Bidding & preconstruction

Quantity validation

Accelerate line-item and quantity review for estimator validation.

Converza helps search criteria, notes, and mentioned quantities; the estimator keeps professional validation.

Book a demo See workflow

School addition estimate

Workspace · Quantity takeoff assist

Ready

Selected instruction

Accelerate line-item and quantity review for estimator validation.

Applied

Loaded project files

Spec 32 13 13 Paving.pdfIndexed · measurementIndexed
C-301 Grading Plan.pdfIndexed · quantitiesIndexed
Site Estimate.xlsxIndexed · line itemsIndexed
Addendum 02.pdfIndexed · changesIndexed

1Load files

2Analyze quantities

3Return table

Agent

Quantity takeoff assist

Ready

Use the active instruction with @Spec 32 13 13, @C-301, @Site Estimate.xlsx, and @Addendum 02. Return a table with line item, source, delta, owner, and action.

Analyzing quantities and line items

Converza cross-checks drawing notes, measurement criteria, and Excel to prepare estimator validation items.

Converza response

Takeoff validation table

The estimator selects the instruction, loads spec, drawing, Excel, and addendum with @, and Converza returns a validation table.

Line item	Source	Delta	Owner	Action
Concrete curb shows 1,240 LF on drawing and 1,080 LF in Excel	C-301 + Excel	+160 LF	Estimator	Confirm returns
Base preparation is included in spec but missing from line item	32 13 13	Hidden cost	Chief estimator	Add line item
Addendum 02 changes slab thickness at main entrance	Addendum 02	Higher volume	Estimator	Recalculate item

+Message Smart...

Before and after

The operational shift is from scattered manual review to cited answers and reviewable drafts.

Before

The estimator reviews drawing, specs, and Excel separately and may miss quantity or unit differences.

After

Converza organizes candidate differences with sources so the estimator can validate, correct, or dismiss them.

Real workflow for takeoff assist

The estimator runs an instruction in chat; Converza cross-checks sources and returns a line-item validation table.

Choose instruction and load sources

The user activates Quantity Takeoff Assist and mentions @Spec 32 13 13, @C-301, @Site Estimate.xlsx, and @Addendum 02.

School addition estimate

Workspace · Quantity takeoff assist

Ready

Selected instruction

Accelerate line-item and quantity review for estimator validation.

Applied

Loaded project files

Spec 32 13 13 Paving.pdfIndexed · measurementIndexed
C-301 Grading Plan.pdfIndexed · quantitiesIndexed
Site Estimate.xlsxIndexed · line itemsIndexed
Addendum 02.pdfIndexed · changesIndexed

1Open spec

2Extract criteria

3Flag unit

Agent

Quantity takeoff assist

Ready

Use the active instruction with @Spec 32 13 13, @C-301, @Site Estimate.xlsx, and @Addendum 02. Return a table with line item, source, delta, owner, and action.

Analyzing quantities and line items

Converza cross-checks drawing notes, measurement criteria, and Excel to prepare estimator validation items.

Converza response

Takeoff validation table

Section 32 13 13 requires paving and curb to be measured separately, with preparation included in the sitework item.

Line item	Source	Delta	Owner	Action
Concrete curb shows 1,240 LF on drawing and 1,080 LF in Excel	C-301 + Excel	+160 LF	Estimator	Confirm returns
Base preparation is included in spec but missing from line item	32 13 13	Hidden cost	Chief estimator	Add line item
Addendum 02 changes slab thickness at main entrance	Addendum 02	Higher volume	Estimator	Recalculate item

+Message Smart...

Show analysis loader

Converza reads drawing notes, measurement criteria, and Excel line items before answering.

School addition estimate

Workspace · Quantity takeoff assist

Ready

Selected instruction

Accelerate line-item and quantity review for estimator validation.

Applied

Loaded project files

Spec 32 13 13 Paving.pdfIndexed · measurementIndexed
C-301 Grading Plan.pdfIndexed · quantitiesIndexed
Site Estimate.xlsxIndexed · line itemsIndexed
Addendum 02.pdfIndexed · changesIndexed

1Read note

2Highlight quantity

3Link item

Agent

Quantity takeoff assist

Ready

Use the active instruction with @Spec 32 13 13, @C-301, @Site Estimate.xlsx, and @Addendum 02. Return a table with line item, source, delta, owner, and action.

Analyzing quantities and line items

Converza cross-checks drawing notes, measurement criteria, and Excel to prepare estimator validation items.

Converza response

Takeoff validation table

The drawing note references 1,240 LF of curb; the estimator must confirm whether access returns are included.

Line item	Source	Delta	Owner	Action
Concrete curb shows 1,240 LF on drawing and 1,080 LF in Excel	C-301 + Excel	+160 LF	Estimator	Confirm returns
Base preparation is included in spec but missing from line item	32 13 13	Hidden cost	Chief estimator	Add line item
Addendum 02 changes slab thickness at main entrance	Addendum 02	Higher volume	Estimator	Recalculate item

+Message Smart...

Receive table in chat

The response groups line item, source, delta, owner, and action for estimator validation.

School addition estimate

Workspace · Quantity takeoff assist

Ready

Selected instruction

Accelerate line-item and quantity review for estimator validation.

Applied

Loaded project files

Spec 32 13 13 Paving.pdfIndexed · measurementIndexed
C-301 Grading Plan.pdfIndexed · quantitiesIndexed
Site Estimate.xlsxIndexed · line itemsIndexed
Addendum 02.pdfIndexed · changesIndexed

1Open item

2Compare unit

3Flag delta

Agent

Quantity takeoff assist

Ready

Use the active instruction with @Spec 32 13 13, @C-301, @Site Estimate.xlsx, and @Addendum 02. Return a table with line item, source, delta, owner, and action.

Analyzing quantities and line items

Converza cross-checks drawing notes, measurement criteria, and Excel to prepare estimator validation items.

Converza response

Takeoff validation table

The estimate sheet lists 1,080 LF for the same line item, leaving a candidate difference of 160 LF.

Line item	Source	Delta	Owner	Action
Concrete curb shows 1,240 LF on drawing and 1,080 LF in Excel	C-301 + Excel	+160 LF	Estimator	Confirm returns
Base preparation is included in spec but missing from line item	32 13 13	Hidden cost	Chief estimator	Add line item
Addendum 02 changes slab thickness at main entrance	Addendum 02	Higher volume	Estimator	Recalculate item

+Message Smart...

Validate or update item

The estimator confirms, corrects, or documents assumptions before final pricing.

School addition estimate

Workspace · Quantity takeoff assist

Ready

Selected instruction

Accelerate line-item and quantity review for estimator validation.

Applied

Loaded project files

Spec 32 13 13 Paving.pdfIndexed · measurementIndexed
C-301 Grading Plan.pdfIndexed · quantitiesIndexed
Site Estimate.xlsxIndexed · line itemsIndexed
Addendum 02.pdfIndexed · changesIndexed

1Create checklist

2Assign review

3Update status

Agent

Quantity takeoff assist

Ready

Use the active instruction with @Spec 32 13 13, @C-301, @Site Estimate.xlsx, and @Addendum 02. Return a table with line item, source, delta, owner, and action.

Analyzing quantities and line items

Converza cross-checks drawing notes, measurement criteria, and Excel to prepare estimator validation items.

Converza response

Takeoff validation table

Review C-301 curb, confirm access returns, and document the quantity assumption before updating the final takeoff.

Line item	Source	Delta	Owner	Action
Concrete curb shows 1,240 LF on drawing and 1,080 LF in Excel	C-301 + Excel	+160 LF	Estimator	Confirm returns
Base preparation is included in spec but missing from line item	32 13 13	Hidden cost	Chief estimator	Add line item
Addendum 02 changes slab thickness at main entrance	Addendum 02	Higher volume	Estimator	Recalculate item

+Message Smart...

Output example

A working format the team can review, correct, and move into its internal process.

Estimator validation matrix

Structured output for reviewing quantities, units, and assumptions before final pricing.

Line item	Reviewed source	Difference	Impact	Suggested decision
Concrete curb	C-301 + Site Estimate.xlsx	1,240 LF on drawing vs 1,080 LF in Excel	+160 LF to confirm	Validate access returns and update quantity if included
Base preparation	Spec 32 13 13, part 3.02	Criteria included in spec, no separate line	Hidden cost in paving item	Add line item or document inclusion in unit price
Main entry slab	Addendum 02 + C-301	Thickness changes from 4 in to 6 in	Higher volume and reinforcing steel	Recalculate volume and flag assumption for review

Converza assists the quantity takeoff process; it does not replace professional estimator validation.

Documents used

Converza works from the project document package and keeps sources visible.

Specifications
Drawings
Drawing notes
Excel
Addenda

Personas

Teams typically involved in this workflow.

Estimator
Estimating lead
BIM coordinator

Test Quantity Takeoff Assist with real documents.

Book a demo to walk through this flow with your team context.

Book a demo Explore product

Accelerate line-item and quantity review for estimator validation.

Before and after

Before

After

Real workflow for takeoff assist

Choose instruction and load sources

Show analysis loader

Receive table in chat

Validate or update item

Output example

Estimator validation matrix

Documents used

Personas

Related product modules

Knowledge Base

Assistant

Cited Review

Related use cases

Specs & Addenda Review

Scope & Risk Analysis

Subcontractor Scopes

Test Quantity Takeoff Assist with real documents.