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GENERAL NOTES 1. CONSTRUCTION FROM THESE DRAWINGS SHALL NOT COMMENCE UNTIL THEY ARE APPROVED BY THE RELEVANT AUTHORITIES. 2. DIMENSIONS SHALL NOT BE OBTAINED FROM THE STRUCTURAL DRAWINGS BY WAY OF SCALING (OR DETERMINING UNDIMENSIONED MEASUREMENTS FROM THE ELECTRONIC DRAWING). WALL, PIER, AND COLUMN THICKNESS', AND STRUCTURAL MEMBER SIZES SHOWN ON THESE DRAWINGS SHALL TAKE PRECEDENCE OVER THOSE SHOWN ON THE ARCHITECT'S DRAWINGS. THE BUILDER SHALL VERIFY ALL DIMENSIONS ON SITE AND BE RESPONSIBLE FOR THE SETTING OUT OF THE BUILDING. 3. ELEMENTS INDICATED ON THESE DRAWINGS ARE SHOWN IN THEIR INTENDED COMPLETE STATE. THE BUILDER SHALL PROVIDE ANY TEMPORARY WORKS INCLUDING PROPPING, BRACING, SHORING AND ANY OTHER REQUIREMENTS NECESSARY TO MAINTAIN THE STRUCTURE, OR ANY PART OF IT, IN A STABLE CONDITION DURING CONSTRUCTION. IF THE BUILDER IS IN ANY DOUBT AS TO HOW TO ACHIEVE THIS, HE SHALL OBTAIN ADVICE FROM APPROPRIATELY QUALIFIED AND EXPERIENCED PERSONNEL. UNLESS STATED OTHERWISE TEMPORARY WORKS SHALL BE THE BUILDER'S RESPONSIBILITY. 4. THE BUILDER SHALL LOCATE ALL EXISTING AND PROPOSED SERVICES AND EASEMENTS, ON AND ADJACENT TO THE SITE. THE APPROVAL OF THE RELEVANT STATUTORY AUTHORITY AND THE ENGINEER SHALL BE OBTAINED BEFORE BUILDING ON OR OVER ANY SERVICES OR EASEMENTS. 5. THE BUILDER SHALL NOT EXCAVATE BELOW THE LEVEL OF THE FOOTINGS TO ANY EXISTING BUILDINGS WITHOUT THE WRITTEN CONSENT OF THE ENGINEER. 6. THE WRITTEN CONSENT OF ADJOINING PROPERTY OWNERS SHALL BE OBTAINED BEFORE INSTALLATION OF UNDERPINNING, ANCHORING WORK, DRAINAGE LINES OR ANY OTHER WORK BEYOND THE PROPERTY BOUNDARY. 7. NO HOLES OR CHASES SHALL BE MADE IN ANY STRUCTURAL ELEMENT, UNLESS SHOWN ON THESE DRAWINGS OR WRITTEN APPROVAL OF THE ENGINEER. 8. A FULL DEPTH 'V' JOINT SHALL BE STRUCK IN RENDER WHERE TWO DIFFERING STRUCTURAL MATERIALS ABUT. i.e. AT THE JUNCTION OF MASONRY WITH CONCRETE. 9. WATERPROOFING REQUIREMENTS SHALL BE SPECIFIED BY THE ARCHITECT AND ARE NOT NECESSARILY INDICATED ON THESE DRAWINGS. ALL JOINTS IN CONCRETE ELEMENTS SHALL BE SUITABLY SEALED OR DAMP-PROOFED. 10. APPROVAL OF A SUBSTITUTION OR ALTERNATIVE FROM THE ENGINEER IS NOT, IN ITSELF AUTHORISATION FOR A VARIATION. 11. THE ENGINEER SHALL BE GIVEN 48 HOURS NOTICE FOR INSPECTIONS. 12. THESE DRAWINGS AND NOTES SHALL BE READ IN CONJUNCTION WITH ALL ARCHITECTURAL AND OTHER CONSULTANT'S DRAWINGS, REPORTS, SPECIFICATIONS AND ANY OTHER WRITTEN INSTRUCTIONS AS MAY BE ISSUED DURING THE COURSE OF CONSTRUCTION. ALL DISCREPANCIES SHALL BE REFERRED TO THE ENGINEER FOR CLARIFICATION OR DECISION BEFORE PROCEEDING WITH THE WORK. 13. THE BUILDING SHALL NOT BE ERECTED ON OR ADJACENT TO ANY OF THE FOLLOWING HAZARDS UNLESS THE HAZARD IS INDICATED ON THE STRUCTURAL DRAWING: - EMBANKMENTS, BATTERS, WATER RETAINING STRUCTURES, RETAINING WALLS, PITS, SEWERS, SERVICE TRENCHES, DRAINAGE CHANNELS, STREAMS OR ANY POTENTIAL SOURCE OF DAMAGE TO THE STRUCTURE. IF ANY SUCH HAZARDS ARE ENCOUNTERED THE ENGINEER SHALL BE NOTIFIED AND HIS APPROVAL OBTAINED BEFORE PROCEEDING. 14. ALL WORKMANSHIP AND MATERIALS SHALL BE IN ACCORDANCE WITH THE RELEVANT AUSTRALIAN STANDARDS, THE BUILDING CODE OF AUSTRALIA, AND THE REQUIREMENTS OF THE RELEVANT STATUTORY AUTHORITIES. ALL WORKMANSHIP SHALL BE CONSISTENT WITH GOOD TRADE PRACTICE. 15. AUSTRALIAN STANDARDS REFERRED TO ON THESE DRAWINGS SHALL BE THE LATEST REVISIONS OF THE NOMINATED STANDARD. FOUNDATIONS 1. FOUNDATION MATERIAL SHALL BE INSPECTED AND APPROVED FOR THE NOMINATED SITE CLASSIFICATION AND ALLOWABLE BEARING CAPACITY BY A GEOTECHNICAL ENGINEER BEFORE PLACING FOOTING REINFORCEMENT. 2. ALL FOUNDATIONS MUST BE STABLE AND UNIFORM THROUGHOUT. 3. REFER SLAB DESIGN CRITERIA FOR CLASSIFICATION OF SITE. CONCRETE 1. ALL WORKMANSHIP AND MATERIALS SHALL BE IN ACCORDANCE WITH AS 3600 AND ANY OTHER RELEVANT AUSTRALIAN STANDARDS UNLESS VARIED BY THE ENGINEER. 2. ALL CONCRETE SHALL BE PROPERLY CURED. CURING SHALL COMMENCE WITHIN 2 HOURS OF POURING AND SHALL CONTINUE FOR A MINIMUM OF 7 DAYS, FOLLOWED BY A GRADUAL DRYING OUT. CURING SHALL BE BY CONTINUOUS SATURATION WITH POTABLE WATER OR BY USE OF AN APPROVED PROPRIETARY CURING COMPOUND COMPLYING WITH AS 3799, APPLIED UNIFORMLY IN ACCORDANCE WITH THE MANUFACTURERS INSTRUCTIONS. THE COMPATIBILITY OF CURING COMPOUNDS WITH PROPOSED APPLIED FINISHES SHALL BE VERIFIED PRIOR TO APPLICATION. FORMED SURFACES EXPOSED WITHIN 14 DAYS OF CASTING SHALL BE SPRAYED WITH AN APPROPRIATE CURING AGENT IMMEDIATELY UPON EXPOSURE. 3. HOLES, PENETRATIONS, CHASES AND CONSTRUCTION JOINTS, OTHER THAN THOSE SHOWN ON THE STRUCTURAL DRAWINGS SHALL NOT BE MADE IN CONCRETE MEMBERS WITHOUT THE PRIOR APPROVAL OF THE ENGINEER. 4. CONSTRUCTION JOINTS SHALL BE PROPERLY FORMED WHERE VERTICAL. THE FIRST POUR SHALL BE THOROUGHLY SCABBLED AND CLEANED OF ALL POORLY COMPACTED MATERIAL AND LAITANCE, THOROUGHLY SOAKED AND PAINTED WITH A 2:1 SAND CEMENT SLURRY IMMEDIATELY BEFORE PLACING THE SECOND POUR. THOROUGHLY COMPACT THE SECOND POUR AGAINST THE FIRST POUR. 5. CONDUITS, PIPES AND THE LIKE SHALL BE PLACED WITHIN THE MIDDLE THIRD OF THE SLAB DEPTH AND AT A MINIMUM SPACING OF NOT LESS THAN 3 DIAMETERS. CONDUITS AND PIPES SHALL NOT BE PLACED WITHIN THE CONCRETE COVER OUTLINED BELOW. 6. THE FINISHED CONCRETE SHALL BE FULLY MECHANICALLY VIBRATED TO ACHIEVE FULL COMPACTION, COMPLETELY FILLING FORMWORK, THOROUGHLY EMBEDDING THE REINFORCEMENT AND FREE OF STONE POCKETS. ALL CONCRETE, INCLUDING SLABS ON GROUND AND FOOTINGS, SHALL BE FULLY VIBRATED USING A HIGH FREQUENCY MECHANICAL VIBRATOR. 7. SPECIFICATION OF CONCRETE (U.N.O): 8. WHERE A VAPOUR BARRIER IS SPECIFIED BENEATH SLABS ON GROUND PROVIDE A 0.2mm BRANDED POLYTHENE MEMBRANE THROUGHOUT. LAP SHEETS 300mm AND SEAL WITH A 50mm WIDE PRESSURE SENSITIVE WATERPROOF TAPE. 9. BEFORE THE COMMENCEMENT OF CONCRETING THE BUILDER SHALL ENSURE THE CONCRETE OR IS FULLY AWARE OF ANY AREAS OF FORMWORK THAT HAVE BEEN PRE-CAMBERED OR PRE-SET. EXTREME CARE MUST BE TAKEN TO ENSURE THE SPECIFIED DEPTHS OF BEAMS AND SLABS ARE ACHIEVED IN AREAS OF PRE-SET OR PRE-CAMBERED FORMWORK. THIS CANNOT BE ACHIEVED BY LEVELING THE CONCRETE SURFACE INTO THE NOMINAL FINISHED CONCRETE LEVEL. 10. WHERE CONCRETE SLABS BEAR ON MASONRY, INCLUDING CORED BRICKS, THE BEARING SURFACE OF THE MASONRY SHALL BE RENDERED WITH 1:3 CEMENT SAND MORTAR TO GIVE A LEVEL SURFACE AND A METAL SLIP JOINT LAID PROTECTED BY 0.2mm POLYTHENE SHEET TAPED TO FORMWORK BEFORE PLACING CONCRETE. SPECIAL DETAILS SHALL APPLY FOR ROOF SLABS OR SIMILARLY EXPOSED SLABS. 11. NON-LOAD BEARING MASONRY SHALL BE SEPARATED FROM THE SOFFIT OF SLABS AND BEAMS BY 12mm CANITE OR OTHER MEANS APPROVED BY THE ENGINEER. 12. CONSTRUCTION AND SUPPORT PROPPING SHALL BE ADDED, OR LEFT IN PLACE, TO AVOID OVERSTRESSING THE STRUCTURE DUE TO CONSTRUCTION LOADS. C13 NO MASONRY OR PARTITION WALLS SHALL BE CONSTRUCTED ON SUSPENDED LEVELS UNTIL 7 DAYS AFTER PROPPING HAS BEEN REMOVED AND THE SLAB PRE-LOADED WITH THE BRICKS OR MATERIALS TO BE USED IN THE WALL. STRUCTURAL BLOCKWORK/BRICKWORK 1. ALL WORKMANSHIP AND MATERIALS SHALL BE IN ACCORDANCE WITH A.S. 3700 EXCEPT WHERE VARIED BY THE CONTRACT DOCUMENTS 2. ALL LOAD BEARING BRICKS SHALL BE LAID FROGS UP EXCEPT FOR THE TOP COURSE, WHICH SHALL BE LAID FROGS DOWN. WHEN SUPPORTING A CONCRETE SLAB OR BEAM, BRICKWORK SHALL HAVE A LAYER OF MORTAR PLACED ON THE TOP AND TROWELLED SMOOTH, WITH 2 SHEETS OF 'ALCOR' OR EQUIVALENT. U.N.O. THE TOP 2 COURSES OF BRICKS SHALL BE LAID WITH REINFORCEMENT IN THE JOINTS. 3. BRICK COMPRESSIVE STRENGTH F'UC SHALL BE 24MPA MIN. U.N.O. 4. NO BRICKWORK WHICH IS SUPPORTED BY THE SLAB SHALL BE ERECTED UNTIL THE FORMWORK HAS BEEN REMOVED. 5. WHEREVER BRICK WALLS ARE BUILT OFF CONCRETE SLABS, WITH THE EXCEPTION OF THE EXTERNAL OUTER SKIN OF CAVITY WALLS, THEY SHALL BE LAID ON A LIGHT GAUGE BUILDING PAPER TO PERMIT FREE MOVEMENT OF THE SLAB IN RELATION TO THE BRICKWORK. 6. WHERE WALLS ARE NON-LOAD BEARING AT EITHER HORIZONTAL OR VERTICAL FACES THEY SHOULD BE SEPARATED FROM THE CONCRETE BY 12MM THICK POLYSTYRENE U.N.O. 7. PROVIDE WALL TIES AT SLAB LEVEL TO PROVIDE LATERAL SUPPORT TO MASONRY VENEER. SPACE TIES AT 400MM HORIZONTALLY - 1 ROW ONLY. TIES SHALL BE CAST INTO SLAB OR SECURELY SHOT FIXED. THE ENGINEER SHALL BE ADVISED OF THE TYPE AND MODEL OF TIE TO BE USED AS WELL AS THE METHOD OF FIXING TO THE SLAB. 8. BLOCK COMPRESSIVE STRENGTH F'UC SHALL BE 15 MPA MIN. U.N.O BLOCK GRADE SHOULD BE CLEARLY INDICATED ON THE DELIVERY DOCKET. 9. MORTAR SHALL CONSIST OF 1 PART CEMENT, 1 PART LIME AND 6 PARTS SAND. MORTAR SHALL COMPLY WITH A.S. 3700. 10. REINFORCEMENT SHALL BE PLACED AND SECURELY HELD IN THE LOCATIONS INDICATED. RODS SHALL BE TIED TO STARTER BARS IN CLEANOUT BLOCKS. COVER TO VERTICAL REINFORCEMENT SHALL BE 50MM FROM THE OUTSIDE OF THE BLOCK WHERE DRAWN ADJACENT TO BLOCK FACE. 11. MORTAR PROTRUDING INTO CORE HOLES SHALL BE REMOVED BY THE BLOCK LAYER AFTER EACH COURSE IS LAID. EVERY CORE FILLED WITH GROUT SHALL HAVE A CLEANOUT BLOCK IN THE BOTTOM COURSE. 12. PROVIDE VERTICAL CONTROL JOINTS AT 8 METRES MAXIMUM CENTRES, AND 4 METRES MAXIMUM FROM CORNERS IN MASONRY WALLS, AND BETWEEN NEW & EXISTING BRICKWORK. 13. ALL MASONRY WALLS SUPPORTING OR SUPPORTED BY CONCRETE FLOORS SHALL BE PROVIDED WITH VERTICAL JOINTS TO MATCH ANY CONTROL JOINTS IN THE CONCRETE. 14. A 300MM WIDE STRIP OF COARSE-GRAINED MATERIAL IS TO BE PLACED BEHIND ALL RETAINING WALLS. STRUCTURAL STEEL 1. ALL WORKMANSHIP AND MATERIALS SHALL BE IN ACCORDANCE WITH AS 4100, AS 1163, AS 1554.1 AND AS/NZS 4600. 2. THE STRUCTURAL DESIGN HAS BEEN BASED ON THE FOLLOWING STEEL GRADES, U.N.O: HOT ROLLED UNIVERSAL BEAMS, COLUMNS, CHANNELS & ANGLES: 300PLUS CIRCULAR, SQUARE & RECTANGULAR HOLLOW SECTIONS: C350/C450LO COLD FORMED OPEN DURAGAL PROFILES: C400/C450LO COLD FORMED LIPPED CEE & ZED PURLINS: G550/G500/G450 3. BOLTS ARE DESIGNATED ON THE DRAWINGS BY THE NUMBER, DIAMETER, GRADE AND TIGHTENING PROCEDURE IN ACCORDANCE WITH A.I.S.C. BOLTING PROCEDURES (STANDARDISED STRUCTURAL CONNECTIONS) AND A.S.4100. BOLTS NOT DESIGNATED SHALL BE GRADE 8.8/S BOLTS TO AS 1252 TIGHTENED TO A SNUG TIGHT FIT 4. THE CONTRACTOR SHALL PROVIDE ALL CLEATS AND DRILL ALL HOLES NECESSARY FOR FIXING STEEL TO STEEL AND TIMBER AND OTHER ELEMENTS TO STEEL WHETHER OR NOT DETAILED IN THE DRAWINGS. 5. ALL STRUCTURAL STEELWORK BELOW GROUND SHALL BE ENCASED IN CONCRETE MINIMUM 75MM ALL AROUND. 6. CONCRETE ENCASED STEELWORK SHALL BE UNPAINTED, FREE FROM ALL LOOSE RUST, LOOSE MILL SCALE, DIRT, OIL, GREASE ETC AND THE ENCASEMENT CONCRETE STRENGTH SHALL BE MINIMUM OF 25 MPA AND COVER 50 MM. CONCRETE ENCASING SHALL BE CENTRALLY REINFORCED WITH 5MM WIRE TO AS 1303 OR 6MM STRUCTURAL GRADE BARS AS AS 1302 AT 150MM PITCH. 7. STEELWORK NOT ENCASED SHALL HAVE THE FOLLOWING SURFACE TREATMENT: 8. ALL STEELWORK SHALL BE SECURELY TEMPORARILY BRACED AS NECESSARY TO UNTIL ALL THE TIMBER STABILISE THE STRUCTURE DURING ERECTION, FRAMING IS POSITIVELY FIXED TO THE STEELWORK AS DETAILED AND THE PERMANENT WALL BRACING IN PLACE. 9. ALL STRUCTURAL STEEL MEMBERS SPECIFIED ON THE DRAWINGS OR OTHER RELATED CONTRACTS AS BEING GALVANISED SHALL CONFORM TO THE REQUIREMENTS OF A.S.4680. 10. THE MINIMUM APPLICATION RATE FOR GALVANISING SHALL BE 550g/sq.m. REINFORCEMENT 1. REINFORCEMENT IS SHOWN DIAGRAMATICALLY. IT IS NOT NECESSARILY SHOWN IN TRUE PROJECTION. 2. REINFORCEMENT SHALL NOT BE CUT OR WELDED ON SITE WITHOUT APPROVAL BY THE ENGINEER. AT SMALL HOLES LESS THAN 300mm DIAMETER, eg PLUMBING PENETRATIONS, BARS SHALL BE DISPLACED TO EITHER SIDE. 3. REFER TO THE CONCRETE NOTES FOR THE SPECIFIED COVERS TO REINFORCEMENT. COVER MUST BE MAINTAINED AT ALL CHAMFERS, DRIP GROOVES AND REGLETS etc. UNLESS NOTED OTHERWISE ON THE DRAWINGS. 4. SITE BENDING OF REINFORCEMENT SHALL BE AVOIDED IF POSSIBLE. WHERE SITE BENDING IS SPECIFIED, OR UNAVOIDABLE, IT SHALL BE CARRIED OUT COLD, WITHOUT THE APPLICATION OF HEAT, AND IN ACCORDANCE WITH THE PRACTICE NOT RPN1 OF THE STEEL REINFORCEMENT INSTITUTE OF AUSTRALIA. 5. SPLICES IN REINFORCEMENT SHALL BE MADE ONLY IN THE POSITIONS SHOWN. THE WRITTEN APPROVAL OF THE ENGINEER SHALL BE OBTAINED FOR ANY OTHER SPLICES. WHERE LAP LENGTHS ARE NOT SHOWN THEY SHALL BE AS INDICATED BELOW: *LENGTHS SHOWN IN BRACKETS APPLY TO HORIZONTAL BARS WITH MORE THAN 300mm OF CONCRETE CAST BELOW THE BAR. 6. REINFORCEMENT SYMBOLS: a.N - DENOTES D500N DEFORMED BAR TO AS 4671 b. R - DENOTES 250R HOT ROLLED PLAIN BAR TO AS 4671 c. SL/RL - DENOTES HARD DRAWN WIRE REINFORCEMENT FABRIC TO AS 4671 d. W - DENOTES R500L HARD DRAWN PLAIN WIRE TO AS 4671 7. ALL REINFORCING FABRIC SHALL COMPLY WITH AS 1303 AND AS 1304 8. FABRIC REINFORCEMENT SHALL BE LAPPED TWO TRANSVERSE WIRES PLUS 50mm. 9. JOGGLES TO BARS SHALL COMPRISE A LENGTH OF 12 BAR DIAMETERS BETWEEN BEGINNING AND END OF AN OFFSET OF ONE BAR DIAMETER. 10. ALL REINFORCEMENT SHALL BE CHAIRED AT MAXIMUM CENTERS AS FOLLOWS: a.BARS - 800 CENTERS EACH WAY b. FABRIC - 600 CENTERS EACH WAY EXTRA CHAIRS MAY BE REQUIRED ADJACENT TO SLAB EDGES AND JOINTS TO PREVENT THE UPWARD DEFLECTION OF THE FABRIC WHEN STOOD ON. 11. ALL STEEL CHAIRS SHALL BE PLASTIC TIPPED. STEEL CHAIRS SHALL ONLY BE USED FOR EXPOSURE CONDITIONS A1 AND A2. FULLY PLASTIC CHAIRS ONLY SHALL BE USED ON ELEMENT FACES HAVING EXTERNAL EXPOSURE IN THE COMPLETED STRUCTURE. WHERE REINFORCEMENT IS GROUND SUPPORTED PROVIDE PLATES UNDER ALL BAR CHAIRS. 12. AT THE END SUPPORT OF A SLAB ON A MASONRY WALL, ALL BOTTOM REINFORCEMENT SHALL EXTEND OVER THE MASONRY WALL BY 75mm FOR N12 BARS OR 95mm FOR N16 BARS. IF COVER REQUIREMENTS PROHIBIT THIS THE BARS SHALL BE COGGED. TIMBER 1. ALL TIMBER STRUCTURAL MEMBERS SHALL BE PLACED AND FIXED IN ACCORDANCE WITH AS 1684 AND AS 1720 AS APPROPRIATE. 2. ROOF TRUSSES SHALL BE DESIGNED IN ACCORDANCE WITH THE TIMBER STRUCTURES CODE AS 1720. THE TRUSS DESIGNER SHALL PROVIDE DETAILS OF ALL PLATES AND CLEATS ATTACHED TO STEELWORK TO SUPPORT ROOF TRUSSES. 3. ALL DETAILS NOT SHOWN ON THESE DRAWINGS SHALL BE IN ACCORDANCE WITH AS1684.2 AND SOUND BUILDING PRACTICE TO WIND RATING DETAILED IN GENERAL NOTES. TIMBER MEMBERS NOT INDICATED ON THE ROOF MARKING PLAN SHALL BE SELECTED IN ACCORDANCE WITH THE ABOVE CODES. 4. THE ROOF SHALL BE DESIGNED FOR WIND LOADING IN ACCORDANCE WITH AS 1684, AS 1170.2, AND AS 4055. 5. DEFLECTION OF TRUSSES SHALL BE LIMITED TO SPAN/600 UNDER LONG TERM DEAD LOAD. 6. ROOF TRUSSES: - A DESIGN CERTIFICATE IS TO BE PROVIDED PRIOR TO TRUSS MANUFACTURE AND SIGNED BY TRUSS ENGINEER ONCE TRUSSES ARE INSTALLED. THE TRUSS ENGINEER IS TO PROVIDE A CERTIFICATE INDICATING THAT THE TRUSSES HAVE BEEN INSTALLED AS REQUIRED. CERTIFICATE SHOULD ALSO INCLUDE AND COVER ALL BRACING AND TIE DOWN REQUIREMENTS. 7. TIMBER TRUSSES SHALL BE PRE-CAMBERED AN AMOUNT EQUAL TO DEAD LOAD DEFLECTION. MINIMUM CAMBER SHALL BE 5mm MAXIMUM DIFFERENTIAL CAMBER 6mm TO ADJACENT TRUSS. 8. SOFTWOOD SHALL BE MINIMUM GRADE F5 U.N.O. HARDWOOD SHALL BE MINIMUM GRADE F14. 9. ALL TIMBER JOINTS AND NOTCHES SHALL BE 100 mm ALL TIMBER JOINTS SHALL BE FREE FROM DEFECTS. MINIMUM AWAY FROM LOOSE KNOTS, SEVERE SLOPING GRAIN, GUM VEINS OR OTHER MINOR DEFECTS. 10. DURING CONSTRUCTION IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO ENSURE THAT THE TIMBER IS PROTECTED FROM THE WEATHER AND STRENGTH IS NOT IMPAIRED IN ANY WAY. 11. THE ACTUAL DIMENSIONS OF THE TIMBER SHALL NOT DIFFER IN ANY WAY FROM THOSE NOMINATED ON THE DRAWINGS BY MORE THAN THE TOLERANCES ALLOWED IN AS 1748, AS 2082 AND AS 2858. 12. ALL BOLTS IN TIMBER CONSTRUCTION SHALL BE MINIMUM M16 U.N.O. ALL BOLTS, NUTS, WASHERS AND SCREWS SHALL BE HOT DIP GALVANISED AND FIXED IN ACCORDANCE WITH AS 1720. BOLT HOLES SHALL BE DRILLED EXACT SIZE. WASHERS UNDER HEADS AND NUTS SHALL BE AT LEAST 2.5 TIMES BOLT DIAMETER. Element Slump Max. Agg. Cement Type Con. Grade Exp. Class. Fire Rate Cover U.N.O. Piers 80 20 GP 25MPa A2 - - Reinforced piers 80 20 GP 32MPa A2 - 60 Footings 80 20 GP 25MPa A2 - 50 Columns 80 20 GP 32MPa A1 3hr 35 Walls 80 20 GP 32MPa A1 3hr 35 Core Filling Grout 230+/-30 10 GP 25MPa B1 - - Ext. Slab on Ground 80 20 SL 25MPa B1 - 40 Int. Slab on Ground 80 20 SL 25MPa A1 - 30 Ext. Suspended Slabs/Beams 80 20 GP 32MPa B1 2hr 40 Int Suspended Slabs/Beams 80 20 GP 32MPa A1 2hr 20 Tilt-up Wall Panels 80 20 SL 32MPa B1 3hr 30 NOTE: 1. ALL CONCRETE WITH SHRINKAGE LIMITED (SL) CEMENT SHALL HAVE A MAXIMUM SHRINKAGE STRAIN OF 600 MICROSTRAINS AS DETERMINED BY TEST IN ACCORDANCE WITH AS 1012.13 AFTER 8 WEEKS OF DRYING. 2. WATER CEMENT RATIO OF CONCRETE SHALL NOT EXCEED 0.45 (EXCEPT FOR CORE FILLING GROUT IN BLOCK WALLS) BAR SIZE MIN. LAP LENGTH N12 300 -400 N16 400 -500 N20 500 -650 N24 600 -750 N28 800 -1000 N32 1000 -1250 N36 1200 -1500 EXPOSURE CLASS. STEELWORK PROTECTION REQUIRED A1/A2 POWER TOOL CLEAN TO AS1627 CLASS 1 1 COAT ALKYD PRIMER (ZINC PHOSPHATE) B1 ABRASIVE BLAST TO AS1627 CLASS 2.5 1 COAT INORGANIC ZINC SILICATE B2 HOT DIPPED GALVANIZED TO AS4680
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