Check the existing structure first
Before adding a floor, a crane or heavier machines, an engineer must check that the existing columns, beams and foundations can carry the extra load. Many older factories were built without full drawings, so a survey may need to measure what is actually there.
Common findings include cracked floors from heavy loads, rusting steel, weak roof purlins and wiring that has been extended many times. Fixing these as part of the expansion avoids problems later.
- Foundations and columns checked for new loads
- Roof condition and drainage
- Floor cracks and settlement
- Electrical capacity and safety
Working around production
Plan the work in phases. Move machines temporarily, separate work zones with barriers and schedule noisy or dusty work for shift changes or holidays where possible.
Agree safety rules with the contractor: who can enter work areas, how lifting operations are controlled and how fire risks from welding and cutting are managed near production.
Keep exits and fire routes open throughout. A busy factory under renovation is exactly when an emergency is most dangerous.
Talk to your workers and supervisors before work begins. Explain which areas will be closed, how routes will change and who to contact if something looks unsafe. People on the shop floor often spot practical problems, such as a blocked forklift route or a missing light, that are easy to fix once someone raises them. Keep the site clean at the end of each day so production can restart safely the next morning.
Approvals, contracts and quality
Extensions and structural changes need approved drawings signed by a PCATP architect and PEC engineer. Approval usually comes from the estate management inside industrial estates, or from LDA, a TMA or another authority elsewhere. Environmental and fire safety requirements may also apply. Confirm the current rules before work starts.
Your contract should cover each phase separately, with clear scope and payments linked to completed phases. Agree how hidden problems found during work will be priced and approved.
Ask for photos and test records of hidden work, such as foundations for new columns and connections to existing steel.
Renovation is also a good moment to rethink the layout. Moving a store closer to the line it feeds, or relocating dispatch to a new loading bay, can save more time each day than the extra floor area itself. Ask your designer to look at the whole site, not just the new hall.