Engineer Civil Engineering case studies
Engineer Civil Engineering · Put your knowledge to work in context.
The PE Civil is one of the engineering exams administered within the NCEES examination system, which NCEES describes as the exams engineers and surveyors must typically pass on the path to professional licensure, alongside education and work experience requirements. The credential itself is issued by a state licensing board, not by NCEES; NCEES develops and administers the exams and maintains the member licensing board directory through which candidates identify their jurisdiction's requirements. The Engineer Civil Engineering case studies are 5 cases and about 4,531 words.
1Mat Foundation Pour Exceeding the 70 °C Peak Hydration Limit
A 30-storey tower rests on a 2,400 m³ mat foundation, 2.2 m thick, cast in one continuous pour in July with an ambient temperature of 33 °C. The approved mix contains 380 kg/m³ of binder (Type I/II cement with 15 % slag replacement) at w/b = 0.42, and concrete arrives on site at 30 °C.
901 words, about 5 min2Pile Load Tests Below the Specified Factor of Safety
Three static compression load tests were carried out on 750 mm diameter bored piles, 26 m long, founded through dense sand into stiff clay, for a single-storey warehouse. The design working load is 2,300 kN per pile and the specification requires a factor of safety of 2.5 on ultimate capacity, which means a minimum interpreted ultimate capacity of 5,750 kN.
891 words, about 4 min3Office-to-Data-Centre Conversion With Low Core Strengths
A 1975 six-storey reinforced concrete office building is being converted to a data centre. The original drawings specify 27.6 MPa concrete and Grade 420 reinforcement.
898 words, about 4 min4Wet-Night Run-Off Crash Cluster on a 250 m Radius Curve
A two-lane rural arterial carries an AADT of 9,200 with 12 % heavy vehicles and a posted speed of 80 km/h. A 180 m long horizontal curve has a radius of 250 m, 4 % superelevation, 3.6 m lanes, 2.4 m shoulders and no transition spiral; both approaches are long tangents.
902 words, about 5 min5Winter Nitrification Failure at a 20 Mgal/d Activated Sludge Plant
A 20 Mgal/d (75,700 m³/d) activated sludge plant must meet a monthly average effluent ammonia limit of 1.5 mg/L year-round. In winter the mixed liquor temperature falls to 13 °C.
939 words, about 5 min