Box gutter

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.

Note! The sketches in this section reference terminology commonly used in the UK and Australia.[2]

  • A section through a box gutter at the intersection of the bottom of a sloping roof and a parapet wall.
  • A simpler box gutter arrangement at a parapet wall that give a bare minimum of compliance to the Building Code of Australia (BCA)
  • A box gutter between two parallel roof surfaces.
  • A sketch of a now illegal gutter construction under the BCA. A design to be avoided!
gollark: However³, yes, multiple personality weirdness also.
gollark: However², these people are moving through gender space over time. The question is whether they're doing so at discrete intervals or not.
gollark: However, there is a finite quantity of extant people. So only 7 billion genders as an upper bound can be used at once.
gollark: Would that be a BAD thing?
gollark: No he wouldn't be quarantined. UTTER English.

References
  1. Dictionary of Architecture & Construction, C.M.Harris.
  2. Glossary of Australian Building Terms - Third Edition.(NCRB)


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.