{"id":6652,"date":"2019-01-21T12:22:57","date_gmt":"2019-01-21T12:22:57","guid":{"rendered":"https:\/\/foamitgroup.tempurl.host\/foamitfinland\/project\/the-lasipalatsi-courtyard-deck\/"},"modified":"2019-01-21T12:22:57","modified_gmt":"2019-01-21T12:22:57","slug":"the-lasipalatsi-courtyard-deck","status":"publish","type":"project","link":"https:\/\/foamitgroup.fi\/en\/project\/the-lasipalatsi-courtyard-deck\/","title":{"rendered":"The Lasipalatsi Courtyard Deck"},"content":{"rendered":"\n

Forms The Roof of the Amos Rex Art Museum<\/h2>\n\n\n\n

Lasipalatsi, a building in central Helsinki, was originally erected as a temporary structure more than 50 years ago. The building came up for renovation at the same time as the Amos Anderson art museum was looking for a site for a new building. This gave rise to a project to simultaneously renovate the popular Lasipalatsi and to construct a new, mainly underground, museum building.<\/strong><\/p>\n\n\n

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Project<\/h3>
The Lasipalatsi courtyard deck<\/div>\r\n \r\n <\/div>\r\n\r\n <\/div>\r\n\r\n <\/div>\r\n\r\n\r\n \r\n\r\n
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Completion<\/h3>
2018<\/div>\r\n \r\n <\/div>\r\n\r\n <\/div>\r\n\r\n <\/div>\r\n\r\n\r\n \r\n\r\n
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Contractor<\/h3>
KerabitPro Oy<\/div>\r\n \r\n <\/div>\r\n\r\n <\/div>\r\n\r\n <\/div>\r\n\r\n\r\n \r\n\r\n
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Structural designer<\/h3>
Sipti Oy<\/div>\r\n \r\n <\/div>\r\n\r\n <\/div>\r\n\r\n <\/div>\r\n\r\n\r\n \r\n <\/div>\r\n <\/div>\r\n\r\n \r\n<\/div>\r\n\n\n\n

One special characteristic of the project was the need to support the old clocktower in the Lasipalatsin aukio square, and this became one of the most demanding phases in the entire project.<\/p>\n\n\n\n

The museum\u2019s load-bearing frame was built around and beneath the clocktower, which was supported for the duration of the work. Several other tasks were underway while the frame was being constructed. These tasks included waterproofing, which was included in the contract awarded to KerabitPro Oy.<\/p>\n\n\n\n

Foam glass aggregate lightens the deck cover<\/h2>\n\n\n\n

The frame of the cast-in-situ courtyard deck, which is also the museum\u2019s roof, consists of horizontal sections with cupolas at regular intervals. The cupolas have a maximum gradient of 30\u00b0, and they act as skylights for the museum. At their bases, the cupolas have a corresponding structure to the surrounding horizontal areas. The courtyard deck structure consists of a three-ply waterproofing membrane, three extruded thermal insulation plates, a subsurface drain mat, filter fabric and a layer of foam glass averaging 0.5 metres in thickness.<\/p>\n\n\n\n

All of the aforementioned structural layers, as well as the reinforced concrete slab made on top of them, were included in KerabitPro\u2019s contract. \u201cThe steep sections required particularly careful installation,\u201d says production director Ari Hoikkala at KerabitPro Oy.<\/p>\n\n\n\n

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u003cblockquoteu003ernu003ch3u003eThe beginning of the project was spent completing waterproofing of the vertical arches underground. After that, we were able to build the courtyard deck, with its demanding structure and shape.u003c\/h3u003ernu003c\/blockquoteu003ernu003cp style=u0022text-align: rightu0022u003eu003cemu003eProduction Director\u00a0Ari Hoikkala, KerabitPro Oyu003c\/emu003eu003c\/pu003e<\/p>\n <\/div>\r\n \r\n \r\n <\/div>\r\n

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u003cblockquoteu003ernu003ch3u003eThe foam glass aggregate acts as a lightening material for the structure. Lightening is essential because the structure has several layers, and the total load must not be too large. Foam glass is the best option for a lightening material because it also has good load-bearing capacity in addition to its other benefits.u003c\/h3u003ernu003c\/blockquoteu003ernu003cp style=u0022text-align: rightu0022u003eu003cemu003eTeemu Rahikainen, responsible for structural design, Sipti Oyu003c\/emu003eu003c\/pu003e<\/p>\n <\/div>\r\n \r\n \r\n <\/div>\r\n

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\r\n \"\"\r\n The Lasipalatsi courtyard deck<\/span>\r\n <\/div>\r\n
\r\n \"\"\r\n The museum\u2019s load-bearing frame was built around and beneath the clocktower<\/span>\r\n <\/div>\r\n
\r\n \"\"\r\n The foam glass aggregate acts as a lightening material for the structure.<\/span>\r\n <\/div>\r\n <\/div>\r\n \r\n \r\n
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