Number of Flanges (Laminate Type for BS7159 & UKOOA) - CAESAR II - Help

CAESAR II Users Guide (2019 Service Pack 1)

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CAESAR II Version
11.0 (2019)

Sets the number of rigid fittings that are attached to the end of the bend preventing the ovalization of the bend. Ovalization provides for a large amount of the flexibility of the bend.

BS-806 (the British Power Piping Code) recommends that flanges or valves (or any rigid cross-sectional fitting) that are within two diameters of the ending weld point of the bend be considered as attached to the end of the bend for this calculation.

Attachments to the end of the bend are considered to affect about 30ยบ of the arc of the bend. For the BS 7159 code, this entry refers to the material laminate type and must be of the following values:

1

All chopped strand mat (CSM) construction with internal and external surface tissue reinforced layer.

2

Chopped strand mat (CSM) and woven roving (WR) construction with internal and external surface tissue reinforced layer.

3

Chopped strand mat (CSM) and multi-filament roving construction with internal and external surface tissue reinforced layer.

Laminate type affects the calculation of flexibility factors and stress intensification factors for the BS 7159 code only.