01.2 - Engineering Design (issue 2) · OPW18/0008

 

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GENERAL NOTES:

1.0 These drawings shall be read in conjunction with HR Design Group specification ond
certification, all architectural and other consultants drawings and specifications.
Any discrepancies shall be referred to the architect or project manager for o
decision before proceeding with the work.

1 Dimensions SHALL NOT be obtained by scaling off the drawings.
1.2 All dimensions shall be checked by Builder prior to commencement of works.

1.3 Prior to the commencement of construction the Builder shall check and
co-ordinate with the Architect and other consultants all steps, falls, rebates,
setdowns, chases and penetrations. Any discrepancies with our drawings shall
be referred to us for clarification and/or revision. Under no circumstances
shall the Builder proceed with the works until all discrepancies have been
satisfactorily resolved.

1.4 All workmanship and materials shall be in accordance with the relevant Australian
Standards, the BCA and local council regulations.

1.5 The contractor shall be responsible for the maintaining the structure and adjacent
structures in a stable condition, ensuring no port is overstressed during the works.

SAFETY RISK & HAZARDS

2.0 It is essential that an adequate safety plan is prepared by the contractor for the
works. HR Design Group may not be aware of all safety risks and hazards involved
in this project and the absence of comment does not imply that there are no
risks or hazards.

3 — LOADINGS:
3.0 The structural work as shown on these drawings has been designed for the following
cases :

i) General floor live load of 1.5 kPa uniform distributed load
i!) General floor live load of 1.8 kN point load
ii) Balcony and stair floor live load of 2.0 kPa uniform distributed load

3.1 Load combinations have been calculated in accordance with AS1170.1 requirements.

FOUNDATIONS:

4.0 Refer to the attached soil report for reference to the required founding material
for the footings and soil profile for the site.

4.1 The founding material and steel reinforcement to the footings and slab shall be
inspected by the Engineer prior to the pouring of concrete. 24 hours notice is
required for inspection.

4.2 The Engineer shall be notified immediately should foundation material differ from
that stated in the soils report.

4.3 Topsoil containing plant roots and any organic material shall be removed from the
area prior to filing and compaction.

4.4 For sites where cut and fill is required, the fil shall continue post the edge of the
building at least 1 metre ond shall be retained or battered beyond this point by a
slope not steeper than 2 horizontal to one vertical. The interior of the slab shall be
founded on compacted material and the edge beams shall be founded on natural soil
or controlled fill (refer soil report).

4.5 The ground around the slab is to be well drained at all times by placing a gravel
drain around the perimeter or by sloping the soil (1:10 maximum) away from the
slab area, Ponding of water around the slab area is to be prevented during ond after
onstruction of the slab. All water is to be drained to either the sireet frontage or
to existing or new field drainage pits connected to a stormwater line. Spoon drains
are to be located at top and bottom of all batters.

4.6 Edge footings shall be founded on material with on allowable bearing pressure not
less than 100 kPa, The slab shall be founded in material with an allowable bearing
pressure not less than 50 kPo.

4.7 Excavation adjacent to existing footings shall not extend below the underside of
existing footings unless instruction is obtained from the engineer.

4.8 — Notwithstanding that existing services may or may not be shown on these drawings,
no responsibility is taken by the engineer for this information which has been
supplied by others. The contractor shall asertain the position of all underground
services prior to excavation.

 

LAP SCHEDULE:
MINIMUM REINFORCEMENT LAP FOR SLAB

SWE

FABRIC
N12
N16
N20

LENGTH

  

 

 

 

NOTES:

 

1. Do not scale drawings.
2. Check and verify all dimensions

prior to commencement of work.

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REINFORCED CONCRETE:

All work shall be in accordance with all current Australian Standards as a MINIMUM
work standard.

Concrete shall have a characteristic compressive strength after 28 days of not less
than that listed below for the various concrete elements UNO.:

i) FOOTINGS - 25 MPa

il) INTERIOR GROUND SLABS = - 25 MPa

il) EXTERIOR GROUND SLABS - 32 MPa

iv) BLOCKWORK CORE FILL — 20 MPa

v) SUSPENDED SLABS — 40 MPa

Minimum clear cover to reinforcing bar shall be in accordance with the following table. However
cover to reinforcing noted on the plans shall take precedence over those stated in the table.
i) FOOTINGS — 50mm TO ALL SIDES
ii) INTERIOR GROUND SLABS = — 30mm TOP & BOTTOM
iil) EXTERIOR GROUND SLABS - 45mm TOP & BOTTOM

All concrete shall be mechanically vibrated. Vibrator shall not be used to spread
concrete.

All conerete surfaces shall be cured using an approved method for seven (7) days
immediately after concrete is hard. Confirm method of curing with Engineer prior to
use. Following concrete placement and as required during the finishing process,
aliphatic alcohol or approved curing compound shall be applied to exposed surfaces
to limit moisture loss from the fresh concrete.

Sizes of concrete elements do not include thickness of applied finishes.
Construction joints where not shown shall be located to the Engineer's approval.

No holes, chases, blockouts, ducts or embedment of pipes other than those shown
on the structural drawings shall be made in concrete members without prior approval
of the Engineer.

No additives shall be added or applied to the concrete mix without the opproval of
the Engineer.

All steel reinforcement in concrete elements shall be inspected by the Engineer and
passed prior to pouring of any concrete

All reinforcement shall be supported on plastic chairs, generally at not greater than
800mm centres in both directions. Bars shall be tied at alternate intersections.
Conduits, pipes etc ... shall not be placed in the cover of the concrete.

All reinforcement shall comply with the requirements of the relevant Australian
Standards.

Concrete to have a maximum aggregate size of 20mm with 80mm maximum slump
and a water/cement ratio of not greater than 0.65.

The maximum permissible transport time for concrete between batching and placement
on site shall be in accordance with the following table.

 

 

 

AMBIENT AIR MAX. BATCHING TO
TEMPERATURE PLACEMENT TIME.

10° - 24°C 120 minutes

25° - 27C 90 minutes

28° - 30°C 60 minutes

3 - 33C 45 minutes

uM - 36C 30 minutes

37 C+ No placement of concrete
unless chilled water or ice in mix

 

 

 

A leveling sand layer (50mm minimum in thickness) shall be placed under slab on
ground. The sand shall be salt free and compacted to 65% Density Index.

‘A vapour borrier (200m thick polythene sheet) shall be placed beneath the slab on
ground so that the ground surface under the slab and thickenings is entirely covered in
accordance with AS3610 ond AS2870.

Slab fabric shall be lapped one full panel of fabric plus 25mm so that the two
outermost transverse wires of one sheet overlap the two outermost transverse wires of
the sheet being lopped by 25mm.

Where brittle floor coverings such as ceramic tile shall be used, an additional layer of
SL62 Mesh shall be added to the existing slab reinforcement. If no extra reinforcement
is added covering should be delayed until 90 days after the slab has been placed.

Where service pipes penetrate the floor and or walls provision should be made for
movement of the floor/walls.

All concrete shall be sampled ond tested in accordance with AS 3600 adopting project
assessment method for compressive strength and slump compliance, The results of al
tests shall be promptly submitted to the Engineer for review.

Diagonal reinforcement shall be placed at all re~entrant corners. 2/N12 or 3-L11TM
1500mm Min. long. Typical.

The edge rebate shall be flashed and drained by weep holes at not more than 1m
spacing. Weep holes shall be located above the finished ground level any
portion of a deepened rebate that cannot be drained shall be mortar filled.

Approved steel reinforcement systems may be used in lieu of that stated on our plans
(eg. Aquilo steel "L” cage, Neumans F652 fabric etc ... ), provided the overall size of
the footings and ground slab as detailed by us remains the some.

All props and formwork under suspended concrete shall be removed before construction
of brickwork or blockwork above UNO.

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STRUCTURAL STEEL:

All steelwork shall be constructed in accordance with code of practice AS4100 Steel Structures
Code, AS1554, AS1163, AS3679, AS4600 and all other codes of practice referred to therein.

Steel quality shall conform with the following Australian Standards UNO:
— Steel Plates & Sections AS3679 Grade 300

— Rectangular Hollow Sections AS1163 Grade C350 LO

— Circular Hollow Sections AS1163 Grade C350

— Square Hollow Sections AS1163 Grade C350

— Purlins/Girts AS1397 Grade G450 2350

Unless noted otherwise all welds shall be 6mm continuous fillet E41XX electrode,
all bolts M16 4.6/5, all plates 10mm thick.

Unless noted otherwise, bolt holes shall be 2mm greater than specified bolt size.

The steelwork sub—contractor’s shop drawings shall be submitted to the Engineer for
review before fabrication commences.

Fabricator to check all dimensions on site with contractor.

Internal steelwork shall be blast cleaned to class 1 and coated with minimum 100um high
build Alkyd primer before erection. External steelwork shall be blast cleaned to class 2.5
‘and hot dipped galvanised to AS4680 with a coating mass of 600g/m2 (average).

The structural steel framework and bracing members shown on the plans ore those
required in the design for the completed structure only and the contractor shall be
responsible for providing any necessary temporary connections, supports and bracing
during the erection process to maintain the stability and safety of the steelwork
throughout construction.

Encased steelwork shall not be painted and shall be wrapped with F41 fabric, 50 cover.

The steel fabricator shall provide all bolts necessary for the erection of the steelwork
cond bolt holes and cleats necessory for the erection of timber works as shown, noted
cr implied on these drawings or architects drawings and specification.

The roof structure has been designed for normal roof loads only and does not allow
for any extraneous loads such as hoists, monorails etc ... except where shown on
drawings.

When shop splices are necessary in beams, the position of the splice shall be
opproved by the Engineer.

Provide protective coating on all steelwork partially embedded in concrete UNO. The
coating should be non-conductive and extend o minimum of 200mm into the concrete
in accordance with AS2312-2002 and a minimum of 100mm above the concrete.

MASONRY BLOCKWORK é& BRICKWORK:

Materials and workmanship shall comply with the requirements of AS3700 and AS2733
as a minimum standard.

All masonry blocks shall have a min unconfined compressive strength of 15 Mpa. All
loadbearing bricks shall have a min unconfined compressive strength of 10 Mpa

Mortar shall have the following mix proportions, 1 part cement : 0.5 part lime :
clean sand. Sond shall be clean, well graded and free of silt ond clay.

4.5 parts

Provide medium duty galvanised wall ties at 600mm crs. vertically & horizontally.
Embedment of ties in the mortar joint shall be a minimum of 50mm into each leaf.
Stainless steel ties shall be used in locations < 1 km from the coast.

Hollow blocks to be filled with concrete shall have cleanout blocks laid at the base
course.

Additives shall not be added to the grout or mortar without the specific permission of
the Engineer.

All mortar dags and protrusions into the block or brick cores shall be removed prior
to the placement of any concrete into the cavities. Loose material and debris shall be
also removed from the base of the masonry cores.

Fully bed solid units, face bed hollow units and fully fil vertical joints. No raking of
mortar joints is permitted.

Grouting shall not commence until the mortor joints have gained sufficient strength to
resist blowout and grout spaces have been cleaned out. Compaction of concrete shall
be by vibrator or by rodding with rod not less thon 24mm diameter. Moximum

6 course height to be filled and compacted in one pass.

The concrete used to fil the masonry cores shall have a compressive strength of not
less than 20 MPa ofter 28 days. The concrete shall have a maximum aggregate size of 3
10mm and a maximum slump of 23030mm and a minimum cement content of 300kg/m

All cores with reinforcement bars shall be filled with concrete, unless noted otherwise.
Where masonry blockwork is acting os a retaining structure then all cores shall be
filed with concrete.

Reinforcement shall be placed accurately ond tied securely before placement of concrete.

Unless noted otherwise vertical control joints shall be provided in blockwork at 12m crs.
nd at 6m from corners, and in brickwork at 5.0m crs and at 2.0m to 4.5m from comers.
Joints to be a minimum of 10mm wide and in accordance with Cement Concrete &
‘Aggregates Australia Technical Note TN61

No holes or chases shall be cut into blockwork/brickwork without prior approval of
the Engineer.

Bricks shall exhibit a max. 5 year expansion of 1.0mm/m or less, and the brick
supplier shall provide a recent test certificate confirming the above.

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MASONRY BLOCKWORK & BRICKWORK (CONT.):

All wall intersections shall be of bonded construction or tied with medium duty ties at
400mm max. crs.

Moximum height of core-filing :—
140mm wide blockwork — 1.8m max
190mm wide blockwork - 3.4m max

TIMBER FRAMING:

The timber roof and floor framing layouts shown on these engineering drawings form
the basis for the design of the structural support elements and the footings
Alternative roof and floor framing layouts will only be permitted with the written
approval of the structural Engineer.

All timber roof, wall and floor structural members that are designed by the
Contractor shall be designed in accordance with Engineering principles, AS1684 and
AS 1720.1 and shall be handled, erected, installed and braced in accordance with
AS 1860 ond AS 4440.

At the time of the frome inspection, the Contractor shall provide all engineering
design, checking and inspection certification required by the statutory authority, duly
signed by a Registered Professional Engineer of Queensland (RPEQ), for all of the timber
roof, wall and floor structural members that have been designed by the Contractor.

In addition, the Contractor shall inspect and certify that the roof wall and floor
framing that are designed by the Contractor, have been constructed in accordance
with their design.

Except where otherwise shown on these Engineering drawings, all timber connection,
tiedown and bracing details shall comply with AS 1684 and AS 1720.1.

Al timber members used in the construction shall have o minimum level of durability
as specified in AS 1604.2 Appendix C.

The Contractor shall provide protection of the construction against termite attack in
accordance with NCC and AS 3660.1 and QMBA technical circular T -01-02/2001.
The Contractor shall provide certification of treatment.

COMPACTION OF FILL:

Craweer plant track rolling is usually inadequate for compacting fil to approved
standards and if fil compaction is not of a suitable standard, then footings and the
slab ore to be supported on bored piers.

After the site has been stripped of all topsoi, organic material and debris, proof
rolling with o vibrating roller of 5 to 10 tonne capacity shall be carried out. If
neighbouring structures ore likely to be affected by vibration of the roller, a static
sheepsfoot roller may be used in clay soils by reducing the depth of fill layers to
150mm,

Soft spots under rolling should be excavated and filled, then rerolled.

Controlled fill is material that has been satisfactorily compacted to provide adequate
strength without excessive settlement.

Compaction requirements for fill material is as follows :-

i) Sand fill up to 800mm deep is to be compacted in 200mm layers by a
vibrating plate or vibrating roller. The fil is to have an n value of 7 using a
standard penetrometer test. Density index is to be not less than 75% in
accordance with AS 1289,

il) Non-sand fill up to 450mm deep shall be compacted in not more than 150mm
layers by a mechanical roller, cloy fill shall be moist during compaction.
Standard compaction index is not to be less than 95% in accordance with
AS 1289.

Testing of density index shall be done in accordance with Australian standard AS 1288.

Reactive clay should be avoided as fill but if used should be placed at a moisture
content which approximates the fixed equilibrium moisture content.

UNCONTROLLED SHRINKAGE CRACKING:

To minimise uncontrolled shrinkage cracking the following procedures should be strictly
adhered to;

Under no circumstances shall any water be added to the concrete truck after it leaves
the batching plant.

Slabs on ground shall be poured over a vapour barrier or compacted road base gravel
as detailed on the drawings.

The concrete shall be vibrated during placement.

Niiphatic alcohol or approved curing compound shall be applied to the surface of the
concrete immediately after the initial screed ond again immediately after the bull floating.

The surface of the newly placed concrete shall be protected from excessive wind by
erecting a wind barrier such os hessian fencing when required.

Once the slab is finished it shall be continuously cured for 7 days by either keeping
continuously wet or covering with weighted down plastic or approved equivalent method
such as application of a curing compound.

When early signs of plastic settlement cracks are visible, re—compact or re—trowel
the concrete surface.

Where polished concrete finishes are specified, concrete to be 40MPa minimum with
‘SL81 mesh UNO.

 

 

REVISION

 

 

 

Issue|Made By} Date DESCRIPTION

0 BDK | 16/11/17] Preliminary Issue — Not for Construction
1 BDK | 04/12/17] Preliminary Issue — Not for Construction
2 BDK | 11/12/17] Preliminary Issue — Not for Construction

PROPOSED NEW RESIDENCE at

LOT 120 CNR SEAMOUNT QUAY & MERMAID QUAY, NOOSAVILLE

BUILDER: RYAN DESIGNER HOMES

 

Designed By : J. SWEET BEng (Civil) (hons)

Drawn By: BDK

 

 

 

 

 

 

 

Certified By : B.R. CROMAR Beng (Civil) MIEAust CPEng RPEQ NER

 

 

 

CONSULTING STRUCTURAL & CIVIL ENGINEERS
Suite 8/137 Brisbane Road, Mooloolaba

Sippy Downs, QLD. 4556

Office:
Postal: P.O. Box 7117
i Ph: (07) 5444 5578
Date: 16/1/17 Crear Waripg Concting races Pyke T™A | Wey: hrdesigngroup.com.au
Date: 16/11/17 Email:

[email protected]

N.T.S.

Scale :

 

Job No.: 17-0417

Dwg No.: SO1
GENERAL NOTES

 

 

 

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