ACO’s Polycrete® Pits are manufactured from polymer concrete, rather than traditional cement-based compositions used in standard concrete pits.
By replacing cement binder with polymer resins, Polycrete® Pits achieve higher mechanical strengths, zero water absorption and improved chemical resistance, making them ideal as electrical and communications enclosures.
Lighter and therefore less cumbersome than conventional concrete pits, only large Polycrete® Pits require special lifting equipment.
Pit configuration and depth options
Polycrete® Pits are available in a wide range of standard sizes to suit different pit volumes and site requirements. Optional risers can be used to increase pit depth where required, allowing greater flexibility during design and installation. A maximum of two risers per cable pit is recommended.
Access, covers and surface integration
Polycrete® Pits are compatible with a broad selection of lids and solid top and recessed access covers. This allows pits to be specified for a range of surface finishes, including concrete, paved and tiled pavements, while maintaining safe and easy access. Recessed cover options support visual surface continuity in public and trafficable areas.
Installation considerations
Side walls are designed to allow conduit entry, with penetrations able to be formed where required to suit site-specific layouts. Wet cutting is recommended for clean conduit entry, and ACO technical guidance is available to advise on recommended pit sizes for various conduit configurations.
Technical support and enquiries
ACO provides technical assistance to support selection, configuration and access cover choice during the design process. For project-specific guidance or to learn more about the advantages of polymer concrete pits, contact ACO’s technical team today.

Polycrete® Pits - polymer concrete enclosures

Features & benefits
| Ductile iron Rhinocast® solid top cover (AS 3996 Class B) AS/NZS 4586 slip resistance rating: R10 Ductile iron Rhinocast® recessed cover (AS 3996 Class B). |
|
| Ductile iron Rhinocast® solid top cover (AS 3996 Class D) AS/NZS 4586 slip resistance rating: R10 Ductile iron Rhinocast® recessed cover (AS 3996 Class D or G) Iron frame - external dim. |
|
| Steel Urbanfil® recessed cover (AS 3996 Class B). | |
| Steel Pavermate® recessed cover (AS 3996 Class B). | |
| Steel lid (AS 3996 Class B) AS/NZS 4586 slip resistance rating: R10. IP4X (AS 60529) protection against ingress of foreign objects if fitted with universal plug. | |
| Polymer concrete lid (AS 3996 Class A) AS/NZS 4586 slip resistance rating: R10. IP4X (AS 60529) protection against ingress of foreign objects if fitted with universal plug. | |
| Holesaw guides for conduit entry - holes can be cut anywhere on side walls. The maximum number of holes recommended per pit is limited by conduit quantity and size. For more information, contact ACO. |
Polycrete® Pits - range parts lists


| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 200 | 200 | 150 | ||||||
|---|---|---|---|---|---|---|---|---|

| Nominal opening (mm) | Nominal depth (mm) | |||||||
|---|---|---|---|---|---|---|---|---|
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 353 | 353 | 444 | 744 | 1044 | ||||

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 33 polymer concrete pit | 75244 | 444 | 23.4 | ||
| Type 33 polymer concrete riser (adds 300mm to pit depth) | 75265 | 320 | 17.6 |
| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 511 | 511 | 600 | 900 | 1200 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 45 polymer concrete pit | 75362 | 600 | 47.0 | ||
| Type 45 polymer concrete riser (adds 300mm to pit depth) | 75389 | 350 | 27.3 |
| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 663 | 663 | 618 | 918 | 1218 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 66 polymer concrete pit | 75105 | 618 | 72.2 | ||
| Type 66 polymer concrete riser (adds 300mm to pit depth) | 75126 | 350 | 38.3 |
| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 663 | 663 | 918 | 1218 | 1518 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 66H polymer concrete pit | 75226 | 918 | 90.5 | ||
| Type 66 polymer concrete riser (adds 300mm to pit depth) | 75126 | 350 | 38.3 |
| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 990 | 990 | 582 | 882 | 1182 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 99 polymer concrete pit | 75489 | 582 | 135.4 | ||
| Type 99 polymer concrete riser (adds 300mm to pit depth) | 75500 | 350 | 70.2 |
1. This size comes with a T-Frame

| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 515 | 228 | 436 | ||||||
|---|---|---|---|---|---|---|---|---|

| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 652 | 303 | 743 | ||||||
|---|---|---|---|---|---|---|---|---|

| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 978 | 510 | 588 | 888 | 1188 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 95 polymer concrete pit | 74845 | 588 | 80.0 | ||
| Type 95 polymer concrete riser (adds 300mm to pit depth) | 74861 | 350 | 44.2 |
| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 983 | 683 | 618 | 918 | 1218 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 96 polymer concrete pit | 74429 | 618 | 92.4 | ||
| Type 96 polymer concrete riser (adds 300mm to pit depth) | 74463 | 350 | 50.1 |
| Nominal opening (mm) | Nominal depth (mm) | |||||||
| Length | Width | No Riser | 1 Riser | 2 Risers | Pit with Lid | Pit with Riser & Lid | Pit with Access Cover | Pit with Riser & Access Cover |
| 1351 | 541 | 902 | 1202 | 1502 | ||||
|---|---|---|---|---|---|---|---|---|

| Part No | Depth (mm) | Weight (kg) | JPG | DWG | |
|---|---|---|---|---|---|
| Type 8 polymer concrete pit | 74991 | 902 | 154.5 | ||
| Type 8 polymer concrete riser (adds 300mm to pit depth) | 73419 | 350 | 58.7 |

| Part No | Weight (kg) | JPG | |
|---|---|---|---|
| Brass plate - Electricity | 77416 | 0.05 | |
| Brass plate - Communications | 77402 | 0.05 | |
| Brass plate - Gas | 77420 | 0.05 |







