01 — Changes & addenda
The addendum is
where bids are lost.
The first read of a tender is rarely the problem. The danger is the clarification round: a revised piling spec buried on page 40, a submission date moved inside a footnote, a new certificate required three days before close. Miss one and the bid is non-conforming.
The pattern we built for
On a large NL tender it is normal to receive three to six addenda, the last of them in the final week. Each one can change what you must submit — and quietly reset your plan.
Steinlog reads every version so a change on page 40 can't hide.
Addendum at 16:40. New plan by 16:41.
Every change found,
mapped, and owned.
When an addendum or a clarification answer arrives, Steinlog diffs it against the version it replaces — text and tables — then checks each change against your draft sections and open tasks. What it finds becomes work, assigned to a name, with the source page attached.
Table-aware diff
Not “something changed”.
This clause, this cell.
A word-level diff isn't enough when the change is a number in a bill of quantities or a value in a requirements table. Steinlog compares structure, so a moved row or an edited unit rate surfaces as precisely as an edited sentence.
WAS
Foundations: CFA bored piles, Ø600, min. length 18 m.
NOW
Foundations: driven precast piles, 350×350, min. length 18 m.
TOUCHES
Draft §3.2 method statement · BOQ rows 210–214 · subcontractor quote (piling)
What the assistant does not do
It flags and drafts.
You decide.
The assistant is useful precisely because its limits are hard. It reads, compares and suggests — and every suggestion carries the pages it came from. It never crosses into the work only your team is accountable for.
- ✕
Never prices your bid
No AI-generated rates, no auto-filled BOQ values.
- ✕
Never authors engineering content
Method statements and calculations are your team’s, not a model’s.
- ✕
Never submits
Steinlog does not touch the procurement portal. You submit.
- ✓
Cites every source
Each flag links to the exact page and version it came from.
The disqualification check is deterministic code — see Planning.
Changes
Never read an addendum
on your own again.
Bring a live tender with an open clarification round. We'll show you what Steinlog catches.
pilot@steinlog.com
Steinlog