# AHU (Air Handling Unit): Mixes fresh and return air to cool, filter, and circulate air in a building. hashtag # FAHU (Fresh Air Handling Unit): Supplies 100% fresh outdoor air; no return air. hashtag # OAHU (Outside Air Handling Unit): Handles 100% outside air, usually for large capacities. hashtag # MAHU (Make-Up Air Handling Unit): Replaces exhausted air and maintains pressure balance. hashtag # PAHU (Pre-Conditioned Air Handling Unit): Pre-cools or pre-heats fresh air before it enters AHU/FCU. hashtag # DX AHU (Direct Expansion AHU): Uses refrigerant coils; no chiller required. Hygienic AHU: Designed for clean areas with hashtag # HEPA filtration and hygienic construction. hashtag # Heat Recovery AHU: Recovers energy from exhaust air to reduce power consumption. Activate to view larger image,
Understanding their differences is crucial for professionals involved in construction and infrastructure projects.
While Quality Assurance (QA) and Quality Control (QC) are frequently used together in civil engineering, they represent distinct processes. Understanding their differences is crucial for professionals involved in construction and infrastructure projects. Quality Assurance (QA) is process focused. It is about planning the right systems before work starts. This includes approved method statements, inspection and test plans, checklists, and procedures. The goal is to prevent defects by setting the correct process from the beginning. Quality Control (QC) is product focused. It is about checking the actual work and materials on site. It includes inspections, site tests, material tests, and workmanship checks to confirm everything meets drawings and specifications. Simple way to remember it: QA= Plan and prevent mistakes QC=Check and correct mistakes Strong QA reduces the number of QC issues. Both are essential for safe, compliant, and high-quality project delivery. Activate to view la...