Review of Environmental Factors - Camden Valley Way Upgrade and Liz Kernohan Drive Extension (Final) - Flipbook - Page 97
REINFORCEMENT CONT'
CONCRETE NOTES CONT:
FOUNDATIONS
R5.
COVER TO REINFORCEMENT - CLEAR COVER TO ALL REINFORCEMENT FOR
DURABILITY SHALL BE AS INDICATED IN THE CONCRETE NOTES.
COVER SHALL NOT BE LESS THAN THE SIZE OF THE AGGREGATE OR THE MAIN
BAR. PIPES OR CONDUITS SHALL NOT BE PLACED WITHIN THE COVER TO
REINFORCEMENT.
FOOTINGS HAVE BEEN DESIGNED FOR AN ALLOWABLE
BEARING INTENSITY OF 150kPa kPa ON NATURAL IN-SITU MATERIAL.
C9.
SIZES OF CONCRETE ELEMENTS DO NOT INCLUDE THICKNESS OF APPLIED
FINISHES.
IF A GEOTECHNICAL INVESTIGATION HAS NOT BEEN MADE, THE FOUNDATION
CONDITIONS AND REACTIVITY CLASS ARE AN ASSUMPTION AND MUST BE
CONFIRMED BY TRIAL EXCAVATIONS BY THE BUILDER.
C10.
NO HOLES, CHASES OR EMBEDMENT OF PIPES OTHER THAN THOSE SHOWN ON
THE STRUCTURAL DRAWINGS SHALL BE MADE IN CONCRETE MEMBERS WITHOUT
PRIOR APPROVAL OF THE ENGINEER.
FOUNDATION MATERIAL SHALL BE APPROVED FOR THIS BEARING PRESSURE
BEFORE PLACING MEMBRANE, REINFORCEMENT OR CONCRETE.
C11.
CONSTRUCTION JOINTS SHALL BE PROPERLY FORMED AND USE ONLY WHERE
SHOWN OR SPECIFICALLY APPROVED BY THE ENGINEER.
F3.
BEARING MATERIAL AT BASES OF PIERS TO BE CONFIRMED BY AN EXPERIENCED
GEOTECHNICAL ENGINEER OR ENGINEERING GEOLOGIST PRIOR TO POURING
CONCRETE.
C12.
ALL CONCRETE COLUMNS ARE TO BE POURED A MINIMUM OF 4 HOURS PRIOR TO
SLAB OR BEAM OVER.
R6.
F4.
EXCAVATION NEAR FOOTINGS SHALL NOT EXTEND BELOW FOUNDATION LEVEL
WITHOUT THE ENGINEERS APPROVAL.
C13.
DRIP GROOVES ARE TO BE PROVIDED AT ALL EXPOSED EDGES. COVER TO
REINFORCEMENT IS TO BE MAINTAINED.
WELDING OF REINFORCEMENT SHALL NOT BE PERMITTED WITHOUT THE
APPROVAL OF THE ENGINEER.
R7.
F5.
ALL FOOTINGS SHALL BE LOCATED CENTRALLY UNDER WALLS AND COLUMNS
UNLESS NOTED OTHERWISE
C14.
CONDUITS, PIPES AND THE LIKE SHALL NOT BE PLACED WITHIN THE CONCRETE
COVER.
PROVIDE DISTRIBUTION REINFORCEMENT OR TIE BARS IF NOT SHOWN. WHERE
NECESSARY PROVIDE N12-400 CENTRES (SPLICE 450)
R8.
F6.
DO NOT BACKFILL RETAINING WALLS (OTHER THAN CANTILEVER WALLS) UNTIL
FLOOR CONSTRUCTION AT TOP AND BOTTOM IS COMPLETED.
C15.
ALL CONCRETE (INCLUDING FOOTINGS AND SLABS ON GROUND) SHALL BE
MECHANICALLY VIBRATED TO ACHIEVE FULL COMPACTION.
SITE BENDING OF N BARS SHALL BE DONE COLD WITH POWER OR MECHANICAL
BENDING TOOLS AND A MANDREL OR FORMER WITH A BAR DIAMETER OF 5
TIMES THE BAR SIZE. NOTE: IF N BARS ARE HEATED ABOVE 450°C (LESS THAN
RED HEAT) THEY LOSE STRENGTH.
C16.
SAWN CUT JOINTS ARE TO BE CUT AFTER THE CONCRETE HAS SUFFICIENTLY
HARDENED SUCH THAT WILL NOT BE DAMAGED BY THE SAWING BUT BEFORE
SHRINKAGE CRACKING CAN OCCUR.
F1.
F7.
F8.
F9.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING ANY
EXCAVATION IN A STABLE CONDITION WITHOUT ADVERSELY AFFECTING
SURROUNDING PROPERTY INCLUDING SERVICES.
THIS INCLUDES OBTAINING ALL NECESSARY APPROVALS FOR SHORING AND
ANCHOR SYSTEMS.
C17.
ANY OVER EXCAVATION SHALL BE BACKFILLED WITH CONCRETE GRADE N15.
FOUNDATIONS ADJACENT TO SERVICES ETC. SHALL BE EXTENDED DOWN SUCH
THAT THE INFLUENCE LINE OF THE FOUNDATION IS BELOW THE ADJACENT
SERVICE.
CONCRETE NOTES
C1.
C2.
ALL WORKMANSHIP AND MATERIALS SHALL COMPLY WITH
AS 3600 CURRENT EDITIONS WITH AMENDMENTS, EXCEPT WHERE VARIED BY THE
CONTRACT DOCUMENTS.
C18.
ALL CONCRETE SUPPLY SHALL COMPLY WITH AS1379.
CONCRETE PROPERTIES AND COVER TO REINFORCING SHALL BE AS FOLLOWS :
COVER
=
F'c (MPA) (28 DAYS)
=
MAX 28 DAYS SHRINKAGE
=
MAX 56 DAYS SHRINKAGE
=
MAXIMUM AGGREGATE SIZE =
SLUMP DURING PLACEMENT =
REFER TO DRAWINGS
REFER TO DRAWINGS
600 MICRO STRAIN UNO
700 MICRO STRAIN UNO
20mm UNO
80mm UNO
CURING OF ALL CONCRETE SHALL BE IN ACCORDANCE WITH AS3600 AND SHALL
COMMENCE WITHIN 2 HOURS OF FINISHING OPERATIONS. CURING SHALL BE BY
CONTINUAL SATURATION WITH PORTABLE WATER FOR 3 DAYS FOLLOWED BY
PREVENTION OF MOISTURE LOSS FOR THE NEXT 4 DAYS USING POLYTHENE
SHEETING OR WET HESSIAN PROTECTED FROM WIND OR TRAFFIC AND THEN
ALLOWING GRADUAL DRYING OUT. CURING COMPOUNDS MAY BE USED
PROVIDED THAT THEY COMPLY WITH AS3799 AND DO NOT AFFECT THE
APPLICATION OF FLOOR FINISHES. THE COMPATIBILITY OF CURING
COMPOUNDS WITH PROPOSED APPLIED FINISHES SHALL BE VERIFIED PRIOR TO
APPLICATION. CURING COMPOUNDS ARE TO BE APPLIED UNIFORMLY IN
ACCORDANCE WITH THE MANUFACTURER'S SPECIFICATION. PVA BASED CURING
COMPOUNDS ARE NOT ACCEPTABLE.
ALIPHATIC ALCOHOL:WHEN SHADE TEMPERATURE EXCEEDS 35° C SPRAY THE EXPOSED SURFACE OF
CONCRETE SLAB DURING THE PLACING AND FINISHING OPERATION WITH A FINE
FILM OF APPROVED ALIPHATIC ALCOHOL.
REPEAT THE SPRAY IF THE SPRAYED SURFACE HAS BEEN RE-WORKED.
C19.
ENSURE ADEQUATE SUPPLY OF ALIPHATIC ALCOHOL ON SITE BEFORE
COMMENCING CONCRETE WORK.
C20.
SLIP JOINTS ARE TO BE USED ON ALL LOAD BEARING MASONRY WALLS. USE TWO
LAYERS OF GALVANIZED FLAT STEEL WITH GRAPHITE GREASE BETWEEN, ON
SUPPORT REINFORCEMENT ON MILD STEEL PLASTIC TIPPED CHAIRS,
PLASTIC CHAIRS OR CONCRETE CHAIRS AT NOT GREATER THAN 1 METRE
CENTRES BOTH WAYS. IN EXPOSED CONDITIONS B2 OR C (TO AS3600)
USE ONLY PLASTIC OR CONCRETE CHAIRS.
REINFORCEMENT LAPS
R9.
LAP REINFORCEMENT ONLY AT LOCATIONS SHOWN ON THE STRUCTURAL
DRAWINGS OR AS OTHERWISE APPROVED IN WRITING BY THE STRUCTURAL
ENGINEER.
SLAB REINFORCEMENT - LAP LENGTH (mm)
CONCRETE GRADE
BAR
DIA.
25 MPa
32 MPa
40 MPa
N12
N16
N20
600
850
1100
500
750
1000
450
650
900
BEAM REINFORCEMENT - LAP LENGTH (mm)
BAR
DIA.
N12
N16
N20
N24
N28
N32
N36
< 300mm CONCRETE CAST
BELOW THE BAR
> 300mm CONCRETE CAST
BELOW THE BAR
CONCRETE GRADE
CONCRETE GRADE
25 MPa
32 MPa
40 MPa
25 MPa
32 MPa
40 MPa
600
850
1100
1400
1700
2000
2400
500
750
1000
1250
1500
1800
2100
450
650
900
1100
1350
1600
1850
750
1100
1450
1800
2200
2600
3050
650
950
1300
1600
1950
2300
2700
600
850
1150
1400
1700
2050
2400
