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SECTION 3 GUIDELINES FOR PRE STRESSED CONCRETE WORKS (SLABS) SECTION: 3 GUIDELINES FOR PRE STRESSED CONCRETE WORKS (SLABS)
3.1 GENERAL 3.2 PRE STRESSED CONCRETE SYSTEMS
The current pre stressed guidelines is relevant to the post tensioning bonded Pre stressed concrete specialist contractor shall have qualified international
systems only, Fig. (3.1), other pre stressed systems shall be submitted to CED – recognized pre stressing system to perform in accordance with its materials and
Trakhees for review and approval prior to commence any related work. technical requirements.
Vent pipe Vent pipe The specialist contractor shall have exclusive agency agreement with the system
Formed sleeve Bulb provider including supplying the local specialist with materials, all necessary
Oblong sleeye pipe Oblong sleeve pipe
Mastic Mastic Flat duct technical support, and skilled manpower wherever is needed.
Flat duct
This agreement shall be registered and approved from relevant statutory
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authority as appropriate and shall be yearly renewed, or confirmed by letter from
mother system agency if the period of agreement is more than one year.
300/300/400w 950 3.2.1 MATERIALS
Steel Plate
a. Anchorage system, Fig. (3.2).
Specialist contractor shall submit initially certificate of origin,
L1 material catalogue and full sample supported with technical data
sheet, if necessary, with no more than one year old.
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55 55 55 55 55 55 55 55
260 260
Fig (3.2) Anchorage system
b. Pre stressed concrete equipment:
Specialist contractor shall submit the technical data for pre
stressing equipment which will be used in the works. Jacks,
hydraulic pumps, dead end machine, grouting machine, and duct
machine (If applicable), Fig. (3.3).
Fig (3.1): Pre stress bonded system The submission should include the calibration test for the jacks.
Hydraulic jacks calibration should be submitted for each project,
the calibration should be dated not more than 6 months prior to
submission date.
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