Introduction

Question 1

Flexure:

Answer 1

The action of bending, or being bent.

Question 2

Diaphragm:

Answer 2

A horizontal planar element that transfers lateral forces to vertical elements, like columns, and ties the building elements together. Beams and slabs are often used as diaphragms.

Question 3

Monolithically:

Answer 3

Sometimes concrete members are cast monolithically, meaning they are cast together at the same time. So rather than cast the beam, then the slab, they can be formed and cast together as one piece.

Question 4

Reinforced Concrete:

Answer 4

Refers to concrete that contains reinforcing steel.

Question 5

Plain concrete:

Answer 5

Refers to unreinforced concrete, or concrete with minimal amounts of rebar.

Question 6

Compression members:

Answer 6

These members are structural elements that are compressed (downward force) as they support their applicable loads. Columns and peers are the best example of this.

Question 7

Flexural members :

Answer 7

Structural elements subject to flexural or bending forces. The beam resist downward flexural force, while a wall resists lateral flexural forces.

Question 8

Hydration:

Answer 8

The hydration process is cement forming chemical bonds with water molecules. Hydration starts the second water comes into contact with cement. It’s an exothermic process.

Question 9

Construction joints are:

Answer 9

The plane of separation between the placements of concrete.

Question 10

Laitance:

Answer 10

Light gray or white substance appearing on the top surface of concrete. Consists of cement particles, water, and fine particles of silt and clay from aggregates. Has no strength, prevents bond between new and older concrete placement.