3.2.7.2 . Tracing of switches , switch connections and switch streets |
113 |
1 . Switches |
113 |
2 . Tracing of switch connections between two tracks |
114 |
3 . Switch streets |
115 |
4 . Modern solutions in tracing of switches and stations |
117 |
5 . Accuracy in the tracing of stations |
118 |
6 . Tracing during doubling and electrification of railway lines |
119 |
3.2.8 . Maintenance of railway lines |
121 |
3.2.8.1 . General for maintenance |
121 |
3.2.8.2 . Design of railway optimization in plan and profile |
122 |
3.2.8.3 . Coordination and kilometrage of the design axis of the railway line |
123 |
3.2.8.4 . Benchmarking |
123 |
3.2.8.5 . Data base and information system |
125 |
1 . Data base |
125 |
2 . Information system – GIS |
126 |
2.1 . General data |
126 |
2.2 . Realization of survey , processing and GIS |
127 |
2.2.1 . Object of survey |
127 |
2.2.2 . Organization of geodetic and aerial survey |
128 |
2.2.3 . Preparation for implementing the aerial photo survey |
128 |
2.2.4 . Processing of the recorded aerial photo images |
129 |
3.2.9 . References to 3.2 |
132 |
3.3 . GEODETIC WORKS IN THE DESIGN , TRACING , | |
CONSTRUCTION , RECONSTRUCTION , CAPITAL REPAIR AND | |
CONTROL OF ROADS IN BULGARIA |
134 |
3.3.1 . Basic provisions |
134 |
3.3.2 . LEGAL BASIS , CLASSIFICATION AND ROAD ELEMENTS |
134 |
3.3.2.1 . Legal basis |
134 |
3.3.2.2 . Road subdivision and classification |
135 |
3.3.2.3 . Road elements |
136 |
3.3.2.4 . General provisions and requirements for road construction and operation | |
in the regulatory documents |
136 |
1 . ROADS ACT |
136 |
1.1 . Some basic , specific concepts of the Roads Act |
136 |
1.2 . General provisions |
138 |
1.3 . Construction , repair , maintenance and management of road infrastructure safet 139 | |
1.4 . Expropriation and temporary use of real estates for roads |
140 |
1.5 . Financing |
141 |
2 . REGULATIONS FOR IMPLEMENTING THE ROADS ACT |
140 |
2.1 . Basic elements of the road |
140 |
2.2 . Adjacent areas |
141 |
2.3 . Road planning , construction and maintenance |
141 |
3 . NOTIFIED ORDINANCE FOR ROAD DESIGN |
141 |
3.1 . General for the ordinance |
141 |
3.2 . General provisions |
143 |
3.3 . Road alignment |
143 |
3.4 . Road design elements |
144 |
3.4.1 . General requirements |
144 |
3.4.2 . Situation |
145 |
3.4.3 . Longitudinal profile |
146 |