1. Qatar Petroleum Procedure
DESIGN & CONSTRUCT
NEW ORBITAL HIGHWAY AND TRUCK ROUTE (P023)
Contract 3: Orbital Highway Mesaieed to Salwa Road
PROJECT ID: IA 12/13 C 062 ST
26 October 2015
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Removal of QP Pipeline bund wall
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Steel plates will be set prior to installation of arch segment
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Restricted zone during element lifting
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Arch Elements transported on flatbed trailer
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Off-Loading Arch elements using Lifting beam
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Storage of Arch Elements on Firm Ground and Proper Dunnage
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Marks on footing keyway
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Marks on unit side face for fast alignment
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Turning of Arch element with Side Brackets
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Installation of steel bracket on the segment
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First arch unit staggered by half width
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Total Station Survey Check of Crown Alignment
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Element in Footing Keyway
(Unit position adjustment using hardwood wedges)
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STEP 4
RELEASE CRANE B.
CRANE A CONTINUES PLACING UNIT
Erection Sequence of the Elements (units)
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Grouting Foundation Keyway
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Fig. A. Backfill Material zones
Fig. B. Backfill material grain size
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Up to existing slope
or final grade
Or minimum one
span
Max
Backfill placement levels - Max. Differential height < 0.50 m
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Crown Beam Reinforcement Prepared According to Approved Drawings
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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QP Pipe line protection structure - QP Arch Erection
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Minimum fill cover before heavy plant can cross the arch