METAL BUILDINGS MEET & EXCEED VARIED BUILDING CODES

Building codes require metal building construction to be fire rated in certain situations. To address these requirements, MBMA conducted fire tests at Underwriters Laboratory (UL), Intertek, and FM Global that showed metal buildings can easily comply with one- and two-hour fire-rating requirements. Use the table below to find fire protection details that meet your needs.

Fire Protection by Construction Type

Click on the UL Rated Assembly numbers below to go to the UL website page for that detail.  If you do not already have a free UL account, you will be prompted to create one to access the details.

CONSTRUCTION TYPE

UL RATED 
ASSEMBLY

HOURS

DESCRIPTION

Column

Built-up I-shape

X524

1, 2

Gypsum Board

Light-gauge channel

X530

1, 2

Gypsum Board

Pipe

X531

1.5

Gypsum Board

Roof

Ceiling

P516

1

Gypsum Board

P265

1, 1.5

Acoustical Tile

P268

1, 1.5

Acoustical Tile

Wall

Load Bearing

U425

0.75, 1, 1.5, 2

Gypsum Board

U489

1, 1.5, 2

Gypsum Board

Non-Load Bearing

U419

1, 2, 3, 4

Gypsum Board

V421

1, 2

Gypsum Board with girts at 48-in. max o.c. spacing

W404

1

Gypsum Board with girts at 90-in. max o.c. spacing and mineral wool, option for rigid foam board

W413

2

Gypsum Board with girts at 90-in. max o.c. spacing, option for rigid foam board

W447 / ULC U421

1, 2

Gypsum Board with girts at 48-in. max o.c. spacing

Joints, Compressed Insulation System

Purlin - Inside Wall

HW-D-0488

1

Gypsum Board and fire caulk with rated roof ceiling

Purlin - Perpendicular to Wall

HW-D-0489

1

Gypsum Board and fire caulk with rated roof ceiling

Purlin - Parallel to Wall

HW-D-0490

1

Gypsum Board and fire caulk with rated roof ceiling

Joints, Cavity Filled Insulation System

Purlin - Inside Wall

HW-D-0926

1

Gypsum Board and fire caulk with rated roof ceiling

Purlin - Perpendicular to Wall

HW-D-0927

1

Gypsum Board and fire caulk with rated roof ceiling

Purlin - Parallel to Wall

HW-D-0928

1

Gypsum Board and fire caulk with rated roof ceiling

Wall Continuity-Joint, Compressed Insulation System

Purlin - Inside Wall

CJ-D-0005

1

Gypsum Board and fire caulk with non-rated roof

Purlin - Perpendicular to Wall

CJ-D-0006

1

Gypsum Board and fire caulk with non-rated roof

Purlin - Parallel to Wall

CJ-D-0007

1

Gypsum Board and fire caulk with non-rated roof

Wall Continuity-Joint, Cavity Filled Insulation System

Purlin - Inside Wall

CJ-D-0029

1

Gypsum board and fire caulk with non-rated roof

Purlin - Perpendicular to Wall

CJ-D-0030

1

Gypsum board and fire caulk with non-rated roof

Purlin - Parallel to Wall

CJ-D-0031

1

Gypsum board and fire caulk with non-rated roof

Fire Resistance 

MBMA also published the Fire Resistance Design Guide for Metal Building Systems. This guide contains the most complete and up-to-date information on the subject of fire resistance for metal building systems. For more information about this guide, please click here.

pdf cover page

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