TOPIC 1C

Question 1

Key Factors: Material strength (compressive or tensile), length, and slenderness

Answer 1

Axial Force (N)

Question 2

___________ cross-sectional areas are required for higher axial loads.

Answer 2

Larger

Question 3

Key Factors: Material’s shear strength, beam depth, and span

Answer 3

Shear Force (V)

Question 4

The member’s depth h significantly influences its ability to resist shear forces, as shear stress t = V/b(h)

Answer 4

Shear Capacity

Question 5

_________ in depth can reduce the required width b for the member.

Answer 5

Increase

Question 6

May be required for higher shear loads.

Answer 6

Shear Reinforcement stirrups

Question 7

Key Factors: Moment of inertia, section modulus, and material’s flexural
strength

Answer 7

Bending Moment (M)

Question 8

The required section modulus S is determined from the bending moment M using S = M/fy’, where fy’ is the yield strength of the
material.

Answer 8

Moment Capacity

Question 9

___________ the depth of the beam increases the moment capacity significantly

Answer 9

Increasing

Question 10

_________ and ________ dictate whether deeper or wider sections
are needed

Answer 10

Span length, load conditions

Question 11

Key Factors: Polar moment of inertia and material’s shear strength.

Answer 11

Torsional Moment (T)

Question 12

For members subjected to torsion, the ______ of the cross-section is critical

Answer 12

Polar Moment of Inertia (J)

Question 13

Are more efficient at resisting torsion due to uniform distribution of material

Answer 13

Circular Sections

Question 14

Provides guidelines and standards for designing structural members like beams, columns, slabs, and foundations to ensure the safety and stability of buildings.

Answer 14

NSCP 2015

Question 15

The specific sizes of structural members
depend on factors such as?

Answer 15

1. Load Requirements
2. Span Lengths
3. Building Use
4. Material Strength

Question 16

A general rule of thumb is that the beam depth should be _______ to _______
of the span

Answer 16

1/10, 1/12

Question 17

For a span of ________, the beam depth would be approximately________.

Answer 17

4m, 400mm

Question 18

Typically, the width of the beam is ______ to ______ times the depth.

Answer 18

0.4, 0.6

Question 19

For a beam with a depth of 400 mm, the width could range from ______ to ______.

Answer 19

160mm, 240 mm

Question 20

The minimum size for beams specified by NSCP 2015, depending on seismic
requirements (Chapter 5), generally should not be less than ________ in width
and _______ in depth, especially for buildings in seismic zones

Answer 20

200mm, 400mm

Question 21

For low-rise buildings (1 to 3 stories), a column size of _______ is commonly used

Answer 21

300mm x 300mm

Question 22

For medium to high-rise buildings (4 to 10 stories or more), column sizes typically range from ________ to ________ or larger, depending on the loading and building height.

Answer 22

400mm x 400mm, 600mm x 600mm

Question 23

The minimum column dimension in
seismic zones is typically _______.

Answer 23

300mm

Question 24

Columns should have at least ___ longitudinal bars for square or rectangular columns and at least ___ longitudinal bars for circular
columns.

Answer 24

4, 6

Question 25

Typically, the thickness is L/20, where L is the shorter span

Answer 25

One-Way Slabs

Question 26

For a 4-meter span, the slab thickness would be around _______.

Answer 26

200mm

Question 27

Typically, the thickness is L/30, where L is the longer span

Answer 27

Two-Way Slabs

Question 28

For a _______ span, the slab thickness could be around 200 mm or more.

Answer 28

6 meter

Question 29

For residential floors, a minimum thickness of ______ (5 inches) is common.

Answer 29

125mm

Question 30

For commercial floors with higher live loads, slab thickness could range from _____ to ____ (6 to 8 inches) or more depending on the load

Answer 30

150mm, 200mm

Question 31

Typically, the minimum thickness of footings is _______ (12 inches), but the size depends on the soil bearing capacity and column load.

Answer 31

300mm

Question 32

For heavier loads or poor soil conditions, combined footings or mat foundations may be required, with thicknesses ranging from ____ to _____ or more.

Answer 32

500mm, 1000mm