What is the LEF for a $24,000lb$ single axel load if the structural

number for fexible pavement is $5$ and the terminable

serviceability is $2\mathrm{.}0?$

When calculating w$18,$ what factor accounts for the distribution

of ESAL units by lane?

What is the growth factor for a pavement design with a design

life of $15$ years and a constant growth rate of $3\%?$

When calculating w$18,$ what factor accounts for the distribution

of ESAL units by directions?

What is the LEF for $24,000lb$ single axle load if the slab

thickness for a rigid pavement is $7$ and the terminable

serviceability is $2\mathrm{.}0$

A dump truck has one single axle and one tandem axle. Dump

trucks entering a gravel pit will be empty with a total weight of

$20,000lb,$ distributed as $8,000lb$ on the single axle and $12,000$

lb on the tandem axle. Dump trucks leaving the gravel pit will

be fully loaded with a total weight of $68,000lb,$ distributed as

$20,000lb$ on the single axle and $48,000lb$ empty trucks are

expected to enter the gravel pit and $10,000$ fully loaded trucks

are expected to exit the gravel pit. Assuming a growth factor of

$33\mathrm{.}066,$ determine the ESALS to use when designing a rigid

pavement for the single exit lane serving the fully loaded trucks.

Assume a terminable serviceability of $2\mathrm{.}0$ and a slab thickness of

$8$ inches. lb on the tandem axle. During the first year of

operation of a new gravel pit, $10,000$

A dump truck has one single axle and one tandem axle. Dump

trucks entering a gravel pit will be empty with a total weight of

$20,000lb,$ distributed as $8,000lb$ on the single axle and $12,000$

lb on the tandem axle. Dump trucks leaving the gravel pit will

be fully loaded with a total weight of $68,000lb,$ distributed as

$20,000lb$ on the single axle and $48,000lb$ on the tandem axle.

During the first year of operation of a new gravel pit. $10,000$

empty trucks are expected to enter the gravel pit and $10,000$

fully loaded trucks are expected to exit the gravel pit. Assuming

a growth factor of $33\mathrm{.}066,$ determine the ESALS to use when

designing a flexible pavement for the single exit lane serving the

fully loaded trucks. Assume a terminable serviceability of $2\mathrm{.}0$

and a structural number of $5.$

An ESAL is an equivalent $18,000lb$ single axel load

The roadbed soil resilient modulus remains constant throughout

the year

What is the LEF for a $50,000lb$ tandem axel load if the

structural number for a flexible pavement