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MegaDeck HD+ Calculator
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MegaDeck HD+ — Mat Specifications
Overall Dimensions: 7.5′ L × 14′ W × 4″ H | Overall Coverage: 105 sq ft per mat
Usable Dimensions: 6.5′ L × 13′ W | Usable Coverage: 84.5 sq ft per mat (flange-adjusted)
Weight: ~1,025 lbs per mat | Load Rating: up to 600 psi
Overall Dimensions: 7.5′ L × 14′ W × 4″ H | Overall Coverage: 105 sq ft per mat
Usable Dimensions: 6.5′ L × 13′ W | Usable Coverage: 84.5 sq ft per mat (flange-adjusted)
Weight: ~1,025 lbs per mat | Load Rating: up to 600 psi
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Mats Required
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MegaDeck HD+ Mats
Coverage
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square feet
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lbs (~— tons)
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columns × rows
Actual Coverage
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ft × ft
Layout Preview
What’s included in this order
MegaDeck HD+ Mats
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MDX Pins (8 per mat)
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Signature Tool Kit (1 per 20 mats)
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Product Guide · Heavy-Duty Composite Mats
MegaDeck HD+: Heavy-Duty Composite Matting for Extreme Loads
When you have to move cranes, rigs, or the heaviest tracked equipment across soft, muddy, or sensitive ground, you need a mat that won't flex, crack, or sink.
MegaDeck HD+ sits at the top of the composite-mat range — engineered for the loads lighter mats can't touch, and built to last 10+ years. It's built by Signature Systems for the toughest ground conditions in construction, oil and gas, and power transmission, and the MegaDeck HD+ Mat ships free.
600 psi86,400 lb per ft²
105 ft²per mat (7.5' × 14')
~1,025 lbper mat · 4" thick
10+ yrsreusable service life
Built for Extreme Loads
MegaDeck HD+ carries up to 600 psi — 86,400 lbs per square foot — making it the right platform for cranes, drilling rigs, and heavy tracked equipment on soft or unstable ground. The secret is the cross-ribbed interior, which spreads weight evenly across the whole panel instead of letting it concentrate at one point.
That even distribution is what keeps the mat stable in swampy and muddy conditions where lighter mats would dish or fail. For lighter-duty work or shorter-term access, compare it against the SignaRoad medium-duty mat or the 4' × 8' DuraDeck ground protection mats.
Engineered to Outlast Plywood
Built from HDPE with special impact modifiers, MegaDeck HD+ won't rot, warp, crack, delaminate, or absorb water and contaminants the way plywood does. The composite is UV-resistant, non-conductive, chemically inert, and flame-rated (UL-94 HB) — a real advantage on power-transmission and oil-and-gas sites.
Mats clean up with a pressure washer and redeploy job after job for 10+ years, and they won't carry contaminants between sites. They also ship efficiently: roughly 50% more MegaDeck mats fit on a truck than 3-ply bolted mats, with 40 to a standard container.
The Locking System: MDX Pins & S2 Lock
Overlapping flanges lock together with MDX alloy pins or S2 Lock technology — 8 pins per mat — to build one continuous surface that won't drift, separate, or lift under heavy rolling loads or over soft ground.
The pin hole is molded into the mat and clearly shows whether a connection is locked, so crews can verify the surface fast. The system pairs an alloy pin with flexible plastic to hold up under the most extreme loads and impacts. The calculator above adds the right number of MDX pins automatically once it knows your mat count.
Sizing Your Project
Each mat measures 7.5' × 14' × 4" for 105 ft² overall, but plan your layout on the usable coverage of 84.5 ft² (6.5' × 13') once the flanges overlap. Divide your platform or roadway area by the usable figure to get a starting count, then account for the connection layout.
MegaDeck HD+ carries a 5-mat minimum, and the MegaDeck calculator at the top of this page turns your dimensions into an exact mat count so you order right the first time — including pins and tool kits.
Important: Not for Bridging
MegaDeck HD+ distributes load across the ground beneath it — it doesn't span gaps. Always lay mats over continuous supporting subgrade, never across open trenches, voids, or unsupported spans. Solid ground contact is what lets the mat carry its rated load safely.
Quick Planning Checklist
1
Confirm the load: MegaDeck HD+ is built for cranes, rigs, and the heaviest equipment (up to 600 psi).
2
Measure your platform or roadway area.
3
Size by usable coverage — 84.5 ft² per mat, not the 105 ft² overall.
4
Plan on 8 pins per mat and a 5-mat minimum order.
5
Lay over continuous ground — never bridge gaps or trenches.
Pro Tip
Skip the hand math. Enter your dimensions in the MegaDeck Calculator Tool above and it returns the exact number of mats, MDX pins, total weight, and a layout preview — then adds everything to your cart in one step.
Case Study: Access Road for Heavy Equipment in Wet Conditions
Project: A construction firm needed to transport large cranes and heavy equipment across a wet, unstable field to reach a remote jobsite.
Challenge: The area was saturated from recent rains, making it impossible for trucks to travel without getting stuck or damaging the ground.
Solution: By deploying a network of interconnected MegaDeck HD+ mats, the team created a stable, heavy-duty roadway that supported the heaviest loads. The cross-ribbed design distributed the equipment's weight, and the mats connected seamlessly without gaps.
Results: The project was completed on time, with no vehicle delays or ground damage. After the job, the mats were cleaned and reused for the next project, reducing material costs.
MegaDeck HD+ FAQ
Where are MegaDeck HD+ mats made?
The mats are made in the USA by Signature Systems.
How many pins do I need?
Plan on 8 MDX pins per mat. The calculator above works out the exact pin count from your mat total automatically, along with one Signature Tool Kit per 20 mats.
Is there a minimum order?
Yes — MegaDeck HD+ carries a 5-mat minimum. The calculator rounds your project up to a valid order.
Can MegaDeck HD+ bridge a trench or open span?
No. MegaDeck HD+ distributes load across the ground beneath it and is not designed to span gaps. Always lay mats over continuous supporting subgrade.
How much does shipping cost?
Every order ships free. MegaDeck also ships efficiently — 40 mats fit in a standard container or on a flatbed trailer.
Ready to size your job?
Get an exact mat count with the calculator, or browse the full MegaDeck lineup.