If at any time during the installation of a slotted pipe it is found that the enclosed filter fabric has become loose on the pipe it shall be restretched to its correct position. If restretching causes any damage to the filter fabric, the damaged filter fabric shall be removed from the pipe and replaced with undamaged filter fabric. ANNEXURE QUALITY CONTROL TESTING (Specifications C230, C231, C232) Activity Key Quality Verification Maximum Minimum Test Requirements Size Test Frequency Method MANDATORY TESTING Nil AUDIT TESTING IF ORDERED BY COUNCIL – Material Supply Material Quality - Supplier's documentary evidence and certification of: 1 contract/size 1 per type/size Filter Material - Grading (Type A, B, C, D) 1 contract/size 1 per type AS1141.11 1 contract/size 1 per type - Coefficient of Permeability AS1289.E5.1 (Type B) ASTM-D2434-68 - Grading Variation after 1 contract/size 1 per type AS1141.11 Treatment (Type B) - Wet Strength (Type C, D) 1 contract/size 1 per type AS1141.22 - 10% Fines Wet/Dry 1 contract/size 1 per type AS1141.22 (Type C, D) Geotextile 1 contract 1 per type Excavation - Line and Grade 1 drainage line 1 per drainage Survey Trench Base line Compaction 1 drainage line 1 per 200 lin m* AS1289.5.4.1 Bedding and Backfill - Filter Material Compaction 1 drainage line 1 per drainage AS1289.5.4.1 line - Selected Backfill Compaction 1 drainage line 1 per 200 lin m* AS1289.5.4.1 - Earth Backfill Compaction 1 drainage line 1 per 200 lin m* AS1289.5.4.1 Drainage Mat Geometry 2000m2 1 Section per Survey 25m * Note: or part thereof, per lot
If at any time during the installation of a slotted pipe it is found that the enclosed filter fabric has become loose on the pipe it shall be restretched to its correct position. If restretching causes any damage to the filter fabric, the damaged filter fabric shall be removed from the pipe and replaced with undamaged filter fabric. ANNEXURE QUALITY CONTROL TESTING (Specifications C230, C231, C232) Activity Key Quality Verification Requirements Maximum Size Minimum Test Frequency Test Method MANDATORY TESTING Nil AUDIT TESTING – IF ORDERED BY COUNCIL Material Supply Material Quality - Supplier's documentary evidence and certification of: 1 contract/size 1 per type/size Filter Material - Grading (Type A, B, C, D) 1 contract/size 1 per type AS1141.11 - Coefficient of Permeability (Type B) 1 contract/size 1 per type AS1289.E5.1 ASTM-D2434-68 - Grading Variation after Treatment (Type B) 1 contract/size 1 per type AS1141.11 - Wet Strength (Type C, D) 1 contract/size 1 per type AS1141.22 - 10% Fines Wet/Dry (Type C, D) 1 contract/size 1 per type AS1141.22 Geotextile 1 contract 1 per type Excavation - Trench Base Line and Grade 1 drainage line 1 per drainage line Survey Compaction 1 drainage line 1 per 200 lin m* AS1289.5.4.1 Bedding and Backfill - Filter Material Compaction 1 drainage line 1 per drainage line AS1289.5.4.1 - Selected Backfill Compaction 1 drainage line 1 per 200 lin m* AS1289.5.4.1 - Earth Backfill Compaction 1 drainage line 1 per 200 lin m* AS1289.5.4.1 Drainage Mat Geometry 2000m2 1 Section per 25m Survey * Note: or part thereof, per lot
CMDG%20C230%20-%20Subsurface%20Drainage%20-%20Ver%203%20July%202018%20(PH).docx