
Costinel C. CristescuIndependent Researcher
Costinel C. Cristescu
Retired graduate forest engineer
About
9
Publications
22,018
Reads
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6
Citations
Introduction
If by my work I helped, contribute and will contribute at the world progress with an equivalent of an angstroem step I'll die peacefully.
Additional affiliations
January 1986 - December 1991

Position
- Determination of hydrological parameters on surface runoff, sedimentation and sediment transport in small torrential catchments with varying degrees of afforestation
Description
- - discharge and suspended sediment transport from snow melt; - hydrological data processing software - average infiltration during floods in small catchments.
January 1984 - December 1986

Position
- Development of new constructive solutions for hydraulic structures used in torrential channel management. Fishery and energetic capitalization of these hydraulic works and monitoring of their behavior under torrential hydraulics.
Description
- - multiple arch and buttress check dams; - small hydro power solutions adapted to sills and check dams; - two new fish passes solutions
Education
October 2005 - October 2010
October 1971 - July 1976
Publications
Publications (9)
Starting from the finding that, on one hand, the intensification of disturbances in mountain catchments involves impacts both on headwater streams themselves and downstream river networks and, on the other hand, the transformation of forest areas both in their extent and ecosystem structure and state bring changes to and place stresses on the strea...
The model explains the runoff hydrographs and sediment concetrantion curves generated by the melting of snow pack laying on the surface of a catchment, if the daily temperature curves and the snow-water equivalents of snow pack are known. Both the daily runoff hydrograph and the sediment concentration curve made by the snow melting may be reconstru...
There are presented the research works carried out during a period of 8...10 years in 7 torrential watersheds with areas between 154 and 713 ha, covered by forests in a percentage of 16...98%; the watersheds mean slope ranging from 22 to 51%. The petrographic under layer consist of marl, clay and sandstone deposits (4 watersheds), cristaline schist...
Questions
Questions (3)
The check dams used as torrent control works have some characteristics - in my opinion - which are neither quite those of retention dams (hydraulic structures) nor quite those of retaining walls. So, taking into account their behavior over their period of existence (50 to 100 years), a short period the check dam works as a hydraulic structure subject of hydrostatic/hydrodynamic pressures. Then, after the upstream sector is completely filled with sediments, it works as retaining wall, perodically submited to floods. I put this question because, verifying such a structure using Eurocode 7 I obtain larger dimensions than using the old global factors of safety. And a more than 100 years of experience shows that economically the last approach is better.
According with the experience and technical regulations in the European countries, are them subject of Eurocode 7 or of some special regulations?