Construction Methodology

All about construction, in simple words.

Foundation specifications

Standards

Standard Code Organization Scope Key Requirements Certification Required
EN 1997 European Committee for Standardization Geotechnical Design Design requirements Design verification
ACI 318 American Concrete Institute Structural Concrete Strength requirements Structural certification
BS 8004 British Standards Institution Foundations Design standards Foundation certification
AS 2159 Standards Australia Piling Design Technical standards Design certification
ASTM D1586 American Society for Testing and Materials Soil Testing Testing standards Testing certification
ISO 22477 International Organization for Standardization Geotechnical Testing Test requirements Test verification

Foundation Types:

Type Application Load Capacity Key Features
Spread Footing Light-medium loads 100-500 kPa Simple construction
Raft Foundation Heavy uniform loads 200-800 kPa Even distribution
Pile Foundation Heavy point loads 500-5000 kN Deep support
Strip Foundation Wall loads 150-400 kPa Linear support
Pad Foundation Column loads 200-600 kPa Point support
Deep Foundation Weak soil conditions >1000 kN Stability in poor soil

Soil Investigation:

Test Type Parameters Standards Testing Method
SPT N-value ASTM D1586 Boring test
CPT Cone resistance ASTM D3441 Penetration test
Bore Holes Soil profile ASTM D1452 Core sampling
Load Test Bearing capacity ASTM D1194 Plate load test
Lab Tests Soil properties ASTM D2487 Laboratory analysis
Groundwater Water table ASTM D4750 Monitoring wells

Design Parameters:

Parameter Requirements Standards Verification
Bearing Capacity Site specific EN 1997 Calculation/Testing
Settlement Allowable limits BS 8004 Settlement analysis
Stability Safety factors EN 1997 Stability analysis
Reinforcement Design loads ACI 318 Structural calc
Concrete Grade Strength class EN 206 Mix design
Ground Water Protection measures Local codes Drainage design

Construction Requirements:

Aspect Specifications Standards Testing Required
Excavation Depth/Width Safety codes Survey check
Reinforcement Bar size/spacing ACI 318 Steel inspection
Concrete Mix design/Strength EN 206 Strength test
Waterproofing Material/Method BS 8102 Water test
Compaction Density requirements ASTM D1557 Density test
Curing Time/Method ACI 308 Curing verification

Quality Control:

Test Frequency Standards Documentation
Concrete Strength Every pour EN 12390 Test reports
Soil Compaction Layer wise ASTM D1557 Density reports
Reinforcement Pre-pour ACI 318 Inspection report
Dimensions Each element Design specs Survey report
Water Table During construction Site requirements Monitoring log
Settlement Post construction BS 8004 Settlement record

Load Considerations:

Load Type Analysis Required Standards Verification
Dead Load Structure weight EN 1991 Calculation
Live Load Occupancy load EN 1991 Load analysis
Wind Load Wind forces EN 1991 Wind calculation
Seismic Load Earthquake forces EN 1998 Seismic analysis
Dynamic Load Equipment loads ISO 2631 Dynamic analysis
Settlement Load Differential settlement BS 8004 Settlement calc

Environmental Factors:

Factor Requirements Standards Control Measures
Groundwater Protection level BS 8102 Waterproofing
Chemical Attack Resistance class EN 206 Concrete spec
Frost Action Depth requirements Local codes Depth control
Soil Erosion Protection measures Environmental Erosion control
Drainage Water management Local codes Drainage system
Contamination Soil treatment Environmental Treatment plan

Documentation Requirements:

Document Content Frequency Storage
Soil Report Ground conditions Pre-construction Project file
Design Calculations Load analysis Design phase Design file
Construction Drawings Details/Dimensions Construction Project docs
Test Reports Quality control As performed QC records
As-Built Records Final construction Post-construction Project archive
Monitoring Data Settlement/Movement Ongoing Monitoring file

Maintenance Requirements:

Item Frequency Standards Documentation
Visual Inspection Annual BS 8004 Inspection report
Settlement Monitor Quarterly ISO 4866 Monitor report
Crack Survey Annual ACI 224.1R Survey report
Water Ingress Bi-annual BS 8102 Inspection log
Structural Review 5-yearly EN 1997 Review report
Remedial Works As required Design codes Work records

Emergency Procedures:

Situation Response Standards Documentation
Excessive Settlement Investigation BS 8004 Investigation report
Water Ingress Remedial action BS 8102 Action report
Structural Damage Expert assessment EN 1997 Assessment report
Ground Movement Monitoring increase ISO 4866 Movement record
Foundation Failure Emergency support Safety codes Emergency log
Soil Instability Stabilization Geotech codes Stability report
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