Professional Advice: Upgrading Old Buildings with Lightweight Steel Systems.

Focusing on 'Professional Advice: Upgrading Old Buildings with Lightweight Steel Systems.', this article is organized in the order of 'problem identification—materials and construction—construction control—acceptance and maintenance', providing directly executable parameters, methods, and checklists, making it convenient for design, procurement, construction, and operation & maintenance teams to directly reference on-site management.

1. Investigation Before Existing Building Renovation

Before starting a renovation project, the original structure, pipelines, and base conditions should be investigated to confirm ceiling height, load capacity margin, and the scope of demolition. Blindly applying the practices of new construction projects can easily lead to height conflicts and structural overload.

2. Demolition and Structural Review

Before demolition, confirm the scope of non-load-bearing components and retain the original fire partitions. The load of newly added partitions and ceilings must be reviewed by a structural professional, and heavy equipment should have separate support.

3. Pipeline and Equipment Update

• Use existing cable trays and pipeline paths to reduce the amount of demolition and modification.
• Provide reserved maintenance space and independent suspension points for new equipment.
• Rearrange the positions of air outlets and lighting according to the new layout.
• Seal existing passage holes to maintain fire integrity.

4. Zoned Construction and Finished Product Protection

Occupied or in-use buildings should be constructed in zones, with temporary isolation and dust control measures, noise control during specific periods, and protection for completed floors and equipment.

5. Renovation Acceptance

• Verify the renovation scope against the original design documents.
• Inspect the fire and soundproof performance of newly added systems.
• Check the operation of equipment and accessibility for maintenance.
• Retain as-built drawings and acceptance records.

The key to renovation projects is respecting the existing conditions. Investigation, review, zoned construction, and acceptance form a closed loop, ensuring the renovation does not leave hidden risks.