INSTALLATION RAIL ARRANGEMENT

An installation rail arrangement (10) comprises a plurality of primary structure components (12) and an installation rail (18) including a plurality of connecting portions (20), each connecting portion (20) being connected to an associated primary structure component (12) in order to fasten the installation rail (18) to the plurality of primary structure components (12). A selected pair of a first primary structure component (12a) and an associated first connecting portion (20a) is configured to define a fixed bearing. At least one pair of a second primary structure component (12b) and an associated second connecting portion (20b) is configured to define a floating bearing. The installation rail arrangement (10) further comprises a plurality of load transmission elements (48) each load transmission element (48) being rigidly connected to one of the installation rail (18) and a second primary structure component (12b) and each load transmission element (48) comprising a first contact face (50) adapted to interact with a complementary second contact face (52) provided on the other one of the installation rail (18) and the second primary structure component (12b), in order to transfer loads acting in the direction along the longitudinal axis (L) of the installation rail arrangement (10) from the installation rail (18) to the second primary structure component (12b). In a first operational state of the installation rail arrangement (10), a gap (g) is present between the first and the second contact face (50, 52), in the direction along the longitudinal axis (L) of the installation rail arrangement (10). To the contrary, in a second operational state of the installation rail arrangement (10), the first and the second contact face (50, 52) contact each other.