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Excavation and Backfilling Checklist pdf

Engineering Stage

Check all RFC dwgs have been issued

Specialized subcontractor (s)approval for Excavation, Shoring, Dewatering and backfilling

Soil improvement material, backfilling material approved

Civil Construction Stage

All NOCs likes excavation permit from concern Authorities, Electrical services, Sewerage, Telecom etc. related authorities prior to start Excavation.

Approved Method statement for excavation and backfilling

Identification of buried services and actual trial pit reports

Check the soil investigation report

Site safety precaution / Manual.

Protection / re routing of existing buried services prior to start excavation

Municipality approval for Dewatering and disposal of excavated material

Mobilization, Site fencing , sign board Installation, site surveying, Establishment of bench marks, demarkation and confirmation of Municipality prior to start Excavation

Installation of shoring as shown in drawings

Proper slope, safe access for equipment, safe access for manpower, soil protection, barricading and warning signs to the excavated area during total process of works.

Certificates / License for all the Machinery works, valid Permits, Valid DL for working at site

Safe Excavation process and implementation of safety requirements

Inspection of the excavated area to the widths, lengths, depths, levels and slope as shown in Approved drawings for footings or raft

Ground water table level shall be brought down to minimum 300mm below bottom of blinding level to release for formation level Field Density Test

Check the formation level and sizes shall be as per Approved drawings.

Formation level Field Density Test

Laying of Road base material minimum 200mm or of as per soil investigation recommendations.

Plate Load Test & Field Density Test on Road base material and release for blinding

Release certificate / RFI of Water proofing to concreting works and completed underground services to start backfilling

Backfilling material is free from, shells, stones, waste, wood and other organic materials.

Backfilling in layers not exceeding 250 mm

Field density test at each layer

Test Reports review

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