Stc Rated Door Assembly

Using the latest sound absorbing techniques and materials republic s engineering professionals have developed a superior sound transmission class stc rated assembly consisting of a noticeably lighter weight door approximately 25 less than current market products along with standard rabbeted hollow metal frames.

Stc rated door assembly.

Additionally cam lift hinges and an aluminum threshold are included with high stc rated assemblies. Stc 35 44 lbs to 45 lbs commercial density core bond to core no lead standard stiles and rails. Our designs also interface with the locks and accessory hardware you have chosen for your project. Tested and certified in accordance with ul 10c and ubc 7 2 for doors and ubc 7 4 for windows.

However for steel doors there is really no limit. Assa abloy offers a complete range of stc rated door assemblies providing a solution for any application. Seals thresholds and door bottoms when required are shipped with the doors along with the attached stc rating label. For example 1 8 clearances around the edges reduce the effective rating of an stc 52 door to stc 21.

The second column is the rating of the operable door installed with hardware and gasketing which provides the stc rating of the door assembly. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. Stc is calculated by taking the transmission loss tl values tested at 16 standard frequencies over the range of 125 hz to 4000 hz and plotted on a graph. Adding additional layers of drywall can improve the stc rating of an assembly.

Up to 4 0 x 8 0 singles and 8 0 x 8 0 pairs. Sound transmission class stc rated single door. Metal stud walls perform better than wood stud walls. Insulation will noticeably improve the stc rating of an assembly.

Door panels or assemblies with lower ratings are less effective at controlling sound movement and cost less. 3 hour fire rating by underwriters laboratories ul and its fire ratings vary with stc rating wood doors available in various species stains and finishes. The higher stc rating usually comes at a higher cost too. Staggered or double stud walls are higher rated than single stud walls.

Krieger acoustical doors are delivered as complete performance guaranteed acoustical assemblies with seals hinges and threshold included. We often purchase doors based on aesthetics price and location interior or exterior. The first column is the rating of the door panel only. Tested in a static inoperable condition to determine the sound transmission through the door.

Higher acoustical rated assemblies require a custom acoustical frame. Wood doors are available with up to 3 4 hour ratings. Some acoustical assemblies can be used with a standard single or double rabbet frame with welded corners. 8 0 x 8 0 pairs.

Any unsealed gaps and clearances in door assemblies effectively cancel out the noise reduction benefits of stc rated doors. Personnel metal and wood doors can be manufactured up to 4 0 x 8 0 singles.