Building damage & repair

News and Updates

A steel column with a deep web on the left and a steel column with a shallow web on the right.

Proposed Updates to Steel Building Standard Could Enhance Earthquake Resilience

January 7, 2022

Since the mid-1990s, a type of steel column that commonly features slender cross-sectional elements has become more prevalent in buildings along the West Coast

NIST Establishes Expert Team to Investigate the Champlain Towers South Collapse

August 25, 2021

GAITHERSBURG, Md. — The U.S. Department of Commerce’s National Institute of Standards and Technology (NIST) announced today the expert team members who will

A man in a construction hat points to damage on a concrete column lying on the ground while another researcher looks on.

NIST Will Conduct Technical Investigation Into the Collapse of the Champlain Towers South Condominium

June 30, 2021

SURFSIDE, Fla. — Today the U.S. Department of Commerce’s National Institute of Standards and Technology (NIST) announced it would launch a full technical

Projects and Programs

Hierarchical Materials

Ongoing

Nature utilizes a hierarchy of length scales and tiered structure to build lightweight, strong, and tough materials. Engineers look to exploit the advantage of

Publications

Quantifying Material Uncertainty in Seismic Evaluations of Reinforced Concrete Bridge Column Structures

May 1, 2022

Author(s)

Christopher Segura, Siamak Sattar, Mohammadamin Hariri Ardebili

In seismic performance evaluations, the force-deformation response of a structure is typically assessed using a deterministic analytical model, and inherent

Lessons on Return to Function After the 2018 Cook Inlet Earthquake

September 30, 2021

Author(s)

Katherine Johnson, Siamak Sattar, Christopher Segura, Steven McCabe

The magnitude 7.1 Cook Inlet Earthquake of November 2018 greatly affected Anchorage, AK area residents. Although shaking likely did not exceed the hazard level

Uncertainty in the Seismic Response of Structural Components due to Material Variability

September 15, 2020

Author(s)

Christopher L. Segura, Siamak Sattar

Inherent variability in the mechanical properties of reinforcing steel and concrete introduces uncertainty into the seismic assessment of reinforced concrete

DEVELOPMENT OF A DATABASE OF EXPERIMENTAL TESTS ON FRP RETROFITTED REINFORCED CONCRETE SHEAR WALLS

September 15, 2020

Author(s)

Jazalyn D. Dukes, Siamak Sattar

Codes and standards developing organizations, such as American Society of Civil Engineers (ASCE) and American Concrete Institute (ACI), rely on experimental