| 词条 | Box gutter | ||||
| 释义 |
A box gutter, internal gutter, parallel gutter, or trough gutter is a rain gutter on a roof usually rectangular in shape; it may be lined with EPDM rubber, metal, asphalt, or roofing felt, and may be concealed behind a parapet or the eaves, or in a roof valley.[1][2] Box gutters are essentially placed between parallel surfaces, as in a valley between parallel roofs or at the junction of a roof and a parapet wall. They should not be confused with so-called valley gutters or valley flashings which occur at the non-parallel intersection of roof surfaces, typically at right angled internal corners of pitched roofs. Provision is made in the design of the gutter to have a rain flow to the outlet with a maximum slope of 1:200 and a minimum of 1:400. Gallery of sketchesNote! The sketches in this section reference terminology commonly used in the UK and Australia.[2] See also{{Empty section|date=July 2010}}References1. ^Dictionary of Architecture & Construction, C.M.Harris. 2. ^1 Glossary of Australian Building Terms - Third Edition.(NCRB) External links
2 : Architectural elements|Roofs |
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