Road Design
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The performance and durability of roads, besides the uncontrollable weather conditions also depend on traffic load and count. Roads designed using Probase Technology takes into account all the conceivable variables. |
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What is the maximum loading?
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Probase Technology design factor is based on ESAL (table as shown below). The load equivalent factor can be designed up to 10 million load axle. |
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How long it last?
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One of the design factors in ESAL is design life which could be 5, 10, 15 or 20 years. The most economical design life is 15 or 20 years. |
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Endless Troubles with Muddy Road
Fix it with Probase |
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Probase Road Design Factor
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ESALY1 = ADT x 365 x PCV x LEF x L x T
ESALDES = ESALY1 x [(1 + r)n - 1] / r |
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Description |
Units |
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Average Daily Traffic |
ADT |
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Percentage of CV (un-laden weight > 1.5 tons) |
Pcv |
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Terrain Factor |
T |
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Lane Distribution Factor |
L |
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Load Equivalent Factor (What is max. loading?) |
LEF |
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Average Annual Traffic Growth Factor |
r |
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Design Life (How long it last?) |
Years |
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Sub-grade CBR |
CBR % |
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Minimum Subgrade CBR |
Probase PB-65 Seal Sealant Layer |
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 Stabilized Road Base with minimum CBR 50% |
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The 5 1/2 axle truck loaded with 40 tons of lumber on Probase sealed road. |
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A road designed for 15 years using Probase Technology still performing well after 17 years (since year 1999). |
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