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.

Bob Evans Builder
01229 433466
18 Hempland Avenue
Barrow in Furness
 
D.o.c. Builders (nw)
01229 833496
26 Chester Street
Barrow in Furness
 
Marsh Plant Hire
01229 830369
Sandylands House
Barrow in Furness
 
Schofield Construction
01229 830004
Units 41 42 Trinity Enterprise
Barrow in Furness
 
Hodgson K
01229 827501
23a Kirkstone Crescent
Barrow in Furness
 
Design Crete
01229 822396
12 Longmynd Avenue
Barrow in Furness
 
H Mccartan & Son
01229 833642
4 Hawcoat Lane
Barrow in Furness
 
Owen Williamson
01229 877532
25 Priors Path
Barrow in Furness
 
W Pugh & Co
01229 822348
Salisbury House
Barrow in Furness
 
Neil Martin N
01229 813428
Sowerby Wood Business Park
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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