Finnforest UK


KERTO-S DESIGN VALUES**


BEAMS & LINTELS DESIGN PROPERTIES

TECHNICAL SPECIFICATIONS, STANDARDS AND DIMENSIONS
Kerto-S unites excellent technical performance with ease of use.  Strength, dimensional precision and stability are the essential qualities of Kerto-S.  As a beam it is the perfect choice whenever the requiremetns include long spans and minimal deflection.

Kerto-S is also ideal for use as elements in roofs, floors and walls such as purlins, beams, joists and lintels.





KERTO-S SECTIONAL PROPERTIES

*   Use only as two or more ply beams.
** Allowable stress design values for use with BS5268.

KERTO-S PERMISSIBLE GRADE STRESSES



Permissible stresses are applicable to long term load duration.
For further design information see Kerto BBA Certificate No. 00/3717.

KERTO-S MINIMUM BEARINGS

Notes:

1.    Minimum allowable bearing length is 38mm for end
       bearings and 89mm for intermediate bearings.
       For Masonry Construction see detail see detail M1.

2.   Table values are based on a support with an allowable
      bearing stress of 3.2 N/mm˛. 
      If a lower strength support is used, appropriate bearing
      lengths must be calculated.

3.    Lateral restraint must be provided at end bearings.

KERTO-S PERMISSIBLE UNIFORM LOADS KN/M


Notes:

1.    Beam span is defined as clear span (between support points).

2.    The tabulated values are loads (kN/m) that can be applied to the beam in addition to the self weight of the beam.

3.    Proper bearing must be provided.  Bearing length must be checked for support reaction with the minimum bearing
       table above.

4.    To prevent buckling, lateral restraint is required on the compression edge of Kerto-S beams at 600mm centres or
       closer.  This restraint is normally provided by decking and or framing members.
       Beams that are not laterally supported at 600mm centres or less require special design.