Big Foot Walkway Technical Data:Layout 1

Big Foot Systems | Technical DataHeronhill - for all your Big Foot requirementsBig Foot WalkwayTypical ApplicationFor establishing clear, safe pathways around installations on aflat roof. Provides a secure route for service engineers to gainaccess to plant and for managing the flow of other personnel.Dimensional Data & Product WeightsSectionNameLengthoutside ofmetalwork(mm)Width ofwalkablesection(mm)Width tooutside ofBig Foot(mm)Height towalkwaysurface(mm)Heightto top ofhandrail(mm)Approx.Weight(Kg)AA (1.5m) 1496 1018 1388 168 1065 6990º 1536 1018 1388 168 1065 8245º 1934 1018 1388 168 1065 102T-Junction 1530 1018 1388 168 1065 80PQ (1.5m) 1496 1018 1388 168 1065 64PQ (1.0m) 1058 1018 1388 168 1065 51OO (1.0m) 1058 1018 n/a 168 1065 45OO (0.5m) 445 1018 n/a 168 1065 33Supplied flat packedEasy assemblyRemovable sectionsWeight / Load spreadingWalkway MetalworkSmooth Surface FinishExcellent WeldabilityHigh StrengthSupplied to EN10219 S235 J0H, EN10219 S275 J2H & EN10219 S355 J2HLock Nuts are M24, type C form Din 936 Washers to BS 4320-BLarge M24 Nut & Studding manufactured from Mild Steel Grade EN1A (Leaded)Main framework 40mm x 40mm x 2.5mm thick steel tubeTel: 01823 665660 www.heronhill.co.uk Fax: 01823 665807BIG FOOT 06/08Big Foot Systems Apex Way Hailsham East Sussex BN27 3WA United Kingdomt +44 (0)1323 844 355 f +44 (0)1323 844 959 sales@bigfootsystems.co.uk www.bigfootsystems.co.uk1

Big Foot Systems | Technical DataHeronhill - for all your Big Foot requirementsBig Foot WalkwayBig Foot Plastic FootMaterial – Nylon 6 B601L 30% Glass Fibre FilledPropertyTest MethodASTMTest MethodISO EquivUnits Value 30%PhysicalSpecific gravityD792ISO 1183Kg/m³1.36Water AbsorbtionD570ISO 62%1.1Mould Shrinkage (flow)ISO 2577%0.35MechanicalTensile StrengthD638ISO 527MPa130Elongation at breakD638ISO 527%4Flexural StrengthD790ISO 178MPa190Flexural modulusD790ISO 178Gpa5900Notched Charpy ImpactISO 179/1eAkJ/m²45Unnotched Charpy ImpactISO 179/1eUkJ/m²ThermalMelting PointISO 3146°C220Vicat Softening PointD789ISO 12188°CDeflection TemperatureD648ISO 75°CA 1.85 Mpa210A 0.46 Mpa220FlammabilityUL94 m/m ISO 75 V2All data generated from specimens moulded in natural material, stored in a dry atmosphere (no more than0.2% moisture). The inclusion of colour pigments or other additives may change some of the test resultsAll technical information supplied is accurate and reliable to the best of our knowledge. The information isgiven without warranty or guarantee and is intended for initial guidance or comparative purposes.Tel: 01823 665660 www.heronhill.co.uk Fax: 01823 665807BIG FOOT 06/08Big Foot Systems Apex Way Hailsham East Sussex BN27 3WA United Kingdomt +44 (0)1323 844 355 f +44 (0)1323 844 959 sales@bigfootsystems.co.uk www.bigfootsystems.co.uk2

Big Foot Systems | Technical DataHeronhill - for all your Big Foot requirementsBig Foot WalkwayWalkway GridGrating supplied gritted available coloured yellow or greySlip resistantImpact resistantFire resistant – meets British Standard BS 476 Part 7Corrosion resistantGrid PatternPlan View25 x 38 SMLoad Bar Thickness38mm6.4mm6.4mmLoad bar Centres38mmNo. Bars per foot8Open AreaElevation68%Approx. Weight25mm38mm6.4mm12.3 kgs/sq.mTel: 01823 665660 www.heronhill.co.uk Fax: 01823 665807BIG FOOT 06/08Big Foot Systems Apex Way Hailsham East Sussex BN27 3WA United Kingdomt +44 (0)1323 844 355 f +44 (0)1323 844 959 sales@bigfootsystems.co.uk www.bigfootsystems.co.uk3

Big Foot Systems | Technical DataHeronhill - for all your Big Foot requirementsBig Foot WalkwayLife ExpectancyThe Big Foot Walkway, when subjected to normal conditions of exposure and use, will retain its integrity fora period in excess of 25 years.Installation GuidelinesPlease consult Big Foot Walkway Installation Sheets. Can be obtained by contacting Big Foot Systems.Slip ResistanceThe Big Foot Walkway grating has been tested for slip resistance using the Pendulum Test procedure.The Pendulum Test is designed to test the slip resistance of floor surfaces and is universally accepted asthe best test available.The Skid Resistance Tester operates thanks to a pendulum with a rubber slider, which bounces from a fixedheight and sharpens with an edge over a fixed length of the road surface. The energy converted by thesliding procedure is determined on the basis of the climbing height of the pendulum and results in ameasure for the pavement grip of the examined surface.The Big Foot Walkway grating achieved the following results when tested:Dry Reading 70Wet Reading 65The UK Slip Resistance Group guide to slip resistance of a floor for able bodied pedestrians:Four S Pendulum ValueAbove 65Potential for SlipExtremely Low35 to 65 Low25 to 65 Moderate25 and Below HighTel: 01823 665660 www.heronhill.co.uk Fax: 01823 665807BIG FOOT 06/08Big Foot Systems Apex Way Hailsham East Sussex BN27 3WA United Kingdomt +44 (0)1323 844 355 f +44 (0)1323 844 959 sales@bigfootsystems.co.uk www.bigfootsystems.co.uk5

Big Foot Systems | Technical DataHeronhill - for all your Big Foot requirementsBig Foot WalkwaySection DiagramsAA (1.5m) 90º 45ºT-JUNCTIONPQ (1.5m) PQ (1m) OO (1m) OO (0.5m)1018mm1388mm103mm168mm1065mmFull technical drawings of each section are available on request and can be obtained by contactingBig Foot Systems.BBJ Engineering takes no responsibility for the condition of the roof on which our equipment is to be used. Youmust ensure that the substrate on which the Big Foot is intended for use is structurally sound enough to take theweight and point loadings we have indicated. The Big Foot products must be installed in line with the guaranteesand recommendations of the manufacturer of the roofing system. The manufacturer of PVC membranes shouldadvise on the susceptibility migration of plasticizers and specific recommendations should be adhered to so thatthe roof guarantee is not affected.Tel: 01823 665660 www.heronhill.co.uk Fax: 01823 665807BIG FOOT 06/08Big Foot Systems Apex Way Hailsham East Sussex BN27 3WA United Kingdomt +44 (0)1323 844 355 f +44 (0)1323 844 959 sales@bigfootsystems.co.uk www.bigfootsystems.co.uk6