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RFI - S25-054 Revised Concept Issue 18.06.2025 updated
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FOR CONCRETE USING NORMAL PORTLAND CEMENT AS3972 - TYPES A OR D WITHOUT
CONCRETE CONTINUED C20
ADMIXTURES, STRIPPING STAGES SHALL CONFORM TO THE MINIMUM STRIPPING TIMES FOR THE
C30 A VAPOUR BARRIER OF 0.2mm (200um) MINIMUM THICK POLYTHENE SHEETING SHALL BE
APPROPRIATE EFFECTIVE SPANS AND TEMPERATURES GIVEN IN THE FOLLOWING TABLE:
PLACED BENEATH SLABS ON GROUND UNLESS NOTED OTHERWISE.
C3 CONCRETE TO HAVE A MAXIMUM AGGREGATE SIZE OF 20mm WITH 80mm MAXIMUM SLUMP, A
WATER/CEMENT RATIO OF NOT GREATER THAN 0.65 AND A MAXIMUM FINAL BASIC DRYING MEMBER
SHRINKAGE STRAIN OF 800 x 10 , UNLESS APPROVED OTHERWISE. MEMBER MEMBER MINIMUM STRIPPING TIME (DAYS) FOR
C4 NO ADDITIVES SHALL BE ADDED OF APPLIED TO THE CONCRETE MIX WITHOUT THE APPROVAL OF
TYPE SPAN (m) AVERAGE AIR
TEMP. DURING PERIOD PRIOR
CONCRETE SHRINKAGE CRACKING
THE ENGINEER. TO STRIPPING TO REDUCE THE OCCURRENCE OF SHRINKAGE CRACKING IN CONCRETE SLABS, THE FOLLOWING
21°C+ 10-21°C 5-10°C GUIDELINES SHOULD BE FOLLOWED:
C5 THE MAXIMUM PERMISSIBLE TRANSPORT TIME FOR CONCRETE BETWEEN BATCHING AND
BE IN
PLACEMENT ON SITE SHALL BE IN ACCORDANCE
ACCORDANCE WITH THE FOLLOWING TABLE. 2 2 5
WALL CS1 SLABS ON GROUND SHOULD BE POURED ON POLYTHENE SHEETING OVER A SMOOTH SUB-BASE.
AMBIENT AIR MAX. BATCHING TO PLACEMENT TIME VERTICAL AND COLUMN
TEMPERATURE UNLOADED BEAM SIDE CS2 WATER MUST NOT BE ADDED TO THE CONCRETE MIX AFTER IT LEAVES THE BATCHING PLANT
UNLESS ORDERED BY THE SUPPLIER.
10° - 24°C 120 MINUTES 5 6 7
WALL, COLUMN OR
25° - 27°C 90 MINUTES VERTICAL LOAD-BEARING CS3 PLACE CONCRETE AS SOON AS POSSIBLE.
28° - 30°C 60 MINUTES AND LOADED STRUCTURE
CS4 ADEQUATELY COMPACT THE CONCRETE, PARTICULARLY AROUND CORNERS, PENETRATIONS AND
31° - 33°C 45 MINUTES INSERTS.
HORIZONTAL SLAB UNDER 3 7 10 14
34° - 36°C 30 MINUTES
3-6 10 14 21
37°C+ NO PLACEMENT OF CONCRETE UNLESS CS5 CLOSE ANY EARLY CRACKING BY RE-COMPACTING THE CONCRETE OR RE-TROWELLING THE
OVER 6 14 21 28 SURFACE.
CHILLED WATER OR ICE IN MIX
HORIZONTAL BEAM UNDER 3 10 14 21
ALL CONCRETE
CONCRETE SHALL
SHALL BE
BE MECHANICALLY
MECHANICALLY VIBRATED.
VIBRATED. VIBRATORS
VIBRATORS SHALL
SHALL NOT
NOT BE
BE USED
USED TO
TO SPREAD
SPREAD CS6 IN WINDY CONDITIONS ERECT WIND BREAKS OR WALLS.
C6 ALL 3-6 14 21 28
CONCRETE.
OVER 6 21 28 28 CS7 APPLY ALIPHATIC ALCOHOL IMMEDIATELY AFTER SCREEDING AND BULL FLOATING.
C7 ALL CONCRETE SHALL BE SAMPLED AND TESTED IN ACCORDANCE WITH AS1379 ADOPTING THE NOTE: THIS
NOTE: THIS TABLE
TABLE IS BASED ON
IS BASED
BASED ON SUPERIMPOSED
ON SUPERIMPOSED CONSTRUCTION
SUPERIMPOSED CONSTRUCTION LOADS
CONSTRUCTION LOADS NOT
NOT EXCEEDING
EXCEEDING 1.0kPa.
1.0kPa.
CS8 RE-APPLY ALIPHATIC ALCOHOL TO SURFACES AFTER EACH FINISHING OPERATION.
PROJECT ASSESSMENT METHOD FOR COMPRESSIVE STRENGTH AND SLUMP COMPLIANCE. THE
RESULTS OF ALL TESTS SHALL BE PROMPTLY SUBMITTED TO THE ENGINEER FOR REVIEW. C21 REINFORCEMENT IS REPRESENTED DIAGRAMMATICALLY AND NOT NECESSARILY SHOWN IN TRUE CS9 ONCE THE SLAB IS FINISHED, CONTINUOUSLY CURE FOR 7 DAYS VIA WATER PONDING,
PROJECTION OR SCALE. IMPERVIOUS SHEETS OVER THE SLAB OR MEMBRANE FORMING CURING COMPOUNDS APPLIED IN
C8 WHEN THE AIR TEMPERATURE EXCEEDS 30°C, ALIPHATIC ALCOHOL SHALL BE APPLIED TO THE
ACCORDANCE WITH THE MANUFACTURERS SPECIFICATION.
CONCRETE SURFACE OF SLABS IMMEDIATELY AFTER THE INITIAL SCREED AND AGAIN AFTER BULL C22 ALL REINFORCEMENT SHALL BE SECURELY SUPPORTED IN ITS CORRECT POSITION ON PLASTIC BAR
FLOATING. CHAIRS, GENERALLY AT NOT GREATER THAN 800mm CENTRES IN BOTH DIRECTIONS. CS10 STRUCTURAL ENGINEER IS TO BE NOTIFIED BY THE CLIENT, ARCHITECT OR BUILDER, OF ANY
SPECIAL SHRINKAGE REQUIREMENTS FOR EXPOSED CONCRETE ELEMENTS PRIOR TO
C9 CURING OF ALL CONCRETE SURFACES SHALL COMMENCE IMMEDIATELY AFTER COMPLETING C23 WELDING AND HEATING OF REINFORCEMENT SHALL NOT BE PERMITTED WITHOUT APPROVAL OF THE CONSTRUCTION.
CONCRETE FINISHING AND SHALL CONTINUE FOR 7 DAYS. CONTRACTOR TO CONFIRM METHOD OF ENGINEER.
CURING WITH ENGINEER PRIOR TO USE.
CS11 WHERE BRITTLE FLOOR COVERINGS SUCH AS CERAMIC TILES ARE BEING USED, ADDITIONAL SLAB
C24 ALL STEEL REINFORCEMENT IN CONCRETE ELEMENTS SHALL BE INSPECTED BY THE ENGINEER AND REINFORCEMENT SHOULD BE ADDED TO THE SPECIFIED MINIMUM REINFORCEMENT. IF NO EXTRA
C10 SIZES OF CONCRETE ELEMENTS DO NOT INCLUDE THICKNESS OF APPLIED FINISHES. PASSED PRIOR TO POURING OF ANY CONCRETE. REINFORCEMENT IS ADDED, COVERING SHOULD BE DELAYED UNTIL 90 DAYS AFTER THE SLAB HAS
BEEN PLACED.
C11 BEAM DEPTHS ARE WRITTEN FIRST AND INCLUDE SLAB THICKNESS, IF ANY. C25 LAP REINFORCEMENT ONLY AT LOCATIONS SHOWN ON THE DRAWINGS OR AS APPROVED BY THE
ENGINEER. CS12 ALL SHRINKAGE CRACKS ARE TO BE TREATED WITH A LOW VISCOSITY ACRYLIC POLYMER
C12 CONSTRUCTION JOINTS SHALL BE PROPERLY FORMED AND USED ONLY WHERE SHOWN OR
SPECIFICALLY DESIGNED TO PENETRATE, REPAIR AND SEAL MOVING CRACKS SUCH AS 3M
APPROVED BY THE ENGINEER. C26 SLAB FABRIC SHALL BE LAPPED ONE FULL PANEL OF FABRIC PLUS 50mm SO THAT THE TWO CP&R 5742 OR APPROVED EQUIVALENT.
OUTERMOST TRANSVERSE WIRES OF ONE SHEET OVERLAP THE TWO OUTERMOST TRANSVERSE
C13 NO HOLES, CHASES OR EMBEDDED ITEMS OTHER THAN THOSE SHOWN ON THE STRUCTURAL WIRES OF THE SHEET BEING LAPPED BY 50mm.
DRAWINGS SHALL BE MADE IN CONCRETE MEMBERS WITHOUT PRIOR APPROVAL OF THE
ENGINEER. CONDUITS, PIPES ETC. SHALL NOT BE PLACED IN THE COVER THICKNESS OF THE
CONCRETE. BAR REINFORCEMENT SHALL BE LAPPED IN ACCORDANCE WITH THE FOLLOWING TABLE.
PC1 POLISHED/HONED CONCRETE SLABS
C27
WHERE POLISHED/HONED CONCRETE SLABS ARE REQUIRED, THE SLAB SHALL COMPLY WITH THE
C14 WHERE SERVICE PIPES PENETRATE CONCRETE ELEMENTS, PROVISION SHOULD BE MADE TO TYPICAL BAR REINFORCEMENT LAP LENGTHS
PC2 FOLLOWING:
ALLOW FOR MOVEMENT OF THE ELEMENT.
BAR LAP LENGTH UNO HORIZONTAL BARS WITH GREATER
THAN 300mm OF CONCRETE CAST BELOW THEM CONCRETE TO HAVE A MINIMUM STRENGTH GRADE OF S32 WITH A MAX SHRINKAGE STRAIN OF
C15 FORMWORK SHALL BE DESIGNED, CONSTRUCTED AND STRIPPED IN ACCORDANCE WITH AS3610
PC3 650 x10 AND A MAX WATER/CEMENT RATIO OF 0.45, UNO
FORMWORK CODE, UNLESS NOTED OTHERWISE ON THE DRAWINGS. N12 550 750
N16 800 1100 SLABS ON GROUND TO BE A MINIMUM OF 130mm THICK, REINFORCED WITH SL81 FABRIC WITH 30mm
C16 STRIPPING OF FORMWORK AND REPROPPING OF SUSPENDED SLABS AND BEAMS SHALL BE
N20 1100 1400 TOP COVER, UNO.
CARRIED OUT PROGRESSIVELY SO THAT AT NO STAGE IS THE SLAB OR BEAM UNSUPPORTED
UNTIL IT IS PERMITTED TO FULLY REMOVE ALL PROPPING. N24 1250 1600 FOLLOW CCAA GUIDELINES FOR CONCRETE SHRINKAGE CRACKING AND POLISHED CONCRETE
N28 1400 1800 FLOORS
C17 IN MULTISTORY CONSTRUCTION, PROPS SHALL BE LOCATED IN THE SAME POSITION ON EACH
N32 1600 2100
FLOOR SO THAT THEY WILL BE CONTINUOUS IN THEIR SUPPORT FROM FLOOR TO FLOOR. WHERE
THE NUMBER OF PROPS ON A FLOOR IS REDUCED, THE REMAINING PROPS SHALL BE LOCATED N36 2000 2500
DIRECTLY UNDER PROPS ON THE FLOOR ABOVE. WHERE LAPS ARE SHOWN ON THE DRAWINGS THE ABOVE LAP LENGTHS SHALL BE ADOPTED
WHERE LAPS ARE SHOWN ON THE DRAWINGS THE ABOVE LAP LENGTHS SHALL BE ADOPTED UNLESS
UNLESS
NOTED OTHERWISE. WHERE BARS OF DIFFERENT DIAMETER ARE SHOWN LAPPED, ADOPT THE LAP
C18 PROPPING TO SUSPENDED SLABS AND BEAMS SHALL NOT BE REMOVED UNTIL THE CONCRETE LENGTH APPROPRIATE TO THE SMALLER DIAMETER BAR.
HAS ACQUIRED SUFFICIENT STRENGTH TO SUPPORT SAFELY ITS OWN WEIGHT AND ANY
SUPERIMPOSED LOAD WITHOUT DAMAGE OR UNACCEPTABLE DEFLECTION. C28 A LEVELING SAND LAYER (50mm MINIMUM IN THICKNESS) SHALL BE PLACED UNDER SLABS ON
GROUND UNO. THE SAND SHALL BE SALT FREE AND COMPACTED TO 65% DENSITY INDEX.
C19 NO MASONRY WALLS OR SIMILAR PERMANENT LOADINGS SHALL BE ERECTED ON ANY PART OF
THE STRUCTURE WHILE THE PART IS STILL SUPPORTED BY PROPS. C29 A VAPOUR BARRIER OF 0.2mm (200um) MINIMUM THICK POLYTHENE SHEETING SHALL BE PLACED
BENEATH SLABS ON GROUND UNLESS NOTED OTHERWISE.
C1 ##.##.#### REVISION NAME BRISBANE
DESIGNED: APPROVED:
T: 07 3852 4333 CONSULTANTS: PROJECT: PROPOSED RESIDENTIAL DEVELOPMENT PROJECT NUMBER
CONSULTANTS NAME S24-###
WE S TE R A
GOLD COAST
DRAWN:
T: 07 5571 1599 LOCATION: PROJECT LOCATION
SUNSHINE COAST
SHEET NUMBER
CHECKED:
PART NE RS T: 07 5391 3777
NORTHERN NSW
USE FIGURED DIMENSIONS ONLY. DO NOT SCALE, IF A DISCREPANCY ARISES CHECK WITH THE
PROJECT ENGINEER AND/OR SUPERVISING AUTHORITY. DO NOT WORK FROM REDUCED SCALE
TITLE: CONSTRUCTION NOTES - SHEET 3
1.2
.
DATE: STRUCTURAL+CIVIL+ENVIRONMENTAL ENGINEERS DRAWINGS (A1-A3 SIZE PAPER). COPYRIGHT OF ALL DRAWINGS & WORKS EXECUTED FROM
T: 02 6674 8047 THEM IS VESTED IN WESTERA PARTNERS AND USE OF THERE FORE WITHOUT PERMISSION IS
CENTRAL VICTORIA
CLIENT NAME ##
STRICTLY PROHIBITED! IT IS THE BUILDERS RESPONSIBILITY TO ENSURE ALL WORKS ARE
PAGE SIZE: A3 For and on behalf of www.westerapartners.com.au ABN 52 097 417 975
CARRIED OUT WITHCARE AND DUE DILIGENCE TO COMPLY WITH THE CONTRACT DOCUMENTS. CLIENT: REVISION
No. DATE REVISIONS DRN ENG WESTERA PARTNERS PTY. LTD. T: 03 5441 0922
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