Bolt Sets (BTSE)

ISODRAFT User Guide

Bolting : Bolt Sets (BTSE)

A BTSE (Bolt Set) element is the administrative element for catalogue component bolting information. It can also be used to store information for the standard bolt holes.

The standard bolt holes are numbered from 1 to NOFF.

It owns BLTP (Bolt Point) elements, which store the bolting information for an individual bolt for a particular type of flange.

BLTP should be used for non standard bolt holes and also specifically for jacking bolts. Existing projects which do not use standard bolts will carry on working without problems.

Catalogue components can have a Bolt Reference (BLRF) array attribute which points to one or more Bolt Set elements. If a Component has the same bolting requirements for each connection, a single entry in the Bolt Reference array will be sufficient. Otherwise, an entry for each P-point which represents a bolted connection is needed.

Bolt Sets have the following attributes:


NOFF	Number of standard bolt holes in the bolt circle.
BDIA	Bolt diameter.
BTHK	Bolt length through flange (flange thickness and facing thickness).
BTYPE	The Bolt type, which is used to select the Bolt from the specification, and also affects how the bolt length is calculated.

Bolt Points have the following attributes:


NUMB	Bolt hole number in the bolt circle.
BDIA	Bolt diameter.
BTHK	Bolt length through flange (flange thickness and facing thickness).
BTYPE	The Bolt type, which is used to select the Bolt from the specification, and also affects how the bolt length is calculated.

The BDIA, BTHK and BTYPE attributes of Bolt Points can all be set from Catalogue Component or Design parameters.