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Crommelin, R.D. (author), Jackman, P.J. (author), Instituut voor Milieuhygiëne en Gezondheidstechniek TNO (author)
A system of induction units of an existing air conditioning system has been analyzed with respect to its dynamic properties. Time constants were calculated and measured by analogue models. Comparison with measurements at the installation itself showed a reasonable agreement. Frequency responses were studied in the same way. Lumping of the...
conference paper 1978
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Soetens, F. (author), van Straalen, IJ.J. (author), Dijkstra, O.D. (author), TNO Bouw (author)
The paper is dealing with the results of a European resea.rch project within the framework of
conference paper 1995
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van der Klugt, L.J.A.R. (author), TNO Bouw (author)
Masonry consists of brick and mortar. Next to the laying mortar there can be a separate pointing mortar as well. Each of these components can suffer damage. Such damages, of course, have to do with the properties of the components and with the agressiveness of the environment. However, next to their composition, the properties of a mortar appear...
conference paper 1995
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Knoll, B. (author), Phaff, J.C. (author), de Gids, W.F. (author), TNO Bouw en Ondergrond (author)
A computer program has been developed to predict the wind pressure coefficients Cp on facades and roofs of block shaped buildings. The program is based on fits of measured data, including wind shielding by obstacles and terrain roughness. Main advantages of the program are: it needs no expertise of its users on wind pressures; the input is...
conference paper 1995
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van Straalen, IJ.J. (author), Soetens, F. (author), Dijkstra, O.D. (author), TNO Bouw (author)
The paper is dealing with the fatigue test results on adhesive bonded joints of the EUREKA
conference paper 1995
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Boonstra, M.J. (author), Pendlebury, A.J. (author), Esser, P.M. (author)
The shower test quantifies the amount of specific preservative components which leach from treated timber under simulated open storage conditions. The test method measures leaching from both organic and inorganic salt treated timber. Shower tests of CCF, CCZF, CCB and Cu-quat treated timber which have been performed over the last 5 years by TNO...
conference paper 1995
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Luscuere, P.G. (author)
Tegenwoordig worden in de meeste ontwikkelde landen Operatie Kamers (OK's) voor chirurgische ingrepen standaard toegepast. De toepassing van zg. 'downflowsystemen' is ca. 20 jaar oud en afgezien van kleine verbeteringen is dit systeem in grote lijnen nog hetzelfde als 20 jaar geleden. De twee meest gebruikelijke systemen maken gebruik van...
conference paper 1996
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Lalani, M. (author), Morahan, D.J. (author), van Foeken, R.J. (author), Wardenier, J. (author)
A Joint industry project (JIP) commenced in 1993(1) to develop a design manual for tubular joints which are strengthened or repaired through chord grout-filling. This project has been funded by five oil companies and two regulatory bodies. The project has comprised the conduct of over 150 Stress Concentration Factor (SCF). Further ultimate load...
conference paper 1996
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van de Kuilen, J.W.G. (author), Blass, H.J. (author)
Joints govern the design of many types of timber structures. Knowledge about the long term strength is limited. The long term behaviour of joints in is not necessarily the same as for timber, although many design codes give the same load duration factors for timber and joints. This study is focussed on the long term behaviour of joints and...
conference paper 1996
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Stark, J.W.B. (author)
De vigerende Nederlandse normen voor het vervaardigen van staalconstructies resp. NEN 2008 (VVSB) en NEN 2009 (VVSG) zullen binnen afzienbare tijd worden vervangen door de Europese voornorm ENV 1090. Het eerste deel van deze norm met daarin "Algemene regels èn regels voor gebouwen" werd onlangs door de commissie CEN-TC135 met algemene stemmen...
conference paper 1996
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Vrouwenvelder, A.C.W.M. (author)
It is a well known fact that the assessment of an existing structure cannot be performed on the basis of a design code. The fact that the structure is an existing object in stead of a proposal on paper, proves to make great difference. In the case of an existing structure one has, for instance, the possibility to measure its geometry, its...
conference paper 1996
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Luscuere, P.G. (author)
CE staat in de belangstelling evenzo als dit met diverse bouwproces-beheersingssystemen in eerdere dagen het geval was. Vele van deze methoden zijn gericht op het optimaliseren van de beheersing van één van de aspecten: tijd, geld, kwaliteit, informatie of organisatie. Het spreekt voor zich dat dergelijke optimaliseringen over meerdere...
conference paper 1996
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Twilt, L. (author), van de Leur, P.H.E. (author), Cajot, L.-G. (author), Schleich, J.-B. (author), Joyeux, D. (author), Kruppa, J. (author)
Traditionally, structural fire safety design is based on conventionally rather than on physically based thermal actions. This certainly holds for the international standards in the field, see e.g. [1]. Therefore, the release of Eurocode 1, part 2-2: "Actions on structures exposed to fire" [2], should be seen as a turning point: for the first...
conference paper 1996
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Hoiseth, K.V. (author), Kaptijn, N. (author), de Boer, A. (author), Rots, J.G. (author)
In connection with renovation of a skew plate fly-over in concrete, nonlinear analyses have been performed, to assess the load carrying capacity before and after strengthening. The FEM-model was justified by linear analyses, where the influence of spatial resolution, shear and longitudinal curvature was studied. The tensile properties of...
conference paper 1996
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Siemes, A.J.M. (author), Steen, R. (author)
The paper gives a framework for a performance based procedure for the design of structures for durability. This procedure is in principle a modification of the structural limit state design. This implies that the performances are given as limit state functions and expressed in terms of reliability. At this moment several activities have been...
conference paper 1996
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Courage, W.M.G. (author), van Foeken, R.J. (author)
so-called direct and indirect methods. The direct methods (CASE method, TNO method) yield straight forward real time results. The more accurate indirect methods (CAPWAP, TNOWAVE) require signal matching. As a result the load displacement diagram is obtained and the bearing capacity can be predicted. The interpretation with the indirect methods...
conference paper 1996
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Both, C. (author), Twilt, L. (author), Stark, J.W.B. (author)
conference paper 1996
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Ham, P.J. (author)
For studies in rooms in which dust-free air is important, the department of Indoor Environment, Building Physics and Systems of TNO Building and Construction Research has access to a multifunctional cleanroom annex operating theatre (OP). On the ICCCS-symposium in Zürich 1990 TNO Building and Construction Research the idea was born when a Dutch...
conference paper 1996
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van Straalen, IJ.J. (author), Tomà, A.W. (author), Vis, R. (author), Waaldijk, A. (author), TNO Bouw (author)
ln this paper the authors give their view towards the future wilh regard to stability and the codes. Attention is given to thin-gauge columns sensitive to local buckling, flexural buckling, lateraltorsional buckling and distortional buckling. The phenomena of flexural buckling behaviour of thin gauge columns a¡e described using the results...
conference paper 1996
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Schuurman, R.G. (author), Stark, J.W.B. (author)
Verification methods for longitudinal shear. currently in use, are empirical. This applies for both the m-k method as the Partial Shear Connection method. Parameters and mechanisms determining the behaviour of the shear connection in composite slabs are not directly considered in these methods. A new approach is launched to model the behaviour...
conference paper 1996
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