Sample
Summaries after sample
, U2: Purpose of structural members
U1: Structural Members
• Each truss part has a specific purpose. • Stiff rods or bars joined together. Example:
• Trusses withstand forces and provide support. roof trusses
• Ties & struts handle tension and compression • Truss = structure made of triangle units.
forces.
• King and Queen posts provide support and
compression forces. King Post Truss
• One vertical post, connects apex to bottom beam
Forces exerted • Simple truss with few members includes:
o Two diagonal members (rafters)
• Four main forces: compression, tension, shear,
Sample
o One horizontal beam (tie beam)
and torsion. U1: Frame • Struts added for heavy forces
• Compression forces push or compress materials. Structures • Rafters absorb and spread compression forces
• Tension forces pull or stretch materials. • Tie beam & king post absorb tension forces
U2: The purpose
− Ties withstand tension and hold parts together. • Used in simple roof trusses & bridges
• Shear forces move parts in opposite directions. of structural
Summaries after sample
− Rivets and bolts resist shear forces.
− Strong shear can break bolts.
− Force acts along entire member, not just joints.
• Torsion forces twist a structural element.
members
•
•
Two vertical posts.
Queen Post Truss
:
Can span longer distances than king post
− Rods and beams resist torsion forces. truss.
• Include struts and tie beam.
Internal Support • Rafters from triangular roof shape.
• Used in roofs and bridges.
• Ties and struts provide external support.
• Internal stiffening is used for extra strength.
• Cross-bracing uses diagonal support for more Frame Structure
compression and tension. Definition:
• Triangulation is another type of internal support Have a frame or skeleton it can be covered or left
open. Examples: pylons, windmills, houses, spider
webs, human body.
GR8 TECH T1-M1 Mind Map Spot On Copyright © www.summariessa.co.za (DO NOT COPY)
,Sample
Summaries after sample
, Sample
Summaries after sample
Summaries after sample
, U2: Purpose of structural members
U1: Structural Members
• Each truss part has a specific purpose. • Stiff rods or bars joined together. Example:
• Trusses withstand forces and provide support. roof trusses
• Ties & struts handle tension and compression • Truss = structure made of triangle units.
forces.
• King and Queen posts provide support and
compression forces. King Post Truss
• One vertical post, connects apex to bottom beam
Forces exerted • Simple truss with few members includes:
o Two diagonal members (rafters)
• Four main forces: compression, tension, shear,
Sample
o One horizontal beam (tie beam)
and torsion. U1: Frame • Struts added for heavy forces
• Compression forces push or compress materials. Structures • Rafters absorb and spread compression forces
• Tension forces pull or stretch materials. • Tie beam & king post absorb tension forces
U2: The purpose
− Ties withstand tension and hold parts together. • Used in simple roof trusses & bridges
• Shear forces move parts in opposite directions. of structural
Summaries after sample
− Rivets and bolts resist shear forces.
− Strong shear can break bolts.
− Force acts along entire member, not just joints.
• Torsion forces twist a structural element.
members
•
•
Two vertical posts.
Queen Post Truss
:
Can span longer distances than king post
− Rods and beams resist torsion forces. truss.
• Include struts and tie beam.
Internal Support • Rafters from triangular roof shape.
• Used in roofs and bridges.
• Ties and struts provide external support.
• Internal stiffening is used for extra strength.
• Cross-bracing uses diagonal support for more Frame Structure
compression and tension. Definition:
• Triangulation is another type of internal support Have a frame or skeleton it can be covered or left
open. Examples: pylons, windmills, houses, spider
webs, human body.
GR8 TECH T1-M1 Mind Map Spot On Copyright © www.summariessa.co.za (DO NOT COPY)
,Sample
Summaries after sample
, Sample
Summaries after sample
