Presentation on theme: "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:"— Presentation transcript:
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
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
Load on the beam G1: page 3. T3. Design of timber beam I. 2. Calculation of internal forces
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:
T3. gyakorlat: Fa gerenda méretezése page 5. Always elastic!
page 6. allowed deflection: I.5. Serviceability limit state: Deflection Creep has to be taken into account! (ST) T3. Design of timber beam
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.