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samenvatting Constructie 1B: H5: HELLENDE EN GEBOGEN CONSTRUCTIES
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samenvatting Constructie 1B: hoofdstuk 5: HELLENDE EN GEBOGEN CONSTRUCTIES
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Constructie 11BA-AR sem.2 – 2020-2021, DRIES POSEN
Hoofdstuk 5: HELLENDE EN GEBOGEN CONSTRUCTIES
Inhoud
Inhoud ................................................................................................................................................ 1
Hellende en gebogen constructies in contact met de buitenruimte ...................................................... 2
• Algemene functies: ..................................................................................................................... 2
Dragende functie - bouwstabiliteit ......................................................................................................... 2
• Dragende elementen → vangen inwerkende krachten op en dragen ze over naar: .................. 2
• Horizontaal werkende krachten opvangen................................................................................. 2
• Basisprincipes voor draagstructuur dak: .................................................................................... 3
- Gordingenkap ......................................................................................................................... 3
▪ gordingen ........................................................................................................................... 3
▪ kepers ................................................................................................................................. 3
- Sporenspantendak .................................................................................................................. 3
▪ verhoogde kepers/sporen .................................................................................................. 4
▪ spantendak ......................................................................................................................... 4
Vochtisolerende functie - bouwfysica .................................................................................................... 4
• Dakbedekkingsmateriaal ............................................................................................................ 4
- Kleinschalig ............................................................................................................................. 4
▪ onderdak/dakbeschot ........................................................................................................ 4
▪ panlatten ............................................................................................................................ 5
- Grootschalig ........................................................................................................................... 5
Thermisch isolerende functie – bouwfysica & bouwtechnologie ........................................................... 5
• Niet geïsoleerde (zolder)ruimte ................................................................................................. 5
• Koudebrugwerking ..................................................................................................................... 6
• Isolatie ........................................................................................................................................ 6
Geluidsisolerende functie - bouwfysica .................................................................................................. 6
• Lucht- en contactgeluid .............................................................................................................. 6
- Luchtgeluid ............................................................................................................................. 6
- Contactgeluid ......................................................................................................................... 6
- Betere geluidsisolatie ............................................................................................................. 6
Luchtdichtheid - bouwfysica ................................................................................................................... 7
Amber Severens Pagina 1 van 7
, • Hellende en gebogen daken: lichte opbouw .............................................................................. 7
Dampdichtheid - bouwfysica .................................................................................................................. 7
• Dampschermen .......................................................................................................................... 7
Brandveiligheid ...................................................................................................................................... 7
Afwerking ............................................................................................................................................... 7
• Onderzijde .................................................................................................................................. 7
• Bovenzijde .................................................................................................................................. 7
Hedendaagse ontwikkelingen ................................................................................................................ 7
Hellende en gebogen constructies in contact met de buitenruimte
• Algemene functies:
- bescherming bovenzijde gebouw tegen weerinvloeden
- weren v. vocht
- thermisch + akoestisch isoleren
- opvangen/overdragen van lasten
- stabiliteit
- buitenhouden v. geuren, stuifmeel, ongedierte, dieven, ...
- toelaten van daglicht
- …
Dragende functie - bouwstabiliteit
• Dragende elementen → vangen inwerkende krachten op en dragen ze over naar:
‘draagconstructie v.h. dak’
- buitenwanden
- binnen- en buitenwanden (nooit enkel binnenwanden!)
- kolommen (puntlasten)
• Horizontaal werkende krachten opvangen
- Windkrachten → dakconstructie = onvervormbaar geheel:
▪ Schijfwerking + windverbanden
- Verankering dakconstructie aan ruwbouwconstructie/hoog eigen gewicht => niet
verschuiven, omkippen, wegvliegen door winddruk/ -zuiging
- Veelgebruikte materialen voor daktimmerwerk
▪ Hout
o Makkelijk aan te passen op werf zelf
=> planmaten mogelijk afgeweken tijdens bouwen ruwbouw
▪ Staal (minder gebruikelijk, wel mogelijk)
Amber Severens Pagina 2 van 7
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