G. 4. 7 6 Horizontal Section System E — 2 11r. Ll IlorizonLal 'Ziection Hr. Ah -- it f. http://database.ul.comlcgi-binIXYVItemplateALISEXT11FRAMElshowpage.html?name=BX... 9/6/2017 SVs•t em G -•- 3 Hr. wT RA\• \.A •+V V It il: ' wifA«.t:. ' i.i:.• '...-..-.":.!•' • :.•ir :ii-..a.:,.:n:. :..:.:e.V..lt•:..._.: _' . R...-.- v....:=.<.. n.-...-..'_n•rt-wA.?.^'r^i•".'wi:....w..P.t.. .•.. w..i.n...... ••.v-ry 1.r w W .w.r_...•.•-..... Horizon Lal Section 4-0 24 in. or 000 MIA O.C. Y 5... ,tw1»ww w.ln .w.N•w t _rfu 24 In. or %10 0 sinA O.C. -- w..-..r.-... :.. c._...... - _.,..t,.—....;.._. .,.. yr. /+ —,.—.- - t } 4/1 w.,...w..,.w-.—,.a,.... -- 1. Floor, Side and Ceiling Runners — "J" - shaped runner, min 2-1/2 in. deep (min 4 in. deep when System C Is used), with unequal legs of 1 in. and 2 in., fabricated from min 24 MSG (min 20 MSG when Item 4A, 413, 4C, 4D or 7 are used) galv steel. Runners positioned with short leg toward finished side of wall. Runners attached to structural supports with steel fasteners located not greater than 2 in. from ends and not greater than 24 in. OC. "E" - shaped studs (Item 2A) may be used as side runners in place of "J" - shaped runners. 2. Steel Studs — "C-H" - shaped studs, min 2-1/2 in. deep (min 4 in. deep when System C is used), fabricated from min 25 MSG (min 20 MSG when Items 2D, 4A, 4B, 4C, 4D or 7 is used) galv steel. Cut to lengths 3/8 to 1/2 in. less than Floor-to-celling height and spaced 24 in. or 600 mm OC (max 16 in. OC when Items 4A, 4B, 4C, or 4D are used). 2A. Steel Studs — (Not Shown) — "E" - shaped studs installed back to back in place of "C-H" - shaped studs (Item 2) "E" shaped studs secured together with steel screws spaced a maximum 12 in. OC. Fabricated from min 25 MSG (min 20 MSG when Item 2D, 4A, 4B or 7 is used) gaiv steel, min 2-1/2 in. deep (min 4 In. deep when System C is used), with one leg 1 In. long and two legs 3/4 in. long. Shorter legs 1 in. apart to engage gypsum liner panels. Cut to lengths 3/8 to 1/2 In. less than Floor to ceiling heights. 2B. Furring Channels — (Optional, Not Shown) — For use with single or double layer systems. Resilient furring channels fabricated from min 25MSG corrosion protected steel, Installed horizontally, and spaced vertically a max 24 in. OC. Flange portion of channel attached to each intersecting "C-H" or "E" stud on side of stud opposite the 1 in. liner panels with 1/2 In. long Type S or S-12 pan -head steel screws. When furring channels are used, wallboard to be Installed vertically only. Not to be used with Type FRX-G gypsum wallboard, Type RB-LBG (Item 4A), Type Nelco (Item 4B) or cementitious backer units (Item 7). http://database.ul.comlcgi-bin/XYVItemplatelLISEXT11FRA\4EIshowpage.html?name=BX... 9/6/2017 2C. Furring Channels — For use with System I - "Hat" - shaped, 25 MSG galv steel furring channels attached directly over the Inner layers of wallboard to each stud with 2 in. long Type S pan head steel screws. Screws alternate from top Flange to bottom Flange at each stud intersection. Furring channels spaced vertically max 24 in. OC. 2D. Steel Framing Members* — (Optional, Not Shown) — For use with single or double layer systems. Furring channels and Steel Framing Members as described below. Not to be used with Type FRX-G gypsum wallboard, Type RB-LBG (Item 4A), Type Neico (Item 4B) or cementitious backer units (Item 7): a. Furring Channels — Formed of No. 25 MSG galv steel. 2-9/16 In. or 2-23/32 in. wide by 7/8 In. deep, spaced max. 24 in. OC perpendicular to studs. Channels secured to studs as described In Item b. Gypsum board installed vertically only and attached to furring channels as described In Item 4. b. Steel Framing Members* — Used to attach furring channels (Item 213a) to studs (Item 2 or 2A). Clips spaced max. 24 in. OC., and secured to studs with No. 8 x 1-1/2 in. minimum self - drilling, S-12 steel screw through the center grommet. Furring channels are friction fitted Into clips. RSIC-1 clip for use with 2-9/16 in. wide furring channels. RSIC-1 (2.75) clip for use with 2-23/32 in. wide furring channels. PAC INTERNATIONAL L L C — Types RSIC-1, RSIC-1 (2.75) 2E. Steel Framing Members* — (Optional, Not Shown) — Furring channels and Steel Framing Members as described below: a. Furring Channels — Formed of No. 25 MSG galv steel. Spaced 24 in. OC perpendicular to studs. Channels secured to studs as described In Item b. Ends of adjoining channels overlapped 6 In. and tied together with double strand of No. 18 AWG galvanized steel wire.Gypsum board attached to furring channels as described in Item 4. b. Steel Framing Members* — Used to attach furring channels (Item 2Ea) to studs. Clips spaced 24 in. OC., and secured to studs with 2 in. coarse drywall screw with 1 in. diam washer through the center hole. Furring channels are friction fitted Into clips. STUDCO BUILDING SYSTEMS — RESILMOUNT Sound Isolation Clips - Type A237R 2F. Steel Framing Members* — (Optional, Not Shown) — For use with single or double layer systems. Furring channels and Steel Framing Members as described below. Not to be used with Type FRX-G gypsum wallboard, Type RB-LBG (Item 4A), Type Nelco (Item 4B) or cementitious backer units (Item 7): a. Furring Channels — Formed of No. 25 MSG galv steel. 2-3/8 in. wide by 7/81n. deep, spaced max. 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b. Gypsum board installed vertically only and attached to furring channels as described in Item 3. b. Steel Framing Members* — Used to attach furring channels (Item 213a) to studs (Item 2 or 2A ). Clips spaced max. 24 in. OC. GENIECLIPS secured to studs with No. 8 x 1-1/2 in. minimum self -drilling, S-12 steel screw through the center grommet. Furring channels are friction fitted into clips. PLITEQ INC — Type GENIECLIP 3. Gypsum Board* — Gypsum liner panels, nom 1 in. thick, 24 in. or 600 mm (for metric spacing) wide. Panels cut 1 in. less in length than Floor to ceiling height. Vertical edges Inserted in "H" portion of "C-H" studs or the gap between the two 3/4 in. legs of the "E" studs. Free edge of end panels attached to long leg of vertical "I" - runners with 1-5/8 in. long Type S steel screws spaced not greater than 12 in. OC. When wall height exceeds liner panel length, liner panel may be butted to extend to the full height of the wall. Horizontal joints need not be backed by steel framing. In System I, butt joints in liner panels are staggered min 36 in. Butt joints backed with 6 In. by 22 in. strips of 3/4 in. thick gypsum wallboard (Item 4). Wallboard strips centered over butt joints and secured to liner panels with six 1-1/2 in. long Type G steel screws, three screws along the 22 in. dimension at the top and bottom of the strips. CGC INC — Type SLX UNITED STATES GYPSUM CO — Type SLX USG BORAL ZAWAWI DRYWALL L L C SFZ — Type SLX USG MEXICO S A DE C V — Type SLX 4. Gypsum Board* — System A — 1 Hr Gypsum panels, with beveled, square or tapered edges, nom 5/8 in. thick, 48 in. or 1200 mm wide, applied vertically or horizontally, attached to studs with 1 in. long Type S steel screws spaced 12 in. when Installed vertically or 8 in OC when installed horizontally. Horizontal joints need not be backed by steel framing. http://database.ul.com/cgi-bin[XYVItemplatelLISEXT/1 FRAMElshowpage.html?name=BX... 9/6/2017 CGC INC — Types AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SOX, SHX, ULX, USGX, WRC, WRX UNITED STATES GYPSUM CO — Types AR, C, FRX-G, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SGX, SHX, ULIX, ULX, WRC, WRX, USGX. When ULIX is used insulation, Item 6, Batts and Blankets* is required and minimum stud depth is 4 in. USG BORAL ZAWAWI DRYWALL L L C SFZ — Types C, SCX USG MEXICO S A DE C V — Types AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX System B — 2 Hr Gypsum panels, with beveled, square or tapered edges, nom 1/2 in. or 5/8 in. thick, 48 in. or 1200 mm wide, applied vertically or horizontally in two layers. Inner or base layer attached to studs with i in. long Type S steel screws spaced 24 In. OC when Installed vertically or 16 in. OC when Installed horizontally. Outer or face layer attached to studs with 1-5/8 In. long Type S steel screws spaced 12 in. OC when installed vertically and staggered 12 in. from base layer screws or 8 In. OC when installed horizontally and staggered 8 in. from base layer screws. Horizontal joints between inner and outer layers staggered a min of 12 in. Horizontal joints need not be backed by steel framing. Vertical joints centered over studs and staggered 24 in. CGC INC — 1/2 In. Type C, IP-X2, IPC-AR or WRC; 5/8 in. Types AR, C, IP-AR, IP-Xi, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX UNITED STATES GYPSUM CO — 1/2 in. Types C, IP-X2, IPC-AR, or WRC; 5/8 in. Types AR, C, FRX-G, IP-AR, IP-X1, I17- X2, IPC-AR, SCX, SGX, SHX, ULIX, ULX, USGX, WRC, WRX. USG BORAL ZAWAWI DRYWALL L L C SFZ — 1/2 in. Type C; 5/8 in. Types C, SCX USG MEXICO S A DE C V — 1/2 in. Types C, IP-X2, IPC-AR or WRC; 5/8 in. Types AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX System C — 2 Hr Gypsum panels, with beveled, square or tapered edges, nom 3/4 In. thick, 48 In. or 1200 mm wide, applied vertically or horizontally, secured with 1-1/4 in. long Type S steel screws spaced 8 in. OC along vertical edges and 12 in. OC in the field when installed vertically or 8 in. OC along the vertical edges and In the field when installed horizontally. Horizontal joints need not be backed by steel framing. Screws along side joints offset 4 in. Requires min 4 in. deep framing per Items 1, 2 and 3. Requires min 3 in. thick mineral wool batts per Item 6. CGC INC — Types IP-X3 or ULTRACODE UNITED STATES GYPSUM CO — Types IP-X3 or ULTRACODE USG BORAL ZAWAWI DRYWALL L L C SFZ — Type ULTRACODE USG MEXICO S A DE C V — Types IP-X3 or ULTRACODE System D — 2 Hr Gypsum panels, with beveled, square or tapered edges, nom 5/8 in. thick, 48 in. or 1200 mm wide, applied vertically or horizontally, attached directly to studs with 1 In. long Type S steel screws spaced 24 In. when Installed vertically or 16 in. OC when Installed horizontally. Horizontal joints need not be backed by steel framing. Requires face layer of 1/2 or 5/8 in. thick cementitious backer units per Item 7 and min 1-1/2 in. thick mineral wool batts per Item 6. CGC INC — Types AR, C, IP-AR, IP-Xi, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX UNITED STATES GYPSUM CO — Types AR, C, FRX-G, IP-AR, IP-XI, IP-X2, IPC-AR, SCX, SGX, SHX, ULIX, ULX, USGX, WRC, WRX. USG BORAL ZAWAWI DRYWALL L L C SFZ — Types C, SCX http://database.ul.com/cgi-binIXYVItemplateALISEXT/1 FRAMElshowpage.html?name=BX... 9/6/2017 USG MEXICO S A DE C V — Types AR, C, IP-AR, IP-Xi, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX System E — 2 Hr Gypsum panels, with beveled, square or tapered edges, nom 1/2 in. or 5/8 In. thick, 48 in. or 1200 mm wide, applied vertically or horizontally, attached to studs with i in. long Type S steel screws spaced 12 in. OC when Installed vertically or 8 In. when Installed horizontally. Horizontal joints need not be backed by steel framing. CGC INC — 1/2 In. Types C, IP-X2, IPC-AR; 5/8 in. Types AR, C, IP-AR, IP-XI, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX UNITED STATES GYPSUM CO — 1/2 in. Types C, IP-X2, IPC-AR; 5/8 in. Types AR, C, FRX-G, IP-AR, IP-Xi, IP-X2, IPC- AR, SCX, SGX, SHX, ULIX, ULX, USGX, WRC, WRX. USG BORAL ZAWAWI DRYWALL L L C SFZ — 1/2 in. Type Q 5/8 In. Types C, SCX USG MEXICO S A DE C V — 1/2 in. Types C, IP-X2, IPC-AR; 5/8 in. Types AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX System F — 2 Hr Gypsum panels, with beveled, square or tapered edges, nom 1/2 in. or 5/8 in. thick, 48 in. or 1200 mm wide, applied vertically In two layers. Inner or base layer attached to resilient furring channels (Item 2B) with 1 in. long Type S steel screws spaced 24 in. Outer or face layer attached to resilient furring channels (Item 2B) with 1-5/8 in. long Type S steel screws spaced 12 In. OC and staggered 12 in. from base layer screws. Joints between inner and outer layers staggered 24 In. CGC INC — 1/2 in. Type C, IP-X2, IPC-AR or WRC; 5/8 In. Types AR, C, FRX-G, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX UNITED STATES GYPSUM CO — 1/2 In. Type C, IP-X2, IPC-AR or WRC; 5/8 in. Types AR, C, FRX-G, IP-AR, IP-Xi, IP- X2, IPC-AR, SCX, SGX, SHX, ULIX, ULX, USGX, WRC, WRX. USG BORAL ZAWAWI DRYWALL L L C SFZ — 1/2 in. Type C; 5/8 in. Types C, SCX USG MEXICO S A DE C V — 1/2 In. Types C, IP-X2, IPC-AR or WRC; 5/8 in. Types AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX System G — 3 Hr Gypsum panels, with beveled, square or tapered edges, nom 5/8 in. thick, 48 in. or 1200 mm wide, applied vertically or horizontally in three layers. Inner or base layer attached to studs with 1 in. long Type S steel screws spaced 24 in. OC when Installed vertically or 16 in OC when Installed horizontally. Middle layer attached to studs with 1-5/8 in. long Type S steel screws spaced 24 in. when installed vertically or 16 in. OC when Installed horizontally. Outer or face layer attached to studs with 2-1/4 in. long Type S steel screws spaced 16 in. when Installed vertically or 12 in. OC when Installed horizontally. Screws offset 6 In. from layer below. Horizontal joints on adjacent layers staggered a min of 12 in. . Horizontal joints need not be backed by steel framing. Vertical joints centered over studs and staggered 24 in. on adjacent layers. CGC INC — Types C, IP-X2, IPC-AR, WRC UNITED STATES GYPSUM CO — Types C, IP-X2, IPC-AR, WRC USG BORAL ZAWAWI DRYWALL L L C SFZ — Type C USG MEXICO S A DE C V — Types C, IP-X2, IPC-AR, WRC System H — 3 Hr http://database.ul.com/cgi-binIXYVItemplate/LI SEXT/1 FR.AMElshowpage.html?name=BX... 9/6/2017 Gypsum panels, with beveled, square or tapered edges, nom 5/8 in. thick, 48 in. or 1200 mm wide, applied vertically or horizontally, two layers over the flange of the "C" section of the studs, one layer over the flange of the "H" section of the studs. Inner or base layer attached to studs with 1 in. long Type S steel screws spaced 24 in. OC when installed vertically or 16 in. OC when Installed horizontally. Face layer attached to studs with 1-5/8 in. long Type S steel screws spaced 16 In. when Installed vertically or 12 in. OC when Installed horizontally. Screws offset 6 In. from layer below. Horizontal joints on adjacent layers staggered a min of 12 in. Horizontal joints need not be backed by steel framing. Vertical joints centered over studs and staggered 24 in. on adjacent layers. CGC INC — Types C, IP-X2, IPC-AR, WRC UNITED STATES GYPSUM CO — Types C, IP-X2, IPC-AR, WRC USG BORAL ZAWAWI DRYWALL L L C SFZ — Type C USG MEXICO S A DE C V — Types C, IP-X2, IPC-AR, WRC System I — 4 Hr Gypsum panels, with beveled, square or tapered edges, nom 3/4 in. thick, 4 ft wide (or 1200 mm for metric spacing) wallboard with square or tapered edges. Total of four layers to be used. First and second (inner) layers applied vertically or horizontally over the steel studs. Horizontal joints need not be backed by steel framing. When applied vertically, joints centered over studs and staggered min 24 in., otherwise all joints staggered min 12 in. First layer secured to studs with 1-1/4 in. long Type S self -drilling, self -tapping bugle -head steel screws spaced 24 in. OC. Second layer secured to studs with 2-1/4 in. long Type S self -drilling, self -tapping bugle -head steel screws spaced 12 in. OC. Third layer applied vertically over the furring channels (Item 2C) with a 1-1/4 in. long Type S self -drilling, self -tapping bugle -head steel screws spaced 12 In. OC. Fourth layer applied vertically or horizontally with 2-1/4 in. long Type S self -drilling, self -tapping bugle -head steel screws spaced 12 in. OC. When applied vertically, joints to be staggered min 24 In. from third layer, otherwise all joints staggered min 12 in. CGC INC — Types IP-X3 or ULTRACODE UNITED STATES GYPSUM CO — Types IP-X3 or ULTRACODE USG BORAL ZAWAWI DRYWALL L L C SFZ — Type ULTRACODE USG MEXICO S A DE C V — Types IP-X3 or ULTRACODE 4A. Gypsum Board* — (As an alternate to Item 4 Systems A, B, C, D, E, G, H, and I when used as the base layer, For direct attachment only) — Nom 5/8 In. or 3/4 in. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over 20 MSG steel studs and staggered min 1 stud cavity on opposite sides of studs. See Items 1, 2, 2A, 2B and 2D. Wallboard secured to studs with 1-1/4 in. long Type S-12 steel screws spaced 8 in. OC at perimeter and 12 in. OC in the field. For Joint Compound see Item 5. To be used with Lead Batten Strips (see Item 9) or Lead Discs or Tabs (see Item 10). RAY -BAR ENGINEERING CORP — Type RB-LBG 4B. Gypsum Board* — (As an alternate to Item 4 Systems A, B, C, D, E, G, H, and I when used as the base layer, For direct attachment only) — Nominal 5/8 In. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over studs and staggered min 1 stud cavity on opposite sides of studs. Wallboard secured to studs with 1-1/4 in. long Type S-12 (or #6 by 1-1/4 in. long bugle head fine driller) steel screws spaced 8 in. OC at perimeter and 12 in. OC in the field. NEW ENGLAND LEAD BURNING CO INC, DBA NELCO — Type Nelco 4C. Gypsum Board* — (As an alternate to Item 4 Systems A, B, C, D, E, G, H, and I when used as the base layer, For direct attachment only) — Nom 5/8 or 3/4 in. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over 20 MSG steel studs and staggered min 1 stud cavity on opposite sides of studs. See Items 1, 2, 2A, 25 and 2D. Wallboard secured to studs with 1-1/4 in. long Type S-12 steel screws spaced 8 in. OC at perimeter and 12 in. OC in the field. For Joint Compound see Item S. To be used with Lead Batten Strips (see Item 9A) or Lead Discs (see Item 10A). Lead batten strips required behind vertical joints of lead backed gypsum wallboard and optional at remaining stud locations. Lead batten strips, min 2 in. wide, max 10 ft long with a max thickness of 0.140 In. placed on the face of studs and attached to the stud with two 1 in. long Type S-8 pan head steel screws, one at the top of the strip and one at the bottom of the strip. MAYCO INDUSTRIES INC — Type X-Ray Shielded Gypsum http://database.ul.com/cgi-binIXYVItemplate/LI SEXT/1 FRAMElshowpage.html?name--BX... 9/6/2017 w t 4D. Gypsum Board* — (As an alternate to Item 4 Systems A, B, C, D, E, G, H, and I when used as the base layer, For direct attachment only) — Nom 5/8 in. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over studs and staggered min 1 stud cavity on opposite sides of studs. Wallboard secured to studs with 1-1/4 in. long Type S-12 steel screws gypsum panel steel screws spaced 8 in. OC at perimeter and 12 in. OC In the field. Lead batten strips required behind vertical joints of lead backed gypsum wallboard and optional at remaining stud locations. Lead batten strips, min 2 in. wide, max 8 ft long with a max thickness of 0.14 in. placed on the face of studs and attached to the stud with construction adhesive and two 1 In. long Type S-12 pan head steel screws, one at the top of the strip and one at the bottom of the strip. Lead discs, nominal 3/8 in. diam by max 0.085 in. thick. Compression fitted or adhered over the screw heads. Lead batten strips and discs to have a purity of 99.9% meeting the Federal specification QQ-L-201f, Grade "C". RADIATION PROTECTION PRODUCTS INC — Type RPP - Lead Lined Drywall S. Joint Tape and Compound — (Not Shown) Systems A, 0, C, E, F, G, H, I Joints on outer layers of gypsum boards (Item 4 and 4A) covered with paper tape and joint compound. Paper tape and joint compound may be omitted when gypsum boards are supplied with square edges. Exposed screw heads covered with joint compound. 6. Batts and Blankets* — Systems A, B, E, F, G, H, I Optional) — Mineral wool or glass fiber batty partially or completely filling stud cavity. Any mineral wool or glass fiber bait mineral bearing the UL Classification Marking as to Fire Resistance. System A With Type ULIX Gypsum Boards Placed in stud cavities, any min. 3-1/2 in. thick glass fiber insulation bearing the UL Classification Marking as to Surface Burning Characteristics and/or Fire Resistance. See Batts and Blankets (BKNV or BZIZ) Categories for names of Classified companies. Systems C & D Min 3 in. (System C) and min 1-1/2 in. (System D) thick mineral wool batts, friction fitted between the studs and floor and ceiling runners. ROXUL INC — Type AFB THERMAFIBER INC — Type SAFE, SAFB FF 7. Cementitious Backer Units* — (System D) — Nom 1/2 or 5/8 in. thick panels, square edge, attached to studs over gypsum wallboard with 1-5/8 in. long, Type S-12, corrosion resistant steel screws spaced 8 in. OC and staggered 8 in. from gypsum wall board screws. Joints covered with glass fiber mesh tape. Vertical joints staggered one stud cavity from gypsum wallboard joints. Horizontal joints staggered a min of 12 in. from the gypsum wallboard joints. UNITED STATES GYPSUM CO — Type DCB 8. Laminating Adhesive* — (Optional, Not Shown) — Used to bond outer layer of Cementitious Backer Units (Item 7) to Inner layers of Gypsum Board (Item 4) in System D. ANSI A136.1 Type 1 organic adhesive applied with 1/4 in. square notched trowel. See Adhesives (BYWR) in the Fire Resistance Directory or Adhesives (BJLZ) In the Building Materials Directory for names of Classified companies. 9. Lead Batten Strips — (Not Shown, For Use With Item 4A) — Lead batten strips, min 1-1/2 in. wide, max 10 ft long with a max thickness of 0.125 in. Strips placed on the interior face of studs and attached from the exterior face of the stud with two 1 In. long Type S-12 pan head steel screws, one at the top of the strip and one at the bottom of the strip. Lead batten strips to have a purity of 99.9% meeting the Federal specification QQ-L-201f, Grade "C". Lead batten strips required behind vertical joints of lead backed gypsum wallboard (Item 4A) and optional at remaining stud locations. Required behind vertical joints. 9A. Lead Batten Strips — (Not Shown, for use with Item 4C) — Lead batten strips, 2 in. wide, max 10 it long with a max thickness of 0.140 In. Strips placed on the face of studs and attached to the stud with two min. 1 in. long min. Type S-8 pan head steel screws, one at the top of the strip and one at the bottom of the strip or with one min. 1 in. long min. Type S-8 pan head steel screw at the top of the strip. Lead batten strips to have a purity of 99.5% meeting the Federal specification QQ-L-201f, Grades "B, C or D".. Lead batten strips required behind vertical joints of lead backed gypsum wallboard (Item 6) and optional at remaining stud locations. 10. Lead Discs or Tabs — (Not Shown, For Use With Item 4A) — Used in lieu of or in addition to the lead batten strips Item 9) or optional at other locations - Max 3/4 in. diam by max 0.125 in. thick lead discs compression fitted or adhered over steel screw heads or max 1/2 in. by 1-1/4 in. by max 0.125 in. thick lead tabs placed on gypsum boards (Item 4A) underneath screw locations prior to the installation of the screws. Lead discs or tabs to have a purity of 99.9% meeting the Federal specification QQ-L-201f, Grade "C". 10A. Lead Discs — (Not Shown, for use with Item 4C) — Max 5/16 in. diam by max 0.140 in. thick lead discs compression fitted or adhered over steel screw heads. Lead discs to have a purity of 99.5% meeting the Federal Specification QQ-L-201f, Grades "B, C or D". http://database.ul.com/cgi-binIXYV/template2I SEXT/1 FRAME/showpage.html?name--BX... 9/6/2017