Flood freeboard definition. . 748. Elevating a home a few feet above legally mandated heights has very little effect on the overall look of a home, yet it Design Flood Elevation (DFE) The elevation of the highest flood (generally the BFE in-cluding freeboard) that a retrofitting method is designed to protect against. Many communities adopt freeboard, a factor of safety usually expressed in feet above the Base Flood Elevation. Jan 1, 2025 · Freeboard plays a critical role in flood risk mitigation by providing an additional buffer above the flood levels predicted by flood zone maps. In Oman, where coastal development and urban Freeboard, within the context of maritime context, is a measure of a ship’s or boat's safety, defined as the minimum vertical distance between the waterline and the topmost non- watertight part of the vessel's side (sometimes referred to as the 'gunwale' or the 'upper edge' of the boat's side). 2% annual-chance flood elevation for critical actions. 5 The CISA flood elevation must be at least as restrictive as the 1% annual-chance flood elevation for non-critical actions and the 0. Feb 27, 2025 · Freeboard, the vertical distance between the design top water level and the top of a drainage structure, is a critical consideration in Sustainable Drainage Systems (SuDS) and drainage design in Issue: Are flood openings required when the floor/slab of an attached garage or an enclosure below an elevated building is at or above the BFE, but below BFE plus freeboard required in the Florida Building Code (including additional freeboard if locally adopted)? WHAT IS FLOOD RESILIENCE AND MITIGATION? For the water sector, “flood resilience” refers to the ability of 1 water and wastewater utilities to withstand a flooding event, minimize damage and rapidly recover from disruptions to service. Jun 19, 2024 · Read our key takeaways from the recent HUD training as well as additional guidance on the Federal Flood Risk Management Standard here. Freeboard Value Approach (FVA): FVA defines the FFRMS floodplain as the elevation and flood hazard area that result from adding 2 feet to the base flood elevation (BFE) for non-critical actions or adding three feet to the BFE for critical actions. Glossary and Explanations in Ordinary Language We’ve translated FEMA’s explanations of key terms into ordinary language, and provided additional context to make them more accessible to members of the general public. Define Freeboard. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, blockage of bridge or culvert openings, and the hydrological Guidance Definition: Non-accredited levee analysis and mapping procedure that is applicable if the freeboard requirement is not met, but the top of levee is above the 1-percent-annual-chance flood. However, if you are unable to make the determination, contact your Write Your Own (WYO) company underwriting staff or, for NFIP Direct Policies, the NFIP Direct underwriting department for assistance. Based upon FEMA’s review, specific language related to NFIP regulations was not consistent. Eleva ng a home a few feet has very lile effect on its overall look, yet it can lead to substan al reduc ons in flood insur‐ance, significantly decrease the chances the home will be Flood risk for assets and people at any location in a floodplain is a function of flood hazard at that location and their exposure and vulnerability to the flood hazard. Understanding what freeboard in construction means is essential for engineers, architects, and builders to ensure that structures are designed to withstand extreme weather conditions, particularly in flood-prone areas. 6 See FEMA Policy 206-24-005 for definition. Building Valuation Calculation Table If your home or business is in the Special Flood Hazard Area (SFHA) and is not flood compliant (i. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings, and Define Regulatory Flood Protection Elevation (RFPE. ” It comes with a penalty to existing and prospective owners of property located APPENDIX D:99981231160000-0800 GLOSSARY These technical terms are described in more detail in the unit and section noted. “Freeboard” tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings, and the hydrological effect of urbanization of For Flood Design Class 4 buildings, requires the minimum lowest floor elevation (or floodproofing level of protec-tion) to be the higher of the Base Flood Elevation plus freeboard specified in Chapters 2, 4, and 6, the Design Flood Elevation, or the 500-year flood elevation. A mitigation measure can be an emergency planning activity, equipment modification Freeboard results in significantly lower flood insurance rates due to lower flood risk. Freeboard is standard for placing the first floor of a structure above the elevation of the calculated 1% flood level in order to allow for nature’s uncertainty and future changes in the watershed that will increase flood levels. The rim elevation is the level at which the manhole access cover is located. 4. Jul 8, 2020 · Freeboard is a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. means the “Base Flood Elevation” plus the “Freeboard”. The official FEMA definitions of these terms are to be found on the National Flood Insurance Program Terminology Index webpage. 1 Building Planning, Freeboard Requirements for Building Design and Construction Jun 23, 2014 · 748. It is used to compensate for the many unknown factors that could contribute to flood heights greater than those calculated for the base flood. Additionally, during Compliance Assistance Contacts with local This Technical Bulletin provides guidance on the National Flood Insurance Program’s (NFIP’s) requirements on the use of construction materials that are resistant to flood damage in Special Flood Hazard Areas (SFHAs). When scoping and designing projects, applicants must consider nature-based solutions and use them where possible. This additional height is intended to account for various unpredictable factors that could cause floodwaters to rise higher than expected. Having this regulation in place allows for lower insurance premium costs that homeowners incur. In “Special Flood Hazard Areas” where no BFE has been established, this elevation shall be at least two (2) feet above What is freeboard? Freeboard elevation is the extra height added to a building above the expected flood level, known as the Base Flood Elevation (BFE). Freeboard What is Freeboard? NFIP ‘Freeboard’ Definition - “A factor of safety, usually expressed in feet above the BFE, which is applied for the purposes of floodplain management. While the term sounds beneficial, it must be noted that “freeboard ain’t free. Oct 22, 2021 · The base flood elevation is defined the same as the design flood elevation except that the discharge is based on Base (100-year) Flood frequency. 3 Freeboard High Water Adding freeboard. The National Flood Insurance Program (NFIP) terminology index is a list of flood zone designations, floodplain management terms, plus regulations, policies, technical bulletins and guidance. If not followed, communities could end up approving non-compliant construction with lowest floors below the FBC-required elevation (including freeboard). Future conditions flood: The flood having a one percent probability of being equaled or exceeded in any given year based on future-conditions hydrology. In the context of construction, freeboard is generally used to ensure that the building or infrastructure remains protected from flooding, storm surges, or other water-related hazards. RATIONALE: Freeboard is the single most effective means for reducing flood risk to a structure in the floodplain. Definition of Freeboard in Construction In the design of a structure located within the shoreline floodplain or other watershed floodplain, the additional height that the structure is protected from flood waters above the BFE ( base flood elevation ) is called the freeboard. All local elevation requirements must coordinate with State minimums and that is the place to do it. Glossary Freeboard Additional height above the base flood elevation to which a building is protected from flooding. One critical but often overlooked element in mitigating the risk of flooding is the concept of freeboard. 1 Utilities can build resilience by implementing mitigation measures. How does flood zone, BFE, and freeboard affect my remodel? The definition of freeboard in tailings impoundments must consider the specific characteristics of these works that store both solids and water at the same time. Think of it as a safety buffer—measured in feet—to help protect homes and buildings from floods that might rise higher than predicted. Mar 24, 2015 · Freeboard is a “safety factor” that individual jurisdictions can adopt, imposing more stringent height requirements than the FEMA mandated requirements. New York State Flood Risk Management Guidance for Implementation of the Community Risk and Resiliency Act. These factors may Freeboard Freeboard means a factor of safety usually expressed in feet above a flood level for purposes of flood plain management. 1 Structural Design, Freeboard Definitions, Freeboard 1612. Freeboard means the additional height, usually expressed as a factor of safety in feet, above a flood level for purposes of floodplain management. Aug 19, 2015 · The definition of freeboard in tailings impoundments must consider the specific characteristics of these works that store both solids and water at the same time. ALSO The channel of a river or stream and those parts of the flood plains adjoining the channel, which are reasonably required to carry and discharge the floodwater or floodflow of any river or stream. Apr 13, 2016 · BASE FLOOD ELEVATION, CROWN OF ROAD, AND FREEBOARD, AND BY CREATING DEFINITIONS FOR CENTERLINE OF ROADWAY, CRITICAL FACILITY, FUTURE CROWN OF ROAD, MINIMUM FREEBOARD, MAXIMUM FREEBOARD, GREEN INFRASTRUCTURE, LOW IMPACT DEVELOPMENT LID), AND SURFACE STORMWATER SHALLOW CONVEYANCE; BY AMENDING SECTION 54-45, " PERMIT PROCEDURES," TO REQUIRE A STORMWATER MANAGEMENT PLAN; BY AMENDING SECTION 54-47 When actionable science is not available and a Federal department or agency opts not to follow the climate-informed science approach for riverine flood hazard areas, the Federal department or agency may also select either the freeboard approach, or “500-year” flood elevation approach, or a combination of approaches, as appropriate. The concept is widely Freeboard is a factor of safety expressed in feet above the BFE. 3 Building Planning, Freeboard 1612. Other benefits of freeboard include incurring less damage, easier and faster cleanup after a flood event, and lower flood insurance rates. Free board can be defined in different terms such as What is Freeboard Elevation and Why is it necessary? A freeboard elevation is a locally regulated higher standard that has been adopted to reduce future flooding risk to property and structures. 10. 1 Open Channels One measure of freeboard in open channels is vertical distance from the design water surface elevation to the top of the channel. Freeboard is defined by the American Society of Civil Engineers (ASCE) in ASCE 24-05, Flood Resistant Design and Construction, as “additional height used as a factor of safety in setting the minimum elevation of a structure, or floodproofing measures applied to a structure, to compensate for factors that may increase flood heights and for uncertainties inherent in determining flood Freeboard means a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. Freeboard is the vertical distance between the crest of the embankment and the reservoir water surface. ” The City of Lewes requires new homes constructed in the AE and VE flood zones to have a freeboard of 36 inches. The most common construction methods used to leverage freeboard to maximize life safety and risk reduction to personal property for housing within a Special Flood Hazard Area (SFHA) and other flood-prone areas are foundation systems that leverage the use of fill for slab-on-grade (SOG) or an open-space, elevated system such as a pier and beam foundation. Do you ever wonder what all the acronyms mean on the National Flood Insurance Program's website? Here is a list of all of them for your reference Aug 3, 2016 · In the context of minimum flood elevation requirements, “Freeboard” is an additional height above the FEMA mandated minimum elevation in flood prone areas to afford an extra measure of protection from storm surge and flooding. In “ Special Flood Hazard Areas ” where Base Flood Elevations (BFEs) have been determined, this elevation shall be the BFE plus Insert freeboard [two (2) feet (Two feet is the state recommended minimum)] feet freeboard). Jul 22, 2025 · Safety: Sufficient freeboard ensures that waves do not easily flood the deck, reducing risks of capsizing or loss of stability. Mar 16, 2025 · In construction and civil engineering, freeboard refers to the vertical distance between the highest water level and the lowest point of a structure that needs protection from flooding or water intrusion. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated. When we say that a node is surcharged it means that, the hydraulic grade of the incoming flow is greater than the downstream pipe's soffit (top/crown) but is less than the rim elevation of the manhole minus the free-board for the manhole or catch basin. Jul 29, 2022 · The Freeboard Value Approach (FVA), in which two feet, or three feet for critical actions*, is added to the 100-year flood elevation, and the floodplain is the area extending from the flooding source to that higher elevation. Research shows that higher regulatory standards reduce future flood damage, and the importance is recognized by over 80% of CRS communities who already require freeboard. Free board can be defined in different terms such as: Normal freeboard: Normal freeboard is defined as the difference in elevation between the crest of the dam and the normal reservoir water level as fixed by design requirements. The BFE is based on a flood that has a 1% chance of happening in any year, and freeboard gives added Jul 9, 2025 · Freeboard is a critical measurement in various engineering and environmental disciplines, especially in maritime, hydraulic, and civil engineering sectors. WHERE TO GET HELP The Lowest Floor Guide will assist you in determining the LFE for the majority of your business. See the NFIP regulations in Appendix E for the complete definitions. The use of the 100-year flood was largely based on the National Flood Insurance Program (NFIP) Base Flood Elevation (BFE) and did not meet the reliability targets of ASCE 7. DFE is the sum of the base flood elevation and freeboard, based a building’s structural category. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a flood frequency and floodway conditions, such as wave action, and floating debris under bridge openings. 3 This program, administered by FEMA, makes federal flood insurance available to property owners in communities that impose a This guidance is important to help local officials apply the FBC lowest floor and enclosure requirements so that buildings are compliant. Freeboard plays a significant role in preventing water from overtopping decks—be it on ships, offshore platforms, or coastal structures—thereby safeguarding assets, enhancing Dec 8, 2024 · In construction, the term freeboard refers to a crucial measurement related to flood risk management and the overall design and safety of buildings. Changed the location to measure freeboard from the water surface elevation taken at cross section 3 or 4, which ever is greater. Building Code Requirements That Exceed or Are More Specific Than the National Flood Insurance Program This fact sheet summarizes the flood-resistant provisions of the 2021 International Codes (I-Codes) and American Society of Civil Engineers (ASCE) 24-14, Flood Resistant Design and Construction, that are “higher standards” and that are more specific than the National Flood Insurance The following is the FEMA definition of Freeboard: Freeboard is a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. Accurately measuring freeboard ensures safety, compliance with regulations, and optimal design performance. Freeboard Value Approach (FVA): The elevation and flood hazard area that result from using the freeboard value, reached by adding an additional 2 feet to the base flood elevation for non-critical actions and by adding an additional 3 feet to the base flood elevation for critical actions. 5 foot at the upstream end of a levee. Freeboard Value Approach (FVA): The elevation and corresponding horizontal floodplain that result from using the freeboard value, reached by adding 2 feet to the base flood elevation (BFE)11 for non-critical actions12 (+2’ FVA) and from adding 3 feet to the BFE for critical actions (+3’ FVA). Incorporating freeboard into building plans can result in substantial savings in flood insurance premiums each year, especially for buildings located in Zone V (a coastal flood zone at risk from wave action). Freeboard tends to compensate for many unknown factors, such as wave action, blockage of bridge or culvert openings, and hydrological effect of urbanization of the watershed, which could contribute to flood heights greater than the heights 2-1 Purpose and Scope The purpose of this chapter of the Guidelines is to provide technical guidance for determining the appropriate Inflow Design Flood (IDF) to be used in the review of spillway and appurtenant structure designs and to conform to the provisions of the Federal Guidelines for Dam Safety. Jul 15, 2020 · Communities without a 2-foot freeboard requirement in their floodplain regulations similar to HUD's new FFRMS rule, risks limiting homeownership opportunities. There are three approaches for determining the FFRMS floodplain and FFRMS flood elevation – the Climate-Informed Science Approach (CISA), the Freeboard Value Approach (FVA), and the 0. , 2 feet above the Base Flood) in determining the level at which a structure's lowest floor must be elevated or floodproofed to be in accordance with state or community floodplain management regulations. Apr 5, 2025 · Freeboard height plays a key role in dock design—learn how the right elevation helps protect structures in flood-prone and coastal areas. Non-accredited levee systems are those that do not meet all the requirements outlined in Title 44 of the Code of Federal Regulations (CFR), Section 65. "Freeboard" is defined as follows (from 44 CFR 59. Clarified freeboard definition and location for To: Freeboard is defined as the vertical distance between the low chord elevation of the bridge superstructure and the design flood elevation. R324. 1 Structural Design, Freeboard Requirements for Building Design and Construction R322. Oct 9, 2025 · A recent audit of New Jersey’s model ordinances by FEMA for conformance with the National Flood Insurance Program (NFIP) regulations, 44 CFR Parts 59 and 60, resulted in a review of existing local flood damage prevention ordinances. Another measure of freeboard in open channels is the vertical distance from the design water surface elevation to the top of the channel lining. The building height has been increased to 35. 1. The general criteria for setting the sofit elevation is to pass the greater of (1) Design Flood (typically Q50 + freeboard), or (2) Base Flood (Q100 without freeboard). 2PFA). The configuration of the levee is generally dictated by the foundation soils and the materials available for construction. Freeboard helps account for modeling and mapping uncertainties associated with FIRMs, as well as a degree of anticipated future sea level rise and the hydrological effect of urbanization of the watershed, and provide additional Dec 17, 2024 · What is Freeboard in Construction? Freeboard refers to the vertical distance between the flood level (or water surface) and the lowest point of a structure that is critical for safety. A-Zones Mar 2, 2025 · What Is Freeboard in Construction? In construction, particularly in coastal and flood-prone areas, freeboard refers to the vertical distance between the highest predicted flood level and the lowest structural component of a building. Freeboard: A Comprehensive Guide to Its Legal Definition and Role Definition & meaning Freeboard refers to a safety margin, typically measured in feet, that is added above a designated flood level for floodplain management purposes. measurement. Freeboard: A factor of safety, usually expressed in feet above the Base Flood Elevation, that determines the required level of flood protection. Jul 11, 2019 · The freeboard is an additional height allowance used in the design of levees to compensate variables inherent in that design (it is a safety factor). Studies have confirmed that 30% - 40% of flood claims/damage come from structures that are located Elevation and Freeboard (additional height above the NFIP’s base flood elevation) are specified as a function of the Flood Design Class and the nature of the flood hazard areas (see table on page 4 of these Highlights). This comprehensive guide delves into the definition of freeboard in Apr 26, 2017 · Definition: Freeboard is the vertical distance between the crest of the embankment and the reservoir water surface. Communities with freeboard will require structures to be built a few feet above the BFE. Freeboard means the vertical distance between the lowest point on the crest of the impoundment dike and the surface of the waste contained therein. These construction choices provide (g) Freeboard shall mean the vertical clearance of the lowest structural member of the bridge superstructure above the water surface elevation of the overtopping flood. means a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. Flood plain management means the operation of an overall program of corrective and preventive measures for reducing flood damage, including but not limited to emergency preparedness plans, flood control works and flood plain management regulations. 6. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings, and Recognizing that freeboard reduces flood risk, the Federal Emergency Management Agency (FEMA, which administers the NFIP) provides substantial (sometimes more than 50 percent) reductions in flood insurance premiums for structures incorporating freeboard. Feb 15, 2020 · The summer freeboard can then be calculated from this standard freeboard and used to determine the summer loadline of the vessel. Aug 1, 2024 · The current design requirements in ASCE 7-16 for flood elevation only required designs to the 100-year flood (the 1% annual chance flood) plus some amount of freeboard. The following list of flood terms and definitions are provided to support consistent communication about flooding. Definitions Freeboard - An additional amount of height above the Base Flood Elevation used as a factor of safety (e. In flood-prone regions, the construction of elevated buildings is required, and freeboard is a key design consideration. "Freeboard" tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings Mar 6, 2024 · Freeboard, a safety factor for floodplain management, is the distance between the base flood elevation and the lowest inhabitable floor of a structure. Special flood hazard areas are areas designated on FEMA flood insurance rate maps as being subject to inundation by the flood with a one-percent chance of being equaled or exceeded in any given year. The minimum freeboard required is 3 feet above the Base Flood Elevation (BFE) all along the length of the levee, with an additional 1 foot within 100 feet of structures (such as bridges) of wherever flow is restricted, and an additional 0. Community Rating System (CRS) communities could lose points if Elevation Certificates show lowest floors Freeboard Deficient Procedure The Federal Emergency Management Agency (FEMA) has developed a new set of procedures for analyzing and mapping flood hazard on the landward side of non- accredited levee systems on Flood Insurance Rate Maps (FIRMs). 100 pp. Freeboard—a margin of safety added to the level of the base flood—definitively exceeds those minimum standards. Glossary Design Flood Elevation (DFE) Locally adopted regulatory flood elevation; it is the minimum elevation to which a structure must be elevated or floodproofed. It refers to the vertical distance between the waterline and the upper edge or deck of a vessel, structure, or embankment. g. Also referred to as Flood Protection Elevation. structure is below Freeboard, which is FEMA BFE + 1 foot), Unincorporated Lee County has flood damage prevention regulations that may affect how you repair, remodel, renovate, or add on to your building. 2-Percent-Annual-Chance Flood Approach (0. Freeboard is eleva ng a building’s lowest floor above predicted flood eleva ons by a small addi onal height (generally 1‐3 feet above Na onal Flood Insurance Program [NFIP] minimum height requirements). One such procedure, called Freeboard Deficient, applies to levee reaches that are above the Base Flood Elevation (BFE), the level that water is expected to reach during a 1-percent-annual-chance flood, but below the freeboard requirements. Flood hydrograph means a graph showing, for a given point on a stream, the discharge, height, or other characteristic of a flood as a function of time. Using Freeboard to Elevate Structures Above Predicted Floodwaters Freeboard is elevating a building’s lowest floor above predicted flood elevations by a small additional height (generally 1-3 feet above National Flood Insurance Program [NFIP] minimum height requirements). The minimum freeboard for coastal flood protection structures to be recognized on FEMA flood maps for protection against the storm surge component of the base flood shall be 2 feet above the 1-percent-annual-chance SWEL [and 1 foot above the height of the 1-percent-annual-chance wave or the maximum wave runup (whichever is greater)]. This Regulatory Flood Protection Elevation means the “ Base Flood Elevation ” plus the “Freeboard”. 3. Minimum freeboard must also be provided to prevent overtopping of a structure by wave action that may coincide with an inflow design flood. Freeboard tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings, and the hydrological effect of urbanization Jul 13, 2025 · Flooding is a persistent challenge in maritime operations, coastal infrastructure, and flood-prone areas. 1): Freeboard means a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. Albany. In some cases definitions used in NFIP regulations have been shortened or simplified. For example, Charleston now requires an additional 1’ of freeboard. Freeboard requirements differ based on municipality. Jun 8, 2017 · The National Flood Insurance Program (NFIP) offsets some of the risk faced by floodplain property owners by reducing the probability of flood damage and by providing financial compensation should flood damage occur. e. Freeboard accounts for the many unknown factors that could contribute to flooding that is higher than the BFE. 5 ft. This distance measures how much a ship is above the water and hence determines the maximum load Elevation language like freeboard goes in the Local Design Flood Elevation, not in the construction section. These savings can rapidly accumulate, especially over the life of a normal mortgage. Freeboard is an important concept for ensuring the durability and safety of structures, especially in areas prone to flooding or water-related challenges. Freeboard—the vertical distance between the water surface and the top edge of a containment structure—serves as a vital safety margin that prevents overtopping during extreme weather events or sudden inflows May 5, 2025 · Freeboard is intended to compensate for the many unknown factors that could contribute to flood heights greater than the heights calculated for a selected size flood and floodway conditions, such as the hydrological effect of urbanization of the watershed. In “Special Flood Hazard Areas” where Base Flood Elevations (BFEs) have been determined, this elevation shall be the BFE plus two (2) feet of freeboard. Freeboard is an additional amount of height above the Base Flood Elevation used as a factor of safety in determining the level at which a structure’s lowest floor must be elevated or floodproofed to be in accordance with state or community floodplain management regulations. For the purpose of administering the National Flood Insurance Program (NFIP), FEMA identifies and maps flood hazard areas nationwide by conducting flood hazard studies and publishing Flood Insurance Rate Maps (FIRMs). Most of the times it is flush to the ground level but sometimes Freeboard is a height above the 1% AEP flood level that is included in the Flood Planning Level to account for factors such as wind, waves, unforeseen blockages, other localised hydraulic effects. Jul 22, 2025 · Maintaining proper freeboard levels is a critical aspect of managing water containment systems, such as reservoirs, retention ponds, stormwater basins, and flood control structures. Regulatory Compliance: International maritime regulations require minimum freeboards for different vessel types to maintain safety standards. This elevation ensures that structures remain safe from flooding, wave action, and extreme weather conditions. Jan 10, 2025 · In construction, the term freeboard plays a crucial role, particularly in projects related to floodplain construction, water management systems, and structural safety. A part of the flood plain which, to facilitate the passage of floodwater, is kept clear of encumbrances. rpem wy0n8 z3pe aqnh 9gb6xlliq kbhdv22m n2 meuofslii ft9 dz