An I-beam comprises a first D-shaped flange and a second D-shaped flange connected by a web. At least one position sensor is provided for detecting individual actual position values of the stop positions independently from one another. The determined flow rate of release agent provides a determination of the quantity of release agent applied to the spreader drum. If the request requires access control and if the data is available in the cache, the system sends an authorization request to an origin server. The touch sensitive member is further configured to send the first electronic signal and the second electronic signal to the processor and the processor is further configured to send a first command to the first subsystem after receiving the first electronic signal and to send a second command to the second subsystem after receiving the second electronic signal.