Chapter 1

Question 1

What are the 7 fundamental assumptions in RC design?

Answer 1

1) Compatibility of strains - ec=es. Strain in the concrete is the same as strain in the steel at same location. No slip
2) Plane sections remain plane
3) Max use of concrete strength ec=0.0035
4) Concrete is ineffective in tension
5) Flexural stress at a given point is dependent on the strain at that point
6) Na is found from equilbrium T=C
7) Use of the equivalent rectangular concrete stress distribution

Question 2

What is a transfer girder?

Answer 2

A girder that supports columns, located at a lower level. Used when an architect wants to increase the spacing of columns at the lower level.

Question 3

Define Analysis

Answer 3

compute stresses under a given load

determine resistance/capacity of members

Question 4

Define Design

Answer 4

computing the dimensions and reinforcement requirements of members

Question 5

What 2 requirements are satisfied from Analysis and Design

Answer 5

1) Stress strain compatibility.

2) equilibrium. Internal forces equal external forces

Question 6

Aim of Structural design is to ensure

Answer 6

Durability 
Strength
Serviceability
Economical
Aesthetically Pleasing