ERECTION ENGINEERING & HEAVY LIFT
EE&HL Newsletter
Commercial intelligence for erection engineering & heavy lift
Issue 1 | May 2026 | Biweekly | Free & Paid
Marco Torri | Founder, EE&HL
ISSUE 01 - LAUNCH EDITION
The River Did What the Contract Couldn't
Sequence intelligence, commercial visibility, and a 210-metre gantry that could not lie
Section 01 | ✓ Free |
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The Project
4.8 km Main deck | 121 piles Up to 85m deep | 1,263 segments Precast, 4m each | $962M total cost Oct 1994-Jun 1998 |
(JMBA scope, incl. river training & approaches. Main deck 5.63 km per ICE)
ERECTION SEQUENCE - GANTRY ADVANCE DEPENDENCY
The Jamuna River in Bangladesh forms part of the Brahmaputra system, one of the largest river systems in the world by discharge volume. Within Bangladesh, it has a flood width of up to 14 kilometres at the bridge site, with the full braided belt reaching up to 20 kilometres in places. It braids - flowing through dozens of shifting channels separated by temporary sand islands that move hundreds of metres in a single monsoon season. The riverbed beneath it is soft alluvial sand, kilometres deep, with no stable foundation layer reachable by conventional means.
In 1994, contracts were awarded to build a 4.8-kilometre bridge across it.
The numbers were immediately formidable. 50 piers. 121 steel tubular piles - up to 3.15 metres in diameter, driven 80 to 85 metres into a riverbed capable of liquefying under seismic load. Pile caps precast onshore, floated out on barges, positioned in up to 50 metres of flowing water, then infilled with concrete. Offshore piling technology - developed for North Sea conditions - adapted for a river. Pile driving started in October 1995. It took 9 months to drive all 121 piles across a braided river that could not be stopped, diverted, or controlled. Only managed.
The superstructure erection used a 210-metre steel truss gantry (TYLin Group, designer of record; Butterley Engineering, the manufacturer, records ~200 m) advancing pier by pier across 49 spans. 1,263 precast segments - each 4 metres long - erected by balanced cantilever. Each cantilever: 12 segments from a pierhead. Each span: approximately 100 metres. 7 structural modules of roughly 700 metres each. Total construction period: October 1994 to June 1998. 3 years and 8 months.
The gantry could not skip a pier. It could not work out of sequence. It could not advance until the next pier was ready to receive it - structurally complete, pile cap set, pier shaft constructed, pierhead formed and cured to specification.
And there was the problem - and the solution - simultaneously.
The river decided when each pier was ready. Not the programme. Not the contract.
The river.
If the barge carrying a pile cap could not hold position in the current, the pier waited. If scour eroded a previously certified founding level, the pier waited. If the monsoon closed the river to marine plants, every pier on the active front waited. And while each pier waited, the gantry waited. The daily cost of the gantry - mobilised, staffed, insured, financed - ran regardless.
💡 The Core Insight
On the Jamuna Bridge, the erection sequence was a perfect commercial document from the first day it was drawn. Every engineer on site, every subcontractor, every client representative knew exactly which pier had to be ready before the gantry could move. The dependency was not written in the contract. It was written in the physics of the structure. Nobody disputed it. Nobody needed to. The river enforced it.
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Section 02 | The Pattern |
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The Pattern
Here is what the Jamuna Bridge reveals that most project post-mortems don't.
The commercial discipline on that project did not come from a smarter contract. It did not come from better project controls. It did not come from a more experienced commercial team.
It came from a river — that made the dependency between pier delivery and gantry advance physically, visibly, and undeniably clear to every person on the project.
⚠️ The Daily Economics
A 210-metre erection gantry of this specification carries a daily standby cost your commercial manager knows and your engineering team does not. That asymmetry — the gap between who incurs the cost and who knows the number — is the pattern. It repeats on every project where the erection plant is mobilised, and decisions are made by people who do not see the daily rate.
⚙️ Erection Sequence — Gantry Advance Dependency
On most projects, that same connection is invisible.
The erection sequence is issued. The gantry is mobilised. The pier contractor is working to a programme. And somewhere in the project, a decision is made — by a designer, a client representative, a third-party verifier — that adds days to a critical dependency nobody in that meeting was watching.
Pier 14 is not ready. The claim follows.
It follows because the daily cost of the gantry at Pier 14 was never visible to the person who made the decision that delayed Pier 14.
🔄 The Pattern That Repeats
On river crossings in difficult hydraulic environments — the Jamuna, the Padma, the Rio Negro — the gantry standby cost is visible by necessity. The river makes it so.
On a land-based erection scope with a 500-tonne crane mobilised 6 weeks ago, charged at a daily rate that your commercial manager knows and your engineering team doesn't — that same cost is invisible to the 4 or 5 people whose decisions determine whether it is incurred.
⚡ The Mechanism
Physical visibility of commercial consequence produces better decisions than contractual allocation of risk. Every time.
Section 03 | The Question |
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The Question
🎯 The Question for Your Next Project
"On your current project — what makes the daily standby cost of your primary erection plant visible to the people who make the decisions that determine whether it is incurred?"
Not theoretically knowable. Not stored in a document. Visible — present and specific — in the room where engineering approvals are granted, where design changes are authorised, where access areas are released.
Test it against these four scenarios. Each one is a real pattern. Any senior engineer or PM will recognise them immediately.
SCENARIO 01 — THE TEMPORARY WORKS APPROVAL DELAY |
A designer requests 8 additional days to complete a temporary works check before approving the lift study. The crane is on standby. The designer does not know the daily rate. Nobody in that conversation mentioned it. 💸 8 days x [your crane standby rate] = your exposure - plus a variation claim that ran 14 months |
SCENARIO 02 — THE ACCESS AREA RELEASE |
A client representative delays releasing an access area by 6 days pending internal sign-off. The erection gantry is already on pier. The client representative does not know what a gantry costs per day at rest. 💸 6 days x [your gantry standby rate] = your exposure - plus full remobilisation when the weather window closed |
SCENARIO 03 — THE THREE-PARTY APPROVAL CHAIN |
An engineering approval chain - client, designer, third-party verifier - adds 11 days to a lift study review. Each party reviews sequentially. The vessel day-rate is running. None of the three parties knew the others were also reviewing, or what the vessel was costing while they were. 💸 11 days x [your vessel day-rate] = your exposure - season abandoned |
SCENARIO 04 — THE VERBAL SEQUENCE CHANGE |
A sequence change is verbally agreed on site to accommodate a civil works interface. The crane standby period extends by 9 days. The agreement was made by two engineers who had the authority to change the sequence and no visibility of the rate running against it. 💸 9 days x [your crane standby rate] = your exposure - variation disputed, settled at a fraction of cost |
In all four scenarios the technical decisions were reasonable. The commercial consequences were invisible to the people who made them.
The scenarios above are composite illustrations of patterns recognisable across erection engineering and heavy lift. They are not drawn from specific projects or clients.
THE VISIBILITY TEST
X "The commercial manager has it in a spreadsheet." A spreadsheet one person reads is not visibility. It is storage. |
X "It was discussed at the kick-off meeting." A number mentioned once at the beginning of a project is not visibility. It is a fact that will be forgotten before the first sequence review. |
X "It's in the contract preliminaries." A rate buried in a contract document that engineers don't read is not visibility. It is a future exhibit in a dispute. |
OK "Visibility means the approval holder knows the number before they make the decision" - not after they learn the consequence. The engineer signing off the temporary works. The designer releasing the lift study. The client representative releasing the access area. |
🎯 The One Action — Do This in Your Next Meeting
The mechanism is simpler than any process redesign. In the next sequence review meeting you attend — any project, any role — open with this sentence:
"The daily standby cost of the primary erection plant is [your rate] per day. This figure applies to every decision we make in this meeting that affects the erection sequence."
Read it out. Leave it on the screen. Do not move past it. Then run the meeting.
The Jamuna had a river that enforced visibility through physics.
On your project, the number has to perform the same function deliberately.
Marco Torri
Founder, EE&HL Network | Commercial intelligence for erection engineering & heavy lift
Sources: ICE, TYLin Group, Asian Development Bank, Banglapedia, BSF.org.bd, Wikipedia
Diagrams: Original - EE&HL Network 2026