Compliance guide
SANS 1186-1 safety signage for construction and mining sites
A practical guide to compliant safety signage on construction and mining sites in Pretoria and the Gauteng industrial nodes — what the standard requires, which mandatory signs (MV 1 – MV 27) apply, and how to pick durable materials for local site conditions.
What SANS 1186-1 covers
SANS 1186-1 is the South African National Standard for symbolic safety signs. It defines the shape, colour, pictogram and proportion rules for four sign categories used on any workplace — prohibition, mandatory, warning and safe-condition — and is the standard the DoEL and mine health & safety inspectorate reference during site audits.
On a construction or mining site in Gauteng, the mandatory (blue-disc) family is the largest single group, because it covers the PPE and behavioural instructions issued at site entrances, work zones and welfare facilities.
Mandatory signs on a Gauteng construction site
The 27 mandatory signs below are the ones Naude Signs Pta manufactures most often for sites in Pretoria, Centurion, Rosslyn, Silverton, Rustenburg and the Mpumalanga mining belt. Contractors typically bundle them into a site-entrance board plus zone- specific boards for scaffolding, hot works, confined-space entry and vehicle traffic areas.
- MV 1 — Eye protection shall be worn
- MV 2 — Head protection shall be worn
- MV 3 — Hearing protection shall be worn
- MV 4 — Respiratory protection shall be worn
- MV 5 — Hand protection shall be worn
- MV 6 — Foot protection shall be worn
- MV 7 — Protective clothing shall be worn
- MV 8 — Face protection shall be worn
- MV 9 — Safety harness shall be worn
- MV 10 — High-visibility clothing shall be worn
- MV 11 — Wash hands
- MV 12 — General mandatory action
- MV 13 — Pedestrians shall use this route
- MV 14 — Use handrail
- MV 15 — Beware of ledge
- MV 16 — Cyclists dismount
- MV 17 — Sound horn
- MV 18 — Secure gas cylinders
- MV 19 — Isolate before carrying out maintenance or repair
- MV 20 — Refer to instruction manual
- MV 21 — Disconnect before carrying out maintenance or repair
- MV 22 — Ventilate
- MV 23 — Wear a face shield
- MV 24 — Wear a welding mask
- MV 25 — Wear anti-static footwear
- MV 26 — Wear a life jacket
- MV 27 — Full body harness with lanyard shall be worn
Choosing a substrate: Chromadek vs ABS vs reflective
Highveld sun, summer thunderstorms and site dust are hard on signage. Substrate choice usually decides whether a sign lasts one project or five.
Chromadek (pre-painted galvanised steel)
First choice for permanent site-entrance and gatehouse boards. Rigid, UV-stable, and welds onto standard sign frames. Ideal for larger boards (900 × 600 mm and up) at Rustenburg and Emalahleni mine gates where wind loading matters.
ABS plastic
Lightweight, screw-fix, shatter-resistant. Best inside warehouses, workshops, welfare containers and scaffolding zones where boards need to be repositioned as the site progresses.
Reflective vinyl (Class 1 / Class 2)
Required for roadwork boards, traffic-accommodation signs and any sign that must be legible under vehicle headlights — for example the Stop / Go boards and “End — Thank You” boards used on Gauteng road-construction projects.
Sizing and placement
SANS 1186-1 sets viewing-distance rules. A safe rule of thumb: for every 1 m of expected viewing distance, add ~25 mm of pictogram diameter. So a mandatory disc read from 8 m away wants a ~200 mm pictogram — usually 300 × 300 mm on the finished board once text and border are added.
Site-entrance boards must be visible before the access gate, at a height clear of pedestrians and vehicles (typically 1.8 – 2.2 m to the sign centre). Zone-specific boards go at each hazard boundary, not only at the perimeter.
Common site-entrance pack
A typical Gauteng construction site entrance from Naude Signs Pta includes: hard hat (MV 2), safety boots (MV 6), high-visibility clothing (MV 10), eye protection (MV 1), hearing protection (MV 3), plus a warning board and the contractor’s site rules panel. Mining sites usually add MV 4 (respiratory), MV 9 (harness), and MV 27 (full body harness with lanyard) depending on the shaft or plant conditions.
Need a compliant sign pack?
We manufacture SANS 1186-1 mandatory, prohibition, warning and safe-condition signs at our Sinoville workshop and deliver across Gauteng, Mpumalanga and North West. Quotes back within 24 hours on business days.