(19)
(11) EP 3 812 524 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.12.2021 Bulletin 2021/52

(43) Date of publication A2:
28.04.2021 Bulletin 2021/17

(21) Application number: 20202822.1

(22) Date of filing: 20.10.2020
(51) International Patent Classification (IPC): 
E04B 1/348(2006.01)
E04G 21/14(2006.01)
 E04D 13/08(2006.01)
(52) Cooperative Patent Classification (CPC):
E04B 1/3483; E04B 1/34869; E04D 13/08; E04D 2013/0826; E04D 2013/0846; E04D 2013/0893; E04G 21/142
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 25.10.2019 GB 201915545

(71) Applicant: Laing O'Rourke Plc
Dartford, Kent DA2 6SN (GB)

(72) Inventors:
  • BOWERMAN, Hugh
    Dartford, Kent DA2 6SN (GB)
  • BALDOCK, Douglas
    Dartford, Kent DA2 6SN (GB)

(74) Representative: CMS Cameron McKenna Nabarro Olswang LLP 
Cannon Place 78 Cannon Street
London EC4N 6AF
London EC4N 6AF (GB)


(56) References cited: : 
   
       


    (54) RISER SYSTEM


    (57) Some examples of the stackable building module are manufactured with an integrated functionally operable riser system for transportation to its installation site. The integrated riser system functions at least as a drain which allows fluids to be passed through the riser system from the roof of the building module to a ground drainage system as soon as the building module is lowered in alignment either with a ground drainage system or a lower stackable building module so that a lower portion of the riser system is forced by the lowering of the building module to automatically engage with the ground drainage system or an upper portion of a lower building module.







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