EXAC Exam 3 ACTUAL Exam Questions and CORRECT Answers

EXAC Exam 3 ACTUAL Exam Questions
and CORRECT Answers
Static Load vs Dynamic Load - CORRECT ANSWER - 1. Static Load: Applied slowly
2. Dynamic Load: Applied suddenly


6 Types of static loads - CORRECT ANSWER - 1. Live load (Occupant / Snow)
2. Dead load (self weight / mech)
3. Settlement loads (diff settlement)
4. Ground pressure (soil mass)
5. Hydrostatic Pressure
6. Impact load


2 Types Dynamic Loads - CORRECT ANSWER - 1. Wind
2. Earthquake


Shear Strength Soil - CORRECT ANSWER - Ability to resist displacement when forces
applied
1 - Cohesive soils (clay, silt) retain strength when unconfined (high angle of repose)
2 - Non cohesive soils (gravel, sand) require confined forces and have shallow angle of repose


Structural stresses - CORRECT ANSWER - 1. Compression
2. Tension
3. Shear
4. Bending
5. Torsion (twisting)


Heating and cooling loads - CORRECT ANSWER - 1. Heating load: Heat loss btu/hr

, 2. Cooling load: Heat gain btu/hr


Test for soil permeability - CORRECT ANSWER - Percolation test



Septic system distances - CORRECT ANSWER - Tank and Field
1. From wells - 100' (30m)
2. From Streams - 50' (15m)
3. From PL or Buildings - 10' (3m)


Septic Tank Drainage - CORRECT ANSWER - 1 - Drainage field: Absorption trenches
that drain into field, seeps into soil
2- Seepage Pit: Use when soil is absorbent and water table 2'-0" below pit
3 - Subsurface sand filter: Use when the other two can't be used. Distribution pipes surrounded
by graded gravel


Heating systems - CORRECT ANSWER - 1. Forced air
2. Hot water
3. Electrica
4. Radiant
5. Active solar


Forced Air Heating - CORRECT ANSWER - Pros:
- Most commonly used
- cost effective
- simple
- easy to service, versatile
Cons:
- Space required,