The mecahnical strength properties of door cores only have little influence on the stability of the finished door.
More significant factors are:
The design of an acoustic door requires appropriate weight as well as low bending strength of the door. Therefore low bending strength and high compression resistance should be aimed at.
Referring fire performance high bending strength of all wooden materials often results in high distortion.
|Thick: 32mm||RT / RK1||RD||VL||VV||HVA||dimension|
|- parallel to the manufactur. direction||1,1||1,2||1,5||1,8||1,8||N/mm²|
|- parallel to the manufactur. direction||120||120||110||140||170||N/mm²|
|Tensile Strength |
|σzb||> 0,5||>0,6||> 0,6||>0,7||>0,8||N/mm²|
|max. limit without considerable deformation||10||12||16||18||22||bar|
|- density solid||520||525||490||600||650||kg/m3VSP|
The figures mentioned above are average figures taken from various measurements.
They are to be understood as approximate figures as they are only of secondary importance for door manufacturing.
They are not worked out continuously.
The figures are taken ´dry´ and at room temperature.
The figures mentioned above have to be reduced in case of :