The key benefits of Pynford Beams are:
A comparison of the main features of the Pynford Beam systems against the traditional prop and needle is provided in the table below:
| Feature |
Pynford RC Beams |
Pynford Steel Beams |
Traditional Prop & Needle |
|
|---|---|---|---|---|
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Safety Rating | *** | ** | * |
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Avoids disruption to all floors below works | Yes | Yes | No |
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Avoids disruption to floor above | Yes | Yes | With compromised headroom |
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Built in fire resistance | Yes | No | No |
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Flexible in terms of beam shape | Yes | No | No |
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Flexible in terms of beam length | Yes | No | No |
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Can deal with unstable masonry | Yes | Yes | No |
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Speed of construction | medium | fast | slow |
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Facilitates column replacement | Yes | Yes | No |
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Minimises settlements by maintaining load path | Yes | Yes | No |
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Reduced deflections | Yes | No | No |
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Can reduce deflections further by pre-loading | Yes | Yes | Yes – but can cause more distress and settlement |
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Can increase moment resistance by post tensioning | Yes | No | No |
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Benefits of proprietary system | Yes | Yes | No |
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Access requirements | Minimal | Can vary | Often significant |
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Reinstatement costs | To one floor only | To one floor only | To all floors |
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Highly capable and flexible design approach | Yes | Yes | N/A |