Steel structure manufacturer since 2009 · 8 fabrication bases in China
Services
Steel erection support, from a manual to a full team on site
Most erection problems start before the steel arrives: anchor bolts out of position, no laydown area, a crane too small. This page covers what your site must have ready, what we bring, and how problems are fixed.
Laos
Erected by GGSteel
Myanmar
3 stadiums erected
Indonesia
Site construction
3 levels
Manual, supervisor, full team
Options
Three levels of support
| Manual and remote support | Site supervisors | Full erection team | |
|---|---|---|---|
| Erection manual, marking plans, bolt lists | Yes | Yes | Yes |
| Video support from our engineers | Yes | Yes | Yes |
| Supervisors on site | — | 1–3 people | Included |
| Erection crew, cranes, tools | Your contractor | Your contractor | GGSteel |
| Best for | Experienced local erectors | Local crew new to this structure | Remote sites, tight programmes |
Supervisor day rates, visa, insurance and accommodation terms: to confirm.
Responsibilities
Who does what on site
| Item | You or your contractor | GGSteel |
|---|---|---|
| Foundations and anchor bolts | Yes | Anchor bolt plan and templates |
| Site safety plan, permits | Yes (unless full team) | Method statements |
| Cranes and access | Yes (unless full team) | Lifting weights and pick points |
| Unloading and laydown | Yes | Delivery sequence by zone |
| Erection, bolting, plumbing | Your erector, or ours | Supervision and sign-off |
| Missing or wrong parts | Report with photos | Replacement or site fix |
Anchor bolts
The most common delay, and how to avoid it
Anchor bolts are set by the foundation contractor, often weeks before the steel arrives. If they are out of tolerance, the first column will not fit.
| Check | AISC 303 (USA) | Note |
|---|---|---|
| Bolts within one group, centre to centre | ±3 mm (1/8 in) | Most critical for base plate fit |
| Group centre to its intended location | ±6 mm (1/4 in) | Measured from the established column line |
| Projection above concrete | Per contract documents | Too short and nuts cannot engage |
AISC 303 values. GB 50205 and EN 1090-2 set their own limits; ACI 117 is wider than AISC, a known conflict noted by ASCC Position Statement 14.
Survey before shipping. Send us a survey of the anchor bolts before the last steel ships. We adjust base plates in the shop if needed.
Use templates. Our anchor bolt templates hold bolts in position during the pour.
If bolts are out. Options include enlarged or slotted holes with plate washers, or new post-installed anchors. Your engineer must approve each fix.
Before the steel arrives
Site checklist
- Foundations cured and surveyed
- Anchor bolt survey sent to us
- Crane access and ground bearing checked
- Laydown area near each zone
- Grout, shims and levelling tools
- Power for bolting tools
- Safety plan and permits approved
Erection sequence
A typical single-storey frame
01
Survey
Anchor bolts and levels checked.
02
First bay
Columns and rafters of a braced bay erected and plumbed.
03
Frames
Following frames tied back to the braced bay.
04
Bracing
Roof and wall bracing installed and tensioned.
05
Secondary
Purlins, girts and sag rods.
06
Envelope
Roof and wall sheets, flashings.
Pace depends on crane count, crew size and weather. Typical single-storey warehouse: 150–300 t per week per crane team.
Missing or wrong parts
What happens when something does not fit
01
Report
Photo with the member mark and the problem.
02
Diagnose
Our engineer checks the drawing, the trace log and the packing list.
03
Decide
Site fix, shop remake, or part from spare stock.
04
Supply
Our error: at our cost. Air freight policy: to confirm.
Spares ship with the steel: a percentage of bolts and small fittings, to confirm, so most small losses are fixed on the day.
Overseas erection
Where we have worked on site
Which languages do your supervisors speak?
Mandarin and English; other languages through local interpreters.
Who is responsible for site safety?
The main contractor, unless we take the full erection scope.
Can our local crew erect without a supervisor?
Yes, for simple portal frames with an experienced crew. For box columns, trusses and composite frames we recommend a supervisor.
Do you provide erection engineering for heavy lifts?
Yes, lifting plans and temporary works for our members. Crane selection stays with the crane contractor.
On site
Tell us about your site and crew
We suggest the support level with the steel quote.