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Assembly 1

Diagram of the Müller-Lyer illusion with two horizontal lines of equal length, each with arrowheads pointing in opposite directions on either end.

Technical drawing of a person installing or working with structural components, featuring three detailed sections on fastening or bracing elements, against a black background.

Technical drawing of a construction worker operating a crain on scaffolding

Illustration showing a crane lifting equipment through multiple floors with workers

Diagram of a mini crane lowering an object through a building floor, operated by a person.

Diagram of a mini crane lifting equipment through a building shaft with workers on different floors managing the process.

Technical drawing of a construction worker on scaffolding

Illustration of scaffolding design with safety equipment, cross-section view.

Diagram of the Müller-Lyer illusion with two horizontal lines of equal length, each with arrowheads pointing in opposite directions on either end.

Technical drawing of a person installing or working with structural components, featuring three detailed sections on fastening or bracing elements, against a black background.

Technical drawing of a construction worker operating a crain on scaffolding

Illustration showing a crane lifting equipment through multiple floors with workers

Diagram of a mini crane lowering an object through a building floor, operated by a person.

Diagram of a mini crane lifting equipment through a building shaft with workers on different floors managing the process.

Technical drawing of a construction worker on scaffolding

Illustration of scaffolding design with safety equipment, cross-section view.

Assembly 2

Diagram of plug and feather used for splitting stone

Illustration of a construction worker operating a spider crane extending its boom arm, with a second worker moving a table with wheels on a separate level.

Line drawing of a construction site with a spider crane on an upper level, operated by a person. A long cable extends down to a lower level where another person is managing a load on a cart.

Diagram showing a construction crane with detailed operation and movement

Diagram of two construction workers using a crane to lift a pole through multiple building levels.

Two construction workers on scaffolding, one on each level, with a black background.

Illustration of construction workers on scaffolding

Architectural drawing showing a worker pushing a cart on wheels and another worker on a platform in a building's interior section.

Technical drawing of two workers installing scaffolding between floors, with a cart on one level.

Diagram of plug and feather used for splitting stone

Illustration of a construction worker operating a spider crane extending its boom arm, with a second worker moving a table with wheels on a separate level.

Line drawing of a construction site with a spider crane on an upper level, operated by a person. A long cable extends down to a lower level where another person is managing a load on a cart.

Diagram showing a construction crane with detailed operation and movement

Diagram of two construction workers using a crane to lift a pole through multiple building levels.

Two construction workers on scaffolding, one on each level, with a black background.

Illustration of construction workers on scaffolding

Architectural drawing showing a worker pushing a cart on wheels and another worker on a platform in a building's interior section.

Technical drawing of two workers installing scaffolding between floors, with a cart on one level.

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