This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end.
Internal copper gutter minimum slope.
With the exception of membrane roofs water from internal gutters must discharge into a rainwater head or to an internal outlet as shown in e2 as1 figures 63 a and b and figures 64 b or c see figure 3.
Lower slopes are possible under certain conditions using modified details.
Table 8 1a shows the recommended minimum slopes for various copper roofing systems using the details shown throughout this handbook.
This brings up another important rule to keep in mind.
All guttering must slope toward the nearest downspout.
With the exception of membrane roofs water from internal gutters must discharge into a rainwater head or to an internal outlet as shown in e2 as1 figures 63 a and b and figures 64 b or c see figure 3.
E2 as1 8 1 6 1 requires all internal gutters to have a minimum 1 100 slope.
In general long straight runs should have joints spaced a maximum of 48 feet apart.
Most contractors tend to set the slop at one quarter inch per ten feet of guttering.
Expansion joints in copper gutters must be provided to allow for the natural expansion and contraction of copper caused by thermal changes.
The modified details are discussed below.
Working out gutter slope as a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.
Table 8 1b shows the minimum recommended slopes using these special details.
E2 as1 8 1 6 1 requires all internal gutters to have a minimum 1 100 slope.