ES_173527_BR_1059006_Conv_Lot 497 10 HILL STREET SUNSHINE BEACH QLD(C) · MCU18/0006.02

                                                                                                                                                                                                                                                                                            Project Job No. 173527

                                                                                                                                                                                                         Technical Notes
                                                                                                                                           Earth Works Specifications
                                                                                                                                           Batter Angles for Embankments:-
                         Typical Edge Beam Piering Details                                                                                 It is the builders responsibility to ensure that the site works do not undermine or place additional surcharge on any existing structures.
                                                                                                                                           If this can not be achieved STA Consulting Engineers must be contacted prior to any site works being undertaken.
                                                                                                                                           Batter angles must comply with local government requirements and are to conform as follows (Figure 1).                                  'L'
                                                                                                                                                                                                                                                                                                              Line
                                                                                                                                            Figure 1.                                                                                                                                                  Ground
                                                                                                                                                                                                                                                                                               Natural


                                  Option A - Bored Piers                                                                                                                      Fill Embankment                                                                                                        'H'
                                                                                                                                                                                                         Fill
                              Edge Beam Footing
                                                                                                                                                                                                                                                         Cut
       Slab                   Reinforcement
                                                                                   Slab Mesh                                                                       'H'                                                                                                   Cut Embankment
       Edge
                                                                                                                                                                       Line     'L'
                                                                                                                                                                Ground
                                                                                                                                                        Natural                            Fill, H = less than 2.0m


  Edge Beam
                                                                                                                                                                                           Material Type          Stable                                                   Clay
                                                                                                                                                                                                                                   Sand           Silt                                       Soft Soils
  Footing
                                                        Drilled Pier                                                                                                                      (Refer Bore Logs)        Rock                                        Firm Clay     Soft Clay

                                                                                                                                                             Embankment Slopes             Compacted Fill             2:3           1:2           1:4              1:2       Not Suitable    Not Suitable
                                                                                                                                                               (Height Length)
Refer page 1
                                                                                                                                                                                               Cutting                8:1           2:3           1:4              1:1            2:3        Not Suitable
                                                  Suitable Founding Material
of this report
                                                                                                                                                           Note: Retaining walls or other forms of soil retaining methods must be adopted where the slope ratio is greater than that
                                   350 Min.                                                                                                                indicated in the table above
                                                                                  350 Min.
                                                                                                                                           Fill Material and Compaction:-
                                                                                                                                           Organic material, highly reactive clays and large rocks are not suitable for use as fill. The fill is to be spread in 150 mm layers and extensively
                                                        1500 Max                                                                           track rolled with a drott. All earthworks to be carried out in accordance with the full requirements of AS3798, Guidelines for Earthworks for
                                                                                                                                           Commercial and Residential Developments.
                                                          Section                                                                          NOTE - In the instances where by significant levels of filling are observed, there will always remain the posibility of tilt as a result of differential
                                                                                                                                           settlement in the fill. Australian Standard (AS2870-2011) does not cater for tilting of the slab as a result of differential settlement within certified fil
                                                                                                                                           nor does the Australian Standard address the possible occurrence when shallow foundations are adopted.
                                                                                                                                           Drainage:-
                                                                                                                                           The external finished surface surrounding the dwelling must be drained to move surface water away from the building and graded to give a slope
                                                                                                                                           of not less than 50 mm over the first 1 m away from the building.


                                                                                                                                           Reinforcement Specifications
                                                                                                                                           Steel wire reinforcing fabric and bars to conform with AS1304 - Hard Drawn Steel Wire Reinforcing
                                                                                                                                           Fabric for Concrete) and AS1302 - Steel Reinforceing Bars For Concrete.
                                      Option B - Bulk Piers                                                                                Lap Lengths
                                                                                                                                           Trench Mesh - 500 mm in a straight line, or to the far face at "T" and "L" intersections
                                                                                                                                           Steel Bars - "N" Bars - 35 times the bar diameter.
                                                                                                                                           Corner Bars - required at all "T" and "L" intersections. Refer to the design drawings for
                                                                Edge Beam Footing                                                          the appropriate construction details.
                      Slab Mesh                                 Reinforcement
                                                                                                 Slab                                      Slab Fabric - One full panel of the fabric, so as the two outer-most transverse wires of each sheet
                                                                                                 Edge                                      are overlapped. As shown on the below detail (Figure 2).

                                                                                                                                                                              Figure 2.                          Slab Fabric Lap Details
                                                                                                                                                                                                                            or
                                                                                                                                                                                            200 x 200 Squares                              200 x 100 Edge Square
                                                                                                Edge Beam
                                                                                                Footing
                                              Bulk Pier                                                                                    Note :- Where external beams are wider than 300 mm, an extra equivalent bottom reinforcement bar
                                                                                                                                           is required for each 100 mm additional width. For example, a 400 mm wide edge beam will require a
                                       Suitable Founding Material
                                                                                                 Refer page 1                              minimum of 4 bar trench mesh (300 mm wide).
                                                                                                 of this report

                         1.0 m Min.                                  1.0 m Min.                                                            Concrete Specifications
                                              2.5 m Max.                                                                                   The concrete must have a strength at 28 days of not less than 20MPa unless otherwise specified on the foundation cross section, a 20 mm nominal
                                                                                                                                           aggregate size and have a nominal 80 -100 mm slump. Water must not be added to the mix to increase the slump to a value in excess of that specified.
                                                   Section                                                                                 Concrete must be placed and compacted/vibrated with good building practice. In hot and windy conditions concrete must be cured by covering with
                                                                                                                                           plastic sheeting, spraying with a liquid membrane curing compound or ponding water on the top surface. The concrete must be manufactured to
                                                                                                                                           comply with AS3600 - Concrete Structures.


                                                                                                                                           Shallow Rock, Boulders & Rock Outcrops
                                                                                                                                           The depth of strip footings may be reduced where refusal on shallow rock, on a boulder or partially over a small rock outcrop is encountered.
                                                                                                                                           Where this is less than 400 mm, top steel, corner bars and starter bars may be deleted. However before the beam depth becomes less than
                                                                                                                                           400 mm, top steel is to be lapped 500 mm with the bottom steel. It is also required that a minimum edge beam depth of 200 mm be maintained
                                                                                                                                           at all times. It is also recommended that the external walls are articulated at the start and end of the rock outcrop.




           STA CONSULTING ENGINEERS
       Brisbane North (Milton) (07) 3071 7444 Brisbane South (Rocklea) (07) 3071 7444 Gold Coast (07) 5522 1995 Mackay (07) 4960 4800
                                                                                                                                        Client
                                                                                                                                        DJK Electrical Services
                                                                                                                                                                                                                                      Site Address
                                                                                                                                                                                                                                      Lot 497 10 HILL STREET SUNSHINE BEACH
                                Townsville (07) 4766 8741 Rockhampton (07) 4994 9810 Newcastle (02) 4032 6450                           TBA SUNSHINE BEACH 4567                                                                       4567
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                                     email: [email protected] webpage: www.staconsulting.com.au
                                                                                                                                                                                                                                 STDCON 2014-14-05