Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam [2020/03/24 11:38]
Alexandra Thiel [Optimization of layup]
en:clt:hotspot:software:cltdesigner:manual:modul_plate1d_continuousbeam [2020/03/24 12:51] (current)
Alexandra Thiel [Fire]
Line 94: Line 94:
 === Optimization of layup === === 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}} {{ en:​clt:​hotspot:​software:​cltdesigner:​manual:​modul_plate1d_continuousbeam:​cs_optimization.png?​600 |Layup optimization}}
Line 136: Line 136:
 ==== Fire ==== ==== 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}} {{ 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. 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 ==== ==== Vibrations ====