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- Antell, Elina, 1947-
(författare)
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Grundförstärkning på husets styrkevillkor
- 1989
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Ingår i: Kulturmiljövård. - Stockholm : Riksantikvarieämbetet. - 1100-4800. ; :3-4, s. 8-13
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Vi får inte fixera oss vid enbart deformationer utan vi måste se hela byggnadens bärverk i ett och samma perspektiv, säger Ove Hidemark i en intervju till Kulturmiljövård. Ove Hidemark är professor vid Konsthögskolans Arkitekturskola, avdelningen för restaurerings konst, tillika en framstående praktiserande arkitekt i restaurering. Hans restaureringar följer en bestämd modell som utgår från en förundersökning, en teknisk-historisk dokumentation och en efterföljande analys av hela husets status. —En grundförstärkning kan aldrig diskuteras utan hänsyntill husets överbyggnad, säger Ove Hidemark. Själva ordet grundförstärkning är fel, tycker han och utvecklar sina tankar så här.
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| 6. |
- Andersson, Berit
(författare)
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Fire behaviour of beds and upholstered furniture - an experimental study (Second test series) Part 1
- 1985
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- A series of twelve full scale experiments with upholstered furniture and beds has been carried out. Ten experiments were performed inside an extensively equipped compartment with a door opening. In order to study the influence of the room on the fire development two experiments were carried out in the open outside the compartment. One experiment in the room was made with restricted ventilation simulating a room with only a small window open. During the experiments measurements were made of temperatures, heat fluxes, rate of heat release and smoke production. The concentrations of oxygen, carbonmonoxide, carbondioxide and nitrogen oxides in the combustion gases were also measured. Results from one experiment, a sofa with filling of standard polyurethane and cover of 100% acrylic fibres is presented in detail. From the rest of the experiments the temperature-time curves and the rate of heat release curves are given. The flame spread rates for the tests with mattresses and beds, determined from videofilms of the tests, are presented. Conclusions that can be drawn from the results are that the covering material of the furniture plays an important role in the development of a fire. I t is possible to produce upholstery materials that are difficult to ignite even with very powerful ignition sources. The room has a measurable influence on the fire development when the release of energy exceeds 1 XL. An attempt is made to compare simple theoretical models for room fires with experimental results. A correlation equation based on regression analysis by J. Ouintiere for assumption of the temperature in the hot upper layer in the room is applied to the experiments and gives good agreement with the experimental results. A number of models for determining flashover are also utilized and the results are in consistency with the experience gathered during the series of experiments. The calculations presented in this report were all carried out without help from computers. A more comprehensive theoretical analysis will follow in part 2 of the report.
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- Andersson, Berit, et al.
(författare)
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Fire Behaviour of Upholstered Furniture - An Experimental Study
- 1982
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The first and largely experimental part of a research program on flammability characteristics of upholstered furniture has been completed with full-scale tests in an extensively instrumented burn-out room as main element. The results indicate that fire response parameters vary within a large range with choice of filling, interlining and fabric material. Selection of performance criteria may cause difficulties, as parameters like heat release and smoke potential fluctuate strongly during the fire process. A second part of the program will be directed towards measurement of heat release by oxygen consumption methods, more detailed smoke and gas analysis measurements and use of mathematical simulation procedures.
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| 8. |
- Andersson, Berit
(författare)
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Model scale compartment fire tests with wall lining materials
- 1988
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Two series of tests with wall lining materials in an extensively equipped model scale room have been carried out. The dimensions of the room were 1.2 X 0.8 X 0.8 m³. In test series I the wall lining materials were mounted on three walls and in the ceiling. This test series comprised thirteen different materials. In test series I1 ten different materials were tested. They were mounted on the walls only. The test compartment was instrumented for measurement of gas temperatures. surface temperatures, heat flux. rate of heat release and for analysis of oxygen. Carbonmonoxide, carbondioxide and smoke.The ignition source was a propane gas diffusion burner. During the first 10 minutes the burner output was 11 kW. If no sustained burning in the material was achieved during this period the energy output was raised tv 33 kW. In the report all the collected data are summarized in tables, giving values at flashover and for combustion products production rates and total production. In appendices the time curves for the measured variables are given together with visual observations made during the tests.
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- Blomqvist, Jan, et al.
(författare)
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Modelling of furniture experiments with zone models
- 1985
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Ingår i: Fire and Materials. - : Wiley. - 0308-0501 .- 1099-1018.
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The Harvard Computer Fire Code Mark V has been used to simulate full-scale Furniture fires. Simulations were run with one sofa burning in the open and another burning in a small room. To obtain better agreement between experiment and simulation, changes were made in the code to include heating of the lower surfaces in the room. A simulation of a mattress test, conducted at NBS, is included. Comparison with a zone model using a different plume equation is also presented.
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- Bohgard, Mats, et al.
(författare)
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Arbetsmiljö vid termisk ogräsbekämpning
- 1988
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten behandlar arbetsmiljön vid termisk ogräsbekämpning. Metoden innebär att ogräset hettas upp med hjälp av gaslågor. Både stora fordonsburna och mindre handdrivna används. Det som från arbetsmiljösynpunkt är speciellt med metoden är de risker som är förknippade med gasolanvändningen. De allvarligaste problemen med de aggregat som studerats har varit heta och oskyddade plåtar, heta avgaser och brister i komponentval när det gäller slangar och kopplingar. I rapporten ges anvisningar om åtgärder för att minska riskerna avseende komponentval, säkerhetsanordningar och utbildning. Bland myndighetskrav på utrustning kan nämnas att leverentatörer ska lämna säkerhetsanvisningar på svenska samt att arbetet inte får utföras av minderåriga. Den psykosoicala miljön har också undersökts. De operatörer som intervjuats har upplevt arbetet positivt.
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