Page 42 - 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)

Dead end machine Hydraulics Pump Stressing Jack

Grouting machine Stapler gun Duct Machine
Fig. (3.5) Ducts
Fig. (3.3) Pre stress equipment e. Duct Chairs, Fig. (3.6):
Chairs should be machine made and have epoxy coating for support
c. Strands, Fig.(3.4): parts and at least up to 20mm over the forms. Chairs distribution
Specialist contractor shall have strands supplier approval from shall be according to the specialist shop drawings, and should be of
Dubai Central Lab (DCL) and mill certificates. 6mm Diameter at least.

Fig. (3.6) Ducts Chairs

Fig. (3.4) Pre stress strands
f. Approval of shear stud :
Shear studs should be used in slabs with less than 200mm thickness
d. Ducts: if required by the design. Stud materials should be from specialized
Specialist contractor shall apply for the ducts supplier approval qualified factory, Fig.(3.7).
along with all specifications and certificates. Specialist contractor
shall have ducts supplier approval along with all specifications and
certificates.
Thickness of duct should not be less than 0.4mm. The duct size
shall be suitable to accommodate the required strands, provided
that the net clear area for grouting should be more than twice the
ducts cross sectional areas. Fig. (3.7) Shear stud
Corrugated and flat galvanized metal ducts are accepted, Fig. (3.5)

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