Timber joist floor slabs

The codes implemented for the design and check of the timber joist floor slabs and beams are:

• CTE-DB -SE-M (Spain)
• Eurocode 5
• Eurocode 5 France
• Eurocode 5 Belgium
• NBR 7190:1997 (Brazil)
  

To adapt the program to the current market, timber sections have been created, distinguishing between sawn timber and laminated timber, and including the DUO/TRIO series, which are currently very much in use.

The sections that make up the timber joists are designed for simple bending, because due to the rigid diaphragm hypothesis, axial forces and forces in the plane of the floor slab are not considered.

The deflection checks for timber joists are obtained considering the deflection limits for the joist defined by users and the active deflection and long-term deflection.

CYPECAD also carries out a fire resistance check for timber beams using the “Fire resistance check” module.

For CYPECAD to be able to analyse and design joist floor slabs, the user licence must include, as well as CYPECAD, the “Timber joist floor slabs” and “Joist floor slabs (generic concrete beams)” modules. If, users also wish to check the fire resistance of these elements, they must also hold the “Fire resistance check” module permits.

More information on the introduction, analysis and design of timber joist floor slabs in CYPECAD can be found on the “Timber joist floor slabs” webpage.