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AV Office

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Abstract Publication

415 Avery Hall

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Ilana Curtis
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Academic Affairs

400 Avery Hall

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Danielle Smoller
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Academic Calendar, Columbia University

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Academic Calendar, GSAPP

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Admissions Office

407 Avery Hall
1172 Amsterdam Avenue
New York, New York 10027

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Steffen Boddeker, Sara Konekeo, Monisola Fakiyesi
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Advanced Standing Waiver Form

Must be printed and returned to 400 Avery Hall

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Alumni Board

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Alumni Office

405 Avery Hall
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New York, New York 10027

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Architecture Studio Lottery

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Assistantships

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Avery Library

300 Avery Hall
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Avery Review

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Avery Shorts

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Black Student Alliance at Columbia GSAPP

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Career Services

300M Avery Hall

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Columbia Books on Architecture and the City

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Commencement

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Communications Office

415 Avery Hall

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Dean’s Office

402 Avery Hall
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New York, NY 10027

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Development Office

404 Avery Hall

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Leah Cohen, Esther Turay, Elizah Laurenceau
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3030 Broadway Dodge

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End of Year Show

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Events Office

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Faculty Directory

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Finance Office

406 Avery Hall

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Fitch Colloquium

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Future Anterior Journal

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GSAPP Community Fellowship Program

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IT Office, GSAPP

Ben Goldie, Alvaro Gamboa, Christopher Hou, Roberto Marsach Jr., Nicholas Martucci, Diego Patino Toro, Hannette Un
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IT, Columbia University (CUIT)

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LatinGSAPP

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Making Studio

Schermerhorn Extension Floor 1

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Non-Discrimination Statement and Policy

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O

Onera Prize for Historic Preservation

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Online Admissions Application

GSAPP Admissions 407 Avery Hall

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Output Shop

116 Avery Hall
1172 Amsterdam Avenue
New York, NY 10027

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Carlito Bayne, Sherly Orilas
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Ownership of Student Work Policy

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Paris Prize, Buell Center

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Paul S. Byard Memorial Lecture Series

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Percival & Naomi Goodman Fellowship

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Policies & Resources

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Press Releases

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Publications Office

415 Avery Hall
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New York, New York 10027

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QSAPP

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Registration: Add / Drop Form

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STEM Designation

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Skill Trails

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Student Affairs

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Student Awards

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Student Conduct

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Student Council (All Programs)

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Student Financial Services

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Student Health Services at Columbia

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Student Organization Handbook

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Student Organizations

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Student Services Center

205 Kent Hall

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Student Services Online (SSOL)

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Student Work Online

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Studio Culture Policy

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Studio Procedures

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Summer Workshops

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Support GSAPP

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Travel Guide

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URBAN Magazine

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University Apartment Housing (UAH)

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University Resources

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Website

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Faculty

John Walsh

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Adjunct Assistant Professor

M.S. Historic Preservation

John Walsh is a materials scientist who specializes in the analysis and characterization of historical masonry and concrete materials. He is an Adjunct Assistant Professor of Historic Preservation at Columbia GSAPP and the founder and president of Highbridge Materials Consulting, a laboratory firm in Pleasantville, NY. He is committed to fostering a scientific interest in the performance characteristics of building materials within the broader multidisciplinary framework of architecture conservation. His laboratory and many of its resources are open to students interested in experimental or analytical research.

John Walsh began his career as a geologist earning a B.S. with Honors from Queens College CUNY and a Master’s Degree from Columbia University as a National Science Foundation Graduate Research Fellow. His primary research interests were in the deformation and failure mechanisms of limestone in fault zones. His research time was split between large-scale field investigations in the high desert of the western UnitedStates and fine-scale microscopic analysis of deformed stone. During his professional career, John Walsh brought this multi-scale approach first to modern concrete analysis and ultimately to the investigation of materials used in historical construction. His research in building materials has emphasized the history and distribution of cements and limes throughout the United States and Canada as well as the performance of cementitious systems in aggressive service environments over extended life cycles. As one of very few practitioners in this field, he has had the privilege of working on hundreds of historic buildings, monuments, and infrastructural projects.

Courses

Course Semester Title Student Work Instructor Syllabus Requirements & Sequence Location & Time Session & Points Call No.
ARCH6784‑1 Fall 2025
Conservation of Brick, Terra Cotta & Stone
 Norman Weiss, John Walsh
Preservation Technology Lab (655 Schermerhorn)
M 10 AM - 1 PM
Session B
1.5 Points
 10746
See all