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--- en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam [2020/03/24 11:38] – [Optimization of layup] Alexandra Thiel
+++ en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam [2020/03/24 12:51] – [Fire] Alexandra Thiel
@@ Line 94: / Line 94: @@
 === Optimization of layup ===
-Use the button {{en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam:show_cs_optimization_button.png?130&nolink}} to display the window for layup optimization.
+Use the button {{en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam:show_cs_optimization_button.png?170&nolink}} to display the window for layup optimization.
 {{ en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam:cs_optimization.png?600 |Layup optimization}}
@@ Line 136: / Line 136: @@
 ==== Fire ====
-By choosing "Fire above" and/or "Fire below" in the tab "Fire" a structural fire design has to be carried out. The "Fire duration" is specified in minutes and can be increased (or decreased) by increments of 30 minutes by pressing the up (or down) arrows, or defined by entering a specific duration between 0 minutes and 240 minutes in the allotted box. By ticking the box next to "Fire protection" a layer of fire protection is added to the plate, but the effective protection time of the protection layer needs to be defined.
+By choosing "Fire above" and/or "Fire below" in the tab "Fire" a structural fire design has to be carried out. The "Fire duration" is specified in minutes and can be increased (or decreased) by increments of 30 minutes by pressing the up (or down) arrows, or defined by entering a specific duration between 0 minutes and 240 minutes in the allotted box. By ticking the box next to "Fire protection system" a layer of fire protection is added to the plate. Furthermore, the position ("above" and/or "below") must be declared and the parameters t<sub>ch</sub>, t<sub>f</sub>, k<sub>2</sub> and k<sub>3</sub> must be specified. In case the failure time of the fire protection system is equal to the time until the protected component starts to burn, the option "t<sub>f</sub> = t<sub>ch</sub>" shall be checked.
 {{ en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam:fire.png |Input - Fire}}
-For a user-defined cross section, options are given for specifying heat resistant adhesives, presence of grooves, and whether the layers are edge-glued. For proprietary CLT products both values are set automatically and they cannot be changed.
+For a user-defined cross section, options are given for specifying heat resistant adhesives, presence of grooves, and whether the layers are edge-glued. For CLT products both values are set automatically and they cannot be changed.
+Some manufacturers offer CLT elements with different adhesives, so instead of selecting "Heat resistant adhesive", it is also possible to select the adhesive.
+{{ en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam:pur_muf_choice.png |Adhesive PUR / MUF}}
 The values k<sub>fire</sub> (conversion factor 20%-quantiles) and d<sub>0</sub> (layer thickness to take into consideration the influence of temperature exposure) are pre-set and cannot be changed. The charring rate is dependent on the option edge glued or without groove. For a user-defined cross section this value can be changed.
+In some approvals or design proposals a different charring rate is expected from the 2nd layer onwards. This will show up as follows:
+{{ en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam:charring_rate_2.png |Charring rate from 2nd layer onwards}}
 ==== Vibrations ====