TVBH-5054 - Byggnadsfysik - Lunds tekniska högskola
TVBH-5054 - Byggnadsfysik - Lunds tekniska högskola
TVBH-5054 - Byggnadsfysik - Lunds tekniska högskola
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Innehållsförteckning<br />
1 INLEDNING.................................................................................................................................. 1<br />
1.1 BAKGRUND.............................................................................................................................. 1<br />
1.2 PROBLEMFORMULERING.......................................................................................................... 1<br />
1.3 SYFTE....................................................................................................................................... 2<br />
1.4 MÅLGRUPP .............................................................................................................................. 2<br />
1.5 AVGRÄNSNINGAR.................................................................................................................... 2<br />
1.6 FÖRVÄNTAT RESULTAT ........................................................................................................... 2<br />
1.7 METODIK ................................................................................................................................. 3<br />
1.7.1 Experimentella metoder................................................................................................... 3<br />
1.7.2 Beräkningsmetodik .......................................................................................................... 3<br />
1.7.3 Litteratursökningsmetodik............................................................................................... 3<br />
1.7.4 Arbetsgång....................................................................................................................... 3<br />
1.8 RAPPORTENS DISPOSITION OCH LÄSANVISNINGAR ................................................................. 4<br />
2 TEORI ............................................................................................................................................ 5<br />
VI<br />
2.1 BYGGNADSFYSIK..................................................................................................................... 5<br />
2.1.1 Fuktig luft ........................................................................................................................ 5<br />
2.1.2 Fukt i material................................................................................................................. 5<br />
2.1.3 Sorptionskurvan............................................................................................................... 6<br />
2.1.4 Fuktvandringens drivkrafter och riktningar.................................................................... 8<br />
2.1.5 Fuktkällor ........................................................................................................................ 9<br />
2.1.6 Lufttäthet ....................................................................................................................... 10<br />
2.1.7 Konsekvenser av inbyggd fukt ....................................................................................... 10<br />
2.2 FUKTDIMENSIONERING.......................................................................................................... 12<br />
2.2.1 Innehåll och tillvägagångssätt ...................................................................................... 12<br />
2.2.2 Ansvarsfördelning ......................................................................................................... 13<br />
2.3 GÄLLANDE FÖRESKRIFTER OCH REGLER............................................................................... 14<br />
2.3.1 Byggregler enligt Hus AMA 98 och RA 98 Hus ............................................................ 14<br />
2.3.2 Byggregler enligt BBR................................................................................................... 14<br />
2.3.3 PERs branschregler för våtrum..................................................................................... 15<br />
2.3.4 Materialhantering enligt Hus AMA 98.......................................................................... 16<br />
2.3.5 Materialhantering enligt BBR ....................................................................................... 17<br />
2.4 INGÅENDE MATERIAL – TEKNISKA EGENSKAPER.................................................................. 18<br />
2.4.1 Vindskydd ...................................................................................................................... 18<br />
2.4.2 Trä ................................................................................................................................. 18<br />
2.4.3 Isolering......................................................................................................................... 18<br />
2.4.4 Ångbroms....................................................................................................................... 18<br />
2.4.5 Ångspärr........................................................................................................................ 18<br />
2.4.6 Våtrumsgips................................................................................................................... 18<br />
2.4.7 Tätskikt .......................................................................................................................... 19<br />
2.5 MÄTUTRUSTNING .................................................................................................................. 20<br />
2.5.1 Mätare för relativ fuktighet – RF-givare....................................................................... 20<br />
2.5.2 Termistor ....................................................................................................................... 20<br />
2.5.3 Mätare för fuktkvot i trä ................................................................................................ 21<br />
2.5.4 Våg med tillhörande program ....................................................................................... 21