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| Cutting radii & corners |
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IntroductionThis page is part of a series of pages that consider cutting techniques used with flags (or slabs, if that's what you call 'em). The first page examined the basic principles of cutting-in: this page looks at how flagged pavements are laid to curves, radii and corners, particularly for commercial work; related pages consider other cut features such as notches, curves and flagged radii. See the menu above right or the related pages listing at the foot of this page for a more comprehensive guide to what's available. |
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Cutting flags for a footpath radiusFlagged pathways, particularly public footpaths, often include a regular curve, more correctly known as a radius. The radius may be a long, slow radius following the gentle curve of a roadway, or it might be a relatively sharp, short and fast radius at the junction of two paths.Although the techniques shown here are most commonly used on public footpaths, many of the principles can be used on non-commercial projects. For example, the methods used to cut a ring radius can be applied to cutting coping stones around the edge of a pool. There are several different laying patterns that can be used when flagging a radius and this section looks at a few of the more common techniques. In practice, the most suitable layout is determined by a number of factors:-
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On paths where flags are laid transversely, a fan radius or a town corner is usually most appropriate, while paths flagged longitudinally can have the radius sections laid using a ring radius or a fan radius. Fast curves are often (but not always) more suited to fan radius pattern while slow, sweeping curves where the flags are laid longitudinally are nearly always laid to a ring radius layout.
For certain projects, usually those operating on a tight budget or with limited skilled operatives available, a 'run out' radius may be used as it is the simplest option of all: one path of flags is continued through to the kerb line while the other abuts its 'back edge'. The only cutting involved is that against the kerbline (usually a curve cut as described previously), and the boundary between the two paths. |
Click on a corner option for separate page |
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The remainder of this section looks at how each of these options would be cut. It should be noted that, as this section is focussed on cutting techniques, the actual layout of each radius has been simplified. Most notable is the exclusion of any tactile pavers that are now more or less standard at the dropped or pram crossings that are typically placed on a footpath radius.
This page continues by looking at how a Ring Radius is cut. Subsequent pages will consider a Fan Radius, and Run-outs & Town Corners. |
Related Pages |