S T A N D A R D S S T A N D A R D S AS/NZS 3500.3.2:1998 National plumbing and drainage Part 3.2:...
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Transcript of S T A N D A R D S S T A N D A R D S AS/NZS 3500.3.2:1998 National plumbing and drainage Part 3.2:...
S T A N D A R D SS T A N D A R D S
AS/NZS 3500.3.2:1998
National plumbing and drainage
Part 3.2: Stormwater drainage - Acceptable solutions
AS 3500.3.1:1998
National plumbing and drainage
Part 3.1: Stormwater drainage - Performance requirements
AS/NZS 2179.1:1994
Specifications for rainwater goods, accessories and fasteners
Part 1: Metal shape or sheet rainwater goods, and metal accessories and fasteners
1.1 SCOPE This Standard specifies requirements for pre-painted metal, metal and organic film/metal laminated shape or sheet rainwater goods, and metal accessories and fasteners.
AS/NZS 2179.1:1994
Specifications for rainwater goods, accessories and fasteners
Part 1: Metal shape or sheet rainwater goods, and metal accessories and fasteners
3.8 EFFECTIVE CROSS-SECTIONALAREA The effective cross-sectional area (to the nearest 100 mm²) for each nominal size of eaves gutter, valley gutter and downpipe shall be supplied by the manufacturer. The effective cross-sectional area for each shall be as follows:(a) For an eaves gutter and support system—
(i) it is the cross-sectional area beneath a line not less than 10 mm below the overflow, e.g. front bead, gutter back or bottom of overflow slots; or4.1 GENERAL One or more of the performance tests shall be used to demonstrate the compliance of a gutter or downpipe and support system
1 SCOPE This Standard specifies the performance requirements for materials and products, and design and installation of roof drainage systems, surface drainage systems and subsoil drainage systems.
AS 3500.3.1:1998
National plumbing and drainage
Part 3.1: Stormwater drainage - Performance requirements
6 PERFORMANCE REQUIREMENTS
6.1 Roof drainage systems
6.1.1 Average recurrence interval (ARI) Roof drainage systems shall be designed and installed in accordance with the following:(a) Where it is unlikely that adverse effects of stormwater flows would result in significant inconvenience or injury to people or damage to property, for rainfall events having an ARI of not less than 20 years.
(b) Where it is likely that adverse effects of stormwater flows would result in significant inconvenience or injury to people or damage to property, for rainfall events having an ARI of not less than 100 years.
AS 3500.3.1:1998
National plumbing and drainage
Part 3.1: Stormwater drainage - Performance requirements
6.1.2 Overflow devices or measures Overflow devices or measures shall be installed where overtopping of the roof drainage system could cause significant monetary loss, property damage or personal injury, and shall be designed in accordance with Clause 6.1.1(b) taking into account the effect of obstructions and blockages.
AS/NZS 3500.3.2:1998
National plumbing and drainage
Part 3.2: Stormwater drainage -Acceptable solutions
Australian/New Zealand Standard TM
Bu
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AS/NZS 3500.3.2:1998
SECTION 3 ROOF DRAINAGE SYSTEMS - DESIGN
TABLE 3.1AVERAGE RECURRENCE INTERVAL
ARI, yearsEffect of overtoppingAustralia New Zealand
Where significant inconvenience orinjury to people or damage toproperty (including contents ofbuildings) is—
(a) an unlikely occurrence, e.g.eaves gutters, external; or
20 10
(b) a likely occurrence e.g. boxgutters
100 50
ARI = 20 years
ARI = 20 years
(PART OF) FIGURE E4 AREA 2 - RAINFALL INTENSITIES (mm/h)FOR 5 MINUTES DURATION AND AN ARI OF 20 YEARS
(PART OF) FIGURE E4 AREA 2 - RAINFALL INTENSITIES (mm/h)FOR 5 MINUTES DURATION AND AN ARI OF 20 YEARS
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
SYDNEYSYDNEY
210210
ARI = 20 years
ARI = 20 years
15
9 6
8
4
12
Pitch 23.5°
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
Pitch 23.5°Pitch 23.5°
ARI = 20 years
ARI = 20 years
23.523.5
1.211.21
00 55 1515 2020 2525 3030 35351010 4040 4545 5050 555511
1.11.1
1.61.6
1.71.7
1.51.5
1.41.4
1.31.3
1.21.2
1.81.8
1.91.9
VA
LU
ES
OF
(F
)V
AL
UE
S O
F (
F)
SLOPE OF ROOF GUTTERS (DEGREES)SLOPE OF ROOF GUTTERS (DEGREES)
FIGURE 3.4 CATCHMENT AREA - SLOPE FACTOR, F, (FOR EAVES GUTTER ONLY)FIGURE 3.4 CATCHMENT AREA - SLOPE FACTOR, F, (FOR EAVES GUTTER ONLY)
x 1.2 (F)
x 1.2 (F)
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
(Ac) 174 m²
(Ac) 174 m²
ARI = 20 years
ARI = 20 years
x 1.2 (F)
x 1.2 (F)
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
(Ac) 174 m²
(Ac) 174 m² Gradient
1 : 500Gradient
1 : 500Smoothline Ae = 5900 mm²
Smoothline Ae = 5900 mm²
4.8 EAVES GUTTERS Eaves gutters shall be installed as follows:
(a) Gradients Deviations from nominal gradients shall be smooth and not cause permanent ponding.
NOTES:
1. Where a building is likely to move due to reactive soils, gradients may need to be not flatter than -
(a) 1:250 to achieve an effective gradient not flatter than 1:500; or
(b) 1:500 to achieve an effective gradient with no permanent ponding.
10 mm minimum
5900 mm²
ARI = 20 years
ARI = 20 years
x 1.2 (F)
x 1.2 (F)
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
(Ac) 174 m²
(Ac) 174 m² Gradient
1 : 500Gradient
1 : 500Smoothline Ae = 5900 mm²
Smoothline Ae = 5900 mm²
0.680.68 1.01.0 2.02.0 3.03.0 4.04.0 5.05.0 6.06.0 6.386.38
3.03.0 4.04.0 6.06.0 7.07.0 8.08.0 9.09.0 10.010.05.05.0 11.011.0 12.012.0 13.013.0 14.014.0 15.015.0 16.016.0 17.017.0 18.018.0
4.04.0 5.35.3 8.08.0 9.49.4 10.710.7 12.012.0 13.413.46.76.7 14.714.7 16.016.0 17.417.4 18.718.7 20.120.1 21.421.4 22.722.7 24.124.1
00
1010
6060
7070
5050
4040
3030
2020
8080
9090
100100
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS OF 1 : 500 AND STEEPER
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS OF 1 : 500 AND STEEPER
CA
TC
HM
EN
T A
RE
A P
ER
VE
RT
ICA
L D
OW
NP
IPE
(A
c) m
²C
AT
CH
ME
NT
AR
EA
PE
R V
ER
TIC
AL
DO
WN
PIP
E (
Ac)
m²
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS FLATTER THAN 1 : 500
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS FLATTER THAN 1 : 500
TOTAL FLOW IN EAVES GUTTER (L / s)TOTAL FLOW IN EAVES GUTTER (L / s)
DESIGN RAINFALL INTENSITY mm / hDESIGN RAINFALL INTENSITY mm / h
FIGURE 3.6 REQUIRED SIZE OF EAVES GUTTERSFIGURE 3.6 REQUIRED SIZE OF EAVES GUTTERS
5050
100
100
350350400400300300250250
200200150150
450450 500500
ARI = 20 years
ARI = 20 years
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²x 1.2
(F)x 1.2
(F)
Gradient 1 : 500
Gradient 1 : 500
(Ac) 174 m²
(Ac) 174 m²
Smoothline Ae = 5900 mm²
Smoothline Ae = 5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
0.680.68 1.01.0 2.02.0 3.03.0 4.04.0 5.05.0 6.06.0 6.386.38
3.03.0 4.04.0 6.06.0 7.07.0 8.08.0 9.09.0 10.010.05.05.0 11.011.0 12.012.0 13.013.0 14.014.0 15.015.0 16.016.0 17.017.0 18.018.0
4.04.0 5.35.3 8.08.0 9.49.4 10.710.7 12.012.0 13.413.46.76.7 14.714.7 16.016.0 17.417.4 18.718.7 20.120.1 21.421.4 22.722.7 24.124.1
00
1010
6060
7070
5050
4040
3030
2020
8080
9090
100100
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS OF 1 : 500 AND STEEPER
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS OF 1 : 500 AND STEEPER
CA
TC
HM
EN
T A
RE
A P
ER
VE
RT
ICA
L D
OW
NP
IPE
(A
c) m
²C
AT
CH
ME
NT
AR
EA
PE
R V
ER
TIC
AL
DO
WN
PIP
E (
Ac)
m²
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS FLATTER THAN 1 : 500
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS FLATTER THAN 1 : 500
TOTAL FLOW IN EAVES GUTTER (L / s)TOTAL FLOW IN EAVES GUTTER (L / s)
5050
100
100
350350400400300300250250
200200150150
450450 500500
DESIGN RAINFALL INTENSITY mm / hDESIGN RAINFALL INTENSITY mm / h
5.95.9
2828
FIGURE 3.6 REQUIRED SIZE OF EAVES GUTTERSFIGURE 3.6 REQUIRED SIZE OF EAVES GUTTERS
ARI = 20 years
ARI = 20 years
15
9 6
8
4
12
Pitch 23.5°HP
HP
HP
HP
HP
HP
HP
DP - A
DP - B
DP - C
DP - D
DP - E
DP - F
DP - G
24 m²24 m²
24 m²24 m²
24 m²24 m²
24 m²24 m²
28 m²28 m²
25 m²25 m²
25 m²25 m²
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500
(Ac) 174 m²
(Ac) 174 m²
Smoothline Ae = 5900 mm²
Smoothline Ae = 5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
ARI = 20 years
ARI = 20 years
min downpipe size = 85 dia
min downpipe size = 85 dia
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500
(Ac) 174 m²
(Ac) 174 m²
Smoothline Ae = 5900 mm²
Smoothline Ae = 5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
Maximum effective cross-sectional area of aneaves gutter (Ae), see AS/NZS 2179.1.
(Required effective cross-sectional area isobtained from Figure 3.6)
Nearest 100 mm 2
Minimum nominal size of vertical downpipemm
Gradient Cross-section
1:500 and steeper Flatter than 1:500 Circular Rectangular or square
3 5004 2004 600
4 7005 6006 200
65—75
—65 × 50
—
4 8005 2005 900
6 4007 0007 900
—8085
75 × 50——
6 4006 6006 700
8 6008 9009 000
—90—
100 × 50—
75 × 70
8 2009 600
12 800
11 00012 90017 100
100—
125
—100 × 75
—
12 80016 00018 400
17 20021 50024 700
——
150
100 × 100125 × 100
—
19 20020 000
25 80026 800
——
150 × 100125 × 125
TABLE 3.2EAVES GUTTER—REQUIRED SIZE OF VERTICAL DOWNPIPE
ARI = 20 years
ARI = 20 years
15
9 6
8
4
12
Pitch 23.5°HP
HP
HP
HP
HP
HP
HP
DP - A
DP - B
DP - C
DP - D
DP - E
DP - F
DP - G
24 m²24 m²
24 m²24 m²
24 m²24 m²
24 m²24 m²
28 m²28 m²
25 m²25 m²
25 m²25 m²
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500
(Ac) 174 m²
(Ac) 174 m²
Smoothline Ae = 5900 mm²
Smoothline Ae = 5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
ARI = 20 years
ARI = 20 years
min downpipe size = 85 dia
min downpipe size = 85 diaAs-c (downpipe G) = 28 m²
As-c (downpipe G) = 28 m²
0.680.68 1.01.0 2.02.0 3.03.0 4.04.0 5.05.0 6.06.0 6.386.38
3.03.0 4.04.0 6.06.0 7.07.0 8.08.0 9.09.0 10.010.05.05.0 11.011.0 12.012.0 13.013.0 14.014.0 15.015.0 16.016.0 17.017.0 18.018.0
4.04.0 5.35.3 8.08.0 9.49.4 10.710.7 12.012.0 13.413.46.76.7 14.714.7 16.016.0 17.417.4 18.718.7 20.120.1 21.421.4 22.722.7 24.124.1
00
1010
6060
7070
5050
4040
3030
2020
8080
9090
100100
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS OF 1 : 500 AND STEEPER
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS OF 1 : 500 AND STEEPER
CA
TC
HM
EN
T A
RE
A P
ER
VE
RT
ICA
L D
OW
NP
IPE
(A
c) m
²C
AT
CH
ME
NT
AR
EA
PE
R V
ER
TIC
AL
DO
WN
PIP
E (
Ac)
m²
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS FLATTER THAN 1 : 500
EFFECTIVE CROSS-SECTIONAL AREA OF EAVES GUTTER (Ae) 1000 mm²FOR GRADIENTS FLATTER THAN 1 : 500
TOTAL FLOW IN EAVES GUTTER (L / s)TOTAL FLOW IN EAVES GUTTER (L / s)
5050
100
100
350350400400300300250250
200200150150
450450 500500
DESIGN RAINFALL INTENSITY mm / hDESIGN RAINFALL INTENSITY mm / h
FIGURE 3.6 REQUIRED SIZE OF EAVES GUTTERSFIGURE 3.6 REQUIRED SIZE OF EAVES GUTTERS
2828
1.651.65
total flow = 1.65 L/stotal flow = 1.65 L/sAs-c (downpipe G) =
28 m²As-c (downpipe G) =
28 m²
(Ac) 174 m²
(Ac) 174 m²
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500Smoothline Ae =
5900 mm²Smoothline Ae =
5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
ARI = 20 years
ARI = 20 years
min downpipe size = 85 dia
min downpipe size = 85 dia
15
9 6
8
4
12
Pitch 23.5°HP
HP
HP
HP
HP
HP
HP
DP - A
DP - B
DP - C
DP - D
DP - E
DP - F
DP - G
24 m²24 m²
24 m²24 m²
24 m²24 m²
24 m²24 m²
28 m²28 m²
25 m²25 m²
25 m²25 m²
1.65 / 4 = 0.4 L / s1.65 / 4 = 0.4 L / sAve flow per metre
of gutterAve flow per metre
of gutter
Length of gutter (G) = 4 m
Length of gutter (G) = 4 m
44
total flow = 1.65 L/stotal flow = 1.65 L/sAs-c (downpipe G) =
28 m²As-c (downpipe G) =
28 m²
(Ac) 174 m²
(Ac) 174 m²
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500Smoothline Ae =
5900 mm²Smoothline Ae =
5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
ARI = 20 years
ARI = 20 years
min downpipe size = 85 dia
min downpipe size = 85 dia
hf
hf
10 mm min
hf
30 mm min
flashing
TABLE G1MINIMUM hf VALUES
Average inflow per metre of gutter(L/s per m)Gutter slope
0.2 0.4 0.6 0.8 1.0
Level gutter 18 20 22 23 25
Sloping gutter 12 14 16 17 19
Minimum hf (mm)
hf = 14 mmhf = 14 mm1.65 / 4 = 0.4 L / s1.65 / 4 = 0.4 L / sAve flow per metre
of gutterAve flow per metre
of gutter
Length of gutter (G) = 4 m
Length of gutter (G) = 4 m
total flow = 1.65 L/stotal flow = 1.65 L/sAs-c (downpipe G) =
28 m²As-c (downpipe G) =
28 m²
(Ac) 174 m²
(Ac) 174 m²
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500Smoothline Ae =
5900 mm²Smoothline Ae =
5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
ARI = 20 years
ARI = 20 years
min downpipe size = 85 dia
min downpipe size = 85 dia
hf = 14 mmhf = 14 mm1.65 / 4 = 0.4 L / s1.65 / 4 = 0.4 L / sAve flow per metre
of gutterAve flow per metre
of gutter
Length of gutter (G) = 4 m
Length of gutter (G) = 4 m
total flow = 1.65 L/stotal flow = 1.65 L/sAs-c (downpipe G) =
28 m²As-c (downpipe G) =
28 m²
(Ac) 174 m²
(Ac) 174 m²
+ 6 x 4 = 24
+ 6 x 4 = 24
15 x 8 = 120
15 x 8 = 120
(Ah) 144 m² (Ah) 144 m²
rainfall intensity = 210 mm/h
rainfall intensity = 210 mm/h
x 1.2 (F)
x 1.2 (F)
Gradient 1 : 500
Gradient 1 : 500Smoothline Ae =
5900 mm²Smoothline Ae =
5900 mm²Acdp = 28 m²Acdp = 28 m²
174 / 28 = 7
174 / 28 = 7
min number of downpipes
min number of downpipes
ARI = 20 years
ARI = 20 years
min downpipe size = 85 dia
min downpipe size = 85 dia
C O N C L U S I O NC O N C L U S I O N
many years experience in home & industrial building markets
huge range of products
backed by a national company
extensive industry knowledge
commitment to customer service
Smoothline offers unique features & benefits
many years experience in home & industrial building markets
huge range of products
backed by a national company
extensive industry knowledge
commitment to customer service
Smoothline offers unique features & benefits
T H A N K - Y O UT H A N K - Y O U