September 11 Digital Archive

Testing the Buildings' Sway [Interview]

Title

Testing the Buildings' Sway [Interview]

Description

Les Robertson, the WTC structural engineer, explains how the acceptable sway for the building was determined.

Sonic memorial comments

nikki and davia interviewed him

Sonic memorial contact

We have a few different Les Robertson pieces. They kind of overlap so I only made one browsable. I think he knows about the website because he sent us his photos. Davia DAT. We have unlimited release.

Sonic memorial creation date

2002-01-01

Sonic memorial duration

00:00:00

Sonic memorial is browsable

f

Sonic memorial keyword

Architecture

Sonic memorial name

Stewardess Load

Sonic memorial permission

web

Sonic memorial source ref name

SMS253_01

Sonic memorial source type

interview

Sonic memorial status

active

Source

digitally recorded

Media Type

audio

Citation

“Testing the Buildings' Sway [Interview],” September 11 Digital Archive, accessed October 1, 2026, https://911.dev.chnm.gmu.edu/items/95291/.