civilperson, thanks for your reply. I understand that but my problem is evaluating it in HEC-RAS. I am not sure how to model and evaluate the two different material culverts (upstream CSP and downstrean concrete box) in HEC-RAS. I am thinking of taking a cross-section at the junction of the two...
I am evaluating an existing CSP under a highway that ties into a concrete box culvert (50m of CSP while 55m of Conc. box). The suggestion is to line the existing CSP (which is in a pretty bad condition) and provide a manhole at the tie-up to improve the hydraulics. If the lininng affects the...
