FE Exam Formulas Ch. 11 Flashcards
Purpose of…
Static Equilibrium
Purpose of…
Static Equilibrium
Purpose of…
Static Equilibrium
Purpose and Variables of…
Truss Deflection
deltajoint=joint displacement at point of application
fi=force in member i caused by unit load
deltaL=change in length caused by external effect
Purpose and Variables of…
Frame deflection
delta=displacement at point of application of unit load
mi=moment equation in member i caused by unit load
Mi=moment equation in member i caused by loads applied to frame
Li=length of member i
Ii=moment of inertia of member i
Purpose and Variables of…
Euler’s Buckling Load
Pcr=Euler’s buckling load
sigmacr=Euler’s buckling stress
E=member modulus of leasticity
I=member moment of inertia
l=member unbraced length
r=radius of gyration
K=effective length factor
Kl=effective length of column
Purpose and Variables of…
Euler’s Buckling Stress
Pcr=Euler’s buckling load
sigmacr=Euler’s buckling stress
E=member modulus of leasticity
I=member moment of inertia
l=member unbraced length
r=radius of gyration
K=effective length factor
Kl=effective length of column
Purpose of…
Shear Capacity
Purpose of…
Ultimate Shear Force
Purpose of…
Critical Stress
Purpose of…
Design Compressive Strength
Purpose of…
Tension Force
Purpose of…
Height of Whitney Stress Block
Purpose of…
Depth of Whitney Stress Block
Purpose of…
Compressive Strength of Concrete
Purpose of…
Moment Capacity
Purpose of…
Nominal Moment Capacity
Purpose of…
Effective Depth
Purpose and Variables of…
Total Nominal Shear Capacity
Vc=shear strength of concrete
Vs=shear strength of steel
Purpose of…
Shear Strength of Concrete
Purpose of…
Shear Strength of Steel
Purpose and Variables of…
No Stirrups for Shear Demand
Purpose and Variables of…
Stirrups for Shear Demand
Purpose of…
Design Column Strength
Purpose of…
General Design Shear Capacity
Purpose of…
Resulting Bending Moment for Each Critical Section
D
Dead Loads
E
Earthquake Loads
L
Live Loads (floor)
Lr
Live Loads (roof)
R
Rain Load
S
Snow Load
W
Wind Load
Load that is permanent in magnitude and location.
Dead Load
Examples of this load include asphalt on a bridge deck, a tile floor, and light fixtures.
Dead Load
Load that varies in magnitude and location to account for the use of the structure by people, vehicles, and other temporary loads.
Live Load
Examples of this load include furniture, appliances, and vehicular traffic.
Live Load
Load that varies in magnitude, location, and geographical location.
Environmental Load
Examples of this load include wind, rain, snow, and seismic loads.
Environmental Load
Purpose and Variables of…
(r+f)=3n
Determine if a System is Determinate
r=external reaction forces
f=internal forces
n=rigid members in the system
Purpose and Variables of…
ie=(r+f)-3n
Degree of Indeterminancy
r=external reaction forces
f=internal forces
n=rigid members in the system
How can a system determined to be stable?
It cannot be free to move in any direction
What types of reaction(s) does a roller support?
1 Vertical
What types of reaction(s) does a Pin or Hinge support?
1 Vertical
1 Horizontal
What types of reaction(s) does a fixed connection support?
1 Vertical
1 Horizontal
1 Moment
What type of support is this?
Roller
What type of support is this?
Pin or Hinge
What type of support is this?
Fixed Connection
Purpose and Variables of…
3m+r=3j+c
Determine if a System is Determinate
r=external reaction forces
m=rigid members in system
j=joints in the system
c=internal condition equations
How many equilibrium equations does a frame with an internal hinge provide?
1
