Deflection checks (Composite beams: BS 5950)
Tekla Structural Designer calculates relative deflections. (See: Deflection checks)
The following deflections are calculated for the loads specified in the construction stage load combination:
- the dead load deflections i.e. those due to the beam self weight, the Slab Wet loads and any other included dead loads,
- the imposed load deflections i.e. those due to construction live loads,
- the total load deflection i.e. the sum of the previous items.
The loads are taken as acting on the steel beam alone.
The “Service Factor” (default 1.0), specified against each loadcase in the construction stage combination is applied when calculating the above deflections.
If requested by the user, the total load deflection is compared with either a span-over limit or an absolute value The initial default limit is span/200.
Note: Adjustment to deflections. If
web openings have been defined, the calculated deflections are adjusted
accordingly. See: Web openings