Design And Specification For Freight Car/Wagon (Part1)

I. Rolling Stock Requirement
to quarantine the safety, The rolling stock operating in Indonesian Railway shall comply with the following requirements
A. Track Gauge : 1067 mm
B. Minimum Curve :
- On Main Lines : 150 meters
- On Branch lines and Depot/Workshop : 80 meters
C. Maximum Axle Load :
1. Special Lines (South Sumatra) : 18 ton
2. Standard Lines : 14 ton
D. Maximum Gradient : 30 0/00
E. Rolling Stock and Structure Clearance Shall Comply with IRC
CLEARANCE DIAGRAM No. D-2042 (Vehicle Gauge)
 The drawing to explain about “permissible rolling stock out line” and “permissible structure out line “ and their relationship to one another.
 Calculation of limitations include operation
 Presentation of vehicle cross section
 Arrangement of spring and dampers with vertical and lateral clearance
F. Atmosphere Condition
1. Relative humidity max : 90%
2. Ambient temperature : 35 0 C
G. Operation Performance
1. Max load capacity :
• South Sumatra Line : 50 ton + 1,5%
• Standard Line : 30 ton + 1,5%
2. Comparability when coupled with other rolling stock, as follow :
a. Coupler :
1) The knuckle contour shall be in accordance with AAR 10A profile
2) The center line knuckle height shall be 775 +10/-0 mm from top of rail
b. Braking :
The air brake system shall be in accordance with UIC code 540
3. Calculation against derailment
4. Calculation of car stability
5. Location of center of gravity by calculation
H. MAINTENANE
The wagon construction and main component shall be built with easy maintenance.

I. SAFETY ELEMENTS
In order to cover safety operation, furthermore design of wagon shall be accordance with the rule of safety by Indonesian Railway Corporation and the other regulation