CH. 10: WOODEN BEAMS

Question 1

• Structural element that carries transverse loads

Answer 1

WOODEN BEAMS

Question 2

-A piece of wood which is typically long and squared that can be used as a building material.

Answer 2

WOODEN BEAMS

Question 3

TYPES OF BEAMS:

Answer 3

1. SIMPLE BEAM
2. CANTILEVER BEAM
3. CONTINUOUS BEAM
4. OVERHANGING BEAM
5. FIXED END BEAM

Question 4

SIMPLE BEAM TYPES:

Answer 4

a. JOIST
b. RAFTER
c. STRINGER

Question 5

– directly support the floor boards.

Answer 5

JOIST

Question 6

• wooden beam that supports the roofing in an inclined position.

Answer 6

RAFTER

Question 7

• the ties are placed in bridge construction longitudinally.

Answer 7

STRINGER

Question 8

• It is a beam with only one support, either left or right end, that carries loads or weights on the unsupported section.

Answer 8

CANTILEVER BEAM

Question 9

• It is a beam that is supported or rests on two or more supports.

Answer 9

CONTINUOUS BEAM

Question 10

• a beam that is almost similar to a simple beam where in it supported at two points however the loads are carried on the extended portion.

Answer 10

OVERHANGING BEAM

Question 11

• a beam in which both ends supports are fixed.

Answer 11

FIXED END BEAM

Question 12

• an extent of pressure due to the overlaid weight or due to the external forces acting on the wooden beam

Answer 12

BEAM LOADING

Question 13

TYPES OF LOAD:

Answer 13

1. DISTRIBUTION OF THE WEIGHT IMPOSED
2. LENGTH OF TIME WHEN WEIGHT ARE IMPOSED

Question 14

DISTRIBUTION OF THE WEIGHT IMPOSED:

Answer 14

A. CONCENTRATED LOAD
B. OVERHANGING LOAD
C. DISTRIBUTED LOAD

Question 15

• It is a load resting at any point in the entire length of the beam.

Answer 15

CONCENTRATED LOAD

Question 16

• It is a load resting on the extended portion of the beam.

Answer 16

OVERHANGING LOAD

Question 17

• The weights are spread over the entire length.

Answer 17

DISTRIBUTED LOAD

Question 18

DISTRIBUTED LOAD:

Answer 18

1. UNIFORMLY DISTRIBUTED LOAD
2. UNIFORMLY VARYING LOAD

Question 19

LENGTH OF TIME WHEN WEIGHT ARE IMPOSED:

Answer 19

A. STATIC LOAD
B. PERMANENT LOAD (DEAD LOAD)
C. SHOCK LOAD (IMPACT LOAD)
D. ROLLING LOAD

Question 20

• a load which gradually increases in magnitude upon a stationary beam.

Answer 20

STATIC LOAD

Question 21

• It is a load where the forces act over a long period of time with no increase in magnitude (floor joist).

Answer 21

PERMANENT LOAD (DEAD LOAD)

Question 22

• load that is suddenly applied (ex. Wooden bat that hits the ball).

Answer 22

SHOCK LOAD (IMPACT LOAD)

Question 23

• load resulting from weights in motion or a load that is moving (ex. Weight imposed on a bridge by moving vehicles).

Answer 23

ROLLING LOAD

Question 24

• refers to the reactions which the wooden beam has obtained because of applied forces.

Answer 24

MOMENT

Question 25

• branch of mechanics that is concerned with the analysis of loads acting on physical systems (example is wood) that do not experience an acceleration, but rather, are in static equilibrium with their environment.

Answer 25

STATICS

Question 26

THREE BASIC LAWS OF STATICS:

Answer 26

a. Σ𝑉=0
b. Σ𝐻=0
c. Σ𝑀=0

Question 27

Σ𝑉=0:

Answer 27

This equation states that all the forces acting up must equal all the forces acting down.

Question 28

Σ𝐻=0:

Answer 28

This equation indicates that all the forces acting to the left must equal all the forces acting to the right.

Question 29

Σ𝑀=0

Answer 29

This equation involves rotation. It states that all the moments (or torques) trying to rotate an object in one direction must equal those trying to rotate it in the opposite direction.