Fallen Arches Barrow-in-Furness

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

Neil Martin N
01229 813428
Sowerby Wood Business Park
Barrow in Furness
 
Owen Williamson
01229 877532
25 Priors Path
Barrow in Furness
 
Marlon
01229 838916
38 Derry Street
Barrow in Furness
 
Leck Construction
01229 820394
Leck Road
Barrow in Furness
 
T.p Mcnulty Construction Ltd
01229 832386
19 The Crescent
Barrow in Furness
 
Brian Mawson & Son
01229 870522
Bouthwood Rd
Barrow in Furness
 
Design Crete
01229 822396
12 Longmynd Avenue
Barrow in Furness
 
Creative Paving
01229 838580
33 Rawlinson Street
Barrow in Furness
 
Pave Crete
01229 839307
87 Devon St
Barrow in Furness
 
Bob Evans Builder
01229 433466
18 Hempland Avenue
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.

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