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358 Mesh Fence for a Municipal Impound Yard in Groblersdal, South Africa: Panel and Gate Specifications

358 Mesh Fence for a Municipal Impound Yard in Groblersdal, South Africa: Panel and Gate Specifications

South African Municipal Infrastructure | Tender-Based Project Reference | Groblersdal, Limpopo

A municipal vehicle impound yard needs a perimeter that can protect stored vehicles while allowing authorized staff to manage daily access. The fence must also accommodate large vehicle entrances, because ordinary pedestrian access is not enough for this type of facility.

In Groblersdal, Limpopo, Elias Motsoaledi Local Municipality published a procurement specification for a Clear View fence and gate system at its impound yard. The document specifically identifies 358 mesh panels, steel T-posts, square posts and three 6-metre sliding gates.

The specified 358 Security Fence uses a narrow mesh opening with different wire diameters in the vertical and horizontal directions. The tender also includes detailed requirements for panel dimensions, galvanizing, coating performance and fixing accessories.

For fencing manufacturers and South African contractors, this project provides a useful example of how a municipal 358 fence package is described in a bill of quantities. It also highlights several details that buyers should clarify before comparing supplier quotations.

The Project and Its Intended Use

The proposed installation covers municipal properties ERF 833 and ERF 834 in the Groblersdal Industrial Area.

The facility operates as a vehicle impound yard. Its perimeter therefore needs to separate the storage area from surrounding industrial property while providing suitable openings for vehicle movement.

The municipal scope includes more than fence supply. It calls for:

  • Supply of the Clear View fence panels.
  • Delivery of steel posts and fixing accessories.
  • Site preparation and fence installation.
  • Supply and installation of sliding gates.
  • Gate motors and electrical connections.
  • Concrete work and associated installation materials.

This is an important distinction for procurement. A quotation covering only 358 mesh panels would not represent the full scope requested by the municipality.

How the Fence Layout Was Specified

The tender identifies three boundary measurements:

Boundary SectionSpecified LengthGate Provision
Front Boundary74 m2 × 6 m sliding gates
Right Boundary68 mNot separately listed
Rear Boundary77 m1 × 6 m sliding gate
Total of Listed Sections219 m3 sliding gates

The three vehicle entrances are a major part of the design. Together, they provide 18 metres of gate opening across the front and rear boundaries.

For an impound yard, the gate positions need to accommodate the movement of vehicles entering and leaving the premises. The fence panels beside each entrance must also connect correctly to the gate support posts.

The gate openings should therefore appear on the same drawing as the panel and post layout.

The 358 Mesh Panel: 2,100 mm High and 3,000 mm Wide

The tender specifies a 2,100 mm-high panel with a nominal width of 3,000 mm.

Its narrow rectangular mesh opening and different wire diameters in the two directions are important details. The panel does not use identical horizontal and vertical wires.

Panel SpecificationTender Requirement
Panel Height2,100 mm
Panel Width3,000 mm
Nominal Mesh Opening76 × 12.7 mm
Actual Mesh Opening74.9 × 12.67 mm
Vertical Wire Diameter4.0 mm
Horizontal Wire Diameter3.0 mm
Number of Bends4
Panel Weight35.13 kg
ColourBlack

The four horizontal reinforcing bends give the panel its formed structure. These bends also affect the panel’s overall geometry and the way it connects to the supporting posts.

For a replacement or alternative quotation, the manufacturer should confirm the bend positions and panel dimensions rather than rely only on the 358 mesh designation.

Another important point concerns the 2,100 mm height. This dimension sits between some commonly listed standard 358 panel heights. A supplier should confirm the actual custom manufacturing requirement rather than automatically substitute a 2,000 mm or 2,200 mm panel.

Buyers can review the available configurations on the BDFENCE Industrial Park 358 Fence product page.

Why the Tender Uses Different Wire Diameters

The specification uses 4.0 mm vertical wires and 3.0 mm horizontal wires.

This combination is different from a panel manufactured with 4.0 mm wire in both directions. The steel consumption and finished panel weight also change.

For procurement, the two wire dimensions should appear separately on the quotation.

A supplier should identify:

  • Vertical wire diameter.
  • Horizontal wire diameter.
  • Mesh opening and measurement method.
  • Panel dimensions.
  • Number and position of reinforcing bends.
  • Weld quality and supporting test information.

The tender also includes mechanical property requirements and weld test information. These requirements should be checked against the manufacturer’s available material and inspection records before a technical offer is accepted.

Using the correct wire dimensions is particularly important when the buyer compares different manufacturers. Two panels may look similar in photographs but contain different amounts of steel.

93 T-Posts and Four Square Posts: The Supporting Structure

The bill of quantities identifies two types of steel posts.

Post TypeBOQ SpecificationQuantity
Steel T-Post2,700 × 76 × 40 × 1.6 mm, pre-galvanized93 pcs
Square Post2,700 × 76 × 76 × 1.6 mm, hot-dip galvanized4 pcs

The T-posts form the main supporting arrangement for the standard fence sections. The square posts provide separate support at designated positions, including the gate-related structure shown in the BOQ.

However, the tender contains a small specification difference that bidders should clarify. Its separate T-post product description lists a 1.5 mm thickness, while the BOQ identifies 1.6 mm.

These figures should not be treated as interchangeable without confirmation from the municipality.

The same applies to the post finish. The T-post and square-post descriptions use different galvanizing references, so the supplier should quote each item according to the final approved schedule.

For other 358 installations, post section and wall thickness also need to match the panel height and fixing method. Our 358 Fence Post Size Guide explains these considerations in more detail.

Clamps and Screws: The Small Parts Behind the Panel Connections

The municipal BOQ lists a substantial quantity of fixing hardware.

AccessoryQuantity
Heavy-Duty Flat Clamps1,488 pcs
28 mm Long Technical Screws1,488 pcs
Spider Clamps64 pcs
28 mm Long Technical Screws for Spider Clamps64 pcs
Technical Screw Tool Bits2 pcs

These components secure the welded panels to their supporting posts.

The flat clamps and spider clamps have different connection roles. Therefore, the purchasing team should not combine them into one general accessory quantity when preparing the quotation.

Technical screws also need to match the specified clamp arrangement. A panel with the correct mesh dimensions can still create installation problems if the fixing components do not match the post profile.

For high-security applications, buyers should also check whether the approved fixing system requires anti-tamper hardware or another specified security arrangement.

Three 6-Metre Sliding Gates Complete the Entrance System

The gate schedule includes three sliding gates, each measuring 2.1 m high and 6 m wide.

Gate LocationQuantityOpening Width
Front Entrance2 sets6 m each
Rear Entrance1 set6 m
Total3 sets18 m combined opening

The tender describes the gates as SG-6000 sliding gate assemblies with 358-style mesh infill and a hot-dip galvanized finish.

It also includes rails, concrete bases and brackets for the three gate assemblies.

Gate manufacturing requires separate attention from ordinary fence panels. The frame must support the mesh infill, while the gate system needs suitable rollers, guides, support posts and locking arrangements.

Because the gates are 6 m wide, the supporting structure and opening movement need to follow the approved gate drawings.

The tender also includes gate motors and electrical connections in its scope of work. A complete supply quotation should therefore identify who supplies the motor, electrical components, installation and commissioning.

Black Finish and the Galvanizing Requirements

The specified fence color is black.

However, the tender does not treat appearance as the only surface requirement. It also lists protective coating and performance requirements for the galvanized wire.

Coating RequirementStated Tender Value
GalvanizingHot-dip galvanized zinc coating
Minimum Coating Thickness35 microns
Corrosion Resistance Test1,000 hours without red rust
Environmental Stress Test1,000 hours without cracking
Abrasion ResistanceLess than 61 mg loss using H18 wheels
Final ColourBlack

The document also refers to ASTM test methods for the coating and its performance.

For a manufacturer preparing a quotation, these requirements need to be reviewed separately. A standard galvanized 358 panel should not automatically be described as compliant with every listed coating test.

The supplier should identify the actual coating process, test records and any additional black finish included in the proposed system.

In particular, confirm whether the black finish applies to the mesh, T-posts, square posts, gates and exposed fixing components.

One Important BOQ Issue: Do the Panel Quantities Match the Site Lengths?

There is an interesting point in this tender that deserves attention before any supplier prepares a final price.

The three listed boundary sections total 219 m:

74 m + 68 m + 77 m = 219 m.

The three 6 m gate openings account for another 18 m. If these are the only listed boundary sections, the remaining fixed fence length would be approximately 201 m.

However, the BOQ lists 96 panels, each 3,000 mm wide. Their combined nominal width is:

96 × 3 m = 288 m.

That does not directly match the listed boundary dimensions.

The published document does not explain the difference. It may reflect additional fence sections, a revised layout or a quantity that needs correction. The tender drawing and final BOQ should therefore be checked before pricing.

This is a useful procurement lesson. Never calculate the final material order from the panel quantity alone when the site measurements are also available.

Ask the project authority to confirm the approved layout, the number of sides being fenced, the gate openings and the final panel schedule.

What the Matatiele and Groblersdal Projects Teach Fence Buyers

Municipal fencing procurement in South Africa shows why a product name alone is not enough to prepare a technical offer.

A 358 mesh description needs supporting information about the panel, posts, coating, clamps, gates and installation scope.

For a project similar to the Groblersdal impound yard, the buyer should prepare separate schedules for:

  • Standard 358 mesh panels.
  • T-posts and square posts.
  • Flat clamps and spider clamps.
  • Technical screws and installation tools.
  • Sliding gate frames and mesh infill.
  • Gate rails, concrete bases and brackets.
  • Gate motors and electrical work.
  • Galvanizing and final coating requirements.

This makes it easier to compare supplier quotations and identify missing items before the project begins.

How BDFENCE Can Support Similar South African 358 Projects

BDFENCE manufactures 358 welded security fencing for industrial facilities, warehouses, municipal infrastructure and other controlled-access applications.

Its published Industrial Park 358 Fence range includes:

  • 76.2 × 12.7 mm and 75 × 12 mm mesh options.
  • 4.0 × 3.0 mm and other wire combinations.
  • Different panel heights and widths.
  • Square, I-section and H-section posts.
  • Security clamps and fixing accessories.
  • Matching pedestrian and vehicle gates.
  • Green, grey and black finish options.

The Groblersdal tender calls for a 2,100 mm-high panel. BDFENCE’s published standard range lists several nearby heights, including 2,000 mm and 2,200 mm. A project requiring exactly 2,100 mm should therefore be reviewed as a custom manufacturing request.

Likewise, the tender’s T-post system should not be assumed equivalent to the square, I-section or H-section post systems in BDFENCE’s catalogue. The fixing arrangement and technical approval need to be checked before offering a substitute.

For more information about the supporting structure, see the 358 Fence Post Size Guide.

For installation-related details, read the 358 Fence Installation Guide.

BDFENCE also has a separate 2,400 m 358 Security Fence industrial project reference showing a coordinated supply package with mesh panels, posts, gates and security fittings.

For a South African project enquiry, send your drawings, BOQ and required specifications through Contact BDFENCE.

FAQ

Where was the municipal 358 fence project located?

The tender covered the impound yard at ERF 833 and ERF 834 in the Groblersdal Industrial Area, within Elias Motsoaledi Local Municipality, Limpopo, South Africa.

What size were the 358 mesh panels?

The detailed panel schedule specifies 2,100 mm height and 3,000 mm width, with approximately 76 × 12.7 mm nominal mesh openings, 4.0 mm vertical wire and 3.0 mm horizontal wire.

How many panels were included in the BOQ?

The bill of quantities lists 96 panels. However, the listed site lengths and panel quantities do not directly reconcile, so bidders should check the final layout and quantities before ordering.

How many sliding gates did the project require?

The tender specifies three 6 m sliding gates: two at the front entrance and one at the rear entrance.

What posts were specified?

The BOQ lists 93 T-posts measuring 2,700 × 76 × 40 × 1.6 mm and four square posts measuring 2,700 × 76 × 76 × 1.6 mm. The separate T-post description contains a different thickness reference that requires clarification.

Can BDFENCE manufacture 2,100 mm-high 358 panels?

BDFENCE publishes several standard panel heights, including 2,000 mm and 2,200 mm. A 2,100 mm requirement can be reviewed as a custom specification, subject to drawing and production confirmation.

Was this project completed by BDFENCE?

No. This article examines a public municipal tender as a South African project reference. The available documents do not establish that BDFENCE supplied the project or confirm the final contractor and completion status.

Contact BDFENCE

Hebei Bendin Industrial Technology Co., Ltd. (BDFENCE)

Planning a 358 mesh fencing project for a municipal facility, industrial yard or warehouse in South Africa? Send your technical drawings, panel schedule or BOQ for a quotation based on your required specifications.

WhatsApp: +86 18703287372

Email: info@bd-fence.com

Website: https://bd-fence.com/

Inquiry: Contact BDFENCE

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