Category: Design
Prepared by Eng. Ahmed Fathy, Projects Manager ·
Definition
MEP drawings cover electrical work (lighting, power and panels), plumbing (supply and drainage), HVAC and ventilation, fire alarm and fire fighting, and low current systems, with routes, sizes and equipment schedules.
Why it matters on a project
They are a large share of finishing cost, and their clashes with structure or ceilings are a leading cause of rework. Early coordination avoids breaking walls after plaster.
Measurement and pricing
Cables and pipes in linear metres, outlets and units by number, major equipment by number with its specification.
Common mistake
Running pipes and cables before the ceiling and interior design drawings are approved, so outlets end up in the wrong places.
Frequently asked questions
When are MEP drawings prepared?
After the preliminary architecture is approved and alongside the structure, then coordinated with the interior design before construction.
Are design drawings enough to build from?
Usually coordinated shop drawings are needed to show exact routes and levels in ceilings.
Related terms
- Construction drawingsDetailed drawings used to build the work on site after design approval, including dimensions, levels and details.
- Clash detectionChecking models to find where disciplines collide before construction.
- Shop drawingsDrawings prepared by the contractor or fabricator showing how items are made and installed, approved by the consultant before execution.
- Suspended (false) ceilingA secondary ceiling hung below the structural slab to conceal services and improve acoustics and lighting.
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