What Are Shop Drawings?
Shop drawings are detailed, fabrication ready drawings used to manufacture and install structural steel elements accurately.
Unlike design or structural drawings, shop drawings translate engineering intent into practical construction information. They show exactly how each steel member will be fabricated, assembled, and installed on site, removing ambiguity before steel reaches the workshop or the crane hook.
What Do Shop Drawings Include?
Typical structural steel shop drawings include:
- Member sizes, grades, and cut lengths
- Connection details with bolt grades, hole sizes, and weld types
- Levels, set outs, and construction tolerances
- Assembly marks and piece marks for tracking
- Erection plans showing installation sequence
- Material lists and bolt schedules
These drawings are prepared by specialist steel detailers and are used directly by fabricators and erectors to ensure steel is manufactured and installed correctly, first time.
Why Accurate Shop Drawings Matter in NZ Construction
Clear, well coordinated shop drawings:
- Reduce RFIs and site queries
- Prevent fabrication errors and material waste
- Improve installation speed and safety
- Minimise programme delays and costly rework
- Support smoother coordination between steel, concrete, and services trades
- Demonstrate compliance with NZS 3404 (Steel Structures Standard) and the New Zealand Building Code
In short, good shop drawings keep NZ construction projects moving. Poor ones create bottlenecks that ripple through the entire programme.
How Citotech Produces Build Ready Shop Drawings for NZ Projects
At Citotech Integrated Services, we produce structural steel shop drawings using Tekla Structures, one of the most advanced steel detailing platforms in the industry.
Tekla allows us to create:
- Highly accurate 3D steel models that catch clashes before fabrication
- Clear, easy to read shop drawings that fabricators can work from without queries
- Fully coordinated fabrication and erection details across every steel member
Our drawings are developed in alignment with the New Zealand Building Code (NZBC), NZS 3404, and relevant AS/NZS Standards, ensuring compliance, constructability, and confidence at every stage of your project.
By focusing on precision and coordination, we help:
- NZ fabricators manufacture with certainty, reducing shop floor errors
- Builders and contractors install efficiently on site with clear erection sequences
- Engineers and project managers avoid costly revisions and programme overruns
We support construction projects across New Zealand, from Auckland to Christchurch and everywhere in between, delivering reliable shop drawings that keep teams aligned and programmes on track.
Shop drawings are more than documentation. They are the critical link between what the engineer designed and what actually gets built on site.
When produced accurately and professionally, they reduce risk, improve fabrication efficiency, and protect your project timeline. With Tekla based steel detailing and a focus on NZ standards compliance, Citotech Integrated Services delivers shop drawings that work in the real world of New Zealand construction.
