Lars Olsson

Forskare

Tel

+46 10 516 50 23

Email

lars.olsson@ri.se

Location

Borås

ORCID

0000-0003-4211-4885

Lars Olsson is a researcher. For 20 years he has worked with moisture calculations, moisture damage investigations and tests - both at field and in laboratory - of constructions, mainly with respect to indoor environment, moisture, rain and air tightness. Since 2008 he has conducted research, on moisture in wood constructions and research on driving rain tightness and phenomenology of leakages in defects of facades, and he did his licentiate thesis 2014 and doctoral thesis 2018, at Chalmers University of Technology. For the moment, Lars is a project manager for certification rules of external walls, roofs och floors. The last conducted two research projects are about moisture safety of CLT buildings during construction without weather protection. Lars is the project manager for a ongoing research project on driving rain tightness of concrete sandwich walls.

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Moisture safety in CLT construction without weather protection

The aim was to increase knowledge of how the moisture safety of CLT structures is affected by precipitation during frame erection without weather protection. CLT elements and construction details, joints and connections, have been…

Rain resistance of precast concrete sandwich walls with façade details

Inspection results showed that in three-quarters of all measured vertical joints between the concrete elements were often significantly too narrow. Lab results for concrete sandwich walls with façade details indicated inward leaka…

Moisture and temperature logging

RISE offers a service for continuous measurement and monitoring system with wireless sensors of the climate in building structures. The system also measures moisture content and especially in Nordic spruce and pine with wood speci…

Moisture calculation and mould prediction of building construction

Moisture calculation is a method to clarify relatively quickly whether a construction has theoretical conditions to function well. The result of a moisture calculation is often evaluated with mould simulation. A moisture calculati…

Review of drawings, building designs, systems and materials

The review identifies, for example, weaknesses and deficiencies that may make it difficult to achieve good moisture safety and the requirements of building regulations. The review may also result in a favorable assessment or in i…

Moisture damage survey of building structures

The structural design and stability of the structure shall not be affected by the system or the design of the structure itself, such as the frame, foundation, roof or walls. RISE may make any or all of the following interpretation…

Timber constructions

The construction of timber structures has increased significantly since 1994, when changes to European structural standards meant that buildings taller than two storeys could be constructed using timber. Since then, interest in th…

Assessment of building systems

In order to determine the function and performance of a building system, including its connections, it is necessary to make an overall test and assessment of it. A building system may consist of roofing, outer walls or flooring/fo…

Mechanically ventilated constructions

Mechanically ventilated constructions are used to create moisture-proof constructions and to stop emissions from reaching the indoor environment.

Publications

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