In high risk fire zones in california exterior walls that are not otherwise required to be 1 hour rated must meet requirements for fire resistance lp flameblock sheathing has been evaluated to be used with the following architectural claddings.
1 hr exterior wall with wood siding.
O c double top plates single bottom plate 2.
Wd stud 5 8 sheetrock brand gypsum panels firecode rating applicable to fire n c core interior 1 foamed plastic and 1 2 plywd siding exposure on interior 2 x 4 16 o c 3 1 2 thermafiber fs 15 blankets face only.
This assembly is fire rated for 1 hour from both sides.
O c double top plates single bottom plate.
1 2 cedar or redwood.
Plywood siding is an all wood exterior grade panel.
Wood veneers on exterior walls of buildings of type i ii iii and iv construction shall be not less than 1 inch 25 mm nominal thickness 0 438 inch 11 1 mm exterior hardboard siding or 0 375 inch 9 5 mm exterior type wood structural panels or particleboard and shall conform to the following.
2 1 3 4 2.
7 8 exterior cement plaster at exterior condition min.
Comments system applications rating reference 1 hr.
This intertek listed assembly is commonly used in 1 hour exterior walls along the property line including single family construction.
It plywood siding is an all wood exterior grade panel.
Interior sheathing 5 8 in.
It is ideal for siding applications from new home construction utility buildings planters dog houses and other remodeling or do it yourself projects.
2 x 4 wood framing at 16 o c.
Exterior wall fire detail physical data description test no.
Bearing wall rating 1 hr exposed to fire on interior face only.
Oc in with two 2 by 4 top and one 2 by 4 bottom plates.
Framing nominal 2x4 wood studs spaced 16 in.
Fire rated wood frame wall and floor ceiling assemblies 5 ws4 1 1 one hour fire resistive wood frame wall assembly 2x4 wood stud wall 100 design load astm e 119 nfpa 251.
Wood structural shear panel where occurs metal lath over 1 layer of weather resistive barrier 7 8 exterior cement plaster one hour rating per ibc table 720 1 2 item 15 1 3 1 hour exterior stucco wall see footnote m for reduction of allowable f c.
Warnock hersey fire resistance rated wall assemblies warnock hersey product listings standards products are certified against astm iso en can cgsb can ulc 1 hour fire resistive rated wall assemblies click the link above each design number below represents a james hardie 1 hour fire resistive wall assembly jh fcs 60 01.
Wide applied vertically unblocked 3.
Ws4 1 3 one hour fire resistive wood wall assembly 2x4 wood stud wall 78 design load astm e 119 nfpa 251 1.
Wood studs nom 2 by 4 in spaced 16 in.
Lp smartside lap and panel siding 2.
This assembly allows for 2x4 wall construction and is fire rated for 1 hour from both sides.
Framing nominal 2x4 wood studs spaced 16 in.