Limits

Every number on this page is a limit the product actually enforces. Where a limit is enforced on the server as well as in the browser, exceeding it fails the request rather than silently truncating your data.

Counts described as "per project" are hard caps on how many records a project can hold. Counts described as "per page" are how many rows one request returns; the list keeps paging past them.

Uploads

Limit	Value	Where
File size, Documents	500 MB	Per file
Files per batch, Documents	50	Files past the cap are named, not dropped silently
Files uploading at once, Documents	3	The rest queue
Accepted extensions, Documents	20	See File types
File size, STRUX attachments	100 MB	Composer and mobile
Accepted extensions, STRUX attachments	6	pdf jpg jpeg png tiff tif
Drawing set upload	PDF only	No size check is applied on this surface
Photo size	64 MB	Per photo
Photos per batch	200	4 upload at once
Voice memo size	128 MB	Daily logs
Voice memo sent for transcription	32 MB	Daily logs
Upload link validity	30 minutes	The signed upload window. A transfer that outruns it fails, which is why the 500 MB cap exists

Documents and processing

Limit	Value
Pages read for text, specifications	100
Pages read for text, everything else	10
Pages read by the vision model	1
Reviewers per document	50
Configured document codes per organization	40
Configured status codes per organization	40
Document code length	12 characters
Document code label length	60 characters
Autodesk import	250 files per import
Manual Sync now	One per 30 seconds per project

The Documents surface is desktop only. Below 768 px wide it is replaced by a "Best viewed on desktop" card.

Drawings and sheets

Limit	Value
Sheets per drawing set	1,000
Revisions per drawing	200
Revision number	999
Sheets per register page	200
Drawings compared in one set comparison	2,000
Sheet search query	120 characters
Sheet text matches returned	50
Points in one ink markup stroke	2,000
Text in one markup	500 characters
Points in one measurement path	50
Note on an annotation	2,000 characters
Sheet links per page	200
Markups returned per query	2,000
Pins carried forward to a new revision	500
Markups carried forward to a new revision	1,000

Specifications

Limit	Value
Import cost	$0.012 per page, charged to the project's credits

Import is metered. The confirm dialog states the page count and the estimate before you commit, and credits are deducted as each section completes.

STRUX

Limit	Value
Conversation history kept	20 turns
Turns replayed as follow-up context	The last 4 completed turns
Time limit on one question	5 minutes, after which the request is abandoned with an error
Investigate question	4,000 characters
Attachment size	100 MB
Attachment types	pdf jpg jpeg png tiff tif
Anonymous demo questions	10 per IP address per UTC day

History is held in the browser. It does not survive a reload.

STRUX Agents

Limit	Value
Agent name	80 characters
Agent description	2,000 characters
SOP text	20,000 characters
Collectors per agent	12
Compose prompt	8,000 characters
Recipient allowlist	100 addresses
Message body	20,000 characters
Default credit budget per run	12,000 credits
Default advisor calls per run	2
Default run timeout	300 seconds
Maximum credit budget you may set	50,000 credits
Maximum advisor calls you may set	20
Maximum run timeout you may set	900 seconds

The three defaults are what a new agent gets. The three maximums are the ceilings the form accepts if you raise them.

VANTAGE

Limit	Value
Runs in flight	2 per user per project, shared between checklist runs and Investigate runs
Items per checklist	50
Revisions kept on a checklist	20
Run record retention	90 days
Investigate question	4,000 characters
Run with no progress	Marked Failed after 10 minutes
Run that never starts	Marked Failed after 30 minutes in Queued
Single engine execution	14 minutes
Dry runs per authoring session	10

Field operations

RFIs

Limit	Value
Attachments per RFI	25
Rows in an exported RFI log	2,000
Revision cycles	20
Attachment file name	300 characters
Custom field value	255 characters
Number prefix	30 characters

Submittals

Limit	Value
Submittals per project	5,000
Rows per page	200
Attachments per submittal	50
Status aliases per status	12
Title	300 characters
Description	8,000 characters

Transmittals

Limit	Value
Recipients per transmittal	25
Items per transmittal	200
Transmittals per project	1,000
Copies of one item	999

Recipients are project directory contacts. There is no free-text address field, so a transmittal can only go to someone already in the directory.

Daily logs

Limit	Value
Sub-logs per day	500
Attachments per sub-log	25
Comments per sub-log	100
Comment body	4,000 characters
Photo evidence rows	60
Scheduled work rows	60
AI parses of captured text	30 per day
Captured text	8,000 characters
Delay types per organization	40
Delay type label	60 characters
Rows per register page	200

One daily log per project per date. Completing it requires the fixed attestation "I acknowledge this report is accurate", which is stored on the record.

Photos

Limit	Value
Photo size	64 MB
Photos per batch	200
Photos per auto-tag batch	12
Trades assigned per photo	3
Photos per page	200

Safety

Limit	Value
Incidents per project	5,000
Toolbox talks per project	5,000
People per incident	50
Witness statements per incident	50
Corrective actions per incident	100
Attendees per toolbox talk	250

Inspections

Limit	Value
Inspections per project	5,000
Signatures per inspection	50
Activity rows per inspection	1,000
Items stamped in one bulk action	100
Conditions per item	4
Sections per template	100
Items per section	1,000
Items per template	2,500
Templates per organization	2,000
Comment	4,000 characters
Rows per page	200

Punch list

Limit	Value
Items per project	5,000
Attachments per item	100
Comments per item	500
Items in one send-all	500
Image sent for AI description	4 MB
Rows per page	200

Observations

Limit	Value
Related items per observation	50
Items in one bulk action	200
Title	500 characters
Description	10,000 characters
Comment	10,000 characters
Image sent for AI drafting	4 MB

Meetings

Limit	Value
Categories per meeting	100
Business items per meeting	500
Tasks per meeting	500
Attendees per meeting	500
AI action-item proposals	25

Attendance is editable only in Minutes mode.

Schedule

Limit	Value
Rows in one import	20,000
Activities imported from an XER file	20,000
Activity duration	50,000 days
Dependency lag	3,650 days
Activities on the risk panel	30
Open items sent to the risk model	40
Activity name	300 characters
Activity description	2,000 characters
Activity notes	5,000 characters
WBS code	60 characters
Activities per page	500
Look-ahead plans per project	500
Tasks per look-ahead plan	1,000

Cost and contracts

Covering the LEDGER modules.

Limit	Value
Contracts per project	4,000
Schedule-of-values lines per contract	500
Amendments per contract	500
Commitments per project	2,000
Lines per commitment	500
Change orders per commitment	500
Lien waiver releases per project	100
Change rows per project	8,000
Lines per potential change order	500
Markups referenced per potential change order	20
T&M tickets referenced per change	200
Files referenced per change	200
Change orders promoted in one action	100
T&M tickets per project	5,000
Lines per T&M collection	200
Signatures per T&M ticket	40
Direct costs per project	20,000
Direct-cost rows per import batch	50
Hours on one direct-cost row	100,000
Cost-code segments	13 total, 10 of them custom
Segment codes per organization	10,000
Export records per batch	2,000
Export batches per project	500

File caps on the AI extraction helpers:

Limit	Value
Contract PDF sent for extraction	4 MB
Contract terms document	3.9 MB, first 100 pages
Certificate of insurance	10 MB
Receipt	10 MB
Commitment document	First 60 pages

Projects, people, and the directory

Limit	Value
Members per project	500
Members added in one bulk action	50
Directory contacts per project	2,000
Phone numbers per contact	5
Locations per project	5,000
Vendors per organization	2,000
Documents per vendor	500
Contacts per vendor	20
Projects on the portfolio view	250
Saved dashboard layout	16 KB
Global search results	25

Account and access

Limit	Value
Password minimum, most accounts	8 characters
Password minimum, accounts created from an invitation	12 characters
Password composition	Lowercase, uppercase, digit, and symbol, all required
Sign-in session	Up to 7 days before you must sign in again
Access token lifetime	60 minutes, refreshed silently
Invitation validity	7 days
Invitation resends by an admin	3 per 24 hours, and they do not extend the original expiry
Invitation resends requested by the invitee	1 per hour, and this does issue a fresh 7-day link
Verification code	6 digits
Audit log retention	2 years

What happens when you hit a limit

Struxen refuses the operation and says which limit stopped it. It does not truncate silently, and it does not accept the first N and drop the rest without telling you.

Two exceptions worth knowing:

• Long lists are truncated, and say so. When a register hits its row cap, it renders the rows it has and marks the list as partial. A truncated list never claims the project has nothing else.
• A zero credit balance blocks AI and document processing only. Reading, browsing, and ordinary record editing keep working. See Billing.

Related

• File types for what Struxen accepts and reads
• Statuses for every status vocabulary in one place
• Troubleshooting when something is refused and the reason is not obvious