Support Methods And Height - DuraVent DuraSeal DS Manual

SUPPORT METHODS AND HEIGHT

1. Several support and guiding methods are used to anchor a chimney
against upward, downward and angular placement.
2. These supports and guides prevent bending stresses on the chimney
elbows and joints.
3. Certain limitations apply for proper installation of supports and guides.
See tables 4 and 5.
4. See figure 1 and 2 for typical installations.
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR
Inside Anchor Anchor Anchor
dia. Plate Plate Plate
(AP) HD Length
(APHD) (APL)
3" 200 200 200
4" 200 200 200
5" 195 195 195
6" 190 190 190
7" 185 185 185
8" 180 180 180
9" 175 175 175
10" 170 170 170
12" 160 160 160
14" 150 150 150
16" 140 140 140
18" 130 130 130
20" 120 120 120
22" 110 110 110
24" 100 100 100
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR
Inside Anchor Anchor Anchor
dia. Plate Plate Plate
(AP) HD Length
(APHD) (APL)
3" 100 100 100
4" 100 100 100
5" 97.5 97.5 97.5
6" 95 95 95
7" 92.5 92.5 92.5
8" 90 90 90
9" 87.5 87.5 87.5
10" 85 85 85
12" 80 80 80
14" 75 75 75
16" 70 70 70
18" 65 65 65
20" 60 60 60
22" 55 55 55
24" 50 50 50
Table 4 - Dimensions are in feet
MODEL DS
Wall Wall Roof Guy
Support Support support support
(WS) HD (RS) (GS)
(WSHD)
100 200 100 250
100 200 100 250
97.5 195 97.5 225
95 190 95 190
92.5 185 92.5 160
90 180 90 140
87.5 175 87.5 130
85 170 85 115
80 160 80 90
75 150 75 65
70 140 70 60
65 130 65 55
60 120 60 50
55 110 55 45
50 100 50 40
MODEL DSD
Wall Wall Roof Guy
Support Support support support
(WS) HD (RS) (GS)
(WSHD)
50 100 50 115
50 100 50 115
48.75 97.5 48.75 95
47.5 95 47.5 80
46.25 92.5 46.25 70
45 90 45 65
43.75 87.5 43.75 55
42.5 85 42.5 50
40 80 40 40
37.5 75 37.5 30
35 70 35 27
32.5 65 32.5 25
30 60 30 22
27.5 55 27.5 21
25 50 25 20
MAXIMUM CHIMNEY HEIGHTS AND SUPPORT METHOD FOR
Inside Anchor Anchor Anchor
dia. Plate Plate Plate
(AP) HD Length
(APHD) (APL)
3" 95 95 95
4" 95 95 95
5" 92.5 92.5 92.5
6" 90 90 90
7" 87.5 87.5 87.5
8" 85 85 85
9" N/A N/A N/A
10" 80 85 85
12" 75 75 75
14" 70 70 70
16" 65 65 65
18" 60 60 60
20" 55 55 55
22" 50 50 50
24" N/A N/A N/A
Table 5 - Dimensions are in feet
MODEL DSID
Wall Wall Roof
Support Support support support
(WS) HD (RS)
(WSHD)
47.5 95 47.5
47.5 95 47.5
46.25 92.5 46.25
45 90 45
43.75 87.5 43.75
42.5 85 42.5
N/A N/A N/A
42.5 85 42.5
37.5 75 37.5
35 70 35
32.5 65 32.5
30 60 30
27.5 55 27.5
25 50 25
N/A N/A N/A
Guy
(GS)
80
80
70
65
55
50
N/A
40
30
27
25
22
21
20
N/A
7