structures - equations Flashcards
0
Q
Calculate force over an area
A
F=P/A
P=total force
A=total area
1
Q
Calculate force on a retaining wall
A
F=wh^2/2
w=soil pressure
h=wall height
2
Q
Calculate moment
A
M = Pd P = force d= distance from fixed point to force location
3
Q
Moment for uniformly loaded beam
A
M=(wL^2)/8
M=moment
w=uniform load
L=span
4
Q
Calculate Section Modulus
A
S=(bd^2)/6 rectangles S=M/Fb (moment over bending stress) S=I/c I= moment of inertial c=given constant
5
Q
Calculate Moment of Inertia
A
I=(bd^3)/12
rectangles
6
Q
Calculate deflection - column
A
e=PL/AE e=deflecion P=force L=span A=area of cross-section E=modulus of elasticity
7
Q
Calculate deflection - beam
A
Δ=(5wL^4)/384EI
8
Q
Calculate Δt
A
Δ=eLΔt
Δ=change in length due to temp
e=coefficient of thermal linear expansion
