Reference Material

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Reference Material
A.S. 1684.2 (2006) Non Cyclonic
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Details

• Floor Plan Same as Roofing Class Exercise 1

• Brick Veneer Construction

• Roof Pitch 300

• Sheet Roofing 10Kg/m2

• Eaves Width 450mm

• Floor to Ceiling Height 2.700m

• Wall Framing Seasoned Softwood MGP 15

• Concrete Raft Floor Slab

• Wind Classification N3

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Wall Frame. (Supporting Conventional Roof
Framing)
Determine the most economical size, span
spacing of the following members

1. Bottom Wall plate not trenched.
2. Top Wall plate not trenched (to support rafters
   _at_ 1200mm c/c)
3. Common Studs at 600mm c/c (not notched for
   erection bracing)
4. Noggings
5. Jamb Studs (studs at sides of openings)
6. Lintels
7. Eaves Beams

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Floor Plan
Same as Roofing Class Exercise 1
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Use preliminary calcs from roofing ex. 1
Rafter Span 2.098 Say 2.100 RLW Underpurlin
2.1
Eaves Overhang 0.693
Distance X 1.728
Half spread of the fan strut 1.211 Full spread
of the fan strut 2.422 Length of strut 1.713
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1. Fill in General Information from Prelim.
Calcs Specification
Member Rule / Table Size Comments
Timber Species Timber Grade Supplement Number Roof Mass Table Type of Const. Floor / Ceiling Height Eaves RLW RLW
S/softwood
MGP 15
6 - N3
B1.1
10Kg/m
For roof mass use Table B1.1 p.219
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Table B1.1 Page 217
10kg/m2
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1. Fill in General Information from Prelim.
Calcs Specification
Member Rule / Table Size Comments
Timber Species Timber Grade Supplement Number Roof Mass Table Type of Const. Floor / Ceiling Height Eaves RLW RLW
S/softwood
MGP 15
6 - N3
B1.1
10Kg/m
Brick veneer
2.700m
For roof mass use Table B1.1 p.219
Check Preliminary Calcs for rafter RLW Eaves
RLW
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Calculate Eaves Overhang Eaves RLW
TL O/Hang 0.450 0.150 COS 30
0.693m
0.693m
RLW Eaves 0.693m
0.150
0.450
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Member Rule / Table Size Comments
Timber Species Timber Grade Supplement Number Roof Mass Table Type of Const. Floor / Ceiling Height Eaves RLW RLW
S/softwood
MGP 15
6 - N3
B1.1
10Kg/m
Brick veneer
2.700m
0.693m
Eaves RLW from preliminary calcs. 0.693m
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RLW on external wall will be Span of rafter plus
overhang Refer to page 27 of your
standard 2.098 .693 2.791 Say 2.800
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Member Rule / Table Size Comments
Timber Species Timber Grade Supplement Number Roof Mass Table Type of Const. Floor / Ceiling Height Eaves RLW RLW
S/softwood
MGP 15
6 - N3
B1.1
10Kg/m
Brick veneer
2.700m
.693m
2.800m
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2. Find information for Common Studs (rules
supp. Table)
Member Rule / Table Size Comments
Common Studs R R T Stud Height Stud Centers Studs Notched Rafter Spacing
2.700
6.2.1.2
0.600
90 x 35
6.3.2.1
Not notched
1.200m
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Fill in Comments Column
Refer page 59, rule 6.2.1.2 (Building Practice)
Common Studs.
Refer page 66, rule 6.3.2.1 (Member Sizes) Common
Studs.
Refer Supp. 6, Table 7 Common Studs Single
Storey not notched, 600mm c/c, sheet roof, 2.700m
height, 1.200m rafter spacing, RLW of 2.100 min.
Select stud size - 90 x 35 (from table 7)
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3. Find information for Noggings (rules supp.
Table)
Member Rule / Table Size Comments
Noggings R Spacing
6.2.1.5
Refer page 62, rule 6.2.1.5 (Building Practice)
Noggings.
Check spacing requirements
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• Wall studs shall have continuous rows of
  noggings at 1350 mm maximum centres
  (see Figure 6.6).
• Noggings are not required to be stress graded.
• Nogging thickness shall be a minimum of 25 mm
  and shall be suitable for the proper fixing of
  cladding and linings.
• Noggings shall be installed either centrally in
  the depth of the studs or flush with one face of
  the stud in order to provide fixing or support to
  cladding or linings. Stagger in the row of
  noggings shall not be greater than twice the
  nogging breadth.

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3. Find information for Noggings (rules supp.
Table)
Member Rule / Table Size Comments
Noggings R Spacing
1.350m
6.2.1.5
90 x 35
Refer page 62, rule 6.2.1.5 (Building Practice)
Noggings.
Check spacing requirements
Spacing of noggings 1.350m max.
Size for Noggings same as for common studs, 70
x 35
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• Find information for Studs at sides of Openings
• (Rules Supp. Table No.)

Member Rule / Table Size Comments
Studs at sides of openings R R T Window/Door Opening Width W9 Bedroom 1 W1 Bedroom 2 W8 Bedroom 3 W2 Bath WC W3 Laundry W4 Kitchen W5 Dining W6 Living W7 Family D2 Entry D1 Kitchen
6.2.1.2
6.3.2.3
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Refer page 59, rule 6.2.1.2 (Building Practice)
Common Studs.
Refer page 68, rule 6.3.2.3 (Member sizes) Jamb
Studs.
Refer Supp. 6, Table 11 Jamb Studs Sheet Roof
Refer to window schedule for Opening Widths
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Window Schedule
Window H x W W9 Bedroom
1 1.550 1.800 W1 Bedroom 2 1.550
1.200 W8 Bedroom 3 1.550
1.200 W2 Bath WC .900 1.800 W3
Laundry .900 1.350 W4 Kitchen
.900 1.650 W5 Dining 1.550
1.200 W6 Living 1.650 1.850 W7
Family 1.650 1.850 D2 Entry 2.060
1.350 D1 Kitchen 2.060 .900
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Member Rule / Table Size Comments
Studs at sides of openings R R T Window/Door Opening Width W9 Bedroom 1 W1 Bedroom 2 W8 Bedroom 3 W2 Bath WC W3 Laundry W4 Kitchen W5 Dining W6 Living W7 Family D2 Entry D1 Kitchen
6.2.1.2
1.800
1.200
6.3.2.3
1.200
1.800
1.350
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1.650
1.200
1.850
1.850
1.350
0.900
Refer page 59, rule 6.2.1.2 (Building Practice)
Common Studs.
Refer page 68, rule 6.3.2.3 (Member sizes) Jamb
Studs.
Refer Supp. 6, Table 11 Jamb Studs Sheet Roof
Refer to window schedule for Opening Widths
Fill in Opening Width information
Go to Table 11 of supplements to size studs to
suit opening widths
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Remember the fine print from table 17, lintels
Note that the minimum bearing length according to
note 5 is 35mm
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This shows us that 2/90 x 35 jamb studs will
support a max width of opening up to 4500 for a
tin roof (and pretty much the same for a tile
roof)
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Member Rule / Table Size Comments
Studs at sides of openings R R T Window/Door Opening Width W9 Bedroom 1 W1 Bedroom 2 W8 Bedroom 3 W2 Bath WC W3 Laundry W4 Kitchen W5 Dining W6 Living W7 Family D2 Entry D1 Kitchen
6.2.1.2
2/90 x35
1.800
1.200
2/90 x35
6.3.2.3
2/90 x35
1.200
2/90 x35
1.800
2/90 x35
1.350
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1.650
2/90 x35
1.200
2/90 x35
1.850
2/90 x35
1.850
2/90 x35
1.350
2/90 x35
0.900
90 x 35
Window 9 studs at sides of openings 2 / 90
x 35
Fill in remaining stud information using Table 11.
Next Size Top Bottom Plates
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5. Find information for Top Plates (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Top Plates R R T Top Plate RLW Tie Down Spacing
Single storey sheet roof
6.2.2.1
2.800m
6.3.4
1.200m
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Fill in Comments Column
Refer page 62, rule 6.2.2.1 (Building Practice)
Plates General.
Refer page 73, rule 6.3.4 (Member Sizes) Top
Plates.
Refer Supp. 6, Table 15 Top Plates (Sheet Roof
Single or Upper Storey).
Check Table 15 for size of Top Plates
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Rafter Spacing 1.200m
Tie Down Spacing 1.200
Stud spacing 0.600
RLW 2.800m
Top Plate Size 35 x 90
35 x 70
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5. Find information for Top Plates (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Top Plates R R T Top Plate RLW Tie Down Spacing
Single storey sheet roof
6.2.2.1
35 x 90
2.800m
6.3.4
1.200m
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Fill in Comments Column
Refer page 62, rule 6.2.2.1 (Building Practice)
Plates General.
Refer page 73, rule 6.3.4 (Member Sizes) Top
Plates.
Refer Supp. 6, Table 15 Top Plates (Sheet Roof
Single or Upper Storey).
Check Table 15 for size of Top Plates
Enter Size for Top Plates
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6. Find information for Bottom Plates (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Bottom Plates R R T Bottom Plate RLW Rafter Spacing
Single storey sheet roof
6.2.2.2
2.800m
6.3.3
1.200m
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Fill in Comments Column
Refer page 62, rule 6.2.2.2 (Building Practice)
Bottom Plates.
Refer page 72, rule 6.3.3 (Member Sizes) Bottom
Plates.
Refer Supp. 6, Table 14 Bottom Plates (Sheet Roof
Single or Upper Storey).
Check Table 14 for size of Bottom Plates.
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Use 35 x 90 Bottom Plates
Check Note 2 Table 14 For plate thickness if
Walls are on Concrete Slabs.
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6. Find information for Bottom Plates (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Bottom Plates R R T Bottom Plate RLW Rafter Spacing
Single storey sheet roof
6.2.2.2
35 x 90
2.800m
6.3.3
1.200m
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Fill in Comments Column
Refer page 62, rule 6.2.2.2 (Building Practice)
Bottom Plates.
Refer page 72, rule 6.3.3 (Member Sizes) Bottom
Plates.
Check Table 14 for size of Bottom Plates.
Enter Size for Bottom Plates
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7. Find information for Lintels (Rules Supp.
Table No.)
Member Rule / Table Size Comments
Lintels R R T Window/Door Opening Width W9 Bedroom 1 W1 Bedroom 2 W8 Bedroom 3 W2 Bath WC W3 Laundry W4 Kitchen W5 Dining W6 Living W7 Family D2 Entry D1 Kitchen
6.2.3
1.800
6.3.6
1.200
1.200
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1.800
1.350
1.650
1.200
1.850
1.850
1.350
0.900
Fill in Opening Width information
Refer page 63, rule 6.2.3 (Building Practice)
Openings.
Refer page 75, rule 6.3.6 (Member Sizes) Lintels.
Refer Supp. 6, Table 17 Lintels (Sheet Roof
Single or Upper Storey).
Go to Table 17 to Size Lintels to suit opening
widths.
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RLW 2.800m
Rafter spacing 1.200m
Use column for Max. Lintel Span
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W9 Bedroom 1 Lintel span 1.800
Lintel Size for W9 120 x 35
NOTE 120 x 35 Lintel is used because it is
the most cost effective, as opposed to using 2/90
x 35.
Size remaining Lintels
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Member Rule / Table Size Comments
Lintels R R T Window/Door Opening Width W9 Bedroom 1 W1 Bedroom 2 W8 Bedroom 3 W2 Bath WC W3 Laundry W4 Kitchen W5 Dining W6 Living W7 Family D2 Entry D1 Kitchen
6.2.3
1.800
120 x 35
6.3.6
1.200
90 x 35
1.200
90 x 35
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1.800
120 x 35
1.350
90 x 35
1.650
90 x 45
1.200
90 x 35
1.850
120 x 35
1.850
120 x 35
1.350
90 x 35
0.900
35 x 90
Fill in Opening Width information
Refer page 63, rule 6.2.3 (Building Practice)
Openings.
Refer page 75, rule 6.3.6 (Member Sizes) Lintels.
Refer Supp. 6, Table 17 Lintels (Sheet Roof
Single or Upper Storey).
Enter Lintel size for W9 Bedroom 1 (120 x 35).
Complete entering remaining Lintel sizes
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8. Find information for Eaves Beams (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Eaves Beams R R T Location Span RLW Porch (Front entry)
2.100
1.800
Fill in Comments Column (refer to plan for
porch span)
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Entrance Span 1.800
Single Span Member (Eaves or Verandah Beam)
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8. Find information for Eaves Beams (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Eaves Beams R R T Location Span RLW Front entry
6.3.7
2.800
6.3.6
1.800
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Find Rule 6.3.7, page 78, Verandah Beams
(Plates)
6.3.7 Verandah beams (plates) The size of
verandah beams shall be determined from Span
Tables 51A of the Supplements for single span and
continuous spans respectively. The ends of
beams, which are supported on stud walls, shall
be carried by jamb studs (with beams considered
as lintels) or posts.
Refer page 75, rule 6.3.6 (Member Sizes) Lintels.
Refer Supp. 6, Table 17 Lintels (Sheet Roof
Single or Upper Storey).
Go to Table 17 to Size Lintels to suit opening
widths.
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RLW 2.800
Rafter Spacing 1.200
Beam Span 1.800
Beam Size 120 x 35
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8. Find information for Eaves Beams (Rules
Supp. Table No.)
Member Rule / Table Size Comments
Eaves Beams R R T Location Span RLW Front entry
6.3.7
120 x 35
2.800
6.3.6
1.800
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Find Rule 6.3.7, page 78, Verandah Beams
(Plates)
6.3.7 Verandah beams (plates) The size of
verandah beams shall be determined from Span
Tables 51A of the Supplements for single span and
continuous spans respectively. The ends of
beams, which are supported on stud walls, shall
be carried by jamb studs (with beams considered
as lintels) or posts.
Refer page 75, rule 6.3.6 (Member Sizes) Lintels.
Refer Supp. 6, Table 17 Lintels (Sheet Roof
Single or Upper Storey).
Go to Table 17 to Size Lintels to suit opening
widths.
Enter Size from table 17 120 x 35
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Exercise 1 Wall Framing Complete