DEN A320 DEP EXPERIENCED TURB INCIDENT.

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DURING PREFLT BRIEF WITH DISPATCHER; WE DISCUSSED NUMEROUS RPTS OF SEVERE TURB W AND N OF DEN. DISPATCH FILED US ROCKIE 3 TO AVOID AREA; WHICH I AGREED VERY PRUDENT. HE SAID ATC WAS LESS THAN PLEASED; AND WANTED US OVER LARAME ON YELLOW 3; BUT THAT WOULD TAKE US INTO SEVERE TURB AREA. ARMED WITH THAT KNOWLEDGE DEPARTED GATE WITH PDC CLRLY STATING ROCKIE 3 DEP DEN TWR LAUNCHED US OFF RWY 25 AND AT HDOF TO DEN DEP; WE WERE GIVEN N HDG. AFTER SHORT TIME; I HAD FO QUERY ATC FOR OUR TURN BACK FOR W DEP. WHAT I GOT WAS AN ARGUMENT FROM ATC THAT I SHOULD HAVE VERIFIED MY CLRNC BEFORE TKOF. I DID. HE WENT OFF-LINE FOR A SHORT TIME; AND ACQUIESCED. GAVE US S HDG AND THEN DIRECT RKS. I REFUSED; TOLD HIM THAT WOULD DRIVE US RIGHT THROUGH AREA I WAS TRYING TO AVOID. HANDED OFF TO NEXT CTLR; AND GIVEN DIRECT EKR; WHICH DUE TO OUR EXTENDED TRACK N; WOULD STILL TAKE US INTO TURBULENT AREA. I ASKED FOR FURTHER S TO GET BETTER ANGLE; FOR DUE W HDG TO EKR. ATC SAID NO RPTS THAT AREA REGARDING TURB; AND THEY HAD TFC TO CONTEND WITH. THEY WERE REALLY PUSHING US TO GO N; AND LESS THAN PLEASED AT OUR ATTEMPT TO AVOID THE AREA. AFTER WHAT I CALL BADGERING TO GO EKR; I ACCEPTED TURN AND CLB. BOTH DEP CTLRS WERE PUSHING HARD FOR US TO GO N AND WERE OBVIOUSLY NOT FOND OF OUR PLAN. I HAD FLT ATTENDANTS SEATED. ACFT SPD 15 KTS BELOW TURBULENT AIR PENETRATION. I PLACED IGNITERS ON AS A PRECAUTION. AT 29500; SUDDEN AND SEVERE TURB ENCOUNTERED. I WAS HAND FLYING ACFT; AND IMMEDIATELY HAD A HAND FULL. I TOLD FO TO GET FL280 NOW! GOT OUT OF TURB AT FL288. NOTIFIED ATC AND DISPATCH OF LOCATION AND SEVERITY. AS PRUDENT JUDGEMENT; I NOTIFIED MAINT FOR AN ACFT INSPECTION UPON ARR. HAD I GONE INTO AREA ATC WANTED; I WOULD HAVE ENCOUNTERED SEVERE TURB; AND WOULD NOT HAVE HAD THE ESCAPE PATH TO THE S I HAD. ATC WAS BELLIGERENT AND WANTED US TO GO N ONLY TO EXPEDITE THEIR TFC FLOW. I HAD A PLAN; AND I MADE SURE MY PEOPLE WERE PREPARED AND SAFE. I HAD MADE A REINFORCING PA TO KEEP PAX IN SEAT BELTS A VERY SHORT TIME BEFORE ENCOUNTER. MY FLT ATTENDANTS WERE WELL BRIEFED AND PREPARED BY ME. ONE COMPLAINED OF A SORE SHOULDER FROM WRENCHING AGAINST SEATBELT SHOULDER STRAP DURING TURB ENCOUNTER. ALL ELSE OK. MAINT FOUND ACFT IN GOOD ORDER; AND NO OVERSTRESS. COMPUTER'S RPT INDICATED NEED FOR VISUAL INSPECTION ONLY. ATC SHOULD LISTEN TO EXPERIENCE AND REASON FROM FLT CREWS. IN PARTICULAR; PERTAINING TO WX AND TURB. I KNOW THERE NEEDS TO BE FLOW MGMNT; BUT NOT WHEN SEVERE TURB IS RPTED BY DC10'S UNABLE TO MAINTAIN ALT!