Patent ID: 11939729
Assignee: IMPERIAL COLLEGE INNOVATIONS LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 18:
19. A form for use in producing a cement-based material pad comprising a plurality of drainage holes, the form comprising:
a plurality of parallel pins each having a shaft, a head and a pointed end;
a connecting means configured to hold the plurality of pins parallel to each other, wherein the connecting means connects the head of each of the plurality of parallel pins;
a plurality of straight conduits, each having an upper end and a lower end;
wherein each conduit has a constant cross-section and is configured to receive one of the plurality of parallel pins;
wherein a cement-based material can be poured to surround the conduits, leaving the upper ends of the conduits exposed; and
each of the parallel pins being configured such that the pointed end extends beyond the lower end of each conduit so as to prevent a cement-based material obstructing the lower end of each conduit when the cement-based material is poured to surround the conduits.