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

10 pages•Published: July 23, 2025

Abstract

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.

Keyphrases: construction delays, efficiency, errors and omissions, mep

In: Wesley Collins, Anthony J. Perrenoud and John Posillico (editors). Proceedings of Associated Schools of Construction 61st Annual International Conference, vol 6, pages 581-590.

Links:	https://easychair.org/publications/paper/7tXq
	https://doi.org/10.29007/hqcl

BibTeX entry

@inproceedings{ASC2025:Common_Errors_Omissions_Mechanical,
  author    = {Amani Qasrawi and Tulio Sulbaran},
  title     = {Common Errors and Omissions in Mechanical, Electrical, and Plumbing Systems Concrete Slabs Rough-In},
  booktitle = {Proceedings of Associated Schools of Construction 61st Annual International Conference},
  editor    = {Wesley Collins and Anthony J. Perrenoud and John Posillico},
  series    = {EPiC Series in Built Environment},
  volume    = {6},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2632-881X},
  url       = {/publications/paper/7tXq},
  doi       = {10.29007/hqcl},
  pages     = {581-590},
  year      = {2025}}

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