B 58
[Subsidiary]
CAP. 123]
Building (Construction) Regulations
1
Part of structure and kind of stress
[1985 Ed.
Mild steel complying with the appropriate provisions of BS 4360/1972
High yield stress
structural steel complying with the appropriate provisions of BS 4360: 1972
3
For material
not exceeding 25 mm in thickness or diameter
For material exceeding 25 mm in thickness or diameter
2.
The parts in compression--
(a) flexural stress in extreme fibres of slab bases
185
185
185
(b) flexural stress in extreme fibres of-
(i) beams and girders (other than plate girders)
150
210
190
or
or
or
14 200
14 200
14 200
Pkyr
lker
is the lesser
(ii) plate girders
OT
14 200
They
whichever
whichever
145
is the lesser
200
or
14 200
lkee
ko
whichever
whichever
is the lesser
is the lesser
whichever
is the lesser
185
or
14 200
1 km
whichever
is the lesser
3.
For parts in shear-
(a) on webs
100
or
140
120
or
or
700
[700]
[209]
whichever
whichever
| whichever
2
[700]
2
is the lesser
is the lesser
is the lesser
Webs of beams shall possess or be provided with adequate stiffness to prevent buckling.
(b) on shop rivets and turned bolts
(c) on field rivets
(d) on black bolts
90
130
115
80
110
110
60
The strength of rivets and bolts in double shear may be taken as 2 times that for single shear.
(e) other than on webs, rivets and bolts
100
140
120