Fallen Arches Dalton-in-Furness

Some residential designers and builders in Dalton-in-Furness have failed to recognize that all brick arches are structural masonry and must be designed according to structural principals.

Ian Miles
01229 462175
11 Tudor Square
Dalton in Furness
 
Brian Mawson & Son
01229 870522
Bouthwood Rd
Barrow in Furness
 
Menzies Everett
01229 463025
Ship Hill
Dalton in Furness
 
Albion Bros.
01229 822255
Yarlwell
Dalton in Furness
 
Brian Mawson
01229 820479
Bouthwood Road
Barrow in Furness
 
Steve Forrest
01229 466483
2 Kings Mount
Dalton in Furness
 
Ashburner D & D A
01229 462802
The Gables
Dalton in Furness
 
Colin Roberts Landscapes
01229 463900
19 High Bank
Dalton in Furness
 
Robinson Builders
01229 462261
Longlands Farm
Dalton in Furness
 
Hindle Plant Hire
01229 462840
The Old Chapel
Ulverston
 

Fallen Arches

Provided By:

Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: October 1, 1995

By William G. Bailey

Abstract:

Some residential designers and builders have failed to recognize that all brick arches are structural masonry and must be designed according to structural principals.

Arch Types and Terms
The types of arches most commonly used in residential construction are: jack, segmental, semicircular, and parabolic. Arches typically are classified as "minor" or "major." Minor arches are used to span openings of up to 6 feet and support vertical loads of less than 1,000 pounds per lineal foot. Major arches are those that span more than 6 feet and can support vertical loads greater than 1,000 pounds per lineal foot.

Thrust Loads
Although they carry loads in compression, masonry arches impart horizontal thrust loads at each end or "skewback." The abutments at each side of an arch must be strong enough to resist these loads. Most problems occur in arches that frame into columns. In residential construction arches frame into a column that often consists of a 4x4-inch wood member. Brick are laid merely to enclose the wood column. Such hollow brick columns offer little or no resistance to thrust loads. Various methods can be used to resist thrust loads. When feasible, avoid framing arches into columns and instead place arched openings in walls. Alternatively, increase the strength of columns by increasing their cross section and adding reinforcing steel and grout.

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