Service 02 — Design, build & raise

Guyed lattice, to 170 metres.

VOTC designs, manufactures, instruments, raises and maintains guyed lattice meteorological masts under one accountable scope — from the first structural calculation to a commissioned, signal-live tower with a complete records trail.

Commission a mast See how it’s raised Operation & maintenance

In-house structural · DIN 3060 · SS316 · own certified crews

Reference 7.7 m/s

A VOTC red-and-white guyed lattice met mast standing to full height against a blue sky, instrument booms at several levels and guy wires radiating out
Field record Guyed lattice · red & white · booms at level
Siemens Gamesa ReNew Adani DNV Vestas Greenko Engie Azure Power Suzlon Tata Power CleanMax AMPYR Deutsche WindGuard JSW Energy GE Enel Vena Energy EDF Inox Wind BrightNight UL Solutions Hero Future Energies Acciona Energía Envision BluPine Energy Torrent Power Juniper Green Energy Alfanar Senvion Blueleaf Energy Vibrant Energy Zelestra NISE Hinduja Renewables Sprng Energy AMPIN Energy UPC Renewables Levanta Renewables Solarpack Fourth Partner Energy WEG
170 mMax height
4Witnessed gates
120+Masts maintained
16Countries
02 · Quality

Raise it yourself — through the four gates

Erection is a sequence of witnessed hold points — work stops at each gate until it is verified. Drag the build, or let it run: foundation, steel, tension, signal.

ERECTION SEQUENCE · LIVE 3D · DRAG TO ORBIT
The real 160 m configuration · guys attach at 16 levels · symbols NTS
0%
  1. H1

    Foundation & base

    Pending

  2. H2

    Every guy level

    Pending

  3. H3

    Tension & verticality

    Pending

  4. H4

    Commission & 7-day check

    Pending

Work stops at each gate until it is verified — and the client can witness every one.

Measurement profile

Measured at every level

One tower carries the whole wind profile — first-class cup anemometers, vanes and temperature & humidity sensors stepped from 40 m to 170 m, each held clear of the structure and read where the turbine sees the wind.

8 measurement levels · redundant at hub · IEC 61400-12-1 layout

Elevation of the 170 metre guyed lattice mast showing instrument levels — cup anemometers, wind vanes and temperature and humidity sensors stepped from 40 m to 170 m, the guy system and the top beacon
03 · The challenge

What a 170 m tower must survive

A guyed lattice is light and slender — which is exactly why the engineering has to be right. Three things decide whether a mast measures true for a decade.

Wind

Load, carried to ground

At 170 m the wind load is real. A slender lattice presents little to it, and the guy system carries what remains down to concrete ground stations — so the steel stays light.

Guyed at every level

Movement

Barely a tremor

DIN 3060 rope tensioned to spec at every guy level keeps deflection tiny. A mast that sways smears the very measurement it exists to take.

DIN 3060 · SS316

Verticality

Dead vertical

Checked plumb to close tolerance at hold point H3. A tower that leans reads the wrong wind — so verticality is witnessed, not assumed.

Verified · H3
THE FORCES · LIVE 3D · DRAG TO ORBIT
Deflection exaggerated for visibility · loads scale with v² · windward guys redden under strain, leeward guys slacken
12 m/s
  1. TIP

    Deflection at 160 m

    —

  2. GUY

    Windward rope load

    —

  3. DRAG

    Wind force on the steel

    —

Indicative ratios — loads scale with the square of wind speed. The real numbers come from the structural design for your site’s wind class.

04 · Specification

The mast, specified

One engineered configuration, adapted to the exposure and soil of each site. This is the reference build.

Reference specification Guyed lattice met mast — standard build
Doc
VOT-MM-REF
Rev
0A
Scale
NTS
0 50 100 150 170 M AGL 40 M 4 GUY LV 6 ANCHORS 60 M 6 GUY LV 6 ANCHORS 80 M 8 GUY LV 6 ANCHORS 100 M 10 GUY LV 6 or 9 ANCHORS 120 M 12 GUY LV 9 ANCHORS 140 M 14 GUY LV 9 ANCHORS 160 M 16 GUY LV 9 ANCHORS 170 M 17 GUY LV 9 ANCHORS EIGHT STANDARD HEIGHTS · ONE ENGINEERING METHOD
Eight standard heights · 40 – 170 m — hover a mast for its footprint
StructureGuyed lattice tower, to 170 m
Guy ropeDIN 3060 galvanised steel wire rope
HardwareSS316 stainless turnbuckles & fittings
FoundationReinforced concrete, engineered per soil
MarkingAviation red & white, with obstruction beacon
SensorsClass instruments, IEC-aligned layout
SystemsISO 9001 · 14001 · 45001
GatesH1 · H2 · H3 · H4, witnessed
05 · The drawing

The GA drawing, alive

Every mast ships with its general-arrangement drawing — the elevation that fixes what stands at every height. Click a level to read what is mounted there, and why.

161.2 m OVERALL +161.2 +160.0 +155.0 +140.0 +135.0 +120.0 +115.0 +100.0 +080.0 +051.0 +022.0 +015.0 VOTC · GENERAL ARRANGEMENT VOT-WRA-160-GA · REV 0A · NTS IEC 61400-12-1 · SENSOR LAYOUT
VOT-WRA-160-GA elevation · GA simplified — 16 guy levels in the field · interactive — click or tab through the levels

Level · 160.0 m

Primary wind speed

Paired first-class cup anemometers on opposed goal-post stubs at the top level, held clear of tower-top distortion. Two sensors, opposite sides — so a clean reading exists in every wind direction.

Land take · indicative

170 m
Outer anchors≈ 128 m radius
Envelope≈ 255 m Ø
Area≈ 5.1 ha
N A1 045° A2 165° A3 285° ANCHOR PLAN · TRUE BEARINGS LAND TAKE = π·R² · R ≈ 0.75 × MAST HEIGHT
Anchor plan · three azimuths, 120° apart · 2–3 rings each = 6–9 anchors
0.0 1.5 3.0 4.5 6.0 40 60 80 100 120 140 160 170 LAND TAKE INSIDE THE ANCHOR CIRCLE HA MAST HEIGHT · M 170 M MAST ≈ 5.1 HA · PERMITTING AND LEASE DRIVER
Area inside the anchor circle, by mast height

Guy anchors sit at roughly 0.75× height on the outer ring, on three azimuths 120° apart — 2–3 rings per azimuth, so 6–9 anchors. Final geometry comes from the structural design for your soil and wind class.

05b · The measurement plan

Plan the campaign, live

IEC 61400‑12‑1 pins every boom to the rotor. Set the turbine’s hub height and rotor diameter — the measurement heights, their ±2.5% tolerance and the mast height all fall out at once. Drag a slider and the mast redraws.

Rotor disc & booms · redrawn live
140 m
120 m
Rotor radius R60 m
Rotor span80 – 200 m
Min mast height200 m
Swept area11 310 m²

Standard IEC boom set across the rotor plane · each height ±2.5% · final layout follows the structural design for your site and wind class.

06 · Boom physics

Booms, aimed around the tower’s own shadow

The tower distorts the very wind it measures — downwind of the lattice sits a turbulent wake. Boom azimuth is an engineering decision made against the site’s wind rose. Drag the wind and watch why the pair never goes blind.

NESW
Wake sector ±30° · rose: reference SW-prevailing pattern — loading the real one …
225°
135° / 315°
Sensor AClean flow
Sensor BClean flow
Single boom keeps–
The pair keeps100% — one sensor is always clean
Boom lengthSensor ≈5.7× face width out → ≈0.5% distortion
Stub height≥15 boom Ø above the boom
AzimuthSet against the site’s prevailing rose

Directions where a sensor sits in the tower’s wake are flagged, and the paired sensor on the opposite boom is used instead — the two flagged sectors can never overlap. Layout per IEC 61400-12-1 Annex G guidance.

A real red-and-white guyed lattice mast standing to full height against a clear blue sky, guy wires radiating down to ground anchors, equipment cabin at the fenced base
Guyed lattice · full height, held vertical
07 · Structure

How a slender tower stands to 170 m

A guyed lattice is light — the guys do the work. Get the geometry and tension right and it holds dead vertical through decades of wind; get them wrong and nothing else matters.

  • Guy ropeDIN 3060 galvanised steel wire rope, sized per level by our structural team.
  • HardwareSS316 stainless turnbuckles and fittings, corrosion-rated for the site.
  • LevelsGuys anchored at multiple heights, radiating to concrete ground stations.
  • TensionEvery guy tensioned to spec and the tower checked dead vertical — hold point H3.
08 · Accountability

Designed, built and raised by one team

Most measurement failures are structural or procedural, not electronic. So we own every link.

An engineer at a desk with a 3D terrain model on the monitor and printed lattice-tower drawings and a calculator beside the keyboard

01 · Design

In-house structural

Our own engineers design the guyed lattice and sensor layout to DIN 3060 and SS316 — one accountable calculation, not a bought-in kit.

Steel being cut in the fabrication workshop — an angle grinder throwing a spray of sparks off a mast box-section, with steel stock laid out around the work

02 · Build

Own fabrication

Fabricated in our own workshop near Pune under our QMS — the team that designed the mast builds it, so nothing is lost in translation.

VOTC crew raising the guyed lattice mast on site, tensioning the guy lines

03 · Raise

Own certified crews

Erected by our own certified crews under a Method Statement, HIRA and Rescue Plan — witnessed through four quality gates.

In the field, right now

Live projects, standing now

Masts we designed, built and raised — in service today, riding out monsoon and heat while they report.

A tall guyed lattice met mast standing in an open field under a wide monsoon sky, power lines on the horizon
Site overview · guyed met mast in service
Looking up the top section of a met mast at its sensor booms and antenna against cloud
Top section · sensor booms and antenna
09 · Handover

The records trail

The mast is half the deliverable; the other half is an auditable trail from the first calculation to the seven-day check.

D-01Structural design calculations & guy-system designPDF
D-02General-arrangement drawing & sensor layoutDWG · PDF
D-03Fabrication & material certificatesPDF
D-04MEASNET / NABL·ILAC calibration certificates, per serial numberPDF
D-05Erection log with witnessed hold-point records H1–H4PDF
D-06Commissioning report & seven-day data verificationPDF · CSV
10 · After handover

Kept measuring, for the life of the campaign

Wind mast operation and maintenance is a separate scope, priced on request alongside the mast. The same team that raised the tower keeps it checked, reported, insured and registered — and takes it down cleanly when the campaign ends.

M-01Quarterly sensor and mast checkQuarterly
M-02Monthly mast reportMonthly
M-03Quick on-site support if any issue on the mastOn call
M-04Dismantle and decommissioningEnd of campaign
M-05NIWE registration for the met mastStatutory
M-06Insurance for the mast structure and sensors against theft and fireCover

The whole chain

Tell us the site. We’ll design the mast.

Coordinates, project stage, and the decision the data must support — we come back with a mast design, a programme through the four gates, and a price.

Call +91 96503 07888 Email info@votc.in

Offices, channels & the enquiry composer →

Mast design, programme & price · within about a week · O&M quote on request