Ncees Practice Tear Word Problems Flashcards
Which of the following is not a stormwater erosion classification?
Rushing erosion
Which of the following statements regarding lateral earth pressure is correct
Lateral strain required to fully mobilize passive soil pressure is considerably larger than the lateral strain required to fully mobilize the soil active pressure
Minimum factor of safety against rotational failure for permanent slopes under long term non seismic cons influencing the occupied structure is closest to
1.5
What is required for proper soil classification using uscs or aashto soil classification systems are
Grain size distribution and atterberg limits
Standard penetration test is widely used and simple and economic means of obtaining
An indirect measurement of the relative density of cohesionless soils
Fatigue in steel can be a result of
A reduction in strength due to cyclical loads
Basic assumption of the ration method is that peak runoff for a given rainfall intensity;
Occurs if rainfall duration is equal or greater than time or concentration
Designing elevated water tank - match system requirements to tank design parameters they influence
Max elevation- TDH & flight path
Min elevation- service pressure
Volume- fire flow duration & chlorine residual
Another way of saying Buoyant weight
Effective unit weight
Equivalent weight of caco3 (calcium carbonate)
50
Unit hydrograph (1” rain)
U= runoff Q / rainfall P
What is the best hydraulic section?
Table p357 based on cross section shape
In outlet controlled design which of the following components of headloss component
Entrances, exit, friction
Subcritical and supercritical flow are controlled by
Subcritical is controlled by downstream
Supercritical is controlled by upstream
What is the purpose of Protozoa in waste water treatment?
Protozoa are polishers
