- A decorative pole is usually a 20 to 30 year asset, so the specification matters more than the purchase price.
- IS 1944 groups roads into lighting classes. Group A1 roads need an average of about 30 lux; Group B2 roads about 4 lux.
- The IP rating applies to the junction box and luminaire, not the pole shaft.
- Basic wind speeds in IS 875 Part 3 range from 33 m/s to 55 m/s depending on location.
- ‘GI pole’ usually means a mild steel pole that has been hot-dip galvanized. It is a coating, not a different metal.
Why the pole decision deserves more time than it gets
On most projects we see, the LED wattage gets discussed for weeks and the pole gets picked from a WhatsApp photo. That is backwards. The luminaire will probably be changed once or twice in the pole's life. The pole, its foundation and its coating stay for 20 years or more.
A wrong pole shows up slowly. Rust at the base plate in year four. A door that no longer shuts on the junction box. A shaft that sways in the first strong pre-monsoon storm. None of these are cheap to fix once the road is finished and the footpath is tiled.
So here is the order we suggest, the same order our engineers use when a municipal or township enquiry comes in.
Step 1: Define where the pole goes and what it lights
Write this down before you open any catalogue: road or space type, its width, whether people walk there at night, and whether the area has any heritage or design-review rules. Everything else follows from these four answers.
| Application | Typical mounting height | Arm configuration | What usually matters most |
|---|---|---|---|
| Park path, jogging track, garden | 3 to 4.5 m | Post-top lantern or single arm | Glare control, warm light, vandal resistance |
| Colony or society internal road | 5 to 6 m | Single arm | Even light on the road, low cost per pole |
| Market street, commercial frontage | 6 to 8 m | Single or double arm | Brighter light, durable finish, easy maintenance |
| Township or city main road | 7 to 9 m | Double arm in median or single arm both sides | IS 1944 class compliance, wind design |
| Arterial road, highway median | 9 to 12 m | Double arm, longer outreach | Structural design, foundation, lux uniformity |
| Heritage precinct, temple approach | 3 to 6 m | Lantern or multi-arm decorative | Style approval, finish colour, low glare |
Step 2: Match the lighting class in IS 1944
IS 1944 is the Indian code of practice for lighting public thoroughfares. It sorts roads into groups and sets an average illuminance and a uniformity ratio for each. Municipal engineers use it when preparing a BOQ, and it is the fairest way to compare two suppliers' lighting designs.
| IS 1944 group | Road type (summary) | Average illuminance | Uniformity (min/avg) |
|---|---|---|---|
| A1 | Important traffic routes with fast traffic | 30 lux | 0.4 |
| A2 | Other main roads with mixed traffic | 15 lux | 0.4 |
| B1 | Secondary roads with considerable traffic | 8 lux | 0.3 |
| B2 | Secondary roads with light traffic | 4 lux | 0.3 |
Parks, plazas and footpaths are not really covered by these classes. For those, designers usually work from comfort and safety: enough light to recognise a face at a few metres, no harsh glare, and a warm colour temperature (2700K to 3000K) that feels right in the evening.
Spacing rule of thumb: on a straight road, pole spacing typically falls between 3 and 4 times the mounting height. A 6 m pole will usually land 18 to 24 m apart. A photometric layout (DIALux or similar) from the supplier should confirm this before you order.
Step 3: Choose the material and the standard behind it
This is where most confusion comes from. Buyers often compare ‘GI poles’ and ‘MS poles’ as if they were different metals. In practice, almost all steel decorative poles are mild steel. The question is how the steel is protected.
| Material / build | Relevant standard | Corrosion protection | Where it fits best | Watch out for |
|---|---|---|---|---|
| Hot-dip galvanized steel, octagonal or conical (fabricated from plate) | Steel to IS 2062; galvanizing to IS 4759 | Zinc coating inside and outside, plus optional powder coat | Most township, municipal and smart-city roads | Ask for galvanizing thickness test report, not only a certificate |
| Swaged tubular steel pole | IS 2713 (Parts 1 to 3) | Galvanized or painted | Budget colony and village roads, utility-style lighting | Painted-only poles need repainting every few years |
| Painted mild steel (no galvanizing) | IS 2062 | Primer and enamel only | Temporary or indoor-covered use | Not recommended for any outdoor public project |
| Cast iron | IS 210 (grey iron castings) | Inherent corrosion resistance plus paint | Heritage zones, colonial streetscapes | Very heavy, brittle under impact, needs careful handling |
| Cast aluminium | Relevant BIS aluminium alloy casting standard | Naturally corrosion resistant, powder coated | Coastal promenades, lightweight lanterns and bases | Higher cost per metre; check wall thickness and wind design |
Step 4: Specify IP (and IK) for the electrical parts
The IP code comes from IEC 60529 and tells you how well an enclosure keeps out dust and water. On a street pole it applies to the luminaire and the junction box at the base. The shaft itself has no IP rating.
- IP65: dust-tight, protected against water jets. Fine for most inland cities such as Nashik, Pune, Nagpur or Aurangabad.
- IP66: protected against powerful water jets. Specify this for the Konkan belt, Mumbai, Goa, and any lake or riverfront.
- IP67: protected against short temporary immersion. Useful only for parts that could actually sit under water, such as a base junction box in a flood-prone low spot.
- IK rating (IEC 62262): impact resistance. IK08 or better is sensible for luminaires within reach of the public.
Our full IP rating guide goes deeper into test conditions and site choice.
Step 5: Check the wind design against IS 875 Part 3
IS 875 Part 3 lists a basic wind speed for every Indian city, from 33 m/s up to 55 m/s. The pole's design calculation should use your city's value, plus the terrain category and the actual area of the luminaire and any decorative brackets, banners or signage you plan to hang.
| City | Basic wind speed (IS 875 Part 3) |
|---|---|
| Bengaluru | 33 m/s |
| Pune | 39 m/s |
| Ahmedabad | 39 m/s |
| Mumbai | 44 m/s |
| Nagpur | 44 m/s |
| Delhi | 47 m/s |
| Chennai | 50 m/s |
| Kolkata | 50 m/s |
Banners are the hidden risk. A 1 m × 2 m festival banner on a 6 m pole can add more wind load than the luminaire itself. If the client plans to use the poles for Ganpati or Diwali banners, tell the supplier at the design stage.
Step 6: Finish and colour
For galvanized poles, the best-performing finish is a duplex system: hot-dip galvanizing first, then a polyester powder coat (commonly 60 to 80 microns). The zinc protects the steel, the powder coat protects the zinc and gives the colour.
- Municipal roads: black, dark green or grey are the usual picks.
- Heritage precincts: antique bronze, dark brown, or black with gold detailing, subject to local approval.
- Modern townships and smart roads: RAL 7016 (anthracite grey) or RAL 9005 (jet black) are popular.
Always write the RAL code in the purchase order. ‘Dark grey’ means ten different things to ten painters.
Procurement checklist
- Pole material, fabrication standard and steel grade (for example IS 2062 E250).
- Height, base and top outer diameter, wall thickness, number of sections.
- Galvanizing standard (IS 4759) and the minimum coating thickness, with a test report.
- Powder coat thickness and RAL code.
- Basic wind speed and terrain category used in the design calculation.
- Foundation drawing, anchor bolt size, grade and template.
- IP and IK rating of luminaire and junction box, with test reports from an accredited lab.
- Luminaire compliance with IS 10322 (Part 5/Sec 3) and BIS registration where applicable.
- Photometric layout showing average lux and uniformity for your road.
- GST invoice with HSN code, warranty terms and spare parts availability.
References
- IS 1944 (Parts 1 & 2): Code of Practice for Lighting of Public Thoroughfares — Bureau of Indian Standards
- IS 875 (Part 3): 2015 — Design Loads (Other than Earthquake) for Buildings and Structures: Wind Loads — Bureau of Indian Standards
- IS 2713 (Parts 1 to 3): 1980 — Tubular Steel Poles for Overhead Power Lines (BIS summary note) — Bureau of Indian Standards
- IS 2062 — Hot Rolled Medium and High Tensile Structural Steel — Bureau of Indian Standards
- IS 4759 — Hot-Dip Zinc Coatings on Structural Steel and Other Allied Products — Bureau of Indian Standards
- IEC 60529 — Degrees of Protection Provided by Enclosures (IP Code); Indian adoption IS/IEC 60529 — International Electrotechnical Commission / BIS
- IEC 62262 — Degrees of Protection Against External Mechanical Impacts (IK Code) — International Electrotechnical Commission
- IS 10322 (Part 5/Section 3) — Luminaires for Road and Street Lighting — Bureau of Indian Standards
Frequently Asked Questions
What is the standard pole height for decorative street lights in India?
There is no single standard height. It depends on road width and the IS 1944 lighting class. In practice, 3 to 4.5 m suits park paths, 5 to 6 m suits colony roads, 7 to 9 m suits main roads, and 9 to 12 m suits arterial roads.
Is a GI pole different from an MS pole?
Usually not in the base metal. Both are generally mild steel. A GI pole has been hot-dip galvanized for corrosion protection, which is why it lasts much longer outdoors than a painted MS pole.
Which Indian standard applies to steel street light poles?
Swaged tubular poles are covered by IS 2713 (Parts 1 to 3). Fabricated octagonal or conical decorative poles are usually made from IS 2062 structural steel and galvanized to IS 4759. The wind design follows IS 875 Part 3.
How do I confirm a pole's wind rating?
Ask the supplier for the structural calculation sheet showing the basic wind speed from IS 875 Part 3 for your city, the terrain category, and the luminaire and bracket areas used. For government tenders this sheet is often requested with the technical bid.
गाँव की सड़क के लिए कितनी ऊँचाई का पोल लें?
आम तौर पर 5 से 6 मीटर का सिंगल-आर्म पोल गाँव या कॉलोनी की सड़क के लिए काफी होता है। दो पोल के बीच लगभग 18 से 24 मीटर की दूरी रखी जाती है, पर सप्लायर से लाइटिंग लेआउट ज़रूर माँगें।
किनारी भागात कोणता IP रेटिंग घ्यावा?
कोकण, मुंबई किंवा तलाव-नदीकाठच्या भागात ल्युमिनेअर आणि जंक्शन बॉक्ससाठी किमान IP66 घ्यावा. पोल गॅल्वनाइज्ड आणि वर पावडर कोट केलेला असावा.
