Methods and apparatuses for constructing high-rise buildings

A lock for securing a structural assembly having a primary beam usable for constructing a high-rise building having a building core wall defining an outer face, the building also having a roof and floor levels, the lock comprising:

• a fixed bracket configured to be rigidly coupled to the primary beam of the structural assembly;
• a structural pin;
• a movable component connected to the fixed bracket by the structural pin, the moveable component having a center of gravity offset from the structural pin to enable vertical rotation of the moveable component around the structural pin due to gravitational force;
• a bearing surface, configured to be in direct contact with the outer face of the building core wall during raising of the structural assembly;
• and
• a steel component forming a recessed pocket, the steel component embedded in the building core wall at predetermined positions and elevations corresponding to the roof and floor levels, the recessed pocket being configured to receive the moveable component of the lock if the structural assembly reaches one of the predetermined positions;
• wherein the moveable component is configured to engage with and disengage from the steel component in the building core wall as the structural assembly rises, enabling temporary support and securement of the structural assembly at the one of the predetermined positions during construction.