§ 02
Two beams.
One clear span.
The structure is deliberately simple: a pair of GL28h glulam beams carry a stressed deck of cross joists. No cables, no trusses, no hidden steel. Every load path is visible.
Loading model
Model · RB·KTB·M01
span 24.0 m · width 3.4 m · GL28h · scale 1:50
Exploded view
0%
ASSEMBLED8 LAYERS
Use the slider to explode the assembly into its eight constructive layers.
Design loads · SIA 260/261
Load assumptions
Self-weight (G)
1.65 kN/m²
Glulam + deck + services
Live load (Qk)
5.00 kN/m²
Pedestrian, SIA 261
Snow (sk)
2.40 kN/m²
Zone 2, St. Gallen
Wind (qref)
0.90 kN/m²
Cat. II terrain
Service vehicle
20 kN axle
Maintenance only
Verifications · indicative
Utilisation
ULS bending
η = 0.71
GL28h adequate at mid-span
ULS shear
η = 0.42
Stirrups not required
SLS deflection
L/420
Within SIA 260 limits
Vibration
f₁ = 4.8 Hz
Above pedestrian range
Fire
REI 30
Charring 0.65 mm/min
Connections
Joinery
Beam-to-abutment via concealed slotted-in steel plates with self-drilling dowels. Every panel is a removable unit — no element of the bridge is welded shut.