Preparatory planning

The current shooting range guidelines play an important role during the planning of new builds or conversion work on indoor shooting ranges. It is mandatory for an expert on shooting ranges to oversee planning, implementation and approval of the shooting range. Paragraph 5 of the shooting range guidelines “Enclosed shooting ranges” contains all safety-relevant principles. Particular consideration should be given to the following points:

Preventive fire protection

In accordance with the shooting range guidelines the whole area of the indoor shooting range is to be formed as a fire compartment. With that objective in mind the wall and ceiling cladding must be at least fire inhibiting (building material class B1 to DIN 4102 Part 1) or better non-combustible (building material class A).

Sound absorption

Sound absorbing materials are unavoidable for shooting in enclosed shooting ranges. Without such measures a reverberation effect would be created that would make it practically impossible to use these rooms.

Surfaces as smooth as possible

Due to the possibility of dust particles being deposited and increased difficulty cleaning, wall cladding with profiled surfaces are not suitable for indoor shooting ranges.

Easy installation systems

It must be possible to replace sound absorbing elements without involving excessive time and costs once they are damaged or shot to pieces. Consequently, simple installation systems are to be preferred.

Narrow wall gap

The wall and ceiling cladding should be mounted with a close clearance to the enclosing parts, because as a rule this increases the efficacy of the cladding and it can also reliably withstand being struck by rebounding and ricocheting bullets.

Colour design

The colour of the visible surfaces of the sound absorbing wall cladding should be Pastel green (e.g., RAL 6019) or Agate grey (e.g., RAL 7038).

Construction with Mikropor® G A2 acoustic panel and aluminium hat channels LAH 65 and LAH 59 from Lahnau Akustik GmbH

• Different installation systems are possible
• From visible screw connections to hanging systems through to different hat channel versions ( e. g., LAH 65 or LAH 59 according to Report no.01/2010)
• Also available with a coat of mineral wool in hollow spaces (see acoustics curve in the chapter Acoustics tests certificates). For detailed information please contact the responsible company representative or contact our company directly.

Mikropor ® G A2 in indoor shooting ranges – assessment

In accordance with the general building inspectorate approval Mikropor® G is fire inhibiting or non-combustible to DIN 4102, Part 1, Building material class B1 or A2. As a consequence the material can be used for interior finishing of enclosed shooting ranges. Sound absorption measurements to DIN ISO 354 certify that the material has good sound absorbing properties and reduces the existing sound pressure level in a room as a consequence.

According to Assessment report No. 01/2010 the hat channels LAH 65 and LAH 59 are excellently suitable for installing acoustic panels Mikropor® G A2 in indoor shooting ranges. Based on paragraph 5.5.3.2 of the indoor shooting range guidelines the material fulfils the specified requirements. The surface of the material can easily be cleaned using a vacuum cleaner.

It is as equally possible to wipe it clean with a damp cloth as it is to brush it clean with a horsehair brush. All installation versions are reversible. There are no limits on the choice of colours. The Mikropor® G acoustic panel can be supplied in any desired colour tone.

Conclusion: The combination of resistance to mechanical stress loads as well as the elasticity of the material Mikropor® G and as attested in Report nos. 04/2007 and 01/2010, the Mikropor® G acoustic panel and hat channels LAH 65 and LAH 59 fulfil the requirements of the shooting range guidelines.