Glencoe: Section 63

Question 1

Construction process of post and beam structure

Answer 1

starts with foundation
entire structural frame is assembled next including roof
the frame is self bracing, rigid enough without sheathing
frame is covered using structural insulated panels.
continues with standard sequence construction of doors, windows, mechanical, and interior finish

Question 2

Disadvantage of timber framing

Answer 2

high wood working skill is required, some joints are complex

Question 3

Most desireable aspects of modern timber frame is

Answer 3

the structure, typically exposed on the inside of the house as in an exposed frame. Structural as well as decorative

Question 4

Structural insulated panels (SIPs) (foam-core panels)

Answer 4

consists of 3 1/2” thick expanded polystrene (EPS) foam insulation between sheets of exterior plywood or OSB.

Question 5

Panels size of SIPs

Answer 5

4’x8’ to 8’x28’.

Question 6

How are SIPs fanstened together

Answer 6

2x4 or 2x6 splines.

Question 7

Spline

Answer 7

a thin strip of wood used to reinforce a joint.

Question 8

Depending on how they are designed, SIPs may be

Answer 8

structural or non structural. In a timber frame house they are not structural because the frame is carrying all the loads

Question 9

Pro of SIP panel wall

Answer 9

speeds up construction process and forms the interior wall and exterior sheathing at the same time.

Question 10

Con of SIP panel wall

Answer 10

Difficult to run wire through

Question 11

Manufactured housing

Answer 11

Houses built completed or partially on assembly lines.

Question 12

Shear wall

Answer 12

a wall designed to resist lateral (sideways) forces.

Question 13

One way to create shear wall

Answer 13

using specific nail spacing to attach sheathing is one way to create a shear wall.

Question 14

It is crucial to provide shear strength at

Answer 14

corner of house

Question 15

The top shear wall must be fastened to the

Answer 15

second-floor framing.

Question 16

The bottom of the shear wall must be fastened to the

Answer 16

sill plate which is bolted to foundation.

Question 17

Hurricane straps

Answer 17

used to reinforce connection between roof and wall framing.

Question 18

Hold-down anchors

Answer 18

steel brackets that prevent wall from toppling. Installed at each corner of house. Attached to foundation with anchor bolts and framing with lag screws.

Question 19

Load:

Answer 19

type of force that creates stresses on structure,

Question 20

Design valueL

Answer 20

number assigned to how well a particular wood sresists stress.

Question 21

Extreme fiber stress in bending

Answer 21

When a load is applied to a joist, header or beam, it bends. This produces tension sresses in the wood farthest from the load and compression stresses closest to the load

Question 22

Tension Parallel to Grain

Answer 22

when the ends of a piece of wood are pulled in opposite directions, tension along the grain results. This might occur in a floor joist attached to two walls that are bowing outward.

Question 23

Horizontal Shear

Answer 23

Shear stresses occur where two portions of the wood are trying to slide past each other in opposite directions. A deep heavily loaded beam might experience shear stresses near the center line of the wood.

Question 24

Compression Perpendicular to the Grain

Answer 24

This occurs when the wood rests on supports, An example would be a joist (D in types of stresses) Any load on the wood tends to crush wood fibers at bearing points. This problem can be reduced by increasing the bearing area.

Question 25

Compression Parallel to the Grain

Answer 25

This occurs when loads are supported on the ends of the wood. This is typical of studs, posts, and columns. The resulting stresses affect the wood fibers uniformly along the full length of the wood.

Question 26

Modulus of Elasticity

Answer 26

This is the ratio showing the amount that wood will bend in proportion to its load. The actual amount of bending is called deflection. An example would be how “Springy” a floor is when walked on.

Question 27

Span table

Answer 27

lists the maximum spacing allowed between different sizes of joists or rafters.

Question 28

On Center

Answer 28

type of spacing which refers to the distance from the center line of one of the structural members to the center line of the closest member.

Question 29

How can a carpenter find the right spacing for a specific specie and grade of wood

Answer 29

use span tables

Question 30

Loads on a structure are divided into two types

Answer 30

live loads and dead loads

Question 31

Dead load

Answer 31

total weight of the building including structural frame and anything permanently attached.

Question 32

Live load

Answer 32

non permanently attached objects such as furniture and people.