formwork PRINCIPLE 1 PRINCIPLE 4 solutions PRINCIPLE 6 · formwork requirement. Gunnersen Formwork...

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PRINCIPLE 1 Most issues with off-form surface finishes are associated with moisture. Wherever possible protect the formwork from weather. This includes tarping where practical. PRINCIPLE 2 The phenolic surface film used on formwork plywood is not impermeable to moisture. To ensure that moisture penetration is minimised, release agent and form oils must be used. Form oils and release agents assist in minimising moisture penetration where the phenolic surface film has been damaged. PRINCIPLE 3 Plywood must be supplied to the jobsite flat. Any sheets showing bow or twist greater than 30mm should be returned to the manufacturer. PRINCIPLE 4 Where flat plywood has been supplied, the formwork is responsible for any distortion following installation. Decks must be inspected prior to pouring and any distorted sheets likely to cause surface imperfections nailed and screwed flat. Sheets must be positively fixed. It is not adequate to rely on the weight of the concrete to flatten distorted formwork plywood sheets. PRINCIPLE 5 Where severe weather exposure is expected, such as in summer months, consideration should be given to using thicker plywood with a heavier grade of phenolic surface film and a thinner face veneer. This will minimise both distortion and grain raising. PRINCIPLE 6 Correct storage is critical to maximize the life of the formply and to maintain flatness. Formply should always be stored on 3 supports and protected from the weather. Good Practice For class 2 or class 3 finish DISCLAIMER: It is impossible to predict or guarantee the class of off-form finish or number of reuses as so much depends on the onsite care and installation. The class branding on formwork is only an indicator of the highest class that may be achieved on the first use with proper onsite care and installation. Please refer to our technical note on good practices required to reliably and consistently achieve a Class 2 or Class 3 surface finish outlined in the principles above. VICTORIA Melbourne Head Office and Sales: 112 Salmon Street, Port Melbourne, VIC 3207 Telephone: (03) 9647 9930 Facsimile: (03) 9647 9991 Distribution Centre 58 Parkwest Drive, Parkwest Estate Derrimut, VIC 3030 NEW SOUTH WALES Sydney 17-19 McKay Close, Wetherill Park, NSW 2164 Telephone: (02) 9757 6999 Facsimile: (02) 9757 3935 SOUTH AUSTRALIA Adelaide 5 Johansson Road, Wingfield, SA 5013 Telephone: (08) 8359 1660 Facsimile: (08) 8359 1669 QUEENSLAND Brisbane 186 Boundary Road West, Rocklea, QLD 4106 Telephone: (07) 3722 3500 Facsimile: (07) 3277 3827 Townsville Unit 2, 207 Dalrymple Road, Garbutt, QLD 4814 Telephone: (07) 4779 0877 Facsimile: (07) 4779 3245 Cairns 303 Little Spence Street, Cairns, QLD 4870 Telephone: (07) 4035 3955 Facsimile: (07) 4035 3950 WESTERN AUSTRALIA Perth 79-83 Pilbara Street, Welshpool, WA 6106 Telephone: (08) 9356 9911 Facsimile: (08) 9356 9922 NEW ZEALAND Auckland 61-69 Patiki Road Avondale, Auckland. Freecall: 0800 448 663 Telephone: +64 (09) 828 2089 Facsimile:+64 (09) 828 2228 formwork solutions Technical Plywood Division of Gunnersen

Transcript of formwork PRINCIPLE 1 PRINCIPLE 4 solutions PRINCIPLE 6 · formwork requirement. Gunnersen Formwork...

PRINCIPLE 1Most issues with off-form surface finishes areassociated with moisture. Wherever possibleprotect the formwork from weather. This includestarping where practical.

PRINCIPLE 2The phenolic surface film used on formworkplywood is not impermeable to moisture. Toensure that moisture penetration is minimised,release agent and form oils must be used. Formoils and release agents assist in minimisingmoisture penetration where the phenolic surfacefilm has been damaged.

PRINCIPLE 3Plywood must be supplied to the jobsite flat.Any sheets showing bow or twist greater than30mm should be returned to the manufacturer.

PRINCIPLE 4Where flat plywood has been supplied, the formworkis responsible for any distortion following installation.Decks must be inspected prior to pouring and anydistorted sheets likely to cause surfaceimperfections nailed and screwed flat.Sheets must be positively fixed. It is not adequate torely on the weight of the concrete to flatten distortedformwork plywood sheets.

PRINCIPLE 5Where severe weather exposure is expected, suchas in summer months, consideration should begiven to using thicker plywood with a heavier gradeof phenolic surface film and a thinner face veneer.This will minimise both distortion and grain raising.

PRINCIPLE 6Correct storage is critical to maximize the life of theformply and to maintain flatness. Formply should alwaysbe stored on 3 supports and protected from the weather.

Good Practice For class 2 or class 3 finish

DISCLAIMER: It is impossible to predict or guarantee the class of off-form finish or number of reuses as so much dependson the onsite care and installation. The class branding on formwork is only an indicator of the highest class that may beachieved on the first use with proper onsite care and installation. Please refer to our technical note on good practices requiredto reliably and consistently achieve a Class 2 or Class 3 surface finish outlined in the principles above.

VICTORIA

Melbourne

Head Office and Sales:112 Salmon Street, Port Melbourne, VIC 3207Telephone: (03) 9647 9930Facsimile: (03) 9647 9991

Distribution Centre

58 Parkwest Drive, Parkwest EstateDerrimut, VIC 3030

NEW SOUTH WALES

Sydney

17-19 McKay Close, Wetherill Park, NSW 2164Telephone: (02) 9757 6999Facsimile: (02) 9757 3935

SOUTH AUSTRALIA

Adelaide

5 Johansson Road, Wingfield, SA 5013Telephone: (08) 8359 1660Facsimile: (08) 8359 1669

QUEENSLAND

Brisbane

186 Boundary Road West, Rocklea, QLD 4106Telephone: (07) 3722 3500Facsimile: (07) 3277 3827

Townsville

Unit 2, 207 Dalrymple Road,Garbutt, QLD 4814Telephone: (07) 4779 0877Facsimile: (07) 4779 3245

Cairns

303 Little Spence Street, Cairns, QLD 4870Telephone: (07) 4035 3955Facsimile: (07) 4035 3950

WESTERN AUSTRALIA

Perth

79-83 Pilbara Street, Welshpool, WA 6106Telephone: (08) 9356 9911Facsimile: (08) 9356 9922

NEW ZEALAND

Auckland

61-69 Patiki RoadAvondale, Auckland.Freecall: 0800 448 663Telephone: +64 (09) 828 2089Facsimile:+64 (09) 828 2228

formworksolutions

Technical Plywood Division of Gunnersen

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PERFORM F17 (17mm)An imported high quality plywood constructed frommixed species of Tasmanian eucalypt veneers. Theseare glued with phenol formaldehyde resin and overlaidwith a hard durable resin impregnated paper. Durableand ideal for general formwork use such as decks,precast and tilt-up panel construction.

PERFORM F17 (12mm)An imported high quality plywood constructed fromtotal birch hardwood. These are glued with phenolformaldehyde resin and overlaid with a hard durableresin impregnated paper. Available in a 12mmthickness for systems designed to use thin formply.Durable and ideal for general formwork use such asdecks, precast and tilt-up panel construction.

ARMOURFORM F17 An Australian made high quality plywood constructedfrom mixed species veneers with a hardwood face andphenolic overlay. Durable and ideal for generalformwork use such as decks, precast and tilt-up panelconstruction.

Note: With proper on-site care and installation, a goodquality off-form finish can be achieved. Refer AS3610.

DEXIFORM F17An imported formply constructed from mixedspecies veneers with eucalypt core veneers, aplantation hardwood face and phenolic overlay.Dexiform F17 is ideal for general formwork usesuch as decks, retaining walls, bridges andculvert construction.

FORMrite F14An Australian made quality plywood panelproduced predominantly from graded Pinusradiata veneers. These are glued with phenolformaldehyde resin and overlaid with a harddurable resin impregnated paper to giveconcrete a smooth finish. The hard phenolicsurface and high quality outer veneers make itdurable and reusable. Ideal for generalformwork use such as decks, retaining walls,bridges and culvert construction.

Note: With proper on-site care and installation, a goodquality off-form finish can be achieved. Refer AS3610.

HYPERFORM F22An imported quality formply made to high performanceand quality standards. The 13 ply total birch hardwoodconstruction gives overall enhanced performance.Hyperform is highly rated in strength and stiffness, adesign feature that can save money whilst alsoproviding a superior cost effective formwork system.Hyperform is ideal for general formwork use such asdecks, precast and tilt-up panel construction,tableforms, shutters, columns, conventional andsystem formwork, as well as heavy civil engineeringand mining applications. Hyperform F22 can be usedto achieve a good quality off-form finish. Refer AS3610.

ARMOURFORM F27A total hardwood formply with a high density phenolicoverlay. This premium quality, Australian made formplyis designed and manufactured for fixed formworkapplications. Armourform F27 has superior spanningcapabilities and is ideal for tableforms, jumpforms,slipforms, shutters, heavy civil engineering and miningapplications.

Note: With proper on-site care and installation, a goodquality off-form finish can be achieved. Refer AS3610.

Technical Plywood Division of Gunnersen Good Better Best

formwork solutions

DEXIFORM F17 FORMrite F14

Stress Grade F17 F14

Sizes 2400 x 1200 x 17mm 2400 x 1200 x 17mm1800 x 1200 x 17mm

Standard AS/NZS 6669 AS/NZS 6669

Timber Species Eucalypt Core, Pynus RadiataPlantation Hardwood Face

Adhesives Phenol Formaldehyde Phenol Formaldehyde

Bonds Type A Type A

Formaldehyde E0 E0

Off-form Finish Suitable Class 3 Suitable Class 2 & Class 3

Certification BSI Benchmark EWPAA

Chain of Custody FSC FSC

PERFORM F17 (17mm) PERFORM F17 (12mm) ARMOURFORM F17

Stress Grade F17 F17 F17

Sizes 2400 x 1200 x 17mm 2400 x 1200 x 12mm 2400 x 1200 x 17mm1800 x 1200 x 17mm 1800 x 1200 x 17mm

Standard AS/NZS 6669 AS/NZS 6669 AS/NZS 6669

Timber Species Tasmanian Eucalypt Birch Hardwood Mixed HardwoodRadiata Pine

Adhesives Phenol Formaldehyde Phenol Formaldehyde Phenol Formaldehyde*

Bonds Type A Type A Type A or B

Formaldehyde E0 E0 E0

Off-form Finish Suitable Class 2 &Class 3 Suitable Class 2 &Class 3 Suitable Class 2 &Class 3

Certification SAI Global Compliant EWPAA

Chain of Custody PEFC FSC AFS AS4707 (PEFC)

*Alternatively use Melamine fortified Urea Formaldehyde

HYPERFORM F22 ARMOURFORM F27

Stress Grade F22 F27

Sizes 2400 x 1200 x 17.5mm 2400 x 1200 x 17mm1800 x 1200 x 17.5mm 1800 x 1200 x 17mm

Standard AS/NZS 6669 AS/NZS 6669

Timber Species Birch Hardwood Mixed Hardwood

Adhesives Phenol Formaldehyde Melamine Fortified Urea Formaldehyde

Bonds Type A Type B

Formaldehyde E0 E0

Off-form Finish Suitable Class 2 &Class 3 Suitable Class 2 &Class 3

Certification BSI Benchmark EWPAA

Chain of Custody FSC AFS AS4707 (PEFC)

Gunnersen Formwork Solutions offer anextensive range of formwork products to deliveryou the best possible choice. Our rangeconsists of products with different strengths,costs and surface finishes to provide a good,better or best choice for the solution to yourformwork requirement.

Gunnersen Formwork Solutions products can be used for a range of applications.

• Decks• Precast and tilt-up panels• Conventional and system formwork• Jumpforms• Slipforms• Heavy civil engineering• Mining applications

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