Citation X (C750)
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 90; Flight Crew Total 16000; Flight Crew Type 450
Other / Unknown
No Specific Anomaly Occurred All Types
General None Reported / Taken
Airport
I have flown professionally for a number of years and have never experienced conditions as bad as the intersection of Runway 18L and 23 at CLT. There is a dip on both sides of 18L that is so severe that we are almost launched into the air when we reach the dip. The main struts must be almost fully extended because once we settle back onto the runway our struts are fully compressed and we normally remark about how well built the main tires must be to keep from popping. We were told by the Tower that these trenches were there for water channeling.  I've never been to an airport that channeled water in this manner. This system can't be good for an airframe.
The reporter clarified that he was infact departing Runway 18L and that his aircraft does not accelerate as rapidly as one might expect; attaining about 80 knots as it crosses Runway 23.
CE750 Captain describes the dips in Runway 18L as it crosses Runway 23 as likely to be over stressing the airframe.