structural works./ bbz_ve51_kgr 440/450./ the present project is the new construction of an extension for training purposes of the vocational training center for chemistry in the treptow-köpenick district, adlershof district in 1 2489 berlin. due to the increased number of trainees in the bbz chemie and the resulting creation of a new phl 2 laboratory, there is also an increased need for a classroom as a so-called servant space in the training and needs program. the necessary reorganization or restructuring of the existing structure means that two classrooms are no longer available. these need to maintain a regulated and comprehensive teaching operations to be recreated elsewhere. the construction site is delimited by the space required for fire protection reasons of 5 m to the outer walls of the existing building (fire flashover), the existing driveway on the north-east edge of the property and the building stock worthy of protection. t he distance to the stock is according to § 86 bauo bin at least 3m in front of the rising outer walls, therefore a total of at least . 6m between the extension and the existing building. the building has one storey above ground. i n this floor is also the technical room of the extension building. t he development of electrotechnical and communications technology the residential buildings are installed via the main building (existing building). the three classrooms are to be accessed via a shared corridor area. you should naturally lighted and ventilated. a timber construction is planned.