Ceiling beam cross-sections for double span beams

Ceiling beam cross-sections, C24 (S10), double span beams, e = 50.0 cm for SC 1 and 2 with medium load durations

 

Ceiling beam cross-sections, C24 (S10), double span beams, e = 62.5 cm for SC 1 and 2 with medium load durations

 

Ceiling beam cross-sections, C24 (S10), double span beams, e = 75.0 cm for SC 1 and 2 with medium load durations

 

Ceiling beam cross-sections, C24 (S10), double span beams, e = 83.3 cm for SC 1 and 2 with medium load durations

Footnotes to tables:

¹⁾  Bold: Preferred cross-section KVH^®, Duobalken^® or Triobalken^® beams
Italics: Cross-section not available (it is recommended that glued laminated timber GL24 be used)

²⁾ Action:

g_k:    Characteristic permanent action (dead weight) in accordance with DIN 1055-1: 2002-06
q_k,N:  Characteristic variable action (live loads) in accordance with DIN 1055-3: 2006-03

³⁾ Dimensioning criteria (left or right column)

A   Design bending moment M_R,d and design shear force V_R,d
     Final deflection in the characteristic dimensioning situation: w_Q,inst ≤ l/300 und w_fin – w_G,inst ≤ l/200
     Deflection in the quasi-permanent dimensioning situation w_fin – w₀ ≤ l/200

B    Limitation of deflection to  w = w_G,inst + Ψ₂ × w_Q,inst ≤ 6 mm from quasi-permanent
      action as an additional criterion for the simplified vibration verification. A more exact
      vibration verification is recommended for individual cases.