..... occurs where the soil is of loose, sandy nature and is saturated with water. ** Answ**
soil liquefaction
When air is in motion, it possesses ....... according to the following relationship (equation): **
Answ** kinetic energy
E=1/2MxV(squared)
Accommodating .............. and .............is the most critical aspect of engineering design. **
Answ** the type and magnitude of the forces to which the structure will be subjected.
To calculate the structural supports needed to allow a building to withstand common
forces, ......... are categorized and calculated. ** Answ** Loads
The direction of forces from loads acting on the interior of structural members is expressed
as.......... ** Answ** stress
The forces within a structural support system that resist applied loads are referred to as...........
** Answ** Reactions (R)
when a structural support system can support a load equal to or greater than the applied
loads,................... exists ** Answ** equilibrium
One common type of reaction is ........ within a horizontal structural component that is loaded
vertically. ** Answ** bending moment
..... is the most common load imposed on a structure via the weight of the building components,
contents and any occupancy activity. ** Answ** gravity
, Additional forces added to the structure will also increase the load that must be supported.
Examples: ** Answ** Vibration, Temperature, Shrinkage
Sources of vibration: ** Answ** natural- wind, seismic
Building related- ventilation system motors
external- vehicular traffic, trains
Temperature changes external to the building may cause........ ** Answ** peripheral
structural members to expand and contract at a rate different from internal members that are held
at a more constant temperature.
The three interior forces: ** Answ** tension, compression, and shear
.....tends to pull material apart. ** Answ** tension
..... tends to squeeze material ** Answ** compression
...... tends to slide one plane of material past an adjacent plane. ** Answ** shear
Loads create ....... in the bottom of a beam and .......... in the top. .......... is also created across the
vertical cross section of the beam ** Answ** tension stresses, compressive stresses,
shear stress
Unique stress are caused by external load alignments including .........., ........., or .......... **
Answ** axial, eccentric, torsional
A ratio of the failure point of a material to the maximum supportable design stress is added to the
minimum required strength as ............... ** Answ** A factor of safety
This added allowance adds tolerance for variations in the properties of the construction materials,
workmanship, and live and dead loads. ** Answ** Factor of safety