Normal engineering requirements apply to FRC™ suspended pipelines for the restraint of out-of-balance forces generated by internal pressure at changes in pipeline direction.

Unless the pipeline system is close-coupled to the structure, it is good practice to have a lateral brace at approximately 8m intervals (every second joint). If the hanging distance is large, lateral bracing may be required at 4m intervals.

At changes in direction, (see table) need to be transferred to the structures.

The methods of bracing vary widely depending on pipeline location, working or test pressure of the pipeline and the type of structure. Solid bracing, or tubular bracing should be used if compression loads need to be transferred to the structure. Threaded rod may be used where tensile loads need to be transferred to the structure. However, it should not be used to transfer compression loads due to the possibility of deflection. Where several fittings are located near each other (particularly bends), extreme care should be exercised that all forces are transferred to the structure.

If doubt exists as to the adequacy of a particular bracing requirement or if more detailed information is required, refer to a reputable bracing manufacturer.

Note: Thrusts are for 5m head at the fitting, loads for other head values can be proportioned linearly.
The above thrusts have been calculated ignoring any velocity head and have generally been rounded to the nearest whole numbers.
All dimensions are nominal and may change without notice.

Horizontal
90° bend

Vertical
90° bend

Horizontal
junction

Lateral brace