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Geosynthetic soil reinforcement product approvals

Published: | Category: Materials , Specifications | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors

Geosynthetic soil reinforcement materials employed in the reinforcement of soil structures (embankments, slopes, reinforced soil walls, etc) are materials with widely varying properties. Some geosynthetic materials have a relatively limited history of application and proven performance.

Where geosynthetic soil reinforcement is proposed to be used, the specific geosynthetic reinforcement material and supplier shall be subject to the approval of the road controlling authority.

Based upon submitted product information, testing results, and certification, Waka Kotahi accepts the following geosynthetics for use as soil reinforcement in accordance with Section 6 of the Waka Kotahi Bridge manual.

Note these acceptances apply only to the geosynthetics and not to any facings or connections, and only for products manufactured at the manufacturing facility stated on the Waka Kotahi approval certificate.

Both the manufacturing plant ISO certification and Waka Kotahi certificate dates need to be current at the time of use.

Design parameters given in the Waka Kotahi approval certificates shall be adopted in design.

Related guidance
Bridge manual (SM061)

Publication details

Summary of acceptances

Summary of accepted geosynthetic materials [PDF, 640 KB] in accordance with clause 6.8.1 of the 3rd Edition of the Waka Kotahi Bridge manual)

Certificates

Certificate No.

Product

Latest issue date

Expiry date

1

StrataGrid SGU and SGB series geogrid [PDF, 1.1 MB]

1 Jun 2023

13 July 2026

2 [EXPIRED]

 AceGrid geogrid

19 Nov 2014

18 Nov 2017

3 [EXPIRED]

ParaWeb series geogrid

[Note: see Cert. 13]

11 Nov 2020

9 Jan 2023

4

Tensar RE500 series uniaxial geogrid [PDF, 1.2 MB]

08 Mar 2024

29 Aug 2026

5

MiraGrid GX series geogrid [PDF, 1.1 MB]

08 Mar 2024

9 June 2025

6

Mirafi PET series geotextiles [PDF, 1.2 MB]

08 Mar 2024

31 July 2026

7

GeoTer F-PET series composite geotextiles [PDF, 1.2 MB]

12 May 2023

12 May 2026

8

GeoTer W-PET series geotextiles [PDF, 1.1 MB]

6 Apr 2023

12 May 2026

9

ParaGrid series geogrid [PDF, 1.4 MB]

28 Feb 2024

28 Feb 2027

10

ParaLink series uniaxial geogrid [PDF, 1.4 MB]

28 Feb 2024

28 Feb 2027

13

ParaWeb series geostrips [PDF, 1.4 MB]

[Note: see Certificate for technical information]

17 Oct 2023

02 Mar 2026

14

Miragrid XT series geogrid [PDF, 1.3 MB]

26 Feb 2024

08 Dec 2026

15

MacTex W2 series geotextiles [PDF, 1.1 MB]

24 Nov 2023

24 Nov 2026

16

StrataTex HSR series geotextiles [PDF, 1.1 MB]

09 Jan 2024

09 Jan 2027