Castor Chair Test Castor chairs are particularly damaging, and the ragged holes they wear in floor coverings can represent a tripping hazard. The results of this test should be an essential part of the office carpet specification. The test rig rolls a three-castored chair, carrying a weight of 90kg, across the carpet. Two samples are [...]

Build an Acoustic Audio Room is not a complicated work. We can do it ourselves. And this place is an important place for audiophiles. Commonly acoustic audio room built for home entertainment or karaoke room. When you play a great audio system in your living room, you will not listen to a great sound out [...]