7
GB
CIVIL WORK AND INST
ALLA
TION
BUILDING SPECIFICATIONS
2
2.1.
Excavation work
Any vegetation will be cleared, and any elements or small infrastructures will be removed, should there be any.
The whole site will be cleared and the vegetation soil all over it will be removed.
Once the desired level has been reached, soil moisture and compaction will be checked.
2.2. Filling work and embankment
'Esplanade' or 'embankment' is the finished excavated area where the paving layers (bed and slab) will be
built.
The esplanade must be correctly compacted until it is totally even and homogeneous, which requires a number
of roller operations.
•
Minimum esplanade type
E1 (5 < CBR < 10)
If the esplanade needs to be formed or if the features of the existing plot are not suitable, these can be either
improved by means of stabilization, or replaced at an adequate depth by a bed with the right features.
•
Materials to be used
Features:
-
Minimum: Adequate ground (as per PPTG PG3)
-
Stones with max. diameter below 10 cm. Sieved with
sieve no. 200, 35% of weight.
-
LL < 40
-
Maximum density, normal Proctor test, 1.75 kg/dm3,
CBR>5
-
Organic matter < 1%
-
Soluble salts (including gypsum) < 0.2%
In the esplanade work and the subsequent bed, please bear in mind that the work to be done shall cover an
additional 3.0 m band parallel to the boundaries of the wash tunnel area so as to allow for drainage and for a
transition between the facility level and that of the adjoining areas.
2.3. Bed
Granular material layer between the esplanade and the slab, consisting of natural aggregates or aggregates
derived from quarry stone grinding or natural gravel, or clay/marl-free selected soils.
To be compacted in a single layer (15 cm course minimum) until 97% PM is reached.
•
Type
-
Wet-mix macadam
•
Thickness
-
See civil works ground plan.
Summary of Contents for Twash 4TA6000
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