Batter Board

Definition

A batter board is a temporary framework used in construction to assist in accurately locating the corners and elevations of a foundation or structure. It is crucial for maintaining proper alignment and levels during the layout phase of below-ground construction, such as foundations, excavations, and trenches.

Purpose

The primary purpose of batter boards is to provide a reference point for builders to ensure that the foundation or structure is accurately positioned and leveled according to the project plans. They are essential for maintaining the correct layout and elevations throughout the construction process, preventing costly errors and ensuring structural integrity.

Examples of Use

1. Foundation Layout: Batter boards are used to mark the exact corners and dimensions of a building's foundation, guiding the excavation and concrete pouring process.
2. Excavation Work: During excavation for basements or underground utilities, batter boards help maintain the correct depth and alignment of trenches.
3. Trench Digging: For projects requiring precise trenching, such as laying pipes or cables, batter boards ensure that the trenches are dug at the correct location and depth.
4. Road Construction: Batter boards are employed in road construction to maintain the proper elevation and alignment of the roadway.
5. Landscape Projects: In landscaping, batter boards assist in setting the correct elevations for terraces, retaining walls, and other landscape features.

Related Terms

• Stake and Line: Wooden stakes and string lines used to outline the perimeter of a construction site, often in conjunction with batter boards.
• Leveling Instrument: Tools such as laser levels, theodolites, and transits used to check and maintain proper elevations and alignments.
• Surveying: The process of measuring and mapping out the positions and elevations of land features, crucial for the accurate placement of batter boards.
• Plumb Bob: A tool used to establish a vertical reference line, ensuring that structures and foundations are perfectly upright.
• Formwork: Temporary or permanent molds used to hold concrete in place until it hardens, often aligned using batter boards.

Notes

• Batter boards are typically constructed from wooden stakes and horizontal crosspieces, creating a stable framework to which string lines can be attached.
• They should be securely anchored and precisely measured to ensure accuracy in the layout of the foundation or structure.
• Batter boards are usually set up beyond the actual construction area to avoid interference with excavation and building activities.
• Properly maintained batter boards can be reused for multiple phases of a project or for different projects altogether.
• Regular checks with leveling instruments are recommended to verify that batter boards remain in the correct position throughout the construction process.