Home Technical Guide How Much Matting Do I Need
TECHNICAL GUIDE · QUANTITY PLANNING

How much ground protection matting do I need?

Start with the geometry. Measure the route or working area, build it from whole panels, then add only the passing places, turns, transitions and contingency the project actually needs. Product suitability is checked separately.

Measure the shapeLength and required working width for routes, or full dimensions for filled areas.
Use whole panelsRound rows and widths up. A simple square metre division is only the baseline.
Add real extrasPassing bays, corners, transitions, staging and contingency come from the layout.
Check suitability apartGround, load, traffic and duration decide the system, not the quantity formula.
THE SHORT ANSWER

Count whole panels. Then qualify the project.

For a straight route, work in rows and panels across. For a regular compound, work in whole rows and columns. Do not select a product by taking the area and choosing the smallest number of panels.

The route formula

Panels across equals the required working width divided by the laid panel width, rounded up.

Rows along equals the route length divided by the panel advance in that orientation, rounded up.

Base quantity = panels across × rows along

Then add the panels shown on the agreed layout for turns, passing places, working areas, interfaces and project contingency.

FOUR STEPS

From sketch to project quantity.

A usable count comes from the actual route or area, not from a single area figure in isolation.

Draw the footprint

Mark the straight route, filled areas, corners, turning zones, passing places, entrances and transitions.

Set the width

Use the required working width for the agreed traffic and route controls. Do not assume the vehicle body width is enough.

Choose orientation

Test which panel edge runs across and which advances along the route. Orientation can materially change the count.

Round and add

Round every row and column up, then add only the project extras visible on the layout or held as agreed contingency.

For irregular shapes: split the area into simple rectangles, calculate each section, then reconcile the joins on one panel layout. This prevents double counting where sections meet.
CURRENT PLANNING FIGURES

Physical size and usable coverage.

These figures support the first quantity pass. They do not state which product is suitable for the project. Final geometry depends on orientation, connections, edge conditions and the agreed installation layout.

TrackMatz classPhysical panel sizePlanning coverageQuantity note
TM10Light duty system1,200 × 800mm0.96m² grossPlan in whole interlocking panels and allow for the agreed edge and transition arrangement.
TM50Medium duty system2,410 × 1,200mm2.89m² grossTest both orientations. Connected route width and panel advance must be shown on the layout.
TM120Heavy duty system3,000 × 2,500mm7.50m² grossWhole-panel orientation changes both the achieved road width and the number of rows.
TM200Extra heavy duty system4,000 × 2,000mm6.84m² usableThe connected system has 200mm overlaps on two sides. Use the 3.8 × 1.8m net module for continuous-layout planning.
Gross area is not automatically installed coverage. TM200 is the clearest example: its physical panel area is 8.00m², but the published usable area is 6.84m² because the connected layout overlaps by 200mm on two sides. Use current product data, not a generic percentage deduction.
WORKED EXAMPLE

A 100m route. Two planning widths.

Whole-panel geometry changes the count. For one-way traffic, TrackMatz would normally begin with a 3.0m route. Where wider access or controlled dual-lane movement is required, two 2.5m panel edges side by side form a 5.0m route. TM120 dimensions are used for arithmetic only. It is not a recommendation that TM120 suits the ground or traffic.

One-way planning geometry

TM120 laid 3.0m across, 2.5m along

Required working width3.0m
Panels across: 3.0 ÷ 3.01 panel
Achieved route width3.0m
Rows along: 100 ÷ 2.540 rows
Base straight-route quantity40 panels
Wider route planning geometry

TM120 laid 2.5m across, 3.0m along

Required working width5.0m
Panels across: 5.0 ÷ 2.52 panels
Achieved route width5.0m
Rows along: 100 ÷ 3.0, rounded up34 rows
Base straight-route quantity68 panels
Two whole-panel layouts for a 100 metre TM120 routeThe one-way layout uses one three metre by two point five metre panel across each row. The wider layout uses two panels with their two point five metre edges across the route and three metre edges along it.100m ROUTE · TM120 PANEL PROPORTIONSONE-WAY · 3.0m WIDE3.0m · 1 panel across2.5m advanceWIDER ROUTE · 5.0m WIDE5.0m · 2 panels across3.0m advance
Each illustrated panel keeps the 3.0 by 2.5 proportion. The drawing is an arithmetic aid, not an installation drawing. The final layout must show actual route geometry, connections, edges, traffic controls, turns and interfaces.
The 40-panel and 68-panel figures are straight-route base counts. Add the panels required for confirmed passing places, corners, transitions, working areas and agreed contingency. A blanket five or ten percent allowance is not a substitute for drawing those features.
LAYOUT CHANGES THE COUNT

The extras should be visible on the plan.

Three useful diagrams from the existing guide remain because they explain where quantity changes occur. The exact panel count depends on the selected system and measured geometry.

passing place

One way with passing places

A controlled single lane can use fewer panels than continuous two way access, but each passing place must be measured and counted.

Two way, dual lane

Continuous two way movement needs the measured working width for both lanes and suitable separation, not an automatic doubling rule.

widened corner

Turns and off tracking

Long vehicles cut inside a turn. Widen the measured corner geometry so the agreed traffic path remains on the system.

TrackMatz panels forming a straight temporary access route across grass
Real routes are made from whole connected panels. Vehicle path, orientation, turns and interfaces determine the final number.
Passing and holding areasCount the full widened footprint shown on the movement plan.
Corners and turningUse the swept path or agreed traffic geometry, then resolve it into whole panels.
Transitions and interfacesInclude entrance flares, ramps, gates, crossings, laydown and working zones where they are part of the scope.
Project contingencyAgree any spare panels for local adjustment, changing conditions or programme resilience. Record the reason and number.
SUITABILITY IS A SEPARATE DECISION

The count can be right. The system can still be wrong.

Only after the base geometry is understood should the project team qualify the product class, ground, loading, traffic, duration, preparation and installation method.

Ground evidence

What supports the route?

Separate measured project evidence, observations and mapped screening context. Postcode context is not measured site CBR.

Read the CBR guide →
Loads and movement

How is the ground loaded?

Vehicle weight alone is not enough. Footprint, axles, tracks, turning, braking, frequency and concentrated loads matter.

Read working load guidance →
Delivery and layout

Can it be installed as planned?

Access, offload, handling, orientation, connections, edges, inspection and removal all affect the delivered system.

Plan delivery and installation →
Human confirmation

Who reviews the starting point?

TrackMatz reviews the evidence, assumptions, class and quantity before commitment and identifies when more input is needed.

See the TrackMatz method →
This guide and TrackSpec support early planning. They are not a site investigation, measured CBR result, temporary works design, engineering approval or automatic permission to proceed. Cranes, outriggers, concentrated loads, steel tracks and other high consequence cases may require formal engineering review.
HUMAN PROJECT REVIEW

Send the route. We will check the count.

A marked plan, dimensions, photographs and traffic details let the TrackMatz team review the whole-panel layout and challenge any missing zones before a proposal is prepared.

Route length, required working width and all filled areas
Corners, passing places, entrances, crossings and transitions
Ground evidence, heaviest loads, traffic frequency, dates and duration
COMMON QUESTIONS

Ground protection quantity. Answered clearly.

How do I calculate how many ground protection mats I need?

For a straight route, divide the required working width by the laid panel width and round up. Divide the route length by the panel advance and round up. Multiply the two whole-panel figures, then add the measured panels for turns, passing places, transitions, working areas and agreed contingency.

Should I add five or ten percent to the mat quantity?

There is no universal percentage that works for every system and layout. Add the actual panels required for route features and an agreed contingency with a recorded reason. TM200 also has a product-specific net usable area because its connected layout overlaps by 200mm on two sides.

How much area does one TrackMatz panel cover?

Current planning figures are 0.96m² gross for TM10, 2.89m² gross for TM50, 7.50m² gross for TM120 and 6.84m² usable for TM200 in a connected layout. Use whole-panel geometry and current product data for the final plan.

Does soft or wet ground mean I need more mats?

Not automatically. The same route geometry still needs to be covered, but weaker or wetter ground can change the suitable product, preparation, layout or engineering requirement. Because different systems have different panel sizes and usable coverage, changing product can change the final panel count.

Can a square metre calculation plan a temporary roadway?

It gives a baseline only. A roadway must resolve into whole rows and whole-panel widths, with corners, swept path, passing places, entrances, transitions and working areas included. Orientation can change the achieved width and count materially.

Does TrackSpec approve the quantity or system?

No. TrackSpec gives an indicative product class and quantity from the supplied project inputs and mapped context. TrackMatz human review follows. It is not a site investigation, measured CBR result, temporary works design, engineering approval or permission to proceed.

SOURCES AND REVIEW

Current product facts. Limits kept visible.

TM10 current TrackMatz specification
Current physical dimensions and product information for the light duty system.
TM50 current TrackMatz specification
Current Isokon ISOtrack L dimensions, weight and product guidance.
TM120 current TrackMatz specification
Current physical dimensions, weight, connection information and supplier guidance.
TM200 current TrackMatz specification
Current physical dimensions, 6.84m² usable area, overlaps, handling and connection information.
TrackMatz delivery and installation guide
Current site access, offload, layout, connection, inspection and removal guidance.