What construction techniques characterize Incan architecture?

What construction techniques characterize Incan architecture?

• A. Double-walled construction and mortarless stonework
• B. Mortared brick arches
• C. Wooden pin joinery
• D. Reinforced concrete and steel

Answer: (A)

Incan architecture is defined by stones that are cut to fit together so tightly that no mortar is needed. Often walls are built as two facing surfaces with a rubble core in between. This mortarless, double-walled construction makes the walls exceptionally solid yet flexible enough to absorb seismic movement, which is crucial in the Andes. The precision shaping of the stones allows them to interlock and distribute weight, preserving stability even without cement. That combination of finely fitted blocks and a double-wall arrangement is what sets this style apart. The other options describe techniques not typical of Inca building—mortared bricks, wood-based joinery, or modern materials like reinforced concrete and steel.

Incan architecture is defined by stones that are cut to fit together so tightly that no mortar is needed. Often walls are built as two facing surfaces with a rubble core in between. This mortarless, double-walled construction makes the walls exceptionally solid yet flexible enough to absorb seismic movement, which is crucial in the Andes. The precision shaping of the stones allows them to interlock and distribute weight, preserving stability even without cement. That combination of finely fitted blocks and a double-wall arrangement is what sets this style apart. The other options describe techniques not typical of Inca building—mortared bricks, wood-based joinery, or modern materials like reinforced concrete and steel.