What additional support can be placed under a buried mortar?

• A. Concrete block
• B. Insulation foam
• C. Steel plate
• D. Wood or flat rock

Answer: (D)

Stability and even weight distribution are crucial when a mortar is buried. A solid, level base helps prevent movement as the ground settles and keeps the mortar aligned, reducing the risk of misfire or shifting during handling. Wood or flat rock provide a simple, readily available base that distributes the load evenly and can be adjusted or removed as needed. They’re practical on-site and less likely to cause damage or complications than heavier or less stable options. In contrast, materials like a concrete block can be hard to position and adjust, a steel plate might introduce heat or setup challenges, and insulation foam lacks the structural strength to support the mortar.