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    High performance building envelopes with retro-reflective materials

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    Highly reflective materials have been proposed as a strategy for energy consumption reduction in buildings and outdoor comfort improvement (i.e. urban heat island mitigation). Common cool materials’ high reflectivity allows to reduce surface temperature and thus cooling energy consumption in buildings. However, since they reflect energy diffusively in the hemisphere, most of the energy can be trapped within the urban canopy, in case of deep urban canyons and multiple reflections between buildings of different heights. Retro-reflective (RR) materials are proposed as new highly reflective materials for the building skin since they reflect most of the striking energy backward towards the incoming direction. RR directional properties allow to reduce the amount of energy trapped within urban canyons and urban canopies. Several studies are focused on the properties and beneficial effects of RR materials for building application. In this work the properties of retroreflective materials are presented. An analysis of the state of the art of materials for building application is proposed. Furthermore, opportunities and potentialities of RR materials compared to common cool materials are discussed from energy and environmental point of view. A discussion is proposed about their effectiveness and convenience in different urban patterns and for different optic properties and global reflectance

    Wolsey Building, King Street, 1971

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    View of the rear of the Wolsey Building during demolition in 1971

    Wolsey Building, King Street, 1971

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    Photo of the demolition of the Wolsey Building in King Street on 03/10/1971

    Wolsey Building, King Street, 1971

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    Photo of the demolition of the Wolsey Building in King Street on 03/10/1971

    Wolsey Building, King Street, 1971

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    View of the rear of the Wolsey Building during demolition in 1971

    Wolsey Building, King Street, 1971

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    Photo of the demolition of the Wolsey Building in King Street on 03/10/1971

    Wolsey Building, King Street, 1971

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    Photo of the demolition of the Wolsey Building in King Street on 03/10/1971

    Prescriptive post frame building

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    Ready Build Plans Program -- Pole building -- Pole building 24' x 24' x 14' ​-- Pole building 24' x 36' x 14' -- Pole building 36' x 36' x 14' -- Pole building 36' x 48' x 14' -- Pole building 36' x 60' x 14'.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
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