Metal Dek Group®

U. L. Designs

Roof and Floor Dek fire resistance ratings

Floor Dek

Type of Protection Restrained Assembly Rating (hrs) Concrete Cover (Above Dek) Classified Dek Type U.L. Design Number (PDF)
EG: Exposed Grid
EG 1, 1½, 2, 3 2hr-2½”, 3hr-3½” CFD 1.5, 2, 3 D216
GB: Gypsum Board
GB 1½, 2 2½” NW CFD 1.5, 2, 3 D502
CM: Cementitious
CM 1, 1½, 2, 3 2½” LW, NW CFD 2, 3 D703
3 2½” LW, NW CFD 2, 3 D708
1, 1½, 2 2½” LW, NW CFD 1.5, 2, 3 D712
2 2½” LW, NW CFD 1.5, 2, 3 D716
2 2½” NW CFD 2, 3 D730
2 3¼” LW CFD 1.5, 2, 3 D733
1, 1½, 2, 3, 4 2½” LW, NW CFD 1.5, 2, 3 D739
2, 3 2hr-2½”, 3hr-3½” CFD 2, 3 D742
1, 1½, 2, 3 2” LW, NW CFD 2, 3 D743
3, 4 3¼” LW CFD 1.5, 2, 3 D754
2, 3 2½” LW, NW CFD 2, 3 D755
1, 1½, 2, 3 2½” LW, NW CFD 2, 3 D759
2, 3, 4 2½” LW, NW CFD 2, 3 D760
1, 1½, 2, 3, 4 2½” LW, NW CFD 1.5, 2, 3 D767
3 2½” LW, NW CFD 2, 3 D768
2, 3 2hr-2½”, 3hr-3½” CFD 2, 3 D771
3, 4 3¼” LW CFD 1.5, 2 ,3 D777
1, 1½, 2, 3, 4 2½” LW, NW CFD 1.5, 2, 3 D779
SF: Sprayed Fiber
SF 3 2½” LW, NW CFD 2, 3 D816
2 2½” LW, NW CFD 2, 3 D822
2 2½” LW, NW CFD 2, 3 D825
2 3¼” LW CFD 1.5, 2, 3 D826
2, 3 2½” LW, NW CFD 2, 3, NC D831
1, 1½, 2, 3 2½” LW, NW CFD 2, 3, BC, NC D832
2, 3 2½” LW, NW CFD 2, 3 D833
3 2½” NW CFD 3 D836
2 3¼” LW CFD 1.5, 2, 3, BC, NC D840
1, 1½, 2 2½” LW, NW CFD 2, 3 D847
2 2½” LW, NW CFD 1.5, 2, 3 D852
1, 1½, 2, 3, 4 2½” LW, NW CFD 2, 3 D858
1, 1½, 2, 3 2” LW, NW CFD 2, 3 D859
2, 3, 4 3¼” LW CFD 1.5, 2, 3 D860
2 2½” LW, NW CFD 1.5, 2, 3 D861
2 2½” LW, NW CFD 1.5, 2, 3 D870
UP: Unprotected
UP 1 2½”, LW, 3½” NW CFD 1.5, 2, 3 D902, D916, D918, D919, D922, D923, D925, D927
3” LW, 4” NW CFD 1.5, 2, 3
2 3¼” LW, 4½” NW CFD 1.5, 2, 3
3 4¼” LW, 5½” NW CFD 1.5, 2, 3
1 4” NW * Versa-Dek® D904
4¾” NW * Versa-Dek® D917
2 4½” LW, 5¼” NW * Versa-Dek® D928
3 5¼” LW, 6¾” NW * Versa-Dek® D929
2 3¼” LW CFD 2, 3 D906
2 3¼” LW CFD 1.5, 2, 3 D907
2 3¼” LW CFD 1.5, 2, 3 D913
1 2½” LW CFD 1.5, 2, 3 D914
1 2½” LW, 3½” NW CFD 1.5, 2, 3 D929
3” LW, 4” NW CFD 1.5, 2, 3 D929
2 3¼” LW, 4½” NW CFD 1.5, 2, 3 D929
2” LW, 2” NW Versa-Dek® 3.5LS D947
2 2” LW, 2¼” NW
3 2¼” LW, 3¾” NW
HW: Joint Systems
HW 2 4½” NW * Versa-Dek® HW-S-0062
* Concrete cover (depth) refers to total slab thickness.

 

Roof Dek

Type of Protection Restrained Assembly Rating (hrs) Classified Dek Type U.L. Design Number (PDF)
EG: Exposed Grid
EG 1 B, F P211
1 B, F P214
1 S, HD, EHD, SD P216
1 B, F P224
1, 1½ B, F P225
1, 1½ B, F P227
1, 1½ B, F P230
1, 1½ HD, EHD, SD P231
1 B, F P235
2 B, F P237
1 B, F P238
2 S, HD, EHD, SD P241
1 S, HD, EHD, SD P246
1, 1½, 2 S, HD, EHD, SD P251
1 S, HD, EHD, SD P255
1 HD, EHD, SD P264
ML: Metal Lath
ML 3 S, HD, EHD, SD P405
2 S, HD, EHD, SD P407
GB: Gypsum Board
GB 1 EHD, SD P509
CM: Cementitious
CM 1, 1½, 2 B, F, N P701
1, 1½, 2 B, F, N P709
1 B, F, N P710
1, 1½, 2 B, F, N P711
1, 1½, 2, 3 B, F, N P713
1, 1½, 2 B, F, N P714
1, 1½, 2 B, F, N P717
1, 1½, 2, 3 B, F, N P719
1, 1½, 2 B, F, N P725
1, 1½, 2 B, F, N P726
1, 1½, 2, 3 B, F, N P731
1, 1½, 2 B, F, N P734
1 B, F, N P735
1, 1½, 2 B, F, N P736
1, 1½, 2 B, F, N P738
1, 1½, 2 B, F, N P739
1, 1½, 2 B, F, N P740
SF: Sprayed Fiber
SF 1, 1½, 2 B, F, N P801
1, 1½, 2, 3 B, F, N P811
1, 1½ B, F, N P813
1, 1½, 2 B, F, N P815
1, 1½, 2 B, F, N P819
UP: Unprotected
UP 1, 1½, 2 S, HD, EHD, SD, N P902
1, 1½, 2 S, HD, EHD, SD P907
1, 1½, 2 S, HD, EHD, SD P908
1, 1½ HD, EHD, SD P919
1, 1½, 2 HD, EHD, SD P920
1, 1½, 2 S, HD, EHD, SD P921
1, 1½, 2 S, HD, EHD, SD P922
1, 1½, 2 S, HD, EHD, SD P923
1, 1½, 2 S, HD, EHD, SD P924
1, 1½, 2 S, HD, EHD, SD P925
1, 1½, 2 S, HD, EHD, SD P926
1, 1½, 2 S, HD, EHD, SD P927
1, 1½, 2 S, HD, EHD, SD P928
1, 1½, 2 S, HD, EHD, SD P929

 

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