JJJ (Just Joint J type) Metal fittings (Sound absorbing plate reinforcement/repair bracket)
Patent No. 5736263
Patent No. 6121355
NEXCO Maintenance Tohoku Co., Ltd.Recommended mounting number | |
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Test method | NEXCO Test Method 901-2014 |
Recommended mounting number | Sound absorbing board 2m: 3-4 pieces Sound absorbing board 4m: 6-8 pieces |
It has been confirmed that the performance will not deteriorate by loading an equal load of 2.0kN/m2 across the sound insulation wall.
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