Overview of Semi-Unitized Glazing
Semi-unitized glazing is a hybrid curtain wall system that combines elements from both unitized and stick-built systems. This innovative approach is particularly beneficial for high-rise buildings and large commercial projects, offering enhanced efficiency and aesthetic appeal.
Structure and Installation
In a semi-unitized system, the primary structural components, including vertical mullions and horizontal framing, are erected on-site. Vertical mullions are first attached to the floor slabs, followed by horizontal members that create a grid-like framework. Glass panels and spandrels (which can be glass or aluminum) are prefabricated in a factory setting and then installed into this framework on-site. The joineries and perimeter sealants are added during installation, ensuring a secure fit
Key Features
- Efficiency: The semi-unitized system significantly reduces on-site labor and assembly time due to its prefabricated components, allowing for faster construction timelines.
- Cost-Effectiveness: By combining factory assembly with on-site installation, this system minimizes material waste and errors during construction, leading to overall cost savings.
- Aesthetic Appeal: The large glass panels used in semi-unitized systems provide a sleek, modern look that enhances the building's facade. This design flexibility allows architects to incorporate various materials and finishes.
- Structural Integrity: Despite being a hybrid system, it maintains high structural performance, capable of supporting large glass panels while withstanding environmental stresses such as wind and seismic forces.
- Energy Efficiency: The glazing units are designed to meet modern energy performance standards, contributing to improved energy efficiency in buildings
Applications
Semi-unitized glazing systems are widely used in skyscrapers and commercial buildings where visual impact and structural performance are critical. They are particularly advantageous in urban settings where aesthetic considerations are paramount alongside functional requirements
