What is a rock face scope?

The method of installing stones through the process known as “scoping” stands as a reliable and intricate technique employed to affix stones securely to various segments of a building structure. It addresses the inherent challenge of detachment that certain construction stones may encounter over time. Notably, stones used in construction often boast a surface characterized by smoothness and polish, rendering them resistant to water infiltration. Paradoxically, this very resistance diminishes their adhesive properties, elevating the risk of these stones dislodging and separating from the building.

Particular stones, like travertine, distinguished by their heightened porosity, readily adhere to the building mortar due to the presence of perforations and voids on the stone’s rear surface. This adhesion ensures their steadfastness, preventing unintended detachment. Conversely, stones with a sleek and polished finish, such as granite, may face the prospect of detachment from the working surface due to diverse factors like seismic activity, wind forces, or the permeation of rainwater.

The term “scoping” in stone installation refers to the strategic bonding of stones to the working surface using specialized tools. This method emerges as one of the most dependable means of connecting stones to diverse elements within a building. The scoping process unfolds in diverse ways contingent on the selected method. Generally, grooves are meticulously crafted on the backside of the stone, aligning with the chosen scoping method. Subsequently, the designated tool is precisely positioned within these grooves. To ensure a secure connection, purpose-specific adhesives are then applied to bond the tool to the back of the stone. Once the tool is firmly in place, a mortar mixture is poured over the stone, seamlessly integrating it into the structure.

Several scoping methodologies exist, each tailored to the specific characteristics of the stone. Here are some prominent and essential scoping methods:

Lap Joint Scoping Method

This method involves carving the back of the stone and affixing a metal lap joint to the cut section using stone adhesive. The final step entails pouring cement mortar over the stone, securing it onto the wall.

Screw and Roller Plate Scoping Method:

Implemented when a stone is already installed, this method addresses uncertainties about its strength. A hole is drilled through the stone, and a combination of a screw and roller plate is employed to fortify its placement.

Wire Scoping Method

Also referred to as wire scoping, this technique incorporates the creation of 2mm grooves on the stone’s backside. Galvanized wires are then threaded through these grooves in a cross pattern, establishing a robust adhesion between the stone and mortar.

The advantages of stone scoping extend beyond mere installation convenience. They encompass heightened load-bearing capabilities, fortified structural integrity against natural adversities like earthquakes, and an extended lifespan for the stones adorning the building façade.