Common Errors and Omissions in Mechanical, Electrical, and Plumbing Systems Concrete Slabs Rough-In

Mechanical, Electrical, and Plumbing (MEP) systems rough-in concrete slabs are crucial for the proper placement of MEP components across the building. The three most common rough-in components include a- Embedded items (anchors or inserts), b- Slab space created with form (blockouts or bulkheads), and c- Trade place tube (Sleeves). However, the placement of these MEP rough-in components is prone to errors and omissions (E&O). The four most common issues associated with E&O are i- Dimensions, ii- Position, iii- Securing errors, and iv- Complete omissions. These issues can lead to delays, rework, and safety hazards. Unfortunately, there is limited research on quantifying the occurrence rate of this E&O. Thus, the problem that this research addresses is the lack of literature on E&O MEP rough-ins. Therefore, the objective of this paper is to identify and analyze the most frequent errors and omissions (E&O) that occur during MEP rough-in installation in concrete slabs. The methodology employed in this paper was quantitative, utilizing three descriptive analysis methods: ( 1) Frequency Distributions, (2) Relative Frequency Distribution, and (3) Weighted Numbers. The results indicate that dimension and positioning errors, particularly for components such as Embedded items (anchors or inserts) and trade-placed tubes (Sleeves), are consistently problematic.