Construction of gabion structures at lowveld national botanical garden, nelspruit – sanbi G584/2026

The tender is for the construction of gabion structures at the Lowveld National Botanical Garden in Nelspruit. The works include site clearance, earthworks, construction of gabion baskets and Reno mattresses, and associated preliminary and general items.

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No eligibility criteria specified

The works comprise the construction of gabion structures at the Lowveld National Botanical Garden in Nelspruit. The bill of quantities covers:

• Site clearance: clearing and grubbing the stream bed and sides over 108 m².
• Earthworks (small works): excavating in all materials and backfilling or placing in embankment and compacting (38.88 m³); importing material from commercial sources to complete embankment (12.96 m³).
• Gabions and Reno mattresses: dismantling existing gabions, piling stones for future use, and transporting gabion cages to the disposal site (68 m³); importing G5 material from commercial sources to complete embankment (10 m³); soilcrete to edge of slopes at top of gabion structures (10 m³); surface preparation for bedding of gabions (108 m²).
• Construct gabions using galvanised PVC coated wire mesh: 108 baskets of 1 x 1 x 0.5 m (Class A galvanised hexagonal mesh) filled with champagne gabion rocks (100–250 mm) at front rows (54 m³); 108 baskets of 0.5 x 0.5 x 1 m filled with existing gabion rocks at back rows (27 m³); 33 baskets of 1 x 1 x 1 m filled with existing gabion rocks (33 m³); 33 baskets of 1.5 x 1 x 1 m filled with existing gabion rocks (50 m³); Reno mattresses of 1 x 1 x 0.3 m (32 m³).
• Extra over items for selected stone on wall face facing stream (1 m²).
• Geotextile Bidum A5 (or similar) below mattresses and baskets (108 m²) and behind gabion wall (108 m²).
• Surveying: conduct survey in terms of the Land Survey Act, peg out site boundary, and produce construction and as-built drawings.
• Preliminary and general items include contractual requirements, facilities for contractor (office, storage sheds, ablution, tools, water, power, communications, camp area), environmental management programme, health and safety plan, removal of site establishment, time-related items (contractual requirements, operate and maintain facilities, supervision for duration of contract), and detection and relocation of existing services.

Pricing is on the bill of quantities. Section A covers preliminary and general items (fixed charge and time-related). Section B covers gabions and mattresses. The summary includes contingencies at 10% and VAT at 15%. Provisional sums are provided for the Environmental Assessment Professional (R 180,000.00) and the Employer's OHS Agent (R 50,000.00), with handling costs and profit to be priced as a percentage.

Pricing is to be submitted on the bill of quantities (BoQ) provided. The BoQ is structured in sections:

• Section A: Preliminary and General (fixed charge items and time-related items).
• Section B: Gabions and Mattresses.
• Summary of schedules: subtotal A, contingencies at 10%, subtotal B, VAT at 15%, total carried to form of offer.
• The BoQ includes provisional sums: Environmental Assessment Professional (R 180,000.00) and Employer's Occupational Health & Safety Agent (R 50,000.00). Handling costs and profit on these provisional sums are to be priced as a percentage.
• Rates are to be entered in the 'RATE' column; the 'AMOUNT' column is calculated from quantity times rate.
• The contract period appears to be 2 months (time-related items are for 2 months).

The bill of quantities references compliance with the Occupational Health and Safety Act and the Construction Regulations, and preparation of a Health and Safety Plan. The Environmental Management Programme must be complied with. No other compliance requirements (e.g., CSD, tax, B-BBEE, CIDB) are stated in the available document.

The contractor must comply with the Occupational Health and Safety Act and the Construction Regulations. A Health and Safety Plan must be prepared; the cost of initial compliance and plan preparation is to be covered in the fixed charge item. The employer's Occupational Health & Safety Agent is a provisional sum of R 50,000.00.

The contractor must comply with the Environmental Management Plan. The rate for the Environmental Management Programme must cover all costs necessary for compliance. An Environmental Assessment Professional is a provisional sum of R 180,000.00.

Environmental Management Programme compliance is required; the rate for this item shall cover all costs necessary to comply generally with the Environmental Management Plan.

Scope: Construction of gabion structures at the Lowveld National Botanical Garden in Nelspruit.

Preliminary & General (Section A):

• Contractual requirements (fixed charge).
• Contractor facilities: office and storage sheds, ablution and latrine facilities, tools and equipment, water supplies, electric power and communications, camp area (all fixed charge).
• Environmental Management Programme compliance (fixed charge, covers all costs to comply with the Environmental Management Plan).
• Environmental Assessment Professional: provisional cost sum of R180 000 with handling costs and profit percentage applied.
• Health & Safety plan: fixed charge covering initial compliance with the Occupational Health and Safety Act and Construction Regulations, and preparation of a Health and Safety Plan.
• Employer's Occupational Health & Safety Agent: provisional cost sum of R50 000 with handling costs and profit percentage applied.
• Detection and relocation of existing services as directed by the employer (fixed charge).
• Removal of site establishment on completion (fixed charge).
• Time-related items for a 2-month contract period: contractual requirements, operation and maintenance of facilities on site, supervision.

Gabions & Mattresses (Section B):

• Surveying: conduct survey in terms of the Land Survey Act, peg out site boundary, produce construction drawing and as-built drawing (fixed charge).
• Site clearance: clear and grub stream bed and sides (108 m²).
• Earthworks (small works): excavate in all materials and backfill or place in embankment and compact (38.88 m³); import material from commercial sources to complete embankment (12.96 m³).
• Dismantle existing gabions, pile stones for future use, transport gabion cages to disposal site (68 m³).
• Import G5 material from commercial sources to complete embankment (10 m³).
• Soilcrete to edge of slopes at top of gabion structures (10 m³).
• Surface preparation for bedding of gabions (108 m²).
• Construct gabions using galvanised PVC coated wire mesh, Class A galvanised hexagonal mesh units, filled with champagne gabion rocks (front rows) or existing gabion rocks (back rows), stone size 100 mm to 250 mm, neatly packed:

• 108 units of 1 x 1 x 0.5 m baskets (54 m³).

• 108 units of 0.5 x 0.5 x 1 m baskets (27 m³).

• 33 units of 1 x 1 x 1 m baskets (33 m³).

• 33 units of 1.5 x 1 x 1 m baskets (49.5 m³).

• Reno mattresses: 108 units of 1 x 1 x 0.3 m (32 m³).
• Extra over for selected stone on wall face facing stream (1 m²).
• Geotextile Bidum A5 (or similar): below mattress & baskets (108 m²); behind gabions wall (108 m²).

Summary: Section A (Preliminary & General) + Section B (Gabions & Mattresses) with 10% contingencies and 15% VAT carried to Form of Offer.

Pricing format: Bill of Quantities with fixed charge items, time-related items (2-month duration), provisional cost sums (Environmental Assessment Professional R180 000; Employer's OHS Agent R50 000), and measured rates for earthworks, gabions, mattresses, geotextile. Handling costs and profit percentages apply to provisional cost sums. Summary includes 10% contingencies and 15% VAT. No bond, guarantee, or insurance requirements stated in the extracted document.

Environmental Management Programme compliance required (costs covered in fixed charge item). Health & Safety plan required per Occupational Health and Safety Act and Construction Regulations (costs covered in fixed charge item). No other compliance requirements (CSD, tax, B-BBEE, CIDB, CIPC, professional registrations, local content) stated in the extracted document.