Fallen Arches Askam-in-Furness

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

Hindle Plant Hire
01229 462840
The Old Chapel
Ulverston
 
Harry Barker Properties Ltd
01229 466939
Unit 3 Station Yard
Askam in Furness
 
A D Greenwood
01229 466179
Barn Field
Askam in Furness
 
Colin Roberts Landscapes
01229 463900
19 High Bank
Dalton in Furness
 
Robinson Builders
01229 462261
Longlands Farm
Dalton in Furness
 
Fb Building
01229 466224
14 Harris Street
Askam in Furness
 
Alan Stevenson General Building
01229 889073
Parklands Terrace
Askam in Furness
 
Clarkson Properties
01229 467833
C
Barrow in Furness
 
Albion Bros.
01229 822255
Yarlwell
Dalton in Furness
 
Brian Mawson & Son
01229 870522
Bouthwood Rd
Barrow in Furness
 

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.

The full tex...

Click here to read full article from Masonry Construction