Patent Number: 
Section: claims

1. A radiation shielding barrier wall assembly comprising:wall elements including studs and support elements attached to and extending between the studs;sheets of radiation shielding material suspended across spaces between studs by the support elements; andadjacent radiation shielding sheets overlapping on either side of a portion of a stud. 2. The radiation shielding barrier wall assembly of claim 1 in which at least a stud is elongated in a first direction, and has a cross section in the plane perpendicular to the first direction having bends and at least a leg between the bends, the cross section of the stud comprising a first leg at one end of the cross section and a second leg at another end of the cross section and further comprising an offset leg located between the first leg and the second leg, the offset leg being arranged to allow a sheet or radiation shielding material supported by a wall element to one side of the stud to extend adjacent to the offset leg to overlap with a sheet of radiation shielding material supported adjacent to the offset leg by a wall element to the other side of the stud. 3. The radiation shielding barrier wall assembly of claim 2 further comprising a restraining bar attached to the at least a stud to hold the sheet of radiation shielding material extending adjacent to the leg. 4. The radiation shielding barrier wall assembly of claim 1 in which the support elements include support bars attached to and extending between the studs, and the sheets of radiation shielding material are suspended from the support bars. 5. The radiation shielding barrier wall assembly of claim 1 in which the support elements include a substrate to which the radiation shielding material is attached. 6. The radiation shielding barrier wall assembly of claim 5 in which the substrate comprises plywood, fibreboard or drywall. 7. The radiation shielding barrier wall assembly of claim 5 in which the radiation shielding material is laminated to the substrate. 8. The radiation shielding barrier wall assembly of claim 5 in which the substrate is attached to brackets extending between and attached to the studs. 9. The radiation shielding barrier wall assembly of claim 1 further comprising finishing material attached to the studs and enclosing the sheets of radiation shielding material. 10. The radiation shielding barrier wall assembly of claim 1 in which the studs extend between a top track and a bottom track. 11. The radiation shielding barrier wall assembly of claim 1 further comprising a corner assembly for a bend in the wall, the corner assembly comprising radiation shielding material attached to sheet metal, the corner assembly being attached to a stud at one side of the corner assembly, and attached to another stud at an opposite side of the corner assembly, and the corner assembly having a bend between the side and the opposite side. 12. A radiation shielding barrier wall assembly comprising:studs;support bars attached to and extending between the studs;sheets of radiation shielding material suspended from the support bars; andin which at least a stud is elongated in a first direction, and has a cross section in the plane perpendicular to the first direction having bends and at least a leg between the bends, the cross section of the stud comprising a first leg at one end of the cross section and a second leg at another end of the cross section and further comprising an offset leg located between the first leg and the second leg, the offset leg being arranged to allow a sheet of radiation shielding material suspended from a support bar to one side of the stud to extend adjacent to the leg to overlap with a sheet of radiation shielding material suspended from a support bar to the other side of the stud. 13. The radiation shielding barrier wall assembly of claim 12 further comprising a restraining bar attached to the at least a stud to hold the sheet of radiation shielding material extending adjacent to the leg. 14. The radiation shielding barrier wall assembly of claim 12 further comprising finishing material attached to the studs and enclosing the support bars and sheets of radiation shielding material. 15. The radiation shielding barrier wall assembly of claim 12 in which the studs extend between a top track and a bottom track. 16. The radiation shielding barrier wall assembly of claim 12 in which each of the sheets of radiation shielding material comprises a foldover edge which extends over the top of a support bar when the respective sheet of radiation shielding material is suspended from the respective support bar. 17. The radiation shielding barrier wall assembly of claim 12 further comprising a corner assembly for a bend in the wall, the corner assembly comprising radiation shielding material attached to sheet metal, the corner assembly being attached to a stud at one side of the corner assembly, and attached to another stud at an opposite side of the corner assembly, and the corner assembly having a bend between the side and the opposite side. 18. The radiation shielding barrier wall assembly of claim 1 in which the sheets of radiation shielding material comprise radiation shielding lead panels. 19. A radiation shielding barrier wall assembly comprising:wall elements including studs;sheets of radiation shielding material supported by the wall elements;adjacent radiation shielding sheets overlapping on either side of a portion of a stud; andin which at least a stud is elongated in a first direction, and has a cross section in the plane perpendicular to the first direction having bends and at least a leg between the bends, the cross section of the stud comprising a first leg at one end of the cross section and a second leg at another end of the cross section and further comprising an offset leg located between the first leg and the second leg, the offset leg being arranged to allow a sheet or radiation shielding material supported by a wall element to one side of the stud to extend adjacent to the offset leg to overlap with a sheet of radiation shielding material supported adjacent to the offset leg by a wall element to the other side of the stud. 20. The radiation shielding barrier wall assembly of claim 19 further comprising a restraining bar attached to the at least a stud to hold the sheet of radiation shielding material extending adjacent to the leg. 21. The radiation shielding barrier wall assembly of claim 19 in which the wall elements include support bars attached to and extending between the studs, and the sheets of radiation shielding material are suspended from the support bars. 22. The radiation shielding barrier wall assembly of claim 19 in which the wall elements include a substrate to which the radiation shielding material is attached. 23. The radiation shielding barrier wall assembly of claim 22 in which the substrate comprises plywood, fibreboard or drywall. 24. The radiation shielding barrier wall assembly of claim 22 in which the radiation shielding material is laminated to the substrate. 25. The radiation shielding barrier wall assembly of claim 22 in which the substrate is attached to brackets extending between and attached to the studs. 26. The radiation shielding barrier wall assembly of claim 19 further comprising finishing material attached to the studs and enclosing the sheets of radiation shielding material. 27. The radiation shielding barrier wall assembly of claim 19 in which the studs extend between a top track and a bottom track. 28. The radiation shielding barrier wall assembly of claim 19 further comprising a corner assembly for a bend in the wall, the corner assembly comprising radiation shielding material attached to sheet metal, the corner assembly being attached to a stud at one side of the corner assembly, and attached to another stud at an opposite side of the corner assembly, and the corner assembly having a bend between the side and the opposite side.