Stc Rated Door Assembly

In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies.

Stc rated door assembly.

Wood doors are available with up to 3 4 hour ratings. The higher stc rating usually comes at a higher cost too. We often purchase doors based on aesthetics price and location interior or exterior. Our designs also interface with the locks and accessory hardware you have chosen for your project.

8 0 x 8 0 pairs. Stc 35 44 lbs to 45 lbs commercial density core bond to core no lead standard stiles and rails. Any unsealed gaps and clearances in door assemblies effectively cancel out the noise reduction benefits of stc rated doors. The second column is the rating of the operable door installed with hardware and gasketing which provides the stc rating of the door assembly.

Seals thresholds and door bottoms when required are shipped with the doors along with the attached stc rating label. Sound transmission class stc rated single door. 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.

Assa abloy offers a complete range of stc rated door assemblies providing a solution for any application. When looking for doors that control sound transmission we need. Insulation will noticeably improve the stc rating of an assembly. Tested in a static inoperable condition to determine the sound transmission through the door.

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. Tested and certified in accordance with ul 10c and ubc 7 2 for doors and ubc 7 4 for windows. Some acoustical assemblies can be used with a standard single or double rabbet frame with welded corners. Metal stud walls perform better than wood stud walls.

Krieger acoustical doors are delivered as complete performance guaranteed acoustical assemblies with seals hinges and threshold included. However for steel doors there is really no limit. Staggered or double stud walls are higher rated than single stud walls. The first column is the rating of the door panel only.

Personnel metal and wood doors can be manufactured up to 4 0 x 8 0 singles. 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. Adding additional layers of drywall can improve the stc rating of an assembly. For example 1 8 clearances around the edges reduce the effective rating of an stc 52 door to stc 21.

Higher acoustical rated assemblies require a custom acoustical frame. Stc ratings for doors.