When establishing batter boards for a foundation layout, what is the primary purpose of setting them at least 4 feet away from the proposed excavation lines?
Correct Answer
D) To prevent disturbance during excavation while maintaining reference points
Batter boards must be set back far enough to avoid disturbance during excavation while serving as permanent reference points for layout strings and measurements throughout construction.
Why This Is the Correct Answer
Batter boards serve as critical reference points that must remain undisturbed throughout the entire construction process to maintain accurate layout measurements. Setting them at least 4 feet from excavation lines ensures they won't be damaged or moved during digging operations while keeping the layout strings and measurements intact. This distance provides a safety buffer that protects these essential surveying references from construction activities. The primary function is maintaining the integrity of the foundation layout system, not just providing workspace or meeting regulations.
Why the Other Options Are Wrong
Option B: To provide adequate workspace for equipment operation
Soil stockpiling location is determined by site logistics and space availability, not batter board placement. The batter boards' position is specifically about maintaining survey references, not accommodating excavated material storage.
Option C: To comply with OSHA setback requirements
OSHA setback requirements relate to worker safety near excavations, not the positioning of batter boards. The 4-foot distance is a construction practice for maintaining layout accuracy, not an OSHA regulation.
Memory Technique
Think 'BATTER BOARDS = BETTER SAFE' - keep them far enough away to stay safe from excavation damage while maintaining your layout references.
Reference Hint
Look up foundation layout and site preparation sections in construction management or surveying chapters of your reference materials.
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