The head of the official inquiry explains his theories on why the World Trade Center Towers collapsed.
"No building could have survived such a blow, expert after expert has said.But things are hardly that simple. No one has authoritatively explained why One World Trade Center remained standing for 1 hour and 40 minutes while Two World Trade Center crashed to the ground just 56 minutes after impact. Another mystery is why smaller, nearby structures remained standing even though fire and steel from the twin towers rained down on them and even ripped huge chunks out of their facades."
Thanks to Design Architecture
FULL STORY: How the twin towers collapsed
Florida Considers Legalizing ADUs
Current state law allows — but doesn’t require — cities to permit accessory dwelling units in single-family residential neighborhoods.
San Diego to Rescind Multi-Unit ADU Rule
The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.
HUD Announces Plan to Build Housing on Public Lands
The agency will identify federally owned parcels appropriate for housing development and streamline the regulatory process to lease or transfer land to housing authorities and nonprofit developers.
Building Age-Friendly Homes
Designing for the unique needs of elderly people can help them maintain social connections and mental acuity.
Nightlife and the 15-Minute City
Plans for compact, walkable cities often don’t address nighttime concerns like transportation and lighting, which can make neighborhoods more vibrant and safe around the clock.
Mississippi Aims to Abolish Income Tax — and Replace it With Gas Tax
The new gas tax would fund MDOT and the Strategic Multi-Modal Investments Fund.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Strategic Economics Inc
Resource Assistance for Rural Environments
City of Grandview
Harvard GSD Executive Education
UCLA Lewis Center for Regional Policy Studies
City of Piedmont, CA
Great Falls Development Authority, Inc.
NYU Wagner Graduate School of Public Service