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 |
| 1½ | 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 | |
| 1½ | 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 | |
| 1½ | 3” LW, 4” NW | CFD 1.5, 2, 3 | D929 | |
| 2 | 3¼” LW, 4½” NW | CFD 1.5, 2, 3 | D929 | |
| 1½ | 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 | |
Product Masterspec ™
Download Steel Dek Specifications
Prepare project specification documents using information from Metal Dek Group® products.
MS Word (119k)
Word Perfect (230k)
Ask the Dek Design Team ®
Let Us Help
The Dek Design Team® is a full-service technical group dedicated to the engineering, design, and support of Metal Dek Group® products and services in application. More...
Product Profile
Deep Dek® Composite
An engineered solution™ with spans up to 35 feet that saves time and money. More