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Brandkrav, branddimensionering och brandskydd för trätakstolar: Ur ett konstruktörsperspektiv
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
2018 (svensk)Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
Abstract [en]

This study contains a compilation and a clarification of the rules and requirements that can be applied to trusses and roof structures in consideration to fire. The different steps to decide the fire resistance of a truss or a roof construction is not that distinct and has to be combined with experience and subjective assessment. In case of fire the load combination for accidental load is used and in comparison with the ultimate limit state, the loads are reduced. Two different methods have been presented to determined the strength of construction timber, when exposed to fire. Both methods showed that construction timber, with a width of 45 mm, had a strength that correlate to a fire resistance of zero minutes. To improve the fire resistance of a roof construction different methods to protect the element has been presented. The most efficient ways to protect the construction is with gypsum boards and rockwool but for lower requirements wood covering can also be used. Fire retardant treatment (FTR) and fire protecting paint are also presented but are not applicable on wood trusses due to that FTR decreases the strength and fire protecting paint needs larger dimensions. In order to illustrate the different steps that are used when determining fire requirements of roof structures, two fictitious examples is presented. 

sted, utgiver, år, opplag, sider
2018. , s. 64
Emneord [sv]
takstol, takkonstruktion, brand, brandmotstånd, dimensioneringsregler, brandskydd, konstruktionsvirke
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-37873OAI: oai:DiVA.org:hh-37873DiVA, id: diva2:1244482
Utdanningsprogram
Construction Engineer, 180 credits
Veileder
Examiner
Tilgjengelig fra: 2018-09-07 Laget: 2018-09-01 Sist oppdatert: 2018-09-07bibliografisk kontrollert

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