Mixed Deck — All FDOT Topics Flashcards

What is the minimum design life FDOT specifies for new bridge structures?

Answer: 75 years

FDOT and AASHTO LRFD specify a minimum design life of 75 years for new bridge structures, ensuring long-term serviceability.

According to FDOT's Utility Accommodation Manual, utility installations within the roadside clear zone on non-limited access highways must generally be:

Answer: Underground with adequate cover or shielded by an approved barrier

Utilities in the clear zone must either be buried with sufficient cover to protect them from vehicle impacts and maintenance equipment, or protected by an approved safety barrier to minimize hazard to errant vehicles.

What is the primary purpose of a retention pond in an FDOT stormwater management system?

Answer: Permanently store water and allow infiltration into the ground

Retention ponds permanently store stormwater and allow it to infiltrate into the groundwater, providing water quality treatment and volume control.

What is the significance of a bridge receiving a 'structurally deficient' designation from FDOT?

Answer: The bridge has condition ratings or load ratings below threshold values, indicating a need for repair or replacement

A structurally deficient designation indicates the bridge has condition ratings below threshold values or inadequate load capacity, flagging it for priority repair or replacement funding.

What does "dry density" refer to in FDOT Earthwork?

Answer: The weight of soil alone in a given volume

Explanation: In FDOT Earthwork, "dry density" represents the weight of soil particles without considering the presence of water. It indicates the density of soil when all moisture content has been removed, typically measured during compaction operations to assess soil compaction levels.

What FDOT publication establishes access management standards for the State Highway System?

Answer: FDOT Access Management Manual

The FDOT Access Management Manual establishes standards for controlling access points, medians, and turn lanes on the State Highway System.

According to FDOT specifications, what is the minimum distance from the edge of bridge deck to the centerline of exterior railing post?

Answer: 12 inches

FDOT standards require the centerline of exterior railing posts to be positioned a minimum of 12 inches from the edge of the bridge deck.

What Florida environmental law governs the protection of sovereign submerged lands that FDOT projects may cross?

Answer: Florida Sovereignty Submerged Lands Act (Chapter 253, F.S.)

Chapter 253 of the Florida Statutes, the Sovereignty Submerged Lands Act, governs use of state-owned submerged lands, requiring FDOT to obtain approval for bridge and causeway construction.

Sampling at the roadway is done for:

Answer: Base, subgrade, and embankment.

Explanation: Sampling at the roadway is crucial for assessing the quality and properties of the materials used in various components of the road construction process, such as the base, subgrade, and embankment. By collecting samples from these specific areas, engineers and inspectors can perform tests to ensure that the materials meet the required specifications and standards for strength, density, and other relevant characteristics. This helps maintain the integrity and durability of the roadway infrastructure, ultimately contributing to its long-term performance and safety.

What type of pile is most commonly used for FDOT bridge foundation construction in Florida's coastal and offshore conditions?

Answer: Prestressed concrete square pile

Prestressed concrete square piles are the most commonly used FDOT bridge foundation element, providing corrosion resistance in Florida's aggressive coastal environments.

What is a 'SWPPP' as required for FDOT construction projects disturbing more than one acre?

Answer: Storm Water Pollution Prevention Plan

A Storm Water Pollution Prevention Plan (SWPPP) is required under NPDES regulations to document erosion and sediment control measures for construction sites disturbing more than one acre.

A Utility Work Schedule (UWS) in FDOT construction projects is used primarily to:

Answer: Coordinate timing of utility relocations with the project construction schedule

A Utility Work Schedule coordinates the timing and sequencing of utility relocations so they are completed before or during the appropriate phase of highway construction, avoiding delays.

What does "moisture content" refer to in FDOT Earthwork?

Answer: The amount of water present in the soil relative to its dry weight

Explanation: In FDOT Earthwork, "moisture content" represents the proportion of water in the soil compared to its dry weight. It is crucial for determining the soil's engineering properties and suitability for construction purposes.

What is the minimum required stopping sight distance (SSD) at a design speed of 55 mph per FDOT standards?

Answer: 360 feet

FDOT and AASHTO require approximately 360 feet of stopping sight distance at a design speed of 55 mph, based on reaction time and braking distance.

What FDOT document provides design criteria and load requirements for bridge structures in Florida?

Answer: FDOT Structures Design Guidelines (SDG)

The FDOT Structures Design Guidelines (SDG) supplements AASHTO LRFD specifications with Florida-specific requirements for bridge design.

What is the 'no net loss' policy as applied to FDOT wetland permitting?

Answer: Any wetland impacted by an FDOT project must be replaced by equal or greater area and function

The no net loss policy requires that wetland impacts from FDOT projects be compensated by mitigation creating, restoring, or enhancing wetlands of equivalent area and ecological function.

In FDOT drainage design, what does the rational formula variable 'C' represent?

Answer: Runoff coefficient based on land use

In the rational formula Q = CiA, the variable C is the dimensionless runoff coefficient that represents the fraction of rainfall that becomes runoff based on land use and soil type.

What does the FDOT suffix 'NBI' refer to in bridge management?

Answer: National Bridge Inventory

NBI stands for the National Bridge Inventory, the federal database of bridge inspection data that all state DOTs must report to for bridges on public roads.

What FDOT publication establishes the requirements for accommodating utilities within the state highway right-of-way?

Answer: Utility Accommodation Manual

FDOT's Utility Accommodation Manual (UAM) is the primary document governing the placement, adjustment, and relocation of utilities within the state highway right-of-way.

What does 'Section 106' consultation require of FDOT when projects affect historic properties?

Answer: Identify and consult with interested parties regarding effects on historic properties before approval

Section 106 of the National Historic Preservation Act requires FDOT to identify historic properties, assess project effects, and consult with SHPO and stakeholders before project approval.