You're right, having access to run conduits into a shaft at each floor doesn't automatically grant permission or mean you can work within the shaft. Here's a breakdown of what determines whether you need to enter the shaft and related considerations

Factors Determining if Shaft Entry is Required:
Conduit Routing/Placement



Straight, Vertical Runs

If the conduit can be fed straight down/up the shaft with minimal manipulation or supports needed within the shaft itself, you might be able to avoid entry (especially for smaller conduits). You'd need a way to secure it temporarily from the floor above as you feed it down.

Offsets, Bends, or Complex Routing

Any deviation from a straight line (offsets to avoid obstructions, bends to route around other services) virtually guarantees you'll need to be inside the shaft to make those bends and secure the conduit properly.

Junction Boxes or Pull Boxes

If junction boxes or pull boxes need to be installed within the shaft, entry is mandatory.

Securing/Supporting the Conduit

Conduits MUST be securely supported at code-compliant intervals. If the existing shaft doesn't already have support infrastructure, you'll almost certainly need to be inside the shaft to install the supports (strut, clamps, etc.).

Shaft Size



Small Shafts

A narrow shaft might not physically allow someone to enter and work safely, even if you wanted to.

Large Shafts

Larger shafts don't automatically mean you have to enter, but they offer more space and flexibility, which could make in-shaft work the easiest/safest approach.

Existing Conditions within the Shaft



Other Utilities

The presence of other utilities (pipes, ductwork, electrical panels, etc.) within the shaft can create obstacles and make it difficult or impossible to work from above/below without entering.

Obstructions

Unforeseen obstructions within the shaft (old abandoned equipment, debris, structural elements) can necessitate adjustments and in-shaft work.

Conduit Size and Type



Large Diameter or Rigid Conduit

Larger, heavier conduits are much harder to manipulate and secure from outside the shaft. Entry is more likely.

Flexible Conduit

Flexible conduit might allow for some degree of manipulation from outside the shaft, but securing it properly to prevent sagging would still likely require entry.

Safety Considerations



Confined Space

Most shafts will be considered Confined Spaces and OSHA regulations will apply. Confined Space procedures must be followed, including monitoring the atmosphere and having a safety attendant outside the shaft.

Fall Protection

If working from a height inside the shaft, appropriate fall protection measures (harnesses, lifelines, etc.) will be required.

Lighting

Adequate lighting inside the shaft is essential for safe and accurate work.

Hazardous Materials

The shaft may contain asbestos, lead paint, or other hazardous materials. Proper testing and abatement procedures may be required.

Project Specifications and Local Codes



Drawings and Specifications

The project drawings and specifications might explicitly state whether in-shaft work is permitted or required. Pay close attention to these documents.

Local Electrical Codes and Building Codes

These codes will dictate how conduits must be supported, grounded, and installed, which may influence whether shaft entry is necessary.

Assuming No Entry is Allowed (and how to potentially work around it)

If you are not permitted to enter the shaft:1.

Pre-Planning is Crucial

Meticulous planning and surveying of the shaft are absolutely essential. You'll need very accurate measurements and a clear understanding of existing conditions. Consider using drones or remote cameras to inspect the shaft thoroughly.2.

Prefabrication

Prefabricate as much of the conduit run as possible in manageable sections. This reduces the amount of work needed inside the shaft.3.

Specialized Tools

Investigate specialized tools for installing conduit supports from a distance or using long reach tools.4.

Temporary Support System

Devise a temporary support system to hold the conduit in place while the permanent supports are installed.5.

Consider Alternatives

Is it possible to reroute the conduit outside the shaft?

Important Considerations



Permission/Approvals

Before any work begins, obtain explicit permission and approvals from the building owner, facilities manager, or relevant authority for the proposed conduit installation method, including whether shaft entry is permitted. Document everything in writing.

Safety First

Always prioritize safety. If there is any doubt about the safety of working from outside the shaft, it is better to enter the shaft (with appropriate safety precautions) or to explore alternative routing options.*

Consult Experts: Consult with experienced electrical contractors, engineers, and safety professionals to determine the safest and most efficient approach for the conduit installation.In conclusion, while access at each floor is convenient, it rarely eliminates the need to enter the shaft. The specific requirements of the job, safety concerns, and code compliance ultimately dictate whether shaft entry is necessary. Always err on the side of safety and seek expert advice when in doubt. Flag for review