Konstruktionsskruer, fuldgevind - cylinderhoved
Solid-Drive ESCRFTZ konstruktionsskrue til bærende trækonstruktioner fås i forskellige længder og er designet til CLT, limtræ og bjælkeforstærkning.
ESCRFTZ har fuldgevind, et lille cylinderhoved og en skarp spids, så der ikke kræves forboring.
Produktinformationer
Egenskaber
Materiale
- Hærdet kulstofstål
- Gulkromatiseret
Fordele
- Det lille cylinderhoved undersænkes i træet og giver mulighed for skjulte samlinger
- Fuldgevind giver fremragende udtrækningsværdier og høj bæreevne
- Kraftigt gevind og skaft giver styrke og stabilitet
- Skarp spids giver lavt installationsmoment, og der kræves ingen forboring
- ESCRFT leveres med en "half-cut" spids, som gør det nemt at få et greb i træet.
Applikationer
Anvendelsesområder
- CLT væg-til-væg, gulv-til-gulv, panel-til-bjælke
- Forstærkning af limtræsbjælker
Samlinger
- Træ-træ samling
- Armering af træ mod flækning
- Forstærkning af træ for koncenteret last
Teknisk data
Dimensioner
Art. nr. | DB nr. | Dimensioner [mm] | Bit | Antal pr. kasse | ||||
---|---|---|---|---|---|---|---|---|
d | l | dh | d1 | lg | ||||
ESCRFTZ8.0X120 | 1965722 | 8 | 120 | 10.2 | 5.2 | 110 | T-40 | 50 |
ESCRFTZ8.0X140 | 1965723 | 140 | 10.2 | 5.2 | 130 | T-40 | 50 | |
ESCRFTZ8.0X160 | 1965724 | 160 | 10.2 | 5.2 | 150 | T-40 | 50 | |
ESCRFTZ8.0X180 | - | 180 | 10.2 | 5.2 | 170 | T-40 | 50 | |
ESCRFTZ8.0X200 | 1965725 | 200 | 10.2 | 5.2 | 190 | T-40 | 50 | |
ESCRFTZ8.0X220 | - | 220 | 10.2 | 5.2 | 210 | T-40 | 50 | |
ESCRFTZ8.0X240 | 1965726 | 240 | 10.2 | 5.2 | 230 | T-40 | 50 | |
ESCRFTZ8.0X300 | - | 300 | 10.2 | 5.2 | 290 | T-40 | 50 | |
ESCRFTZ8.0X350 | - | 350 | 10.2 | 5.2 | 340 | T-40 | 50 |
Produktets karakteristiske egenskaber
Art. nr. | Karakteristisk bøjningsstyrke - My,k [Nm] | Karakteristisk udtræksparameter - fax,k,90° [N/mm²] | Karakteristisk trækstyrke - ftens,k [kN] | Karakteristisk vridningsstyrke - ftor,k [kN] |
---|---|---|---|---|
ESCRFTZ8 | 20.3 | 13.1 | 24.1 | 25.8 |
Abacus
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] | |
ESCRFTZ8.0X120 | 60 | 5.24 | 4.47 | 4.68 | 4.68 | 4.68 | 4.68 | 4.68 | - | 3.63 | 3.82 | 4.02 | 4.09 | 4.02 | 3.82 | - |
ESCRFTZ8.0X140 | 70 | 6.29 | 4.74 | 4.94 | 4.94 | 4.94 | 4.94 | 4.94 | 4.94 | 3.9 | 4.09 | 4.29 | 4.35 | 4.35 | 4.35 | 4.09 |
ESCRFTZ8.0X160 | 80 | 7.34 | 5 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 4.16 | 4.35 | 4.55 | 4.61 | 4.61 | 4.61 | 4.61 |
ESCRFTZ8.0X180 | 90 | 8.38 | 5.26 | 5.46 | 5.46 | 5.46 | 5.46 | 5.46 | 5.46 | 4.42 | 4.61 | 4.81 | 4.87 | 4.87 | 4.87 | 4.87 |
ESCRFTZ8.0X200 | 100 | 9.43 | 5.52 | 5.73 | 5.73 | 5.73 | 5.73 | 5.73 | 5.73 | 4.65 | 4.87 | 5.07 | 5.14 | 5.14 | 5.14 | 5.14 |
ESCRFTZ8.0X220 | 110 | 10.48 | 5.78 | 5.99 | 5.99 | 5.99 | 5.99 | 5.99 | 5.99 | 4.65 | 5.03 | 5.33 | 5.4 | 5.4 | 5.4 | 5.4 |
ESCRFTZ8.0X240 | 120 | 11.53 | 6.05 | 6.25 | 6.25 | 6.25 | 6.25 | 6.25 | 6.25 | 4.65 | 5.03 | 5.43 | 5.56 | 5.56 | 5.56 | 5.56 |
ESCRFTZ8.0X300 | 150 | 14.67 | 6.33 | 6.74 | 6.74 | 6.74 | 6.74 | 6.74 | 6.74 | 4.65 | 5.03 | 5.43 | 5.56 | 5.56 | 5.56 | 5.56 |
ESCRFTZ8.0X350 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
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.
Crossed pairs of screws - characteristic capacities
Art. nr. | Crossed pair of screws - characteristic capacities | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Header | Joist | Installation distance | Characteristic capacities (Pull-out / Buckling) Rv.pair = min(Rw.k.pair ; Rbuck.k.pair) [kN] | |||||||
bh min [mm] | hj min [mm] | 1 pair | 2 pairs | m [mm] | mi [mm] | 1 pair | 2 pairs | |||
bj min [mm] | bj min 2 [mm] | Rw.k.pair [kN] | Rbuck.k.pair [kN] | Rw.k.pair [kN] | Rbuck.k.pair [kN] | |||||
ESCRFTZ8.0X120 | 64 | 128 | 84 | 124 | 68 | 73 | 7.41 | 3.7 + 13.99 /kmod | 13.82 | 6.91 + 26.11 /kmod |
ESCRFTZ8.0X140 | 64 | 128 | 84 | 124 | 68 | 73 | 8.89 | 4.44 + 13.99 /kmod | 16.59 | 8.29 + 26.11 /kmod |
ESCRFTZ8.0X160 | 67 | 128 | 84 | 124 | 68 | 73 | 10.37 | 5.18 + 13.99 /kmod | 19.35 | 9.67 + 26.11 /kmod |
ESCRFTZ8.0X180 | 74 | 140 | 84 | 124 | 68 | 73 | 11.85 | 5.92 + 13.99 /kmod | 22.12 | 11.06 + 26.11 /kmod |
ESCRFTZ8.0X200 | 81 | 154 | 84 | 124 | 75 | 80 | 13.33 | 6.66 + 13.99 /kmod | 24.89 | 12.44 + 26.11 /kmod |
ESCRFTZ8.0X220 | 88 | 168 | 84 | 124 | 82 | 87 | 14.82 | 7.41 + 13.99 /kmod | 27.65 | 13.82 + 26.11 /kmod |
ESCRFTZ8.0X240 | 95 | 182 | 84 | 124 | 89 | 94 | 16.3 | 8.15 + 13.99 /kmod | 30.42 | 15.21 + 26.11 /kmod |
ESCRFTZ8.0X300 | 117 | 225 | 84 | 124 | 111 | 116 | 20.74 | 10.37 + 13.99 /kmod | 38.71 | 19.35 + 26.11 /kmod |
ESCRFTZ8.0X350 | 134 | 260 | 84 | 124 | 128 | 133 | 24.45 | 12.22 + 13.99 /kmod | 45.63 | 22.81 + 26.11 /kmod |