Reinforced Concrete Design

Question 1

The maximum moment of a simply supported beam whose span length is L, in meter, carrying a uniformly distributed load of w in N/m

Answer 1

wL2/8

Question 2

Loads that are movable or replaceable on structure are known as

Answer 2

Live Load

Question 3

It is one in which the lateral stiffness is less than 70% of the stiffness of the storey above it.

Answer 3

Soft storey

Question 4

A horizontal or nearly horizontal system acting to transmit lateral forces to the vertical resisting elements. It includes horizontal bracing system

Answer 4

Diaphragm

Question 5

These are inert material used in concrete which occupy more than 75% of the volume of the hardened concrete product

Answer 5

Debris

Question 6

Steel elements such as wire, cables, bars, rods, or strands of wires or a bundle of such elements used in pre-stressed concrete structures are called

Answer 6

Tendons

Question 7

What method of prestressing in which tendons are tensioned before concrete is cast in place?

Answer 7

Pre-tensioning

Question 8

This refers to the substance other than aggregate, cement or water added in small quantity normally less than 5% of the weight cement, to alter the properties of the concrete mix of the hardened solid

Answer 8

Admixture

Question 9

The minimum bend diameter for 10mm dia through 25mm dia bars

Answer 9

6db

Question 10

Bars larger than __mm shall not be in bundles in beams

Answer 10

36mm

Question 11

Minimum concrete cover cast against and permanently exposed to earth

Answer 11

75mm

Question 12

in ultimate strength design , the strength reduction factor diameter for shear and torsion

Answer 12

0.85

Question 13

The minimum one way slab thickness for a BOTH ends continuous slab

Answer 13

L/28

Question 14

Deep simple span flexural members has overall depth to clear span ratio greater than…

Answer 14

0.60

Question 15

Before commencing the evacuation work, the person making the evacuation shall notify in writing the owner of the adjoining building not less than __ before such excavation is to be made.

Answer 15

10days

Question 16

The maximum spacing of ties and spirals in a driven pre-cast concrete pile center to center

Answer 16

150mm

Question 17

Aviation control tower fall to what type of occupancy

Answer 17

Essential Facilities

Question 18

The allowable deflection for any structural member loaded with live load only

Answer 18

L/360

Question 19

The allowable deflection for any structural member loaded with dead load and llve load only

Answer 19

L/240

Question 20

Spacing for a lateral support for a beam shall not exceed ___times the least width of b of compression flange or face

Answer 20

50

Question 21

It is an isolated column of masonry or a bearing wall not bonded at the sides into associated masonry, when its horizontal dimension measured the right angles or the thickness does not exceed four times its thickness

Answer 21

pier

Question 22

Method of prestressing in which tendons are tensioned after concrete has hardened

Answer 22

post tensioning

Question 23

A material, other than aggregate, cementitious material or water, added in small quantitites to the mix in order to produce some (desired) modifications, either to the properties of the mix of the hardened product

Answer 23

admixture

Question 24

Simply supported beam, L meters long, carrying a uniformly distributed load of w in N/m produces a maximum shear force of….

Answer 24

wL/2

Question 25

Structures that are subjected to transverse loads are called

Answer 25

beams

Question 26

Members that are generally vertical, subjected to compressive loads, sometimes with bending moments, are called:

Answer 26

columns

Question 27

These are referred to permanent loads or unmovable loads

Answer 27

Dead loads

Question 28

Loads that change position within the span of a beam in short amount of time. These loads are often exemplified by wheel loads

Answer 28

Moving loads

Question 29

It is synonym to bending stress

Answer 29

Flexural stress

Question 30

Adheerence between materials such as bricks/mortar, or piles of felt, of between felts and other elements fo roof systems, which use bitumen or other materials as the cementing agent

Answer 30

Bond

Question 31

A wall that resists horizontal forces applied in the plane of the wall

Answer 31

Shear wall

Question 32

If the ratio of the short direction to the long direction of a slab is less than 0.5, then the slab is considered:

Answer 32

one way slab

Question 33

In ultimate strength design, the reduction factor diameter for bending stress is

Answer 33

0.9

Question 34

The actual strain by which a concrete fails is 0.004. For safety purposes, the ACI code allows designers to use

Answer 34

0.003

Question 35

The minimum clear cover allowed by the code for slabs, not exposed to weather is

Answer 35

20mm

Question 36

A numver 8 ( #8 steel reinforcing bar has a diameter of

Answer 36

25mm

Question 37

What do you call those structures that are necessary for emergency operations subsequent to a natural disaster

Answer 37

essential facilities

Question 38

It is one in which the lateral stiffness is less than 70% of the stiffness of the story above or less than 80% of the average stiffness of the three storys above

Answer 38

soft story

Question 39

A structural system without a complete vertical load carrying space frame

Answer 39

bearing wall system

Question 40

The minimum reinforcing steel for spiral columns allowed by the ACI Code is

Answer 40

6-16mm dia bars

Question 41

The ACI Code states that the bars larger than #11 should not be bundled in beams or girders. This means that one should not bundle the steel bars if the diameter is larger than

Answer 41

32mm

Question 42

The steel ratio, p for spiral columns ranges from

Answer 42

0.01 - 0.08 1% - 8%

Question 43

Which is the correct factored load for Strength Design Method

Answer 43

1.4 DL + 1.7 LL

Question 44

It is defined as the unit strength of a material

Answer 44

Stress

Question 45

The stress developed when the applied load causes adjacent sections within a body to slide past each other

Answer 45

Shearing stress

Question 46

It is the contact pressure developed between two bodies

Answer 46

Bearing stress

Question 47

The stress induced as a result of restrained deformations due to changes in temperature

Answer 47

Thermal stress

Question 48

The actual stress in a material under a given loading

Answer 48

Working stress

Question 49

Allowable maximum safe stress that a material can withstand

Answer 49

allowable stress

Question 50

The temperature bars are 10-mm diameter steel bars placed on top and perpendicular to the main reinforcement of

Answer 50

one way slabs