Structure

Question 0

What are the three ways a structure may give in to gravity?

Answer 0

• if it is sitting on something that is not strong enough, the ground below will fail.
• if the skeleton of the structure is weak, it will not support itself,the weight of the structure itself is the ‘dead load’
• if the live load on the structure is greater than expected, it will collapse.

Question 1

What causes structures to move?

Answer 1

Gravity

Question 2

The two basic forces that individual structural components are subjected To are?

Answer 2

Compression-pushed from both ends

Tension-pulled upon

Question 3

What conditions may result in inadequate lateral support?

Answer 3

The walls will deflect inward

Question 4

Foundations should extend at least how far above grade ?

Answer 4

4 to 6 inches

Question 5

What are two common footing problems with piers?

Answer 5

Inadequate footing and pier base not below the frost line

Question 6

What limits the inspection of crawl spaces ?

Answer 6

• entry size
• lack of lighting
• cramped work space

Question 7

What is the function of beams ?

Answer 7

To carry floor and wall loads horizontally to the foundations , walls or posts

Question 8

Where are joist hangers required ?

Answer 8

Where joist can not rest on a support

Question 9

What two functions do bridging and bracing perform?

Answer 9

Restrain the joists from twisting and to transmit loads from one joist to the Next

Question 10

What materials were/are commonly used in sub flooring?

Answer 10

• one inch wood boards
• plywood
• oriented stand board (OSB)

Question 11

What is the difference between balloon framing and platform construction?

Answer 11

• in balloon framing,the wall systems are erected before the floor systems
• in platform framing the floor system is erected before the wall system
• in balloon framing the wall framing extends from the foundation to the roof
• in platform framing the wall framing is built on floor at a time

Question 12

What purpose do weep holes serve?

Answer 12

• To allow the rain water to drain out of the 1” air space

- balance the pressure on both sides of the brick

Question 13

What is the difference between post- and-beam construction and conventional wood-frame construction.

Answer 13

Post and beam construction uses a few loathe members for support where conventional construction uses many smaller members.

Question 14

What function do lintels perform?

Answer 14

To transfer The load above an opening In a masonry structure

Question 15

Steel lintels on masonry walls should be at least how many inches wider than the opening on either side

Answer 15

6 inches

Question 16

Where should collar ties be attached to the rafters:

Answer 16

Near the middle

Question 17

What function do knee walls perform ?

Answer 17

Support the roof rafters and prevent sagging.

Question 18

What concern, other than structural,arises with a misaligned-aligned chimney ?

Answer 18

• Heat gets near combustible materials
• Smoke and CO can re-enter the house
• Creosote can collect in the attic

Question 19

What can one do to minimize the risk if termite infestation?

Answer 19

Breaking earth to wood contact

Question 20

What causes wood rot?

Answer 20

• Improper ventilation

- Too much moisture

Question 21

A 2”x6”@16” on center can safely span ?

Answer 21

Depends on species of wood

Question 22

What is the best way for steel girders (I-beams) in basement concrete wall pockets to be installed?

Answer 22

1/2” gap on 3 sides

Question 23

How are hurricane ties attached at the roof structure ?

Answer 23

Inside edge at top plate to rafter

Question 24

CDX is what type material?

Answer 24

Exterior grade plywood

Question 25

Step cracks in masonry wall at top corner of a window angled up and away are caused by

Answer 25

Rusted lintel