Page 51 - Building Regulation and Design Guidelines - Structural (Grey Code)

SECTION: 3 GUIDELINES FOR PRE STRESSED CONCRETE WORKS (SLABS) SECTION: 3 GUIDELINES FOR PRE STRESSED CONCRETE WORKS (SLABS)

3.6.2.6 CONNECTIONS Design Considerations:
Typical connections details shown in Figs (3.17 a - f) shall be With large factors of safety, friction may Topping if
followed. transfer nominal forces required
Additional structural integrity ties may be
required
1. The connection must have adequate strength to transfer
the forces to which it will be subjected during its lifetime.
Fabrication Considerations:
2. The connection must have ability to undergo relatively Clean and simple
large inelastic deformations without failure. Bearing strip
3. The stresses caused by restraint of creep, shrinkage and Erection Considerations:
temperature change (Volume change) must be considered Clean and simple P.C. or C.I.P.
in the design. concrete
beam
4. The connection must meet the durability and fire resistance Fig. 5.3.3
requirements.

5. Connections shall be checked for the expected earthquake
and wind forces.
Design Considerations:
with beaded
Can transfer internal diaphragm forces stud anchors
Can be designed as structural integrity tie Plate with deformed With
bar grouted in returns Design Considerations: Reinforcement draped
slab keyway Topping if over beam and grouted
Fabrication Considerations: required Can transfer internal diaphragm forces in slab keyway
Can be designed as structural integrity tie
Advantageous to have no hardware in slab Consider concrete cover on reinforcement Grout Topping if
Beam embedments must line up with slab over beam required
joints
Accommodates variations in slab length Bearing strip
Fabrication Considerations:
Erection Considerations: P.C. or C.I.P.
Advantageous to have connection completed concrete Slab layout must have opposing joints lined up
beam
by follow-up crew
Fig. 5.3.1 Grout Bearing strip
position
Erection Considerations:
Clean and simple P.C. or C.I.P.
Design Considerations: Reinforcement concrete
grouted in slab
Can transfer internal diaphragm forces keyway beam
Can be designed as structural integrity tie Topping if
Grout required Fig. 5.3.4
Fabrication Considerations:
May increase beam reinforcement for
shallower beam
Layout must have opposing slab joints lined up Bearing strip
Erection Considerations: P.C. or C.I.P. Fig. (3.17b) Connections
concrete
Clean and simple beam
Fig. 5.3.2
Fig. (3.17a) Connections
100 101