Few things frustrate a superintendent more than a trailer with internet that works fine on Monday and crawls by Wednesday. Usually the problem is not the carrier. It is that nobody estimated how much capacity the site would need before ordering the service. Jobsite demand grows as the project does, so a connection that suits a mobilization week may fall short in the middle of a build.
This guide gives you a practical way to estimate needs, choose the right type of connection, and avoid paying for far more than you use.
Start with who and what
Capacity depends on people and on what those people do. Begin by listing:
- How many people will be on the network at peak, including phones
- Which cloud apps are used daily, such as Procore, Autodesk, Microsoft 365, and timekeeping apps
- Whether cameras, drones, or sensors upload data
- Whether crews download large plan sets or models
- Whether video meetings occur from the trailer
Heavy and light users
Not all traffic is equal. Checking email or filling out a daily log uses little bandwidth. These activities use much more:
- Uploading drone footage or large photo sets
- Streaming or recording security cameras to the cloud
- Opening large BIM models
- Software updates on many laptops at once
- Video calls with several participants
A site with ten people doing light tasks may need less than a site with three people uploading camera footage all day.
Think about upload as much as download
Construction teams send a lot of data back to the office: photos, daily reports, camera streams, and scanned documents. Many consumer-grade connections have far lower upload than download speeds. If your plan has strong download but weak upload, cloud-based cameras and photo uploads will feel slow. Ask your provider for both numbers and test them on site.
Plan for peak, not average
Connectivity problems show up at specific moments, such as morning when everyone opens the same apps, or end of day when everyone uploads. Plan for those peaks. Consider a hypothetical site with fifteen staff, two cameras, and a daily drone upload. The camera and drone traffic may dominate the connection at specific times of day. Scheduling large uploads for after hours can relieve the pressure without buying a larger plan.
Match the connection to the site
Different sites favor different options:
- Fixed fiber or cable where available, usually the most stable and economical for long projects.
- Fixed wireless or 5G for sites with good coverage but no wired service.
- LTE or 5G routers for short-term or mobile setups.
- Satellite for remote sites with no terrestrial coverage.
- A combination of two connections with automatic failover for sites where downtime is expensive.
Always test signal strength at the actual trailer location before committing, since coverage maps do not account for hills, steel structures, or the exact placement of the antenna.
Reduce demand where you can
Before buying more bandwidth, look at what is consuming it.
- Set laptops and phones to update on a schedule rather than during work hours.
- Cache large plan sets locally so every user does not download the same file.
- Limit streaming and personal video on the work network by using a separate guest network.
- Lower the resolution or frame rate of cameras that do not need high detail.
- Use quality-of-service rules so video calls and cloud apps get priority.
Monitor and adjust
Once the site is running, watch real usage for the first two weeks. Many business routers and managed services show which devices and applications use the most data. Use that data to decide whether to upgrade, schedule uploads, or move a heavy user to a different connection.
Also check for data caps. Some cellular and satellite plans slow down or charge more after a threshold of use. Know what your plan allows and set alerts before you reach it, so a mid-month slowdown is not a surprise.
Build in change
Construction sites evolve. Mobilization, framing, and finish phases involve different people and tools. Plan a quick review at each major phase to see whether capacity, equipment placement, and security settings still match the site.
Where Ironfield Cyber helps
Ironfield Cyber helps contractors and energy companies select, install, and support jobsite connectivity, including LTE and 5G routers, satellite, and failover. If you are mobilizing a new project and want a connection sized to the work, we can help you estimate needs and set up a secure, supportable network from the first day.