Basin Sizing
Determine required settling surface area, number of tanks, basin length, width, and depth.
Engineering Calculation Module
Horizontal-Flow Rectangular
Sedimentation Basin Design Calculation
Size and hydraulically evaluate a horizontal-flow rectangular sedimentation basin using a structured Excel workflow for settling-area sizing, basin geometry, hydraulic checks, launder and weir loading, detention time, and design review.
AIDIA
Horizontal-Flow Rectangular Sedimentation Basin
Dashboard Preview
Primary Dimensions
ParameterValueUnit
No. of tanks4unit
Surface area7,406m²
Basin width4.0m
Side water depth3.0m
Hydraulic Review
ParameterResultStatus
L:SWD ratioReviewedPASS
Horizontal velocityReviewedCHECK
Froude numberReviewedPASS
Weir loadingReviewedPASS
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Excel WorkbookStructured preliminary sedimentation-basin design workflow.
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Hydraulic ChecksVelocity, Reynolds number, Froude number, and detention time review.
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Launder & Weir ReviewOutlet launder sizing and weir-loading evaluation.
✓
Review-Ready OutputKey dimensions and design checks summarized in a dashboard.
What This Module Helps You Design
Use a consistent engineering workflow to size and evaluate a horizontal-flow rectangular sedimentation basin. The module connects settling-area sizing, basin configuration, geometry checks, hydraulic review, outlet-launder sizing, and detention-time calculations in one workbook.
Hydraulic Evaluation
Review horizontal velocity, hydraulic radius, Reynolds number, Froude number, and detention time.
Outlet Design Review
Evaluate launder arrangement, effective weir length, and weir loading for the adopted basin geometry.
Calculation Coverage
Preliminary basin sizing and hydraulic review from design flow input through geometry, outlet design, and result summary.
Design Basis
Design flow, selected overflow rate, sludge allowance, freeboard, and adopted trial configuration.
Surface Area Sizing
Calculate the required settling area and distribute it across parallel basins.
Basin Geometry
Determine basin length, width, side water depth, total depth, and geometry ratios.
Horizontal Velocity
Calculate mean horizontal flow velocity based on the adopted basin cross-sectional area.
Reynolds Review
Evaluate the settling-zone hydraulic regime using Reynolds number.
Froude Review
Evaluate hydraulic stability and backmixing tendency using Froude number.
Launder & Weir Loading
Size the launder arrangement and calculate effective weir loading.
Detention Time
Calculate basin volume and hydraulic detention time for the adopted geometry.
Engineering Workflow
A structured path from project flow basis to a reviewable preliminary sedimentation-basin configuration.
1
▤Design Input
Enter project flow, selected design basis, and adopted trial parameters.
2
▭Surface Area
Calculate required settling area from design flow and selected overflow rate.
3
L/WBasin Configuration
Evaluate number of tanks, basin dimensions, and geometric proportions.
4
≈Hydraulic Checks
Review velocity, hydraulic radius, Reynolds number, and Froude number.
5
≋Outlet Review
Calculate launder length, effective weir length, and weir loading.
6
▦Selected Design
Summarize dimensions, HRT, hydraulic checks, and items requiring review.
Workbook Preview
A structured Excel calculation with clear inputs, engineering calculations, hydraulic checks, and a compact review dashboard. Detailed criteria and formulas remain inside the purchased workbook.
AIDIA
Horizontal-Flow Sedimentation Basin — Dashboard Preview
Public Preview
Primary Dimensions
ParameterValueUnit
No. of tanks4unit
Adopted surface area7,406m²
Basin width4.0m
Side water depth3.0m
Total depth3.6m
Key Hydraulic Parameters
ParameterValueUnit
Design flow259,200m³/d
Overflow rate35m³/d·m²
Detention time2.06h
Weir loading69.98m³/d·m
Dashboard Sheet
Summarizes adopted basin dimensions, total area, volume, key hydraulic parameters, and design-check status.
Designed for quick review
The reviewer can identify which parameters satisfy the adopted basis and which items need configuration changes or engineering review.
Linked to the calculation
Dashboard values update from the Calculation Sheet as the design inputs and adopted basin arrangement change.
Calculation Sheet — Public Preview
Description
Symbol
Result
Unit
Required surface area
As,req
Calculated
m²
Area per tank
Atank
Calculated
m²/tank
Basin length
L
Calculated
m
Horizontal velocity
vf
Calculated
m/s
Weir loading
WL
Calculated
m³/d·m
Hydraulic detention time
t
Calculated
h
Calculation Sheet
Shows the sequence from flow basis and surface-area sizing through basin geometry, hydraulic evaluation, outlet design, and detention time.
Traceable workflow
User inputs, adopted trial dimensions, calculations, review status, and result summary stay arranged in one consistent sequence.
Design Check Summary — Public Preview
Check Item
Result
Review Basis
Status
Length / width ratio
Reviewed
Internal criterion
REVIEW
Length / depth ratio
Reviewed
Internal criterion
PASS
Horizontal velocity
Reviewed
Hydraulic criterion
REVIEW
Reynolds number
Reviewed
Hydraulic criterion
REVIEW
Froude number
Reviewed
Hydraulic criterion
PASS
Weir loading
Reviewed
Outlet criterion
PASS
Built-in design checks
The module does not hide unsuccessful checks. Items outside the adopted criteria remain visible for design revision and engineering review.
Protected methodology
The public preview shows the review structure without publishing the complete criteria set, source tables, or calculation formulas.
Designed for Engineering Review
A sedimentation-basin calculation should make adopted geometry, hydraulic behavior, and review items easy to trace.
| Description | Symbol | Calculation | Unit | Notes |
|---|---|---|---|---|
| Design flow | Qd | Project input | m³/d | Design-basis data |
| Required surface area | As,req | Calculated in workbook | m² | Settling-area requirement |
| Basin length | L | Calculated in workbook | m | Based on adopted width |
| Horizontal velocity | vf | Calculated in workbook | m/s | Hydraulic review |
| Weir loading | WL | Calculated in workbook | m³/d·m | Outlet hydraulic review |
| Detention time | t | Calculated in workbook | h | Additional review parameter |
No Black Box
Follow the engineering sequence from project basis to adopted geometry and hydraulic review without exposing the full product methodology publicly.
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Inputs
- Design flow
- Overflow-rate basis
- No. of tanks
- Trial dimensions
→
⚙
Calculation
- Surface area
- Geometry
- Hydraulic checks
- Launder review
→
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Output
- Basin dimensions
- Hydraulic status
- Weir loading
- Detention time
Built-in Design Checks
Not just calculated. Checked. The complete internal criteria set remains inside the purchased workbook.
| Parameter | Result | Review Basis | Status | Action |
|---|---|---|---|---|
| Length-to-width ratio | Reviewed | Adopted internal criterion | REVIEW | Adjust adopted geometry where required |
| Length-to-depth ratio | Reviewed | Adopted internal criterion | PASS | Acceptable in current example |
| Horizontal velocity | Reviewed | Hydraulic criterion | REVIEW | Revise configuration where required |
| Reynolds number | Reviewed | Hydraulic criterion | REVIEW | Review turbulence condition |
| Froude number | Reviewed | Hydraulic criterion | PASS | Acceptable in current example |
| Weir loading | Reviewed | Outlet criterion | PASS | Acceptable in current example |
What's Included
A standardized AIDIA workbook structure for calculation, documentation, and engineering review.
README
Purpose, calculation basis, instructions, responsibility notes, and support information.
Cover
Project identity, document information, and revision fields.
Calculation
Surface-area sizing, geometry, hydraulic checks, outlet review, and detention time.
Dashboard
Conceptual arrangement, dimensions, key parameters, and design-check summary.
Abbreviations
Engineering symbols, terminology, and units used throughout the module.
AIDIA Helps With
- Preliminary settling-area sizing
- Rectangular basin dimensioning
- Hydraulic performance review
- Launder and weir loading checks
- Documentation of design-review items
AIDIA Does Not Replace
- Project-specific engineering judgement
- Regulatory or client-specific requirements
- Detailed structural and mechanical design
- Project-specific hydraulic modelling where required
- Professional engineering approval
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