2.1.1 The TLA procedure is an optional procedure and is applied on a voluntary
basis.
2.1.2 The
ship’s structure is examined using a total load approach and
stress analysis techniques.
2.1.3 The
total load approach applies static, hydrodynamic and inertial load
components to the structure making due allowance for the local structural
configuration. These load components include global and local considerations.
The approach includes load combination factors which enable the total
design loads to take account of the appropriate phase relationships
between the various load parameters, e.g. relative vertical motion
and global bending moment.
2.1.4 The
stress analysis techniques predict the total stresses acting in the
structure as a consequence of the total loads. These techniques cover
the assessment of stresses in either primary/secondary plating systems
or grillage systems.
2.1.5 The
resulting stresses are then checked against a set of design factors,
which include stress, deflection and buckling requirements.
2.1.6 Due
to the nature of the TLA approach it is possible to achieve
the following:
-
Allow the designer
to examine different loading scenarios
-
Optimise the
structure towards particular design solutions.