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Published byMartha Hannis Modified about 1 year ago

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T3. DESIGN OF TIMBER BEAM Timber framed structure T3. Design of timber beam page 1. Beam: linear member subjected to bending and shear (N=0). Example: Check of beam G1, design secondary girder spacing. Floor plan

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I. Design of beam G1 I.1. Geometry, model, loads I.1.1. Model, Geometry: l eff = I.1.2. Loads: floor Dead load: self-weight Floor layers: 2 cm glued ceramic 6 cm reinforced concrete subbase 1 layer PE foil 2 cm TDP sound insulating layer 2.2 cm OSB deck 50 150 secondary girder (spacing: 0.8m) 5 cm floating layer 1.9 cm boarding 1 layer plasterboard Σ page 2. Cross-sectional Data: T3. Design of timber beam

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Load on the beam G1: page 3. T3. Design of timber beam I. 2. Calculation of internal forces

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page 4. Study Aid for Timber Structures (ST) T3. Design of timber beam (ST) For all strength values: Here: Grade of material: GL28h (ST) medium term load, service class 1. k mod = glued laminated timber M = Design value of bending strength: Design value of shear strength:

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T3. gyakorlat: Fa gerenda méretezése page 5. Always elastic!

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page 6. allowed deflection: I.5. Serviceability limit state: Deflection Creep has to be taken into account! (ST) T3. Design of timber beam

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Cross-sectional data: board II. Design of secondary girder F1 Design spacing of secondary girders considering the size of OSB-board! t=? Possible spacing: page 7.

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page 8. T3. Design of timber beam II.3.2. Shear II.4. Stability analysis -lateral-torsional buckling: II.5. Serviceability limit state: Deformation analysis II.3.1. Bending design: (elastic analysis)

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