Timber framing code 2008:

Floor Framing.

Specification:• Timber framed construction • Conventional timber framed roof• Roof pitch 22.50• Roof covering steel roof decking, 10kg/m2• Eaves width 600mm• Brick piers supporting bearers• Bearers 150 x 75 Unseasoned

Hardwood, F11• Joists 100 x 50 Unseasoned

Hardwood, F11• Fitted timber floors Utility grade 19mm T&G

Radiata Pine• Wet area flooring 19mm CSR structafloor

particleboard

Remember the following information:

– Type of flooring determines the MAX SPACING of floor joists

– SPAN of joists determines the SPACING of bearers

– SPAN of bearers determines SPACING of piers

Member Rule

Table

Size Comments

Timber Species______?______

Timber grade______________

Supplement #_____________

Roof Construction__________

Roof Covering_____________

Flooring system

General area______________

Timber species____________

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade_______?_______

Supplement #_____________

Roof Construction__________

Roof Covering_____________

Flooring system

General area______________

Timber species____________

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #______?_______

Roof Construction__________

Roof Covering_____________

Flooring system

General area______________

Timber species____________

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction_____?_____

Roof Covering_____________

Flooring system

General area______________

Timber species____________

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering______?_______

Flooring system

General area______________

Timber species____________

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area_______?_______

Timber species____________

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area: Structural strip

Timber species______?______

Grade___________________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area: Structural strip

Timber species: Radiata Pine

Grade_________?__________

Thickness________________

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area: Structural strip

Timber species: Radiata Pine

Grade: Utility

Thickness_________?_______

Flooring system

Wet areas________________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area: Structural strip

Timber species: Radiata Pine

Grade: Utility

Thickness: 19mm

Flooring system

Wet areas______?__________

Thickness________________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area: Structural strip

Timber species: Radiata Pine

Grade: Utility

Thickness: 19mm

Flooring system

Wet areas: CSR Structafloor

Thickness______?__________

Member Rule

Table

Size Comments

Timber Species: Hardwood

Timber grade: F11

Supplement #: 13

Roof Construction: Rafters

Roof Covering: Steel sheeting

Flooring system

General area: Structural strip

Timber species: Radiata Pine

Grade: Utility

Thickness: 19mm

Flooring system

Wet areas: CSR Structafloor

Thickness: 19mm

Flooring

Flooring Clause____?__

Table_________

Max joist spacing__________

Flooring

Flooring Clause 5.7

Table ?

Max joist spacing

Flooring

Flooring Clause 5.7

Table 5.3

(pg. 56)

Max joist spacing ?

Flooring

Flooring Clause 5.7

Table 5.3

Max joist spacing 510

Floor Joists

Floor

joists

Clause_?__

Table_____

Size

___x___

Span__________

Max Spacing____

Floor Joists

Floor

joists

Clause 4.3.2.1

Pg 49

Table ?

Size

Floor Joists

Floor

joists

Clause 4.3.2

Table 6

Size ?

Floor Joists

Floor

joists

Clause 4.3.2

Table 6

Size 100x50

Span?

Floor Joists

Floor

joists

Refer to Clause 4.3.2.3

(Pg 50)

For RLW

(also note ii)

Table 6

Size

100x50

Span 1600

Max spacing 600mm

*Note that joists will actually be spaced at 510 because of flooring.

Bearers, Clause 4.3.1

• The max span of 1600 for the floor joists will determine the max spacing of the bearers parallel to the building length.

• Determine from the various tables the span for the given bearer size (150x75).

• These spans determine the pier spacings

Bearers supporting load–bearing walls

• RLW = Rafter span + overhang• Rafter run • = 7.470 / 2• Rafter run = 3.735• Rafter length = 3.735 / Cos 22.5o

• Rafter length = 4.042• Overhang =600 / Cos 22.5o

• Overhang =0.649• RLW = 4.042+0.649 = 2.670 2 • RLW = 2.7

FLW Bearers: load bearing walls

• Table one of Supplement 13

• Say RLW of 4500 (2700 actual)• FLW = 1600/2 = 800 (based on max joist span)

• Read max bearer span from table 1 for FLW 1200

• Allowable span for 150 x 75 = 1700

Bearers: floor loads only

• Table 5, supplement 13

• FLW = ? (Based on max joist span)

• FLW = 1600

• Go to Table 5 for FLW 1800

• Allowable span of bearer: 150x75 =

2100

Centreline spacing of brick piers

• Supporting load bearing walls

This is determined by the span of the bearer supporting load bearing walls

• = span of bearer plus 230 (size of brick pier)

• = 1700 + 230

• = 1930

Centreline spacing of brick piers

• Supporting floor loads only This is determined by the span of the bearer supporting floor loads only.

• Span of bearer plus 230 (size of brick pier)

• = 2330

Wet Area floor joists

Floor joists

Clause

___?_

Table

_____

Size

__x__

Material_____________

Thickness___________

Joist spacing_________

Joist span___________

Wet Area floor joists

Floor joists Clause

4.2.2

Table

?

Wet Area floors

Floor joists Clause

4.2.2

Table 6

Size

?

Wet Area floors

Floor joists

Clause

4.2.2

Table 6

Size

100 x 50

Material ?

Wet Area floors

Floor joists

Clause

4.2.2

Table 6

Size

100 x 50

CSR structafloor

Wet Area floors

Floor

joists

Clause

4.2.2

Table 6

Size

100 x 50

CSR structafloor

19mm thickness

450 joist spacing

1700 joist span