1985 Ed.] Building (Construction) Regulations
[CAP. 123
(6) Whenever the vertical reinforcement is taken to assist in resisting compression, transverse reinforcements in the form of cross-ties shall be provided to prevent the vertical reinforcement from buckling.
(7) The pitch of the transverse reinforcement shall not exceed-
(a) 2 times the thickness of the reinforced concrete wall; or
(b) 16 times the diameter of the smallest vertical reinforcement in the wall; or
(c) 300 mm,
whichever is the least dimension.
(8) The effective width of a reinforced concrete wall subject to concentrated loads, shall not exceed-
(a) the distance measured from centre to centre between concentrated loads; or
(b) width of bearing plus 4 times the wall thickness on each side of the concentrated load.
whichever is the smaller dimension.
(9) A wall shall be effectively supported laterally by-
(a) horizontal reinforced concrete slabs of adequate thickness to prevent buckling; or
(b) beams spaced with a clear spacing of not more than a distance of 8 times the thickness of the wall; or
(c) reinforced concrete cross walls, where the wall is stiffened by closely spaced cross walls such that the length of wall between adjacent cross walls is less than the effective height, the slenderness ratio shall be assumed to be the ratio of this length to the wall thickness.
(10) In paragraphs (2) and (3) "lateral reinforcement" means reinforcements parallel to the length of the wall.
B 79
[Subsidiary]
130. (1) Reinforcements shall not be connected by welding without the approval of the Building Authority.
(2) When reinforcements are connected by welding, they shall conform to the appropriate provisions of BS 693:1960 or BS 5135:1974.
131. (1) Computation of stresses shall accord with the laws of mechanics and the recognized general principles relating to the design of reinforced concrete.
(2) In the computation of stresses it shall be assumed that-
reinforcement. L.N. 294/76.
Basis of design.
1985 Ed.] Building (Construction) Regulations
[CAP. 123
(6) Whenever the vertical reinforcement is taken to assist in resisting compression, transverse reinforcements in the form of cross-ties shall be provided to prevent the vertical reinforcement from buckling.
(7) The pitch of the tranverse reinforcement shall not exceed-
(a) 2 times the thickness of the reinforced concrete wall; or
(b) 16 times the diameter of the smallest vertical reinforcement
in the wall; or
(c) 300 mm,
whichever is the least dimension.
(8) The effective width of a reinforced concrete wall subject to concentrated loads, shall not exceed-
(a) the distance measured from centre to centre between
concentrated loads: or
(b) width of bearing plus 4 times the wall thickness on each
side of the concentrated load.
whichever is the smaller dimensión.
(9) A wall shall be effectively supported laterally by
(a) horizontal reinforced concrete slabs of adequate thickness
to prevent buckling; or
(b) beams spaced with a clear spacing of not more than a
distance of 8 times the thickness of the wall; or
(c) reinforced concrete cross walls, where the wall is stiffened by closely spaced cross walls such that the length of wall between adjacent cross walls is less than the effective height, the slenderness ratio shall be assumed to be the ratio of this length to the wall thickness.
(10) In paragraphs (2) and (3) "lateral reinforcement" means reinforcements parallel to the length of the wall.
B 79
[Subsidiary]
130. (1) Reinforcements shall not be connected by welding Welding of without the approval of the Building Authority.
(2) When reinforcements are connected by welding, they shall conform to the appropriate provisions of BS 693:1960. or BS 5135:1974.
131. (1) Computation of stresses shall accord with the laws of mechanics and the recognized general principles relating to the design of reinforced concrete.
(2) In the computation of stresses it shall be assumed that-
reinforcement. L.N. 294/76.
Basis of design.
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