Fire insulation in construction law

Floor, ceiling and roof drains are always the starting point of any drainage system and are considered an integral part of such a system according to DIN EN 12056 and DIN 1986-100. For that reason, they must also comply with the requirements of the Conduit Systems Directive.

• The fire behaviour of materials, e.g. for pipelines (drains), pipe sleeves, thermal insulation and pipe jackets, is defined by categorisation in set material classes (A1/A2/B1/B2) based on tests carried out according to DIN 4102-1.
• Highly flammable materials must not be used for the field of house technology.
• The basic standard for fire insulation DIN 4102 comprises 18 parts and describes the entire range of fire behaviour of materials and components, and how they are tested. It regulates, for instance, the execution principles of sealing measures, roofing, pipelines and pipe sleeves and the fire behaviour of materials. Given that a component (wall, floor or ceiling construction) comprises multiple individual materials, it is imperative that the individual materials are broken down into non-combustible and combustible. Certification must be provided for the respective categorisation and classification, e.g.:
  
  • Fire trials and testing
  • Compilation of a test report
  • Issue of a General Building Supervisory Authority Test Certificate (aBP), a General Building Approval (abZ) or a General Design Certificate (aBG)
  • By classification in DIN 4102 – Part 4
    




After completion of a fire trial by an authorised testing institute (e.g. MPA-NRW etc.), the material must be assigned to the respective material class and its usability verifiably documented by an abP, abZ or aBG.

Physical structures and their systems and equipment, in particular when taking into account:

• the flammability of the materials,
• the fire resistance duration of the components, expressed in fire resistance classes,
• the leak tightness of the seals on openings,
• the arrangement of escape routes - must have properties which prevent the outbreak of fire and the spread of fire and smoke. Materials which are highly flammable after processing or installation must not be used for the erection or modification of physical structures and other systems and facilities.

• The Conduit Systems Directive is an essential guideline for the planning and installation of conduits and drains for preventive fire insulation. It has been introduced as construction legislation in almost all federal states. It is thus the implementation ordinance for the federal states. The LAR describes the requirements of conduits, including fastenings and insulating materials, in conjunction with installation in emergency escape routes.
• The LAR aims to improve preventive fire insulation in conduit systems and help all involved in the construction with planning and implementation in order to erect the building to an appropriate and compatible safety standard. It is applied for all building types which are regulated in the Regional Building Codes LBO.
• The LAR defines the execution principles for the penetration of a vertical pipe or a floor/roof drain through a fire-resistant wall/ceiling. In this case, wall and/or ceiling feedthroughs must be in R 30/60/90/120 quality.
• The requirements of the LAR must be met for both non-combustible and combustible drainage pipes.