LVL Handbook EUROPE

2. LVL STRUCTURES IN FLOORS, WALLS, ROOFS AND IN SPECIAL APPLICATIONS

2.3.3 Purlins

In hall constructions LVL-P purlins are suitable secondary

structures for wooden or other main frames. Since LVL is avail-

able in long lengths, multiple span purlins are structurally effi-

cient and fast to install. However, purlins often also act as sup-

ports against lateral torsional buckling of the main frames or

beams setting capacity requirements for connection detailing.

Therefore single-span purlins supported with hangers from the

sides of rafter beams are recommended for 3-pin frames.

With the exception of flat roofs, purlins are biaxially load-

ed. As LVL purlins are thin, they need to be side supported in

the weaker direction.

Figure 2.35.

Single-span and multiple span purlins for hall construction.

LVL Handbook Europe