Building and Construction

Construction Data Analytics: Project Metrics, Performance Benchmarking, Predictive Models, and Data-Driven Decision Making

Construction Data Analytics Data analytics in construction uses project data to improve decision-making and performance. The project data from cost estimates, schedules, field reports, and equipment tracking systems provides a rich source of information for analysis. Descriptive analytics summarizes historical performance using metrics such as cost variance, schedule variance, productivity rates, and safety incident rates. […]

Building Demolition and Implosion: Mechanical Demolition Methods, Explosive Implosion, and Debris Management

Building Demolition Methods Building demolition is the process of dismantling or destroying a building structure. The demolition method is selected based on the building size, location, structural system, and environmental constraints. Mechanical demolition using excavators with hydraulic shears, hammers, and crushers is the most common method for smaller buildings. The equipment works from the top

Flood Frequency Analysis: Statistical Methods, Hydrologic Design, Urban Stormwater, and NRCS Curve Number Method

Hydrology and Flood Frequency Analysis Flood frequency analysis uses statistical methods to estimate the probability and magnitude of flood events for the design of hydraulic structures. The annual maximum flood series records the highest instantaneous flow in each year of the historical record. The flood frequency curve plots the flood magnitude against the recurrence interval

Reinforced Earth and Soil Nailing: Mechanically Stabilized Earth Walls and Slope Stabilization Techniques

Reinforced Earth and Soil Nailing Reinforced earth is a construction technique that uses tensile reinforcement within the soil mass to resist lateral earth pressures. The reinforcing elements are typically galvanized steel strips or geosynthetic sheets placed horizontally within the soil at regular vertical intervals. The friction between the soil and the reinforcement transfers the tensile

Construction Bonds and Surety: Bid Bonds, Performance Bonds, Payment Bonds, and Claims Process

Construction Bonds and Surety Construction bonds are three-party agreements between the owner, the contractor, and the surety company that guarantee the contractor performance and payment obligations. The bid bond guarantees that the contractor will enter into the contract if awarded the project and will provide the required performance and payment bonds. The bid bond amount

Structural Glass Engineering: Glass Fins, Beams, Bolted Connections, and Facade Systems for Modern Buildings

Structural Glass Design Structural glass systems use glass as a load-bearing element in buildings, typically for fins, beams, and columns that support glass facades and canopies. The structural glass must be laminated with interlayers of polyvinyl butyral or SentryGlas to provide post-breakage strength. The design of structural glass elements must consider the tensile strength of

Trenchless Technology: Horizontal Directional Drilling, Pipe Bursting, and Cured-in-Place Pipe for Utility Installation

Trenchless Technology Trenchless technology methods install and rehabilitate underground utilities without the disruption of open trench excavation. Horizontal directional drilling uses a drilling rig to bore a pilot hole along a curved path between two surface points. The pilot hole is enlarged by back-reaming to the required diameter, and the utility pipe is pulled through

Building Security Systems: Access Control, Video Surveillance, Intrusion Detection, and Integrated Security Management

Security System Design Building security systems protect occupants and assets through access control, video surveillance, and intrusion detection. The access control system uses card readers, biometric scanners, or keypad entry to control entry to secured areas. The system maintains a database of authorized users and their access privileges. The video surveillance system uses cameras positioned

Building Commissioning: Testing, Adjusting, and Balancing of HVAC Systems for Optimal Performance

Commissioning Process Building commissioning verifies that all building systems are installed, tested, and capable of operating according to the design intent. The commissioning process begins during the design phase with the development of the commissioning plan. The plan specifies the systems to be commissioned, the testing procedures, and the acceptance criteria. The TAB process for

Curtain Wall Systems: Aluminum Frame, Glass, and Panel Systems for Building Exterior Enclosures

Curtain Wall Design Curtain wall systems are non-structural exterior cladding systems that are attached to the building structure. The curtain wall carries its own weight and the wind loads but does not support any structural loads from the building. The aluminum frame system consists of vertical mullions and horizontal transoms that support the glass or