Download ECIV 315 Exam 2 Questions with Complete Solutions and more Exams Advanced Education in PDF only on Docsity!
ECIV 315 Exam 2 Questions with Complete Solutions
Continuity Correct Answer-Occurs in slabs, what happens in one span effects the other spans. Assumptions for analysis of continuity Correct Answer-Assume structural elements are linear elastic Look up moment coefficients in ACI tables Look up shear equations in ACI tables One way slab aspect ratio Correct Answer-(a/b)> What direction attracts load in slabs? Correct Answer-The stiffest direction Two way slab aspect ratio Correct Answer-(b/a)< Typical Floor systems Correct Answer-One way, two way, flat plate, flat slab (drop panels), slab on deck (pan deck) What controls the thickness of the slab? Correct Answer-Shear (no reinforcement equation) what beam width do we assume for slabs? Correct Answer-12 inches = 1 foot
What is the clear cover for slabs? Correct Answer-0.75 inches What is the clear cover for beams? Correct Answer-1.5 inches How is the average area of steel measured in a slab? Correct Answer- As/ft width How to solve for Ey Correct Answer-Ey=fy/E How to solve for depth to the neutral axis (x)/ Correct Answer-a/beta When solving for shear Vc do we enter units of f'c in psi or ksi Correct Answer-psi! What are 90 degree cracks in beam caused by? Correct Answer-Max moment, cracks occur in the center of beam What are 45 degree cracks in beam caused by? Correct Answer-Max shear, cracks occur at the ends of the beam Does tension or compression cause 45 degree cracking? Correct Answer-Tension
What does Es equal if the steel has yielded? Correct Answer- 0.003>0. What alpha do you use for ties? Correct Answer-0. What alpha do you use for sprials? Correct Answer-0. What does alpha account for in reduced axial nominal capacity equation? Correct Answer-Accidental eccentricity What phi do you use for spirals? Correct Answer-0. What phi do you use for ties? Correct Answer-0. What is the lower end of the allowable reinforcement ratio and what does it account for? Correct Answer-0. accounts for creep What is the higher end of the allowable reinforcement ratio and what dos it account for? Correct Answer-0. ensures the column isn't too crowded
What are the steel design philosiphys? Correct Answer-AISC, construction manual, LRFD What are some pros of steel? Correct Answer-Good strength to weight ratio, constructibility, no framework, recycable What are some cons of steel? Correct Answer-Corrosion, melts, fatigue sensitive, buckling What are some common types of steel? Correct Answer-Carbon steel, high strength low alloy (HSLA), corrosion resistant (stainless steel), quenched and tempered, and fine tune performance What section is available for HSLA (A992) Correct Answer-I shapes and WT sections What sections are available for A36? Correct Answer-Angles or double angles and channels or double channels What assumption do we make for the stress strain response in steel? Correct Answer-Elastic perfectly plastic Does steel have the same response in tension and in compression? Correct Answer-Yes
