Curved Beams

• 20-40% lighter than plain beams
• Fast and economical curving

No other structural member produces curved roofs as economically as cellular beams.

This is due to a new development which allows cellular beams to be curved as part of the normal production process at virtually no extra cost. (See Fig. 11)

Span Range

The economic span range is similar to that for straight roof beams except that the low curving cost makes cellular beams economical also at very short spans. (See Fig. 12)

While most applications are simply-supported, continuous frame construction can be adopted for longer spans. (See Fig. 13)

• Shallower than curved lattice beams
• Rapid production

Achievable Radii

The achievable radii is not determined by the overall span, but by the length of the pieces that make up the full length. (See Fig. 14)

The minimum radius which can be achieved in a single length can be calculated by applying the following equation:

Achievable Radius = Chord Length² / 4

z.B. 25² / 4 = 156metres

A much tighter radius can be achieved by curving in two pieces. (See Fig. 15)

Achievable Radius = Chord Length² / 4

z.B. 12,5² / 4 = 39metres

The equation for achievable radii is for indicative use only. Please consult the technical department for specific applications.

Small Radius Curving

There are radius/length combinations which can not be achieved during the normal cellular beam production process. In these cases the beams can still be curved, in conjunction with a specialist section-bending company.