Laying flags with gutters between - Comment sought on unusual design

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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NormanOfAnstruther
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Joined: Sun Jul 09, 2017 7:42 pm
Location: Fife

Post: # 114024Post NormanOfAnstruther

Hi - I am planning a flagged area in my garden, with gutters between the flags. What I have in mind is that the flags are 50 mm apart, and a 75 mm gutter is formed in the concrete below. The gap is enough to see the water flowing, but not enough to be a trip hazard. The fall will be about 1:50. Total area 30 - 40 m2. The water will flow to a cistern (to feed a water feature) and any excess will flow to a soakaway.

Does anyone have any experience with this or a similar design? Comments and advice appreciated.
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Tony McC
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Joined: Mon Jul 05, 2004 7:27 pm
Location: Warrington, People's Republic of South Lancashire
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Post: # 114069Post Tony McC

This seems a nonsensical idea, if you don't mind me saying. The surface water will flow across the flags without any need for a complicated 'gutter' between them. What advantage does the gutter bring?
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