Department of Architectural Technology                                                         




Exterior Wall Assembly Assignment

Description: Interior space requires a level of control over the quality and condition of the environment including temperature, humidity, moisture, air quality, airflow, lighting, and acoustic properties. The control of the interior environment starts with the building envelope. The building envelope is a system of assembled elements and spaces that work together to regulate the relationship between the interior environment and the exterior environment. The performance of the building envelope can be studied and measured to ensure it is providing the designed regulation of environmental elements.

This assignment focuses on the design of the exterior wall assembly for the case study building, utilizing masonry as the primary material. Each student will develop a system for the exterior wall, document it in two and three dimensions, annotate its components to demonstrate their role in the assembly.

Assignment Context: This assignment introduces building assemblies that will be developed and enhanced in the Building Technology courses that continue the sequence.

Prerequisites: Understanding of three-dimensional projection and material properties and modules, completion of the required readings.

Recommended Text: 

Ching, Francis. Architecture Graphics. John Wiley and Sons, 2009.

Suggested Reference: See the City Tech Openlab for additional reference materials.

Plagiarism: Student work submitted must be original and developed individually. Tracing is not acceptable. All construction lines and notations during drawing construction are to remain visible at final submission. Drawings without construction lines (guidelines) will be downgrading significantly.


Assignment Specific Learning Outcomes / Assessment Method
Learning Outcomes Assessment Methods
Upon successful completion of this assignment the student shall be able to: To evaluate the students’ achievement of the learning objectives, the professor will do the following:
Develop coordinated, accurate, and consistent set of two and three-dimensional drawings documenting the exterior wall assembly. Review student drawing set for consistency, orthographic projection and coordination between drawings, and dimensional accuracy.
Understand some of the basic principles used in the appropriate selection of interior and exterior construction materials, finishes, products, components, and assemblies based on their inherent performance, including environmental impact and reuse. Review student notebooks and drawing set submission for proper application of material properties, rules of thumb, and performance analysis.
Understand and apply basic principles of performance analysis. Review student performance analysis diagram for application of conventions and accuracy of analysis.



Grading Rubric                                                     Student Name:








Approaching Capstone







Distinguishing elements especially cut lines (poche), grid lines, transparent elements, finishes


Lines are consistent thickness and quality, in the correct alignment In addition, two line weights are distinguishable, including cut line In addition, three or more line weights are distinguishable, including some finish textures In addition, transparency is clear, centerlines, grid lines, dimension lines are shown w/ correct line type and line weight.


Drawing Organization and Accuracy


Setting out of grid and the relationship of elements to the grid is accurate


Structural Grid is established In addition, structural grid is dimensioned accurately and labeled correctly In addition, major elements (walls, columns) are accurately placed in relation to the structural grid In addition, all drawing elements are carefully located in relationship to centerlines and the structural grid
Construction / Guidelines


Guidelines and constructions were utilized in the careful construction of each drawing

Guidelines are used for overall geometry of drawings In addition, guidelines indicate orthographic projection for 3-d vignette construction. In addition, guidelines indicate geometric center of spaces, perimeters of spaces, and grid locations of key elements In addition, guidelines are accurate, working off of grid lines and centerlines to each major element and guiding alignments.
Envelope System


The exterior envelope system is developed based on principles of exterior wall assembly.


General configuration of exterior wall and assembly is depicted In addition,

masonry modules and coursing is accurate

In addition, insulation and vapor barriers are correctly positioned In addition, all elements of the assembly are properly labeled and annotated
Drawing Conventions + Coordination


Standard methods of drawing and documentation of key data and elements are utilized and coordinated

Drawings are properly scaled and provided with a title including course #, student name, professor name, semester + year In addition, detail drawings are referenced to each other using cut lines and tags In addition, drawings are organized on sheet to ensure proper projection from plan to elevation to section detail In addition, drawings are consistent and coordinated and indicate clear understanding of drawing types and layers of information


 Assignment Schedule:  See syllabus


  1. Plan Detail                  Sheet Size: 12”x 18”              Scale: 1/2”=1’-0”
  2. Wall Section               Sheet Size: 12”x 18”              Scale: 1/2”=1’-0”
  3. Axon                                Sheet Size: 12”x 18”              Scale: 1/2”=1’-0”

Extra Credit:

  1. Annotated Digital Model of Axon Sheet Size: 24”x 36”              Scale: 1/2”=1’-0”                    20 points


Mockup of Exterior Wall Detailed Plan, Axon, and Section of 24″x36″ board with 3/4″ scale drawings.

1/2″=1′-0″ scale applies to individual 12″x18″ sheets

Axon view of Sequence of Construction:

Masonry Wall Details

Videos of Exterior Masonry Wall Construction:

Basic System:

Plan Details:

Plan Detail Overall:

Full Wall System:

Peel Away Axon:

Peel Away Axon Extrusion:

Window Sill Detail for Axon:

Wall Section:


Careful Hand Drafting Techniques: