System No. F-C-1064

F Ratings — 1 and 2 Hr (See Item 1)

T Ratings — 1 and 2 Hr (See Item 1)

1. Floor-Ceiling Assembly The 1 hr fire-rated solid or trussed lumber joist floor-ceiling assembly shall be constructed of the materials and in the manner specified in the individual L500 Designs in the UL Fire Resistance Directory. The 2 hr fire-rated wood joist floor-ceiling assembly shall be constructed of the material and in the manner specified in Design Nos. L505, L511 and L536 in the UL Fire Resistance Directory. The F and T Ratings of the firestop system are equal to the lessor of the ratings of the floor-ceiling and wall assemblies. The general construction features of the floor-ceiling assembly are summarized below:

A. Flooring System Lumber or plywood subfloor with finish floor of lumber, plywood or Floor Topping Mixture* as specified in the individual Floor-Ceiling Design. Max diam of floor opening is 3 in.

B. Wood Joists For 1 hr fire-rated floor-ceiling assemblies, nom 10 in. deep (or deeper) lumber, steel or combination lumber and steel joists, trusses or Structural Wood Members* with bridging as required and with ends firestopped. For 2 hr fire-rated floor-ceiling assemblies, nom 2 by 10 in. lumber joist spaced 16 in. OC with nom 1 by 3 in. lumber bridging and with ends firestopped.

C. Furring Channels (Not Shown)—Resilient galv steel furring installed perpendicular to wood joist between first and second layers of wallboard in 2 hr fire-rated assemblies. Furring channels spaced max 24 in. OC.

D. Gypsum Board* Nom 5/8 in. thick as specified in the individual Floor-Ceiling Design.

2. Chase Wall The through penetrant (Item 3) shall be routed through a 1 or 2 hr fire-rated single, double or staggered wood stud/gypsum wallboard chase wall constructed of the materials and in the manner specified in the individual U300 Series Wall and Partition Designs in the UL Fire Resistance Directory and shall include the following construction features:

A. Studs Nom 2 by 6 in. lumber or double nom 2 by 4 in. lumber studs.

B. Sole Plate Nom 2 by 6 in. lumber or parallel 2 by 4 in. lumber plates, tightly butted.

C. Top Plate The double top plate shall consist of two nom 2 by 6 in. lumber plates or two sets of parallel 2 by 4 in. lumber plates, tightly butted. Diam of opening to be 3 in.

D. Gypsum Board* Thickness, type, number of layers and fasteners shall be as specified in the individual Wall and Partition Design.

3. Through Penetrating Product* — Flexible Metal Piping One nom 1-1/4 in. diam (or smaller) steel flexible metal piping to be installed either concentrically or eccentrically within the firestop system. The annular space shall be min 1/4 in. to max 1-1/2 in. Piping to be rigidly supported on both sides of floor assembly. OMEGA FLEX INC TITEFLEX CORP A BUNDY CO WARD MFG INC

4. Firestop System The firestop system shall consist of the following:

A. Packing Material Foam backer rod firmly packed into opening as a permanent form. Packing material to be recessed from top surface of subfloor and bottom surface of lower top plate as required to accommodate the required thickness of fill material.

B. Fill, Void or Cavity Material* — Caulk Min 1/4 in. thickness of fill material applied within annulus, flush with top surface of subfloor or with bottom surface of lower top plate. RECTORSEAL — Biostop 500+ Caulk