Plans

Upload a construction PDF and LogLoon splits it into individual sheets, each with its number and name. Your crew browses, zooms, marks up, and pins work to the drawings — on web or in the field.

How It Works

When you upload a PDF plan set, LogLoon:

1. Extracts each page as a separate sheet
2. Detects the sheet number (e.g., A101, S-2.1, MEP001)
3. Identifies the sheet name (e.g., “First Floor Plan”, “Structural Framing”)
4. Detects callouts — section flags, detail bubbles, and the sheet index — and turns them into links
5. Generates thumbnails for quick browsing

The whole process typically takes 1-2 minutes for a 50-page plan set.

Uploading Plans

1. Go to your project’s Plans tab
2. Click Upload Plans
3. Select a PDF file (up to 100MB, 150 pages max)
4. Wait for processing to complete
5. Review and confirm the extracted sheet information

Confirming Sheets

After processing, you’ll see a confirmation dialog showing:

• Thumbnail preview of each sheet
• Detected sheet number and name
• Warning icons (⚠) for low-confidence detections that need review

Sheets with low confidence are highlighted so you know which ones to check. Edit any incorrect sheet numbers or names before confirming.

Browsing Sheets

On web, sheets show as a thumbnail grid by default. Use the list toggle if you’d rather scan sheet numbers and names in a column. Search by sheet number or name to jump straight to a sheet.

Inside the viewer, open the grid navigator to jump between sheets without backing out.

On iPhone and iPad, swipe left or right to flip between sheets like turning pages in a set.

Sheets stay in drawing-set order, so the sequence matches the printed set.

Zooming

Sheets stay razor sharp at any zoom level — LogLoon renders the drawing itself, not a photo of it. Zoom all the way in on a weld symbol or a dimension string and it stays crisp.

• Web: double-click to zoom
• iPhone and iPad: pinch to zoom

Sheet Links

LogLoon automatically detects callouts on your drawings — section flags, detail bubbles, and the sheet index — and turns them into tappable links. Tap a detail bubble and you jump straight to the referenced sheet.

There’s no setup. Link detection happens during upload processing.

Markups

Mark up sheets on web and in the iOS app. Tools:

Tool	Use it for
Text	Notes on the drawing
Callout	Text with a leader arrow pointing at the spot
Line	Straight lines
Arrow	Pointing things out
Rectangle	Boxing an area
Ellipse	Circling an area
Revision cloud	Flagging changed work
Highlighter	Shading over the drawing without hiding it
Pen	Freehand sketching

• Pick from multiple colors, including yellow, and three stroke widths
• Undo and redo as you go
• Select any markup to move, resize, or edit it later

On iPhone in portrait, the toolbar runs down the right edge of the screen so it stays out of the drawing.

Pins

Drop pins directly on a sheet so work is anchored to the exact spot on the drawing. LogLoon has two kinds:

• Task pins — tie a task to a location. You can create a new task straight from the pin.
• File pins — attach a file (a submittal, a photo, a detail PDF) to a location.

Pins stay crisp at any zoom level.

Creating a Pin

1. Open a sheet in the viewer
2. Tap the Pin button to enter pin mode
3. Tap the location on the sheet
4. Select an existing task or file, or create a new task on the spot

Pin Colors

Task pins are color-coded by status:

Status	Color
Backlog	Gray
Ready	Blue
In Progress	Orange
Blocked	Red
Done	Green

Managing Pins

• Tap a pin to view the task or file
• Long-press a pin to see options (View Task, Delete Pin)
• Long-press and drag to reposition a pin (Managers only)

The sheet list shows how many pins are on each sheet, so you can spot sheets with active work.

Revisions

When plans get updated, upload the new set to the same project:

1. Upload a new PDF with the updated sheets
2. LogLoon matches sheets with the same sheet numbers as previous uploads
3. The new sheets become the current revision (Rev 1, Rev 2, etc.)
4. Previous versions are preserved for reference

The sheet list shows only the current revision of each sheet, and sheet order follows the drawing set across revisions.

Viewing Older Revisions

The viewer opens the current revision by default. If a sheet has multiple revisions, a switcher appears — pick any revision to view it (e.g., “Original”, “Rev 1”, “Rev 2”).

Offline Access (iOS only)

Jobsites lose signal. The iOS app keeps your plans working anyway:

1. Open a project’s Plans screen
2. Tap the download button

Every sheet in the project saves to the phone. You can view, zoom, mark up, and drop pins with no signal — everything syncs when you’re back in coverage.

Sheets you’ve viewed are cached automatically, even without a full download.

When someone uploads new revisions, an update badge appears on the download button. One tap refreshes your downloaded set.

To manage or remove downloads, go to the Company tab → Offline Storage.

Managing Sheets (Web only)

• Remove a sheet: select it and choose remove
• Remove several sheets: bulk-select — shift-click to grab a range — then remove them together
• Delete a plan set: deletes the whole set at once

Sheet Number Detection

LogLoon recognizes a wide variety of sheet numbering conventions:

Format	Examples
Single letter prefix	A101, S1, E001
Multi-letter prefix	FP101, AD2.1, MEP001
Multi-level numbers	A2.1.1, A3.1.2B, PD2.1.A
Various delimiters	A-101, A.101, A101

Supported Discipline Prefixes

LogLoon recognizes 30+ standard discipline prefixes:

• G - General
• C - Civil
• L - Landscape
• A - Architectural
• S - Structural
• M - Mechanical
• P - Plumbing
• E - Electrical
• FP - Fire Protection
• FA - Fire Alarm
• And many more…

Sheet Name Detection

Sheet names are identified using multiple signals:

1. Position - Names are typically in the title block (bottom-right area)
2. Font size - Sheet names are usually larger than surrounding text
3. Keywords - Common terms like “Plan”, “Elevation”, “Section”, “Detail”
4. Proximity - Names appear near the sheet number

Multi-line titles (like “FIRST FLOOR / LIFE SAFETY & EVACUATION PLAN”) are merged into a single name, and vertically-oriented title block text is read correctly.

Tips for Best Results

• Use vector PDFs when possible (CAD exports) rather than scanned images
• Standard title block placement (bottom-right) works best
• Always review the confirmation dialog and fix any wrong detections before confirming
• Excluded sheets won’t appear in the app

Troubleshooting

”Sheet number shows as ‘Sheet 1’, ‘Sheet 2’, etc.”

LogLoon couldn’t detect the actual sheet number. Common causes:

• Sheet number is embedded in an image, not text
• Non-standard sheet numbering format
• Title block is in an unusual location

Solution: Edit the sheet numbers manually in the confirmation dialog.

”Sheet name is wrong or missing”

Name detection is harder than number detection. If names are incorrect:

• The title may be formatted unusually
• Text encoding in the PDF may be non-standard
• The name might be in a non-typical location

Solution: Edit the names manually before confirming.

”Processing failed”

Check that:

• File is under 100MB
• File has fewer than 150 pages
• File is a valid PDF (not corrupted)

If issues persist, contact team@logloon.com.