testing of construction works - moreton bay regional … · testing of construction works 1. the...

R20 of 13 June 13

Postal Address Development Services Internet PO Box 159 Ph: 07 3205 0555 www.moretonbay.qld.gov.au Caboolture QLD 4510 Fax: 07 3205 0599 [email protected] ABN: 92 967 232 136 Testing of construction works

1. The subdivider’s engineer shall be responsible for ensuring that all works are tested in accordance with the appropriate standards to the satisfaction of council’s subdivision’s engineer.

2. Minimum compliance testing frequencies are given in appendix A of this Technical Note. The frequencies given shall be used to determine the total number of tests required.

3. Testing log sheets (sample log sheets in Appendix B) and test certificates shall be submitted for the following works:

a. Compaction – earthworks, roadworks, pavement and all trench backfill; b. Concrete works; c. Roadworks surfacing (suppliers log sheets, including surface temperature, discharge

temperature and rolling temperature); d. Pressure tests of sewer mains; e. Pressure tests of water mains; f. Water quality tests.

Test report

Prior to the works being accepted ‘on maintenance’ by council, the subdividers engineer shall submit and have approved by council a test report which includes:

Copies of all test certificates for the works, bound and indexed; All relevant log sheets for testing of the works; and Marked plans shall be submitted with the location, test reference number and compaction result for

the following: o Pavement (i.e. base course, sub-base course and select material); o Earthworks; o Allotment fill; o Trench backfill (for sewer, water and stormwater).

Separate plans for earthworks and pavement compaction would be anticipated.

Technical Note No. 8 Testing requirements for development works

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Appendix A Schedule of minimum compliance testing frequencies

Activity Operation Test Minimum frequency 1. Clearing and grubbing Visual inspection 2. Ground surface treatment Product approval by council required As per manufacturer’s recommendations 3. Earthworks Backfill replacement of unsuitable material Compaction (field density) 1 per 100m or, 1 per location per 500mm layer Allotment fill Compaction (field density) AS3798 Table 8.1 Roadworks fill formation Compaction (field density) Greater of: 1 per 250m3; per 2 layers (>400mm depth) or,

1 per 100m per 2 layers (>400mm depth) Minor dam embankments Geometrics

Materials Compaction (field density)

1 per 40m 1 per 200m 1 per 100m

Levees, catch banks/drains Geometrics Compaction (field density) Geometrics

1 per 50m 1 per 100m 1 per 50m

4. Roadworks Subgrade Soaked CBR Compaction (field density) Geometrics

1 per change of material (also refer Pavement Design Manual) 1 per 80m and < 1 per road 1 per 20m

Replacement of unsuitable material Soaked CBR Materials Compaction (field density)

1 from each source of material 1 from each source of material 1 per 50m; or 1 per location per 2 layers ( > 400mm depth)

Unbound Pavement Materials CBR Compaction (field density) Geometrics

1 per 500m 1 per 10,000m 1 per 100m per course or layer 1 per 20m

Subsoil drains Materials Geometrics

1 per 1,000m 1 per 50m

Concrete kerb, kerb and channel, invert, etc.

Materials Geometrics

1 per 500m 1 per 20m

Lean mix backfill Materials Concrete strength

AS 3600 AS 3600

AC Materials Compaction (field density) Geometrics Thickness

1 per 250t 1 per 100t 1 per 20m 1 per 80m, and < 1 per road (test location 1m from crown, alternate sides)

Bitumen seal Materials (aggregate) Geometrics Materials (binder)

1 per 100m 1 per 20m 1 set per tanker

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Activity Operation Test Minimum frequency 5. Stormwater Reticulation Compaction to trench bottom Compaction (field density) 1 per 40m (if ordered) Bedding Materials (sieve analysis) 1 per 200m Backfill Compaction (field density) 1 per 40m per 2 layers ( > 400mm depth) and 1 set of

tests per line (MH to MH) Concrete pipe Certification by manufacturer to cover all pipes FC pipe Certification by manufacturer to cover all pipes Manhole CI covers and frames Certification by manufacturer to cover all items Manhole and gully concrete Materials

Concrete strength AS3600 AS3600

Gully grates Certification by manufacturer to cover all items 6. Sewerage Reticulation Compaction to trench bottom Compaction (field density) 1 per 40m (if ordered) Bedding Materials (sieve analysis) 1 per 200m Backfill Compaction (field density) 1 per 40m per 2 layers (> 400mm depth) and 1 set of tests

per line (MH to MH) First Test 750mm above obvert of pipe uPVC pipes and fittings Certification by manufacturer to cover all pipes and fittings Completed pipeline Pressure test to all lines (after backfill) Manhole CI covers and frames Certification by manufacturer to cover all items Manhole concrete Materials


7. Water Reticulation Compaction to trench bottom Compaction (field density) 1 per 40m (if ordered) Bedding Materials (sieve analysis) 1 per 200m Backfill Compaction (field density) 1 per 40m uPVC pipes and fittings Certification by manufacturer to cover all pipes and fittings DICL pipe and CI fittings Certification by manufacturer to cover all pipes and fittings 8. Service conduits Compaction to trench bottom Compaction (field density) 1 per road crossing (to natural subgrade) (if ordered) Bedding Materials (sieve analysis) 1 per 200m Backfill Compaction (field density) 1 per road crossing per 2 layers (if not sand) Pipes Certification by manufacturer to cover all pipes and fittings 9. Culverts Compaction to foundation base Compaction (field density) 1 per 50m3 Bedding Materials (sieve analysis) 1 per 200m3 Cast insitu concrete Materials

concrete strength AS3600 AS3600

Precast concrete items Certification by manufacturer to cover all items Backfill Materials

Compaction (field density) 1 per 25m Greater of : 1 per 20m3 or 1 per 2 layers (> 400mm depth)

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Activity Operation Test Minimum frequency 10. Concrete structures Foundation base Compaction (field density) 1 per 50m3 Piles All AS2159 Cast Insitu Concrete Materials


11. Road furniture and signage Supply Certification by manufacturer to cover all materials Installation All Council or Australian Standards 12. Fencing and guard rail Supply Certification by manufacturer to cover all materials Installation All Council standards 13. Street lighting poles Installation Geometrics / location All poles

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Appendix B Sample Testing Log sheets Compaction Test Log Project: Testing Authority: Test No. Type Date Location R.L. Test Density

Ratio REQ=D Density Ratio

Pass or Fail Retest No.

Comments (Lot No.)

Standard types: EF = Earthworks Fill AF= Allotment fill RF = Roadworks (formation) fill TB = Trench backfill S = Subgrade BL = Blanket course (Roadwork) B = Base (Top) course SB = Sub-base (Bottom) course

Signature: Date:

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Concrete Log Project: Job No.: Delivery Design Sampling Test Date Dkt No Qty MPa Agg Size Slump Additives Time Slump Cyl No Age MPa

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Pressure Testing Log – Gravity Sewer Mains Project: Ref No.: Subject: Date: Line Time (Mins) Pressure (KPA) Comments Start Finish Duration Start Finish Loss

Consulting Engineer’s Signature: Date:

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Pressure Testing Log – Water mains Project: Ref No.: Subject: Date: Line Length (m) Diam. (mm) Test Pressure (KPA) Period Volume losses (Litres) Pass or fail Start Finish Actual Allow.

Maximum allowable loss = 0.015 litres / m length / 100mm pipe diameter (2 hr. test) Testing Officer’s Signature: Date:

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Appendix “C” Standard construction tolerances 1) Clearing

a) Roadworks formation - 0m + 3m

b) Bulk earthworks not outside approved area c) Designated building areas not outside approved area d) Pipelines

i) Centreline - 0m + 3m ii) Not outside approved area

2) Bulk earthworks a) Finished level

(i) ± 200mm (ii) Free drainage at not less than min. grade (iii) Residential allotments not less than specified levels adjacent to rivers, creeks or other

drainage features. b) Formation position ± 200mm

3) Road formation

a) Formation level + 15mm - 30mm

b) Box width + 150mm - 0mm

c) Formation width i) Top position for cut batter + 200mm

- 0mm ii) Toe position for cut batter + 200mm

- 0mm iii) Top position for fill batter + 200mm

- 0mm iv) Toe position for fill batter + 200mm

- 0mm v) Batters steeper than 1:4 clear of service allocations

d) Batter slope i) Not steeper than specified; ii) Maximum variation to plane of cut batter = 150mm iii) Maximum variation to plane of fill batter = 300mm

e) Formation limits i) Trunk collector, sub-arterial and arterial road formation contained within road reserve ii) Comply with relevant verge cross section

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4) Unbound Pavement

a) Finished level i) Any location +25mm

-15mm ii) Average ± 10mm

b) Surface i) Maximum deviation from 3m

Straight edge = 8mm ii) No ponding

c) Crossfall i) Any location + 0.50%

- 0.20%

ii) Average tolerance ± 0.20% d) Thickness

i) Each layer + 15mm - 10mm ii) total depth ± 25mm and < min.

e) Match to lip level of concrete channel i) For AC seal lip minus seal thickness + 0mm

- 5mm ii) For bitumen seal + 5mm

- 15mm f) Surface evenness (AUSTROADS Count Rate) ≤ 60 counts / km 5) Seal

a) A.C. Seal i) Match to lip level of concrete channel + 6mm ii) Thickness - individual test + 20mm

- 3mm - Average + 8mm

- 0mm iii) crossfall - any location + 0.50% - 0.20% - average ± 0.20%

iv) Horizontal alignment ± 50mm v) Width - unkerbed + 150mm

- 0mm - kerbed no gap at channel lip

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b) Bitumen Seal i) match to lip level of concrete channel + 10mm - 5mm

ii) Crossfall - any location + 0.50% - 0.20% - average ± 0.20%

iii) Horizontal alignment ± 50mm iv) Width - unkerbed + 150mm - 0mm - kerbed No gap at channel lip

6) Kerb & Channel

a) Line and level ± 10mm b) No ponding c) Grade not less than 0.4% slope d) Cross section dimensions ± 5mm e) Maximum deviation from 3.0m 5mm

straight edge

7) Stormwater Drainage a) Manholes

i) Plan position (longitudinal and lateral) ± 75mm ii) No ponding in invert iii) Top surface level + 25mm

- 15mm iv) Match to adjacent surface - unpaved surface ± 25mm - paved surface ± 6mm

b) Catchpits / Gullies i) Longitudinal location ± 100mm ii) Lateral location ± 15mm iii) No ponding in invert iv) Top surface of backstone true to line and level of adjacent kerb

c) Pipework i) Invert level ± 20mm ii) Not less than minimum grade iii) Joint gap = specified gap - 0mm

+ pipe dia 100 OR + 20mm whichever is least

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8) Interallotment drainage

a) Pits and chambers i) Plan position (longitudinal & lateral) ± 100mm ii) No ponding in invert iii) Wholly within one property iv) Top surface level relative to adjacent ground level

- Grated + 0m - 50mm

- Ungrated ± 25mm 9) Sewerage reticulation (Gravity)

a) Manholes i) Plan position (longitudinal & lateral) ± 75mm ii) Wholly within one property iii) No ponding iv) Top surface level ± 15mm v) Match to adjacent surface

- properties + 85mm - 115mm

- footpaths (grassed) + 10mm - 40mm - paved areas ± 6mm b) Pipework

i) invert level ±15mm ii) not less than minimum grade iii) not more than maximum grade iv) true to line v) no ponding

10) Sewerage reticulation (rising mains) a) Alignment of pipe and fittings i) ±100mm ii) within approved service corridor b) cover specified i) + 100mm - 0mm ii) adequate for installation of fittings c) location of fittings i) longitudinal ± 200mm 11) Water reticulation a) Alignment of pipe and fittings i) ± 100mm ii) within approved service corridor iii) adequate for installation of fittings b) cover specified + 0mm - 100mm

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c) Location of fittings i) longitudinal ± 200mm 12) Fencing a) General i) true to line ii) plan position ± 50mm lateral iii) not less than specified height b) Noise attenutation fence i) true to line ii) plan position ± 50mm lateral iii) not less than specified heights iv) no gaps 13) Concrete footpath a) Horizontal position ± 100mm b) Vertical alignment + 20mm - 10mm c) Width + 25mm - 10mm d) Surface i) maximum deviation from 3m straight edge 8mm ii) no ponding

1. Works constructed outside these tolerances may not be accepted on maintenance. 2. Any deviations outside these tolerances as approved by Council’s Engineer must be shown

on the ‘As constructed’ drawings in accordance with Council’s Design guidelines. 3. These tolerances have been compiled from a number of specifications and publications.

Variations may exist between these tolerances and those indicated in some specifications, in which case, the applicable tolerances shall be at the discretion of Council’s Engineer.

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