8m tunnel specification

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 Commitment, Quality, Design TECHNICAL SPECIFICATIONS AG Polytunnels 1 Dowles Cottage Dymock Gloucester Gloucestershire GL18 2AF United Kingdom Tel No: 01531 890 675 Mobile: 07764 977 830 Website: www.agpolytunnels.co.uk Email: [email protected] AG  Polytunnels 

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8/13/2019 8m Tunnel Specification

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 Commitment, Quality, Design 

TECHNICAL SPECIFICATIONS 

AG Polytunnels 1 Dowles Cottage 

Dymock Gloucester 

Gloucestershire GL18 2AF 

United Kingdom Tel No: 01531 890 675 Mobile: 07764 977 830 

Website: www.agpolytunnels.co.uk Email: [email protected] 

AG Polytunnels 

8/13/2019 8m Tunnel Specification

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Snake clamps fix theridge firmly to thehoops

Steel frame is madefrom Z35 steel. (66%stronger than standardsteel tube). Galvanisedinside and out for long

life

Special brackets to

ridge rings to stopridge moving at endhoops

Timber to timber joins made with 2nail plates per joint

Timber Bracketfixing for timberto hoop

Choice ofhoop spacing

to provide100mph pluswind speeddesign

All foundation tubes are30% thicker than the mainframe to ensure strengthfrom the ground up

Either single orsplit corner braces

Swaged foundation

tubes – Alwaysused on the cornersand to all hoopswhen a base rail orside vent is fitted

Hoop to foundation tube locking

system with cover tensioningfacility – for all structures where'trench and bury' polythenefixing is used

Connections ofbraces to hoops(also lintel if steelend) via Q clips.Tek screws areused to preventslippage.

We recommend thatall tunnels areconcreted into theground.

Triangle brackets fix bracesto horizontal timber to Ali Gripends

Crop Bars increase strength by up to 10% forwind and 50% for snow load

End Frames, 100mm x 50mm

 tanalised timber or steel and aluminium

General Tunnel Information

8/13/2019 8m Tunnel Specification

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Polybuild 8m (26' 3”) Polythene Tunnel

General Specification

Description Metric (M) Imperial (Nominal)A Width 8 26' 3”

B Height 3.5 11' 6”

C Vertical Side Height 1.1 3' 7”

D Door Height 2.2 7' 3”

E Maximum Door Width 6.8 22' 4”

GG Ground to Ground Over Hoop 12.4 41'

8/13/2019 8m Tunnel Specification

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Polybuild 8m (26' 3”) Polythene Tunnel

Frame Specifications

Hoop Spacings 1.25 – 2.5m

Wind speed 85mph with 2.5m or 110mph with 2m hoop spacing

Side Wall Clearance Headroom (Metric) Headroom (Imperial)

0.5m (20”) from Side 2.2 7'2”

1m (39”) from Side 2.6 8'6”

2m (78”) from Side 3.0 9'10”

Frame Information

Tube Size - Hoop 60mm x 1.5mm 2⅜”

Tube Size - Braces 50mm x 1.5mm 2”

Tube Size – Anchors(intermediate hoops for trench and bury) 50mm x 2.0mm 2”

Tube Size – Anchors(Corners and hoops with base rail)

60mm x 2.0mm 2⅜”

Tube Size - Ridge 50mm x 1.5mm 2”

Timber End (Standard) 100mm x 50mm 4” x 2”

Steel and Aluminium End 50mm x 1.5mm & Ali Grip Rail 2” & Ali Grip Rail

Doors

Good quality doors are important for ease of access, longevity and to save frustrations! Polybuild manufacturehigh quality doors as well as ventilation panels in either tanalised timber or galvanised steel.

Vent panels are pivoted on special plates and controlled with rope and cleat tie off with tower bolts to close.

Hinged Doors are complete with galvanised `T' hinges, handles, tower bolts, drop bolts and auto catches.

Sliding Doors are complete with heavy weight aluminium combined door track and drip proof heading, ballbearing wheels, bottom track, handles and stops

Timber DoorsDoor panels made from truss grade, planed and tanalised timber, 90mm x 40mm cross section, factory assembled(via mortise and tenon joints) and site clad with 'Correx' rigid polypropylene.

Timber framed vent panel 1.15m high x 2.3m wide.

Hinged timber doors 1.15m wide x 2.2m high

Sliding doors 1.15m wide x 2.2m high.

Steel Doors

Door panels made from box section 32 x 32 galvanised steel (hot dip galvanised after welding / manufacture), andfactory clad with 'Biolex' rigid PVC. Doors may also be clad using 10 mm thick polycarbonate top panels and

sheet steel bottom panels (or all polycarbonate panels)Single sliding door 1.20m wide x 2.25m high

Double sliding doors 2.40m wide x 2.25m high.

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Polybuild 8m (26' 3”) Polythene Tunnel

Options Available

Crop Supports Crop supports increase the wind speed strength by 10% and the snow loadstrength by 50%. 35mm x 1.5mm Steel tube

Side rails

Gutter side rail Aluminium side guttersTimber side rail 100 x 50 tanalised timber

Aluminium Grip Rail 'Hollow Box Ali-Grip'

Base Rails

Allows the side wall cladding to be fitted without 'trenching and burying'. The ends of the structure are fitted with a100 x 50 tanalised timber base rail/or 'Ali-Grip' profile rail.

Timber side rail 100 x 50 tanalised timber

Aluminium Grip Rail 'Hollow Box Ali-Grip'

Irrigation

Overhead irrigation (requires cropbars)

The polytunnel is fitted with a PVC overhead spray line system completewith PVC piping, suspension kit, pinjet nozzles, filters and drain valve.

Header Kits The spray lines are end/centre fed and are interconnected via a headermain with 1 hand valve per line and one main isolator valve.

Side Ventilation

Gutters along sides Aluminium side gutters

Timber side rail 100 x 50 tanalised timber

Aluminium Grip Rail 'Hollow Box Ali-Grip'

Polythene

This tunnel requires the following polythene for cladding:-11.1m wide for cladding to a side vent14m wide for 'trench and bury', base aluminium grip rail and timber base rail

Polythene Information

Clear Ultra violet inhibited clear polythene with a proportional 5 year life guarantee against prematurefailure

Politherm `Politherm AF' clear heat retentive and anti-droplet polythene with a proportional 5 year life

guarantee against premature failure

Luminance 'Luminance THB AF' polythene with a proportional 5 year life guarantee. Combines the benefits ofLuminance and Politherm AF (i.e. Heat retentive, anti condensation) but also gives a diffused lightto reduce scorch).

Nicotarp all white woven polythene.60% shade value.

FR PVC Polybuild's flame retardant, reinforced PVC, is anti-wicking, high Ultra Violet treated andfungicide treated

Anti Hot SpotTape

self adhesive tape to be fitted to each hoop and ridge(s) of the structure to increase the life of theroof cladding by up to one year. (Tape lasts 6/9 years)