Floor and roof element
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LIGNATUR elements feature very rigid load-­ bearing characteristics. The construction height required, based on the load, is comparable to that of a concrete floor. LIGNATUR box elements (LKE) are available from 120 to 320mm in height, surface elements (LFE) from 90 to 480mm in height. You can easily predimension your elements with the following diagrams and tables or contact our team. We are happy to assist with the dimensioning. LIGNATUR elements are CE-labelled and can be calculated according to the European Technical Approval ETA-11 / 0137, the Eurocode and the national standards....

Preliminary statics Box elements or surface elements deflection w = I / 450 for floors in residential developments, commercial developments and flat roofs with a pitch of up to 5° • imposed load q + surcharge q N A • span l • element dead load accounted for in diagrams load qN l • element dead load and surcharge qA = 1.25kN/m2 accounted for in diagrams • span Box elements or surface elements Box elements or surface elements load s + surcharge qA l • element dead load accounted for in diagrams

Statics of floor The adjacent tables show which element height h gives a span I. All floor systems shown fulfil the requirements for load-bearing capacity, service­ ability and proof of vibration. w l deflection w (qd) = l / 350 • q = (1 + k ) ∙ (g + ѱ ∙ q ) d def k 1 k • creep coefficient k = 0.6 def • permanent load g = g + q k A • dead load incl. fill g (data in tables for h = 200mm) • load of floor construction q A • imposed load q = q k N • housing q = 2kN/m2, ѱ = 0.5 N 1 • education q = 3kN/m2, ѱ = 0.7 N 1 1. natural frequency f1 (gk + 0.3 ∙ qk) ≥ 8.0Hz or 8.0Hz > f1 (gk + 0.3 ∙ qk) ≥...

Statics of roof The adjacent tables show which element height h gives a span I. All roof systems shown fulfil the requirements for load-bearing capacity and ­serviceability. w l deflection w (qd) = l / 350 • q = (1 + k ) ∙ (g + ѱ ∙ q ) d def k 1 k • creep coefficient k = 0.6 def • permanent load g = g + q k A • dead weight of element g (data shown in tables for h = 200mm) • load roof structure q A • imposed load q = µ ∙ s k K • coefficient of roof shape µ = 0.8 • snow load s = 1kN/m2, ѱ = 0.5 K 1 • snow load s = 3kN/m2, ѱ = 0.75 K 1 I LIGNATUR surface element (LFE) II LFE with acoustics...

Dead load of element Please choose the dead load of the selected e ­ lement according to the tables. * Splitt * Splitt Example: A LIGNATUR surface element with height 220mm (41kg/m2), with a fire resistance REI60 (13kg/m2), filled with chippings (50kg/m2) and a sound absorber (4kg/m2) weighs 108kg/m2 in total. * chippings ** sound absorber

Characteristic ­properties The strength characteristics and the stiffness characteristics of the sawn timber comply with Class C24 as per Eurocode 5. Norm Strength class Norme Classe de résistance Norma Classe di resistenza Valeurs caractéristiques de résistance en N/mm2 Tension parallel to the fibre Traction axiale Trazione parallela alla fibratura Tension perpendicular to the fibre Traction transversale Trazione perpendicolare alla fibratura Compression perpendicular to the fibre Compression axiale Compressione parallela alla fibratura Compression perpendicular to the fibre Compression...

Rv,z,d,SIA Rm,y,d,SIA Rm,y,k,fi Rv,z,d,fi,SIA Rm,y,d,fi,SIA

Values of surface ­element Rv,z,d,SIA Rm,y,d,SIA Rm,y,k,fi Rv,z,d,fi,SIA Rm,y,d,fi,SIA

Rm,y,k,fi Rv,z,d,fi,SIA Rm,y,d,fi,SIA Rm,y,k,fi Rv,z,d,fi,SIA Rm,y,d,fi,SIA Values of surface element acoustics type 3.1

Values of surface element acoustics type 3.1

Rv,z,d,fi,SIA Rm,y,d,fi,SIA

LIGNATUR elements can essentially be combined with any conventional building material. If you cannot position the elements directly on the wall, there is a large variety of possible bearing details for you to choose from. Some of them are shown on the left. Bearing details need to be checked for their structural properties. The following tables provide the characteristics of various LIGNATUR bearing types. Approved SFS-WT 6.5 . I - connectors are used to reinforce the cross cut of the jog.

Pre-dimension the framing based on the deflection w = I / 450 using the adjacent diagrams according to the following example and select the constructively best framing based on the resulting stiffness El from the table shown on the left. Example: l = 2.6m, qN + qA + g = 8.0kN/m => EI ≥ 800Nmm2 . 109 – this, for instance, c ­ orresponds to gluelam framing GL24 120 / 200, EI = 928Nmm2 . 109 Preliminary statics for framing

Framing connection ROR framing has proved its worth for breakthroughs requiring static reinforcement. More framings and how to connect them are shown on the left. Connecting the gluelam framing with a steel plate and partial or full-thread screws as shown on the image on the left is easy to do. For the load capacity of this connection, please refer to the table.

Static plate The ceiling does not necessarily need to be con­ structed as a static plate. Larger spatial geometries or glass facades may require this. Horizontal forces at right angles to the direction of span are usually accommodated by the outer element itself and passed on to the bearings via the screw connection. There are various possibilities for constructing a static plate: steel strapping, OSB, LIGNATUR shear bolts or shear connectors We will gladly help you with static plate calculations. However, please clarify the following points beforehand: • design • horizontal loads to be...

Verification of box ­element with OSB as static plate Dimensioning values moment Mz,d (qx,d) = qx,d . ls2 / 8 tensile / compressive force Zd = Nd = Mz,d / hs shear force / bearing reaction Ax,d = Bx,d = qx,d . ls / 2 Ay,d = By,d = qy,d . hs / 2 flow of shear forces sv,0,d = Ax,d / hs Verification 3 shear buckling OSB fv,0,d = kv1 . kv2 . fv,d . 35 . t² / ar ≥ sv,0,d Nd kv1 = 1.0 (boards are rigidly connected all around) kv2 = 0.33 (one-sided sheating) av = distance fasteners t = 15mm (thickness OSB) ar = 800mm (distance studs) Rd,nail,Ø3.1mm = 0.53kN Rd,staple,Ø1.8mm = 0.60kN kmod = 0.9 The...