BB93 Calculator

BB93 is the Building Bulletin that deals with the acoustic design of schools.

This simple calculator is designed to be used with our Schools "Design Partner Series" brochure - in particular the procedure for calculating Rw on page 8.

Instructions

Simply choose the Source and Receiving rooms and enter the required data. The BB93 Calculator will tell you the required laboratory performance of the Knauf Drywall partition.

Source room:

Receiving room:

Length of partition between Source and Receiving rooms m

Height of partition between Source and Receiving rooms mm

To correctly calculate Rw we need to know the volume of the receiving room. You can do this by specifying the length of the non-partition wall or, for rooms with an unusual shape, the volume in m3.

  • Length of other wall in receiving room
  • Volume of receiving room:

m

Rw = unknown dB (Please enter all criteria)

Use our fast Partition Specifier to select the best partition for this room.