Structural Forms Flashcards
In a cable, load is transferred by ________
Axial Tension
In a cable, vertical force is developed by ________
the vertical component of axial tension
In a cable, moment is developed by ________
The force generated by; the horizontal component of axial tension, Tx, and the horizontal reaction force, Ray, separated by displacement, h (or sag).
What are some of the other considerations in a cable?
A horizontal reaction is induced at supports.
Large deflections are required (to generate a moment)
How can you reduce horizontal reactions in a cable?
Allow for some swag in the cable
More tension in the cable allows there to be less _____
Sag
In a truss, load is transferred by ________
axial forces in either tension or compression
In a truss, vertical force is developed by ________
the vertical compression of force in diagonal members
In a truss, moment is developed by ________
the couple produced by oppositely acting forces in top and bottom chords, separated by the depth of the truss.
In a beam, load is transferred by ________
normal and shear stresses
In a beam, vertical force is developed by ________
shear stresses on the cross section
In a beam, moment is developed by ________
- variation of normal stress over the cross section
- change in sign of the compression and tension resultants, separated across the neutral axis.
The mode by which force is transmitted is a function of the ___________
member’s form.
What are the different types of structural forms?
Flexural Form (Beams), Truss Form, Tension Form (Cables), Compression Form (Arches), Planar Surface Form (Plates, Slabs, Diaphragms)
