Large stone sculptures, whether ancient or contemporary, often require structural reinforcements to maintain stability and prevent damage over time. The most common techniques include internal metal armatures, such as stainless steel or bronze rods, which are embedded within the stone to provide core support. For outdoor sculptures, non-corrosive materials like titanium or fiberglass are preferred to withstand weathering.

Another method involves the use of epoxy resins or adhesives to bond fractured sections or reinforce weak areas. In some cases, external supports like braces or pedestals are employed to distribute weight evenly. Modern advancements also include carbon fiber wraps, which add strength without altering the sculpture's appearance.

Historically, artists used dowels and tenons to join stone blocks, a technique seen in classical monuments. Today, conservationists combine traditional and innovative methods to preserve these artworks for future generations. Proper reinforcement ensures both artistic integrity and structural durability.