Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
AbstractAn unheated, insulated (R19) shop building with a concrete slab-on-grade floor was constructed at a site without permafrost near the ocean shoreline in Nome, Alaska. During the first 9 years after construction, the floor slab’s north side moved 0.17 m upward relative to its southeast corner. An investigation revealed that permafrost had formed under the building. The shop building’s presence caused an uneven energy draw from soil under it. The permafrost formation and floor slab upward movement patterns together indicate that the energy draw is greatest at the building’s northern exposure, which is where the least solar radiation had been received. This transfer of energy primarily exists because when the shop building was constructed the difference between terrestrial radiation emitted and solar radiation received increased at the site. Results of engineering analyses indicate that the shop building’s energy draw is equivalent to an annual 5 to 10°C temperature decrease, respectively, between its southwest corner and north side.
AbstractAn unheated, insulated (R19) shop building with a concrete slab-on-grade floor was constructed at a site without permafrost near the ocean shoreline in Nome, Alaska. During the first 9 years after construction, the floor slab’s north side moved 0.17 m upward relative to its southeast corner. An investigation revealed that permafrost had formed under the building. The shop building’s presence caused an uneven energy draw from soil under it. The permafrost formation and floor slab upward movement patterns together indicate that the energy draw is greatest at the building’s northern exposure, which is where the least solar radiation had been received. This transfer of energy primarily exists because when the shop building was constructed the difference between terrestrial radiation emitted and solar radiation received increased at the site. Results of engineering analyses indicate that the shop building’s energy draw is equivalent to an annual 5 to 10°C temperature decrease, respectively, between its southwest corner and north side.
Northern Exposure in Nome
Crowther, G. Scott (Autor:in)
2016
Aufsatz (Zeitschrift)
Englisch
| Online Contents | 2017
| ASCE | 2016
| British Library Online Contents | 2017
Engineering Index Backfile | 1910
| Engineering Index Backfile | 1911