A record demand for tall and supertall buildings appears to be alive and well. But the big question is whether it will stay that way.

The Council on Tall Buildings and Urban Habitat, in its2018年CTBUH高层建筑年度评论, found that 18 supertall buildings 300 meters or taller completed construction last year—a record number that beats 2017, but only by three. The number of completed buildings in 2018, at least 200 m and including at least 300-m-plus buildings, is 143. That is four fewer high-rises than in 2017.

The 10-page report, primarily authored by CTBUH's editor Daniel Safarik, is full of data on tall buildings completed and under way. For example, the group predicts between 120 and 150 buildings 200 m or taller to wrap up construction this year.

“This range takes into consideration the total number of projects currently underway, but it is common for a substantial percentage of projects anticipated for completion to be delayed into the next year or later,” says the report.

目前99大楼300米或taller under construction, according to theSkyscraper Center，CTBUH的高层建筑信​​息的交互式数据库。但报告和摩天大楼中心还包含拟议建筑物的数据，不包含高层建筑的2019年施工的数量没有预测。

“Sites push dirt around for often indeterminable amounts of time before a piece of structure goes into the ground,” which is when CTBUH considers a building under construction, “so our ability to predict true construction starts is hampered,” says Jason Gabel, a spokesman for the group.

Predictions

仍然存在预测。贾贝尔说，只有今年的欧洲和南美洲可能没有超级建筑施工。“我预计超级金属建设的放缓，在中国开始，但仍然可以超越世界其他地区，”他说。

根据摩天大楼中心的说法，1公里的高大的吉达塔预计将于2021年完成。如果已完成，该建筑将超过当前的高度记录持有人，在迪拜完成的828米Burj Khalifa，该公司于2010年完成。预计吉隆坡644-M Merdeka PNB118的完成也是2021年。

In April, the 462-m Lakhta Center is expected to open, making it officially Europe’s tallest. The building in St. Petersburg, Russia, was commissioned in October and its spire was erected a year ago in January. The 363-m Vista Tower, a mixed-use building in Chicago, is set to top out later this year.

There are 144 buildings 300 m or taller in the world; 1,477 towers 200 m or taller; and 4,634 high-rises 150 m or taller, according to the group, which has been keeping track of tall buildings since 1969. And by December, there likely will be 200 completed supertall buildings. There are currently 144, up from 126 in 2017. In 2000, there were only 26 supertall buildings.

Primary Structural Material

Concrete retains its lead as the primary structural material, claiming 90 of the 143 buildings 200 m or taller, or 62.9%. This represents an increase from 49.7% in 2017.

本月，世界上最高的大块木材建筑，88.8米Mjøstårnetin Brumundal, a small town in Norway, is scheduled for completion.

CTBUH气候适合个子高的木材是总体说y positive. In August, Oregon became the first jurisdiction to explicitly change itsbuilding code to allow taller混合质量木材框架。国际代码理事会很可能approve taller timber buildingsin its 2021 update of the International Building Code. The provisions would allow mass-timber framing in residential and office buildings as tall as 270 ft.

One cloud for timber, according to the 2018 CTBUH review, is that beginning Dec. 21, the U.K. banned all combustible cladding on buildings taller than 18 m, which in the “current interpretation, includes timber.”

Dominance of Asia

The dominance of Asia as a region in terms of the proportion of the 100 tallest buildings continued to grow in 2018, rising to 59 buildings, from 54 in 2017, says the report.

The Middle East accounted for 23 of the 100 tallest, a decrease from 26 in 2017, and from 24 in 2016. North America has 14 of the 100 tallest, down from 15 in 2017. Europe’s figure changed to three, from four in 2017 and two in 2016. One of the tallest 100 is in Oceania – the 323-m Q1 Tower in Australia’s Gold Coast. Ranked 85^钍in the top 100, it was completed in 2005.

Mixed-use remained the dominant function in the 100 tallest in 2018. There were 47 mixed-use towers, an increase of two from 2017. The figure for office functions only was 38.

提到其预测，该报告结束：“我们还必须承认世界各地的许多地方的经济和政治波动日益增加。我们越来越互联，全球产业意味着对高层建筑项目的规划，设计和建造中断可能会出现意外。“新利18备用网址