Multiplate® structures were developed by Armco, in the 1930's to increase the diameter range of corrugated steel pipes. Multiplate, because of it's strong, fully componentized, easy to transport and assemble properties fits well into the PNG Infrastructure, Mining & Civil Engineering projects
Now manufactured in Townsville, only 6 days sailing away, to Australian Standards using 200mm x 55 mm corrugations.
The hot dip galvanised structures are available from Markham Culverts Ltd. Lae, PNG.
Multiplate® pipes & related profiles fully conform with AS/ NZS 2041
Class 2 structures and P.N.G. DOT & W specifications
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Circular Multiplate Pipe normally available from stock held in Lae (Subject to Prior Sale)
Cover Limits in metres for Multiplate Pipe Class 2 Steel Pipes Ref Table E2.1 AS / NZS 2041:1998 T44 Highway Loading (Min Cover = 0.6m)
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Nom Dia (mm) |
Profile No. |
Steel Thickness
(10 Bolts /m) |
Maximum Height of Cover (m) |
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2,100 |
28P |
3.0 mm |
21.2 |
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2,400 |
32P |
3.0 mm |
18.4 |
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2,700 |
36P |
3.0 mm |
16.3 |
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3,000 |
40P |
3.0 mm |
14.6 |
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3,600 |
48P |
3.0 mm |
12.0 |
Contact us for details of the full Range of profiles (Circular, elliptical, arches, pipe arches & underpass) in gauges and spans allowing up to 8.5m Dia / span and heavier gauges & / or bolt seams for special structural applications.
Download
Buried
Corrugated Metal Structures Brochure (2,990 KB) - 48 pages
| Superspan® Structures: Superspan® is a large span Multiplate® structure which benefits from a thrust beam on each side allowing efficient compaction and arch load distribution to the fill. Different profiles, heavy / special loads & spans of up to 18m are permissible.
Wards Road, Port Moresby, NCDC Daulo Pass - Eastern Highlands Download
For Larger sizes, box culverts & other profiles please visit the SuperCor® page
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Special Coatings - To provide extended life & further protection in saline, swampy and aggressive condition AS/NZS 2041:1998 advises the use of additional protective coatings. The main method of extending culvert life employed by Markham Culverts is to apply a Duplex Coating of Epoxy in the clean environment of the plant on fresh product.
The Epoxy coating can be applied in various thicknesses with lighter coatings on the outside & obvert, concentrating heavier coatings on the inside of the invert . This provides a range of protection thicknesses economically balanced to the location / environment requirements. Typical thicknesses 125 Microns to 250 Microns DFT Duplex Epoxy is available as an additional coating on our Nestable, Multiplate®, Superspan® & SuperCor® ranges. Typical Costs add 20% to 40 % on the cost of the pipe
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Epoxy coating is a proven coating, having been used worldwide for
culvert protection for over 60 years.|
Markham Culverts is the exclusive distributor in Papua New Guinea for Multiplate®, Superspan® & Super Cor® manufactured by Atlantic Civil Products an ISO 9001 QA Certified company, located in Townsville, QLD. Australia Email : mculverts@markham.com.pg or sales@atlanticcivil.com.au Please note: These are buried Earth / Steel Structures requiring quality backfill materials and practices - please contact Atlantic Civil Products or Markham Culverts for further details |
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E-Mail: mculverts@markham.com.pg
Helping Civil Engineers Build a Better PNG.