The Georgian "Six-Over-Six"

with Jeffrie Lane

The technology of window design and manufacturing has undergone many changes over the last several decades, such that the similarities between the modern version of the ubiquitous wood double hung window and its traditional counterpart have diminished in many important respects. The purpose of the course is to examine the relationship between these two increasingly different mechanisms and to identify which features and qualities of the traditional model are important to maintain and preserve in our efforts to design buildings which respect the craft traditions and conventions of the period buildings that inspire them.

The course will enable participants to:

1. Learn the history of the double hung, or vertical sliding sash window, and how the stylistic changes reflect advances in glass manufacturing over time.

2. Learn how the standardization of the ubiquitous “twelve light sash” enabled architects from the 17th to 20th centuries to specify window sizes in their construction documents using the size of a pane of glass as a form of shorthand.

3. Identify window parts, their names, dispositions and relationships and understand how they contribute to the structure and functioning of the larger assembly.

4. Understand a series of factors to be considered during the preliminary design process in order to ensure that the sizing, proportions and positions of windows will be respectful of traditional conventions.

5. Be introduced to the significant differences between traditional windows and their modern counterparts, both in stock and custom form.

6. Learn how current building code requirements relating to energy savings and structural integrity have impacted the design and manufacturing of modern windows.

Instructional Delivery Method: Live In-Person Learning Program

Program Level: Introductory

Provider Number: G193

AIA CES Program Approval Expiration Date: October 9, 2022

Provider Statement: The Institute of Classical Architecture & Art is a registered provider of AIA-approved continuing education under Provider Number G193. All registered AIA CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider or this learning program may be sent to AIA CES ([email protected] or (800) AIA 3837, Option 3).

This learning program is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

AIA continuing education credit has been reviewed and approved by AIA CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.


This course will be offered on December 6, 2019, 1:00 PM - 2:00 PM, as part of the Health, Safety, and Welfare in Traditional Design day. Course registration is available on the program page here.