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jerryking : building_codes   5

The Trees and the Forest of New Towers - The New York Times
By Stephen Wallis
Nov. 20, 2019

Mass timber refers to prefabricated structural wood components that can be used to construct buildings — even large-scale buildings — faster, with less waste and eventually with less money........Mass timber refers to a variety of different types of engineered wood components, the most common being cross-laminated timber (known as CLT) and nail-laminated timber (or NLT), in which multiple layers of wood planks, stacked at 90 degrees, are glued or nailed together under pressure to form structural panels. So-called glulams, which are made in a similar fashion and have been around for more than a century, are typically used for long elements like beams and columns.........building with mass timber can ameliorate climate change because it produces less in greenhouse gas emissions than construction with concrete and steel. And wood has the benefit of storing the carbon dioxide trees absorb during their growth, keeping it out of the atmosphere indefinitely.....While cutting down trees to make buildings may not sound environmentally sensitive, mass timber supporters argue that wood could be harvested from sustainably managed forests...At the end of last year, the International Building Code was changed to allow wood buildings of up to 270 feet tall, or the equivalent of about 18 stories, from 85 feet....People want to live and work in these kinds of buildings — they have a sense of connection to the material,”......what we’ve seen from fabricators and builders is that there’s a 35 percent drop in construction time for mass-timber buildings, which means the carrying costs are less.”....
architecture  building_codes  climate_change  construction  design  emotional_connections  lumber  materials  skyscrapers  sustainability  Swatch  timber  wood_products  
november 2019 by jerryking
Donald Trump has ushered in a new global order. Here’s how Canada can protect itself -
JANUARY 21, 2019 |The Globe and Mail | COLIN ROBERTSON.
SPECIAL TO THE GLOBE AND MAIL
PUBLISHED 21 HOURS AGO
UPDATED
Colin Robertson is vice-president of the Canadian Global Affairs Institute.
building_codes  bullying  Canada  climate_change  maritime  multilateralism  new_normal  post-WWII  rogue_actors  rules-based  Thucydides  Donald_Trump  international_system  self-protection 
january 2019 by jerryking
Log Cabins? No, These Wooden Buildings Are High-Rises
Jan. 1, 2019 | The New York Times | By C. J. Hughes.

"But proponents scored a huge win last month when the International Code Council, an influential advisory group in Washington, concluded that some wooden buildings could climb as high as 18 stories, more than twice the current permissible height, without compromising safety."....."In addition to their green benefits, he said, wood buildings perform well in earthquakes because of their lighter weight and flexibility.".....Proponents of wood must still overcome a longstanding bias. In the 1800s, fires were a scourge, prompting restrictions on wood. But steel is not infallible and can buckle in extreme heat, ....“But we’ve gotten comfortable using steel and concrete products, so the question’s been, ‘Why would we change?’” ....Still, wood is not what it used to be. The decline in old-growth forests means developers can no longer count on huge single trunks to support floors. Instead, they rely on mass timber, an engineered product made of layers of spruce or fir pressed together in a way that is similar to plywood but with a more elegant look......Wood remains expensive, but the assembly-line aspect of mass-timber production, in which factories make large panels, then assemble them on-site, saves time and labor costs......
construction  timber  wood_products  design  lumber  building_codes  skyscrapers 
january 2019 by jerryking
Toronto has finally found the confidence to act like a big city - The Globe and Mail
MARCUS GEE
The Globe and Mail
Published Wednesday, Mar. 18 2015

Toronto has finally found the confidence to act like a big city.

Back in the 1970s, Toronto was so fearful about density and development that city hall slapped a temporary 45-foot (13.7-metre) height restriction on new construction in the downtown core. Over time, planners have come to understand that if the region is going to absorb hundreds of thousands of newcomers without succumbing to endless urban sprawl, it will have to grow up rather than out. Now the boom in condo construction and the vogue for downtown living has made it possible to build a denser, livelier urban core. If central Toronto is starting to feel even a bit like Manhattan, it can only be a good thing.
Marcus_Gee  Toronto  densification  downtown_core  urban  urbanization  urban_intensification  urban_planning  skyscrapers  building_codes 
march 2015 by jerryking
Toronto’s problem has grown beyond its mayor
Nov. 08 2013 | The Globe and Mail |Richard Florida

Toronto must deal with an even larger schism, the one that divides its booming 21st-century economy from its outmoded growth model and system of governance. It is this – not Mr. Ford – that poses the most serious threat to Toronto’s continued prosperity....Toronto has reached a true inflection point, and the problem is not high taxes or fiscal profligacy, as many have framed it....Toronto’s biggest problem is its growth model, which has far outlived its shelf life.

When a city region like Toronto – or Atlanta, Washington, Dallas or Miami – hits the 5.5 to six million mark in population, it can no longer grow based on cars and sprawl. It has to grow upward as well as outward and has to become much more oriented to transit. Most cities fail to make the required investments and their growth stalls and falters. The truly great cities are able to invest in ways that change their growth trajectory. This is what New York did more than a century ago when it built its rail and subway lines. That’s what Toronto needs to do now if it wants to achieve its ambition to become a truly global city....To do so requires not just massive investments in transit, but more flexible building and zoning regimes that promote greater density at the core and in the suburbs alike. The dysfunction in the mayor’s office means that all this is being put on the back burner....then there is the deep and fundamental problem of the growing geographic inequality that produced Mr. Ford in the first place. ....Inequality has frustrated even the most effective mayors...[Toronto} needs a new governance system that is adequate to the new challenges it faces....Toronto can lead the world by devising a modern system that’s up to the task of investing in governing and investing in a large economically integrated city. ...the basic idea would be to create a new kind of federalism, which extends from the provincial government through the city and all the way down to the varied communities and neighbourhoods that make it up.
21st._century  building_codes  cities  communities  densification  federalism  land_uses  mayoral  neighbourhoods  NYC  Queen’s_Park  regulation  Richard_Florida  Rob_Ford  scandals  schisms  transit  Toronto  zoning  inflection_points 
november 2013 by jerryking

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