a
The flange plate of thickness of the underlying beam should not be less than 7.6mm (0.4 times the stud diameter)
b
The spacing of the studs should not be less than:
(i) in the direction of the shear force = 95mm
(ii) transverse to the direction of shear force = 76mm
c
The longitudinal spacing of the studs should not exceed the lesser of 600mm or 4 times the slab depth
d
Where studs are required to be through-deck welded across the line of span of the decking, they must be spaced to suit the configuration of the deck profile
e
The distance between the edge of a stud and the edge of the steel beam flange should not be less than 20mm
f
The concrete cover over the stud should not be less than 15mm. If the cover is required to protect the connector against corrosion, it should not be less than 20mm |
g
The studs after welding should extend not less than 35mm above the top flange of the steel deck i.e.
Multideck 60-V2 use standard stud length 95mm L.A.W.
Multideck 80-V2 use standard stud length 120mm L.A.W.
Multideck 50-V2 use standard stud length 95mm L.A.W.
h
The top flanges of the beam must be unpainted if studs are to be used
i
Welding equipment should be of NELSON manufacture or similar, with a minimum of 200KVA diesel generator, or mains power at 415V 3-phase fused at 100A per phase.
j
Where studs are required for composite beam action strength reduction factors should be calculated to BS 5950: Part 3: Section 3.1
NB. The flange of the supporting beam must be of a sufficient width where shear studs are provided in pairs. |
)
)
)
)
)