Load Bearing Station Printout Station 01
Load Bearing
The Mechanic
Also known as stacking and piling . Walls are thickest at the bottom and get thinner as they rise, supporting weight by resting pieces on top of each other.
Compression Logic
Case Study: Friday Mosque
The Great Friday Mosque in Mali is the largest mud-brick building. It uses adobe (mud brick) to create massive walls that taper towards the top.
đź•Ś
• Tapered walls
• Toron beams
• Minimal openings
Analysis Prompt
Consider the relationship between mass and space . Why does the interior of a load-bearing mud building feel restrictive compared to a modern glass tower?
Corbeled Station Printout Station 03
Corbeled Arch
The Mechanic
Builders use corbeling by extending each course of stone slightly inward as they rise until they meet at the top. It creates a jagged, stair-step "false arch."
Detail: The Lion Gate
The Lion Gate (c. 1250 BCE) features a massive stone lintel. To prevent this beam from snapping, builders used corbeled stones to create a relieving triangle above it, shifting the weight of the wall to the side posts.
Relieving
Shifts weight away from the lintel beam.
Analysis Prompt
Why is this called a "false" arch? Look at the jagged steps in the diagram. How does the "relieving triangle" solve the weakness of post-and-lintel construction?
Post and Lintel Station Printout Station 02
Post and Lintel
The Mechanic
Consists of two uprights (posts ) supporting a horizontal cross-piece (lintel ). The lintel must resist bending under its own weight.
Case Study: The Parthenon
The peak of Greek architectural refinement. The Greeks used the Doric Order here, a system of mathematical harmony that requires columns to be placed close together.
Tensile Strength
Stone lintels snap easily if posts are too far apart.
Analysis Prompt
Identify the Doric Order characteristics. Why do you think the Greeks favored this rigid, mathematical system?
Master Builder Notebook Worksheet Master Builder Notebook
Architecture Unit: Construction Methods
Student Name
01 Load Bearing Construction
Key Concept
Analysis: Mass/Space
02 Post-and-Lintel Construction
Tensile Strength
Analysis: Greek Orders
03 Corbeled Arch and Vault
"False" Arch Logic
Analysis: Relieving Triangle
04 Round Arch and Vault
Label Keystone/Voussoir
Analysis: Openness
05 Pointed Arch and Vault
Vertical Thrust
Analysis: Stained Glass
06 Dome
Oculus/Coffering
Analysis: Symbolism
07 Cast Iron Construction
Massive vs. Skeletal
Analysis: Public Opinion
08 Balloon-Frame Construction
Standardization
Analysis: Suburbia
09 Steel Frame Construction
Curtain Wall Logic
Analysis: Function
10 Reinforced Concrete
Rebar/Tensile
Analysis: Plasticity
Synthesis Reflection
How did construction evolve from Load Bearing (heavy mass) to Reinforced Concrete (plastic form)? How did the role of the architect change from a mason to a structural artist? Reference at least two specific stations.
Round Arch Station Printout Station 04
Round Arch
The Mechanic
The Romans perfected the arch using wedge-shaped stones (voussoirs) and a central keystone to lock it together via radial compression.
Keystone
Feat: Roman Aqueduct
The Pont du Gard shows how arches allow for massive structures that remain "open." Extended arches create barrel vaults .
⛲
• Material efficiency
• Vaulting evolution
• Massive scale
Analysis Prompt
Compare the visual weight of the Pont du Gard to the Parthenon. How does "openness" change how we perceive scale?
Master Builder Answer Key Answer Key
Teacher Resource: Structural Wonders
Station 01: Load Bearing Construction
Example: Great Friday Mosque (Djenné)
Key: Stacking/piling. Walls support weight; restricted windows/interiors.
Station 02: Post-and-Lintel Construction
Example: The Parthenon (Athens)
Key: Horizontal beam on vertical posts. Stone has low tensile strength.
Station 03: Corbeled Arch and Vault
Example: The Lion Gate (Mycenae)
Key: Relieving triangle; weight is shifted away from the lintel. Prevents the beam from snapping under pressure.
Station 04: Round Arch and Vault
Example: Pont du Gard (Nîmes)
Key: Voussoirs and Keystone. Openness makes engineering look lighter.
Station 05: Pointed Arch and Vault
Example: Reims Cathedral (France)
Key: Vertical thrust allows for height and glass walls (cage of light).
Station 06: Dome
Example: The Pantheon (Rome)
Key: Rotated arch. Oculus and coffering reduce weight at the crown.
Station 07: Cast Iron Construction
Example: Crystal Palace (London)
Key: Skeletal metal frame. Industrial look; rapid assembly using modular parts.
Station 08: Balloon-Frame Construction
Example: Standard American Suburbia
Key: Lightweight wood (2x4s). Standardized construction made housing affordable.
Station 09: Steel Frame Construction
Example: Wainwright Building (Sullivan)
Key: Steel cage supports building; walls are "curtain walls" (just skin).
Station 10: Reinforced Concrete
Example: Sydney Opera House (Utzon)
Key: Rebar provides tensile strength. "Liquid stone" allows organic/plastic forms.
Note on Synthesis: Students should identify the shift from internal mass (enclosed, heavy) to external skeletal support (open, light). Architects moved from being "master masons" to "structural engineers" and then "plastic sculptors" with concrete.
Pointed Arch Station Printout Station 05
Pointed Arch
The Mechanic
The pointed arch channels weight more directly down to the ground rather than pushing out. This allowed for much taller, thinner walls.
Case Study: Reims Cathedral
Soaring interiors were made possible by pointed arches and external flying buttresses , allowing for a "cage of light" filled with stained glass.
🏰
• Vertical thrust
• Divine luminescence
• Flying buttresses
Analysis Prompt
Gothic architecture "reaches toward the heavens." How does the visual geometry of a pointed arch encourage the eye to move?
Dome Station Printout Station 06
The Dome
The Mechanic
A dome is an arch rotated 360 degrees. It creates a vast interior space without center columns by distributing weight down to a circular base.
Case Study: The Pantheon
The concrete dome gets lighter as it nears the central oculus (opening). Weight was removed via coffering (recessed panels).
🏛️
• Concrete shell
• Weight reduction
• Spiritual oculus
Analysis Prompt
The dome creates a perfect sphere. How does the oculus affect the spiritual experience compared to a room with no windows?
Cast Iron Station Printout Station 07
Cast Iron
The Mechanic
Iron is far stronger than stone. It allowed for prefabricated parts to be bolted together into enormous skeletal frames that supported weight without thick, masonry walls.
Modular Logic
Case: The Crystal Palace
Joseph Paxton's greenhouse-inspired design used cast iron and glass to create a massive open space for the 1851 Great Exhibition in London.
• Skeletal frame
• Glass curtain
• Prefabricated
Analysis Prompt
Why did 19th-century people find this "industrial" look controversial? How does visibility of the skeleton challenge beauty?
Balloon Frame Station Printout Station 08
Balloon Frame
The Mechanic
Uses lightweight wood (2x4s) and mass-produced nails. It replaced heavy timber, allowing for rapid, affordable construction of houses.
Stick Frame
Case Study: Suburban Home
Enabled rapid urban expansion in America. It didn't require master masons—just standard parts and basic tools.
đźŹ
• Standard lumber
• Mass-produced nails
• Rapid assembly
Analysis Prompt
How does standardization change our living experience? Does this method value efficiency over art?
Steel Frame Station Printout Station 09
Steel Frame
The Mechanic
A steel cage supports the weight internally. This allows outer walls (curtain walls) to be just a "skin" of glass or brick hanging on the skeleton.
Case: Wainwright Building
Louis Sullivan proved that "form follows function." Steel allowed cities to grow up instead of out via high-rise skyscrapers.
🏢
• Form follows function
• Tripartite design
• Curtain walls
Analysis Prompt
What does "Form Follows Function" mean here? How does the steel frame dictate the look of modern cities?
Reinforced Concrete Station Printout Station 10
Concrete
The Mechanic
By embedding steel rods (rebar ) inside concrete, builders create a "liquid stone" strong in both compression and tension.
Rebar Support
Case: Sydney Opera House
Massive concrete "shells" allow for organic, sweeping curves that would be impossible with traditional masonry.
⛵
• Self-supporting shells
• Organic geometry
• Poured construction
Analysis Prompt
How does the ability to pour a building change geometry? Compare these "sails" to the rigid lines of the Parthenon.
