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加拿大Icon Architects事务所发布了其位于多伦多的31层塔楼设计方案，在建成后，该楼将成为北美最高的大体量木结构建筑。

该建筑用地位于多伦多市中心，靠近多伦多大学。如果得到市政府的批准，该建筑将达到90米高，成为北美最高的大型木结构建筑。

根据其他项目设计情况，包括由Schmidt Hammer Lassen设计的瑞士100米高的塔，多伦多塔可能是世界上最高的大型木结构建筑。

据Icon Architects事务所表示，这座住宅大楼将使用交叉层压木材（CLT）作为大楼地板和部分墙壁的材料。

Canadian studio Icon Architects has released its design for a 31-storey tower in Toronto that, if completed, will be the tallest mass-timber structure in North America.
The structure has been proposed for downtown Toronto, near the University of Toronto. If approved by the city, the structure will be 90 metres tall, making it the tallest mass-timber structure in North America.
Depending on the status of other designs – including a 100-metre-tall tower designed by Schmidt Hammer Lassen planned for Switzerland –  the Toronto tower could be the tallest mass-timber structure in the world.
Planned as a residential tower, the studio will use cross-laminated timber (CLT) as the material for the tower's floors and for some of its walls, according to Icon Architects.


▲ Icon Architects在多伦多发布了一栋90米高木构塔楼的设计方案
Icon Architects has released plans for a 90-metre-tall mass-timber tower in Toronto

Icon Architects负责人Reza Eslami说:“我们目前正在与一些制造商进行谈判，但无论如何，他们都是加拿大人。还没有确定具体的东西，没有其他意思。”

Eslami说：“根据客户的愿望，团队将创建一个大规模木材项目，使结构可持续，尽管施工方法比混凝土更昂贵。”

他说：“根据成本估算，我们所追求的结构相较传统的混凝土结构更为昂贵，但作为加拿大最高的木塔，以及迄今为止世界上最高的木塔楼，有着得天独厚的魅力。”

然而，该结构目前不符合安大略省的建筑规范。7月初，多伦多市议会通过了一项决议，允许在多伦多建造12层的大型木结构建筑。

Eslami说：“截至本月初，一座12层的木结构已被纳入安大略省建筑规范，但我们离最高标准还很远，因此我们正在与一位杰出的建筑规范顾问密切合作，以制定建筑规范委员会可以接受的‘替代解决方案’。”
据Eslami介绍，大木塔的设计灵感来自木板游戏Jenga。

"We are currently in talks with a number of manufacturers but in any case, they would be Canadian," said Icon Architects principal Reza Eslami. "Nothing concrete yet, no pun intended!"
Eslami said that the decision to create a mass-timber project came from the clients' desire to make the structure sustainable, despite the construction method being more expensive than concrete.
"Running the cost estimates, the structure that we are after has proved to be more expensive than the conventional concrete structure, but then being the tallest timber tower in Canada and (so far) in the world had its winning charm," he said.
However, the structure currently is not in line with the building code in Ontario. In early July, a decision to allow 12-storey mass-timber buildings to be built in Toronto was passed by the city council.
"As of the beginning of this month, a 12-storey timber structure has found its way into the Ontario Building Code, but we are still far off from that maximum, so we are working very closely with a magnificent building code consultant to prepare the 'alternative solution' that would be acceptable by the Building Code Committee," said Eslami.
The design of the mass-timber tower was inspired by the woodblock game Jenga, according to Eslami.


▲ 这座建筑的下方街道层是遗产建筑
The building will leave the heritage buildings at streetlevel

图片显示，在新街区下面，一排爱德华七世时期的砖砌建筑外竖立着一条多彩面板。爱德华七世时期的建筑是遗产，必须保留下来。

根据Eslami的说法，面板将采用BIPV面板，尽管这只是前瞻性的策略。他补充说，到目前为止，这种规模的建筑所需的木覆层维护费用过于昂贵。

他继续说道：“另一种选择是使用带有假木纹的金属板，这种材料在低层建筑中广泛使用，但那是假的，不过我们不想作假。”

项目完成之后，建筑将包含有23万平方英尺(21368平方米)的住宅空间，这是 494个住宅单元。

目前，北美最高的大木结构建筑是明尼苏达州Michael Green设计的一座七层建筑。

目前世界上最高的木材建筑是由挪威Voll Arkitekter设计的Mjøstårnet塔楼，其高度为85.4米，完全由木材制成。

大量木材在北美持续流行。2021年，纽约市批准建造高达25.9米的大型木构建筑。

Images show a multi-colour siding that rises up from a row of Edwardian brick buildings beneath the new block. The Edwardian buildings have heritage status and must remain in place.
According to Eslami, the siding will be BIPV panels, though this is only prospective. He added that as of now, the maintenance required for wood cladding for a building of this size would be too costly.
"An alternative would have been to use metal panels with fake wood grains on them, that are widely used in low-rise buildings, but then it would be fake – we didn’t want to be fake," he continued.
If completed, the structure will have 230,000 square feet (21,368 square metres) of residential space spread across the public spaces and 494 residential units.
Currently, the tallest mass-timber structure in North America is a seven-storey structure by Michael Green in Minnesota.
The tallest mass-timber building in the world is currently Mjøstårnet by Voll Arkitekter in Brumunddal, Norway, an 85.4-metre-high tower with a structure made completely from timber products.
Mass timber continues to grow in popularity across North America. In 2021, New York City approved the construction of mass-timber structures up to 25.9 metres tall.