Patio above DPC with Aco Slot Drain?

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This brief video gives some great tips on how to install and use brickslot channel drainage

ACO Multidrain M100D polymer concrete channel drainage system with slot drainage channel with MDPE body and hot dipped galvanised steel edge rail Enabling users to cover a drainage channel almost completely, the new ACO slot cover prevents debris from entering silt baskets and drainage channels This

download game slot ACO RainDrain Brickslot Sump Unit B125 with Galvanised Access Cover & Silt Bucket 47004 ACO RainDrain Brickslot B 125 provides a discreet slot drainage I have two 3metre runs of ACO style drainage to install Looking online the recommended fall is anywhere between and 3cm