FDOT Subgrade & Base Inspection
The following description is for which type of subgrade stabilization? The Contractor
may use either commercial or local materials. He will not be paid separately for the
stabilizing materials he uses. The bearing value determinations are made by the L.B.R.
Method. Type__ Stabilization. - Correct Answer-Type B stabilization
Subgrade operations can be divided into two basic types. List them. - Correct Answer--
Stabilization
-Cement Treatment
On a curve, what is the maximum interval for setting the stakes along the roadway? -
Correct Answer-25 feet
Which of the following vary according to the type of subgrade stabilization performed? -
Correct Answer-__A. the type of finishing equipment
__(B). the method of determining compliance with the bearing requirements
__C. the use of commercial or local materials
__D. the depth to which the subgrade is stabilized
__E. the basis of payment for the work
Who will set stakes for subgrade operations? - Correct Answer-Contractors Survey
Party
What is the name for the stakes used to control line? - Correct Answer-Hubs
Stakes help to maintain close control in checking the __ and __ of the subgrade. -
Correct Answer-Width ; Depth
Grade stakes may be referred to as __. - Correct Answer-Blue tops
How is the exact line indicated on the hubs? - Correct Answer-Tucks set in hub tops
The embankment surface to be stabilized or treated must comply with the __ and __
requirements before the beginning of subgrade operations.
Who is responsible for verifying this compliance? - Correct Answer-Plan ; Specification
Inspector
, Before any stabilizing material is spread on the subgrade, the roadbed must be brought
to a plane approximately __ to the plan of the proposed finished subgrade surface. -
Correct Answer-Parallel
When cement-treated subgrade is constructed of central plant-mixed material, the
underlying roadbed must be __ when the material is spread. - Correct Answer-Moist
Number the following documents according to governing order -- with 1 being the
highest, 2 the next highest and so on:
__A. Contract Plans
__B. Supplemental Special Provisions
__C. Special Provisions
__D. Standard Specifications
__E. Supplemental Specifications - Correct Answer-(_3_) A. Contract Plans
(_1_) B. Supplemental Special Provisions
(_2_) C. Special Provisions
(_5_) D. Standard Specifications
(_4_) E. Supplemental Specifications
When the existing base material is to be incorporated into the subgrade, should it be
used before or after other stabilizing additives have been mixed in? - Correct Answer-
Before
Who determines what material or combination of materials to use to obtain the required
bearing values? - Correct Answer-Contractor
Where will you find frequencies for sampling, sample sizes, etc.? - Correct Answer-
Sampling, Testing, & Reporting Guide
What kind and type of cement is used for cement-treated subgrade? - Correct Answer-
Portland Cement Type I
If the water to be used in a cement-treatment job comes from a city's water supply, may
it be used without testing? - Correct Answer-Yes
What should you do if the water to be used comes directly from a free-flowing stream? -
Correct Answer-Obtain and submit sample for testing
The results of soil surveys are shown on __ and __ sheets in the plans. - Correct
Answer-Soil survey ; Cross Section
Is sand-clay material an example of a local material that may be used in subgrade
stabilization? - Correct Answer-Yes
Stabilizing additives may consist of:
The following description is for which type of subgrade stabilization? The Contractor
may use either commercial or local materials. He will not be paid separately for the
stabilizing materials he uses. The bearing value determinations are made by the L.B.R.
Method. Type__ Stabilization. - Correct Answer-Type B stabilization
Subgrade operations can be divided into two basic types. List them. - Correct Answer--
Stabilization
-Cement Treatment
On a curve, what is the maximum interval for setting the stakes along the roadway? -
Correct Answer-25 feet
Which of the following vary according to the type of subgrade stabilization performed? -
Correct Answer-__A. the type of finishing equipment
__(B). the method of determining compliance with the bearing requirements
__C. the use of commercial or local materials
__D. the depth to which the subgrade is stabilized
__E. the basis of payment for the work
Who will set stakes for subgrade operations? - Correct Answer-Contractors Survey
Party
What is the name for the stakes used to control line? - Correct Answer-Hubs
Stakes help to maintain close control in checking the __ and __ of the subgrade. -
Correct Answer-Width ; Depth
Grade stakes may be referred to as __. - Correct Answer-Blue tops
How is the exact line indicated on the hubs? - Correct Answer-Tucks set in hub tops
The embankment surface to be stabilized or treated must comply with the __ and __
requirements before the beginning of subgrade operations.
Who is responsible for verifying this compliance? - Correct Answer-Plan ; Specification
Inspector
, Before any stabilizing material is spread on the subgrade, the roadbed must be brought
to a plane approximately __ to the plan of the proposed finished subgrade surface. -
Correct Answer-Parallel
When cement-treated subgrade is constructed of central plant-mixed material, the
underlying roadbed must be __ when the material is spread. - Correct Answer-Moist
Number the following documents according to governing order -- with 1 being the
highest, 2 the next highest and so on:
__A. Contract Plans
__B. Supplemental Special Provisions
__C. Special Provisions
__D. Standard Specifications
__E. Supplemental Specifications - Correct Answer-(_3_) A. Contract Plans
(_1_) B. Supplemental Special Provisions
(_2_) C. Special Provisions
(_5_) D. Standard Specifications
(_4_) E. Supplemental Specifications
When the existing base material is to be incorporated into the subgrade, should it be
used before or after other stabilizing additives have been mixed in? - Correct Answer-
Before
Who determines what material or combination of materials to use to obtain the required
bearing values? - Correct Answer-Contractor
Where will you find frequencies for sampling, sample sizes, etc.? - Correct Answer-
Sampling, Testing, & Reporting Guide
What kind and type of cement is used for cement-treated subgrade? - Correct Answer-
Portland Cement Type I
If the water to be used in a cement-treatment job comes from a city's water supply, may
it be used without testing? - Correct Answer-Yes
What should you do if the water to be used comes directly from a free-flowing stream? -
Correct Answer-Obtain and submit sample for testing
The results of soil surveys are shown on __ and __ sheets in the plans. - Correct
Answer-Soil survey ; Cross Section
Is sand-clay material an example of a local material that may be used in subgrade
stabilization? - Correct Answer-Yes
Stabilizing additives may consist of:
