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TTUFS

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Timber to Timber characteristic capacities

Art. nr. Product characteristic capacities - Timber to Timber C24
Axial resistance Shear resistance parallel to the grain depending of t1 [Rv.0.k] [kN] Shear resistance perpendicular to the grain depending of t1 [Rv.90.k] [kN]
t1 [mm] Rax.k [kN] 35 [mm] 40 [mm] 45 [mm] 60 [mm] 75 [mm] 80 [mm] ≥100 [mm] 35 [mm] 40 [mm] 45 [mm] 60 [mm] 75 [mm] 80 [mm] ≥100 [mm]
TTUFS4.5X60 25 1.19 - - - - - - - - - - - - - -
TTUFS4.5X70 30 1.19 1.41 - - - - - - 1.41 - - - - - -
TTUFS4.5X80 30 1.19 1.41 - - - - - - 1.41 - - - - - -
TTUFS5.0X60 25 1.64 - - - - - - - - - - - - - -
TTUFS5.0X70 30 1.64 1.81 - - - - - - 1.81 - - - - - -
TTUFS5.0X80 40 1.64 1.81 1.81 1.81 - - - - 1.81 1.81 1.81 - - - -
TTUFS5.0X90 45 1.64 1.81 1.81 1.81 - - - - 1.81 1.81 1.81 - - - -
TTUFS5.0X100 40 1.64 1.81 1.81 1.81 - - - - 1.81 1.81 1.81 - - - -
TTUFS5.0X120 60 1.64 1.81 1.81 1.81 1.81 - - - 1.81 1.81 1.81 1.81 - - -
TTUFS6.0X70 30 2.73 2.35 - - - - - - 2.35 - - - - - -
TTUFS6.0X80 40 2.73 2.44 2.59 2.44 - - - - 2.44 2.59 2.44 - - - -
TTUFS6.0X90 45 2.73 2.44 2.6 2.62 - - - - 2.44 2.6 2.62 - - - -
TTUFS6.0X100 40 2.73 2.44 2.6 2.62 - - - - 2.44 2.6 2.62 - - - -
TTUFS6.0X120 50 2.73 2.44 2.6 2.62 - - - - 2.44 2.6 2.62 - - - -
TTUFS6.0X140 70 2.73 2.44 2.6 2.62 2.62 2.62 - - 2.44 2.6 2.62 2.62 2.62 - -
TTUFS6.0X160 90 2.73 2.44 2.6 2.62 2.62 2.62 2.62 - 2.44 2.6 2.62 2.62 2.62 2.62 -
TTUFS6.0X180 110 2.73 2.44 2.6 2.62 2.62 2.62 2.62 2.62 2.44 2.6 2.62 2.62 2.62 2.62 2.62

These capacities are valid for:

  • Timber element under the head with thickness ≤ t1 disclosed in adjacent column
  • Screw axis between 45° and 90° from timber grain for ESCR(XXX), and 90° from timber grain for all other screws.

For tightening screws (partially threaded), t1 dimension is the maximum thickness of the under-head timber member for which the thread is fully in the pointside timber member, for an optimum installation and tightening.

The shear capacities are given for several timber thicknesses t1 of the under-head member under the following configurations:

  • Load axis at 0° from both timber grains Rv.0°.k
  • Load axis at 90° from both timber grains Rv.90°.k

These capacities are valid for C24 timber grades or higher
The pre-drilled hypothesis for capacity and distances calculation is fulfilled.
For partial threaded screws, capacities are only given for configurations where the thread is less than 5mm in under-head timber member, in order to achieve optimum installation and tightening.
Clause (2) in 8.3.1.2 from EN1995-1-1:2004+A2:2014 about embedment length is ignored in these calculations.

Steel to Timber characteristic capacities

Art. nr. Product characteristic capacities - Steel to Timber C24
Axial resistance [Rax.st.k] [kN] Shear resistance - Thin plate Shear Resistance - Thick steel
Rv.0.st.k [kN] Rv.90.st.k [kN] Rv.0.st.k [kN] Rv.90.st.k [kN]
TTUFS4.5X60 3.02 1.87 1.87 2.33 2.33
TTUFS4.5X70 3.46 1.98 1.98 2.44 2.44
TTUFS4.5X80 4.32 2.19 2.19 2.65 2.65
TTUFS5.0X60 2.31 1.98 1.98 2.56 2.56
TTUFS5.0X70 2.64 2.06 2.06 2.64 2.64
TTUFS5.0X80 2.64 2.06 2.06 2.64 2.64
TTUFS5.0X90 2.97 2.14 2.14 2.72 2.72
TTUFS5.0X100 3.96 2.39 2.39 2.97 2.97
TTUFS5.0X120 3.96 2.39 2.39 2.97 2.97
TTUFS6.0X70 4.13 2.96 2.96 3.76 3.76
TTUFS6.0X80 4.13 2.96 2.96 3.76 3.76
TTUFS6.0X90 4.64 3.09 3.09 3.89 3.89
TTUFS6.0X100 6.19 3.48 3.48 4.28 4.28
TTUFS6.0X120 7.22 3.74 3.74 4.54 4.54
TTUFS6.0X140 7.22 3.74 3.74 4.54 4.54
TTUFS6.0X160 7.22 3.74 3.74 4.54 4.54
TTUFS6.0X180 7.22 3.74 3.74 4.54 4.54

Shear capacities are given for thick (tst = d) and thin (tst = 0,5xd) steel plates under the following configurations:

  • Load axis at 0° from timber grain Rv.0°.k
  • Load axis at 90° from timber grain Rv.90°.k

These capacities are valid for C24 timber grades or higher.
For intermediate steel thicknesses, capacities shall be calculated by linear interpolation between the limiting thin and thick plate values.
The pre-drilled hypothesis for capacity and distances calculation is fulfilled.

Ledger on stud characteristic capacities

Art. nr. Product characteristic capacities - Ledger on stud C24
Minimum width of the stud [mm] Minimum distance to the bottom side of the ledger a4,c [mm] Shear capacity depending of thickness of ledger t1 [Rv.90-0.k] [kN]
35 [mm] 40 [mm] 45 [mm] 60 [mm] 75 [mm] 80 [mm] 90 [mm] ≥100 [mm]
TTUFS4.5X70 27 13.5 1.41 - - - - - - -
TTUFS4.5X80 27 13.5 1.41 - - - - - - -
TTUFS5.0X70 30 15 1.81 - - - - - - -
TTUFS5.0X80 30 15 1.81 1.81 1.81 - - - - -
TTUFS5.0X90 30 15 1.81 1.81 1.81 - - - - -
TTUFS5.0X100 30 15 1.81 1.81 1.81 - - - - -
TTUFS5.0X120 30 15 1.81 1.81 1.81 1.81 - - - -
TTUFS6.0X80 36 18 2.62 2.6 2.44 - - - - -
TTUFS6.0X90 36 18 2.62 2.62 2.62 - - - - -
TTUFS6.0X100 36 18 2.62 2.62 2.62 - - - - -
TTUFS6.0X120 36 18 2.62 2.62 2.62 - - - - -
TTUFS6.0X140 36 18 2.62 2.62 2.62 2.62 2.62 - - -
TTUFS6.0X160 36 18 2.62 2.62 2.62 2.62 2.62 2.62 2.62 -
TTUFS6.0X180 36 18 2.62 2.62 2.62 2.62 2.62 2.62 2.62 2.62

The pre-drilled hypothesis for capacity and distances calculation is fulfilled.

Panel to Timber characteristic capacities

Art. nr. Panel (OSB, Fibreboard ρk≥380 kg/m3) on Timber C24 depending on panel thickness tp
13 [mm] 15 [mm] 18 [mm] 22 [mm] 25 [mm]
Rax.k.13 [kN] Rv.0.k.13 [kN] Rv.90.k.13 [kN] Rax.k.15 [kN] Rv.0.k.15 [kN] Rv.90.k.15 [kN] Rax.k.18 [kN] Rv.0.k.18 [kN] Rv.90.k.18 [kN] Rax.k.22 [kN] Rv.0.k.22 [kN] Rv.90.k.22 [kN] Rax.k.25 [kN] Rv.0.k.25 [kN] Rv.90.k.25 [kN]
TTUFS4.5X35 - 0.73 0.73 - 0.72 0.72 - - - - - - - - -
TTUFS4.5X40 - 0.85 0.85 - 0.83 0.83 - 0.84 0.84 - 0.88 0.88 - - -
TTUFS4.5X45 1.27 1.16 1.16 1.27 1.21 1.21 - 0.94 0.94 - 0.97 0.97 - 0.92 0.92
TTUFS4.5X50 1.27 1.16 1.16 1.27 1.21 1.21 1.27 1.3 1.3 - 1.05 1.05 - 1.03 1.03
TTUFS4.5X60 1.27 1.16 1.16 1.27 1.21 1.21 1.27 1.3 1.3 1.27 1.43 1.43 1.27 1.53 1.53
TTUFS4.5X70 1.27 1.16 1.16 1.27 1.21 1.21 1.27 1.3 1.3 1.27 1.43 1.43 1.27 1.53 1.53
TTUFS4.5X80 1.27 1.16 1.16 1.27 1.21 1.21 1.27 1.3 1.3 1.27 1.43 1.43 1.27 1.53 1.53
TTUFS5.0X40 - 0.94 0.94 - 0.92 0.92 - 0.91 0.91 - - - - - -
TTUFS5.0X50 1.75 1.44 1.44 1.75 1.49 1.49 1.75 1.57 1.57 - 1.15 1.15 - 1.18 1.18
TTUFS5.0X60 1.75 1.44 1.44 1.75 1.49 1.49 1.75 1.57 1.57 1.75 1.69 1.69 1.75 1.8 1.8
TTUFS5.0X70 1.75 1.44 1.44 1.75 1.49 1.49 1.75 1.57 1.57 1.75 1.69 1.69 1.75 1.8 1.8
TTUFS5.0X80 1.75 1.44 1.44 1.75 1.49 1.49 1.75 1.57 1.57 1.75 1.69 1.69 1.75 1.8 1.8
TTUFS5.0X90 1.75 1.44 1.44 1.75 1.49 1.49 1.75 1.57 1.57 1.75 1.69 1.69 1.75 1.8 1.8
TTUFS6.0X40 - 1.08 1.08 - 1.04 1.04 - - - - - - - - -
TTUFS6.0X50 2.92 1.68 1.68 2.92 1.96 1.96 - 1.32 1.32 - 1.29 1.29 - 1.31 1.31
TTUFS6.0X60 2.92 1.68 1.68 2.92 1.96 1.96 2.92 2.13 2.13 2.92 2.24 2.24 - 1.57 1.57
TTUFS6.0X70 2.92 1.68 1.68 2.92 1.96 1.96 2.92 2.13 2.13 2.92 2.24 2.24 2.92 2.34 2.34
TTUFS6.0X80 2.92 1.68 1.68 2.92 1.96 1.96 2.92 2.13 2.13 2.92 2.24 2.24 2.92 2.34 2.34
TTUFS6.0X90 2.92 1.68 1.68 2.92 1.96 1.96 2.92 2.13 2.13 2.92 2.24 2.24 2.92 2.34 2.34

Plywood to Timber Characteristic Capacities

Art. nr. Plywood (ρk≥490 kg/m3) on Timber C24 depending on panel thickness tp
10 [mm] 15 [mm] 18 [mm] 22 [mm] 25 [mm] 30 [mm]
Rax.k.10 [kN] Rv.0.k.10 [kN] Rv.90.k.10 [kN] Rax.k.15 [kN] Rv.0.k.15 [kN] Rv.90.k.15 [kN] Rax.k.18 [kN] Rv.0.k.18 [kN] Rv.90.k.18 [kN] Rax.k.22 [kN] Rv.0.k.22 [kN] Rv.90.k.22 [kN] Rax.k.25 [kN] Rv.0.k.25 [kN] Rv.90.k.25 [kN] Rax.k.30 [kN] Rv.0.k.30 [kN] Rv.90.k.30 [kN]
TTUFS4.5X35 - 0.77 0.77 - 0.72 0.72 - - - - - - - - - - - -
TTUFS4.5X40 - 0.8 0.8 - 0.83 0.83 - 0.83 0.83 - 0.87 0.87 - - - - - -
TTUFS4.5X45 1.55 1.18 1.18 - 0.89 0.89 - 0.93 0.93 - 0.94 0.94 - 0.91 0.91 - - -
TTUFS4.5X50 1.55 1.18 1.18 1.55 1.28 1.28 - 0.97 0.97 - 1.03 1.03 - 1.02 1.02 - 0.91 0.91
TTUFS4.5X60 1.55 1.18 1.18 1.55 1.28 1.28 1.55 1.36 1.36 1.55 1.47 1.47 - 1.18 1.18 - 1.14 1.14
TTUFS4.5X70 1.55 1.18 1.18 1.55 1.28 1.28 1.55 1.36 1.36 1.55 1.47 1.47 1.55 1.56 1.56 1.55 1.59 1.59
TTUFS4.5X80 1.55 1.18 1.18 1.55 1.28 1.28 1.55 1.36 1.36 1.55 1.47 1.47 1.55 1.56 1.56 1.55 1.59 1.59
TTUFS5.0X30 - 0.71 0.71 - - - - - - - - - - - - - - -
TTUFS5.0X40 - 0.98 0.98 - 0.93 0.93 - 0.92 0.92 - - - - - - - - -
TTUFS5.0X50 1.98 1.3 1.3 - 1.07 1.07 - 1.14 1.14 - 1.15 1.15 - 1.17 1.17 - 1.09 1.09
TTUFS5.0X60 2.15 1.3 1.3 2.15 1.61 1.61 2.15 1.68 1.68 2.15 1.8 1.8 - 1.36 1.36 - 1.34 1.34
TTUFS5.0X70 2.15 1.3 1.3 2.15 1.61 1.61 2.15 1.68 1.68 2.15 1.8 1.8 2.15 1.89 1.89 - 1.5 1.5
TTUFS5.0X80 2.15 1.3 1.3 2.15 1.61 1.61 2.15 1.68 1.68 2.15 1.8 1.8 2.15 1.89 1.89 2.15 2.03 2.03
TTUFS5.0X90 2.15 1.3 1.3 2.15 1.61 1.61 2.15 1.68 1.68 2.15 1.8 1.8 2.15 1.89 1.89 2.15 2.03 2.03
TTUFS6.0X40 - 1.2 1.2 - 1.08 1.08 - - - - - - - - - - - -
TTUFS6.0X50 3.1 1.47 1.47 - 1.39 1.39 - 1.36 1.36 - 1.33 1.33 - 1.35 1.35 - - -
TTUFS6.0X60 3.58 1.47 1.47 3.58 2.2 2.2 3.58 2.35 2.35 - 1.57 1.57 - 1.6 1.6 - 1.62 1.62
TTUFS6.0X70 3.58 1.47 1.47 3.58 2.2 2.2 3.58 2.35 2.35 3.58 2.47 2.47 3.58 2.56 2.56 - 1.85 1.85
TTUFS6.0X80 3.58 1.47 1.47 3.58 2.2 2.2 3.58 2.35 2.35 3.58 2.47 2.47 3.58 2.56 2.56 3.58 2.75 2.75
TTUFS6.0X90 3.58 1.47 1.47 3.58 2.2 2.2 3.58 2.35 2.35 3.58 2.47 2.47 3.58 2.56 2.56 3.58 2.75 2.75