Forces and Efforts
What effort compresses an object?
Compression
Which structure uses triangles?
Triangulated structure
What process uses triangles to make structures rigid?
Triangulation
Is a beam horizontal or vertical?
Horizontal
Triangles deform easily
False.
Triangles are very rigid shapes. They keep their form and do not deform easily, which is why they are used in structures and bridges
What effort stretches an object?
Traction / Tension
Massive structures are usually heavy or light?
Heavy
What shape is the most rigid polygon?
The triangle
Is a pillar horizontal or vertical?
Vertical
Cables resist compression
False
Cables resist traction/tension, not compression. If you push a cable, it bends or collapses.
What is force?
Something that can deform an object or change its movement
Which structure uses cables?
Hanging structure
What property prevents deformation?
Rigidity
What effort does a cable resist?
Traction / tension
Pillars support compression
True
Pillars are vertical elements that support the weight of structures, so they mainly work under compression.
What effort twists an object?
Torsion
Which structure uses beams and pillars?
Framed structure / Entramadas
What property prevents structures from breaking?
Resistance
What materials are commonly used in framed structures?
Wood, steel, and reinforced concrete
Massive structures are light
False
Massive structures are heavy and solid. They use thick walls, arches, or stone to resist forces.
What effort bends an object?
Flexion
Name ONE element of a massive structure
Walls, arches, or vaults
What property prevents structures from falling?
Stability
What element supports flexion and shear?
A beam
Buckling happens in slender compressed elements
True
Buckling happens when a long, thin element under compression bends sideways and becomes unstable.