2 Hour Fire Rated Drywall Assembly

5 8 type x gypsum wallboard h 2 6 type s drywall screws 24 o c.

2 hour fire rated drywall assembly. Building codes have special requirements for the walls separating adjacent townhome units and the primary requirement is that they serve as two hour firewalls meaning that fire in one unit will require at least two hours before breaking through the wall. Sheathing on both sides. Section 721 3 2 of the florida building code. Table 2 two hour fire rated loadbearing wood frame wall assemblies.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 5 mineral wool batts. When you cannot maintain a minimum 3 4 in. Urb concealed grid system and tile.

Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. Each sheet of 5 8 inch type x drywall is rated to resist fire for one hour so two layers will produce a two hour firewall. 19 1 mm air space between the h stud assembly and any adjacent framing members. See general information for fire resistance ratings can ulc s101 certified for canada design criteria and allowable variances design no.

Put two sheets together on one side or use one sheet on each side of a wall. 5 8 type x gypsum wallboard h 2 6 type s drywall screws 8 o c. Assemblies rated from both sides. For a 2 hour fire rated assembly without the need for battens maintain a minimum 3 4 in.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. U419 july 12 2018 nonbearing wall ratings 1 2 3 or 4 hr see items 4 5 through 5k. 2x6 24 o c. Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies.

Fire safety caution passing a fire test in a controlled laboratory setting and or certifying or labeling a product as having a one hour two hour or any other fire resistance or protection rating and therefore as acceptable for use in certain fire rated assemblies systems does not mean that either a particular assembly system. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Concrete with cellular steel 3 hr. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

Double the number of type x sheets on the wall for a simple system installed over fire resistant fiberglass insulation.