Request design assistance

The following information is required to provide a recommendation for a simple run of trench drainage. On receipt of this form, ACO will provide a recommendation with hydraulic calculations where necessary.

If you need assistance filling out this form, please contact ACO.

Project Name*

Project City*

State*

First Name*

Last Name*

Phone*

Email*

Company*

Country*

CATCHMENT HYDRAULICS

Catchment area*

Length (m)

Width (m)

Rainfall intensity*

mm/hr

Design storm - AEP

percentage (%)

Catchment surface type

Please select

Runoff coefficient

Impermeability factor (0 - 1)

Required discharge

If known (L/s)

Longitudinal groundslope - fall

Catchment slope - crossfall (left)

Catchment slope - crossfall (right)

Is trench central to catchment width?

If no, give details:

Left (m)

Right (m)

Additional discharge into trench

such as downpipes, machinery etc. (L/s)

Position along trench

From upstream end (m)

Temporary ponding allowed?

TRENCH DRAIN INFORMATION

Outlet type

(Please select)

Outlet position

Outlet pipe size diameter:

(if known) mm

Is the trench drain run same length as catchment area length?

If no, give details:

A (m)

B (m)

Is there a depth restriction?

If yes, give details:

(mm)

Expected grate load class:

Preferred grate style (user/legislative requirement)

Please select

Does the discharge need to be stored for detention, retention or infiltration?

OTHER INFORMATION

Upload File: (max 6MB)

Feedback required from ACO:Trench hydraulic flow informationGrating intake performaceLayout schedule and parts listSurface water storage solutionsPlease contact me to discuss

Notes:

ADDITIONAL RUNS

Run 2

Catchment area

Length (m)

Width (m)

Rainfall intensity

mm/hr

Design storm - AEP

percentage (%)

Catchment surface type

Please select

Runoff coefficient

Impermeability factor (0 - 1)

Required discharge

If known (L/s)

Longitudinal groundslope - fall

Catchment slope - crossfall (left)

Catchment slope - crossfall (right)

Is trench central to catchment width?

If no:

Left (m)

Right (m)

Additional discharge into trench

such as downpipes, machinery etc. (L/s)

Position along trench

From upstream end (m)

Temporary ponding allowed?

Outlet type

(Please select)

Outlet position

Outlet pipe diameter:

(if known) mm

Is the trench drain run same length as catchment area length?

If no:

A (m)

B (m)

Is there a depth restriction?

If yes:

(mm)

Expected grate load class:

Preferred grate style (user/legislative requirement)

Please select

Does the discharge need to be stored for detention, retention or infiltration?

Run 3

Catchment area

Length (m)

Width (m)

Rainfall intensity

mm/hr

Design storm - AEP

percentage (%)

Catchment surface type

Please select

Runoff coefficient

Impermeability factor (0 - 1)

Required discharge

If known (L/s)

Longitudinal groundslope - fall

Catchment slope - crossfall (left)

Catchment slope - crossfall (right)

Is trench central to catchment width?

If no:

Left (m)

Right (m)

Additional discharge into trench

such as downpipes, machinery etc. (L/s)

Position along trench

From upstream end (m)

Temporary ponding allowed?

Outlet type

(Please select)

Outlet position

Outlet pipe diameter:

(if known) mm

Is the trench drain run same length as catchment area length?

If no:

A (m)

B (m)

Is there a depth restriction?

If yes:

(mm)

Expected grate load class:

Preferred grate style (user/legislative requirement)

Please select

Does the discharge need to be stored for detention, retention or infiltration?

Run 4

Catchment area

Length (m)

Width (m)

Rainfall intensity

mm/hr

Design storm - AEP

percentage (%)

Catchment surface type

Please select

Runoff coefficient

Impermeability factor (0 - 1)

Required discharge

If known (L/s)

Longitudinal groundslope - fall

Catchment slope - crossfall (left)

Catchment slope - crossfall (right)

Is trench central to catchment width?

If no:

Left (m)

Right (m)

Additional discharge into trench

such as downpipes, machinery etc. (L/s)

Position along trench

From upstream end (m)

Temporary ponding allowed?

Outlet type

(Please select)

Outlet position

Outlet pipe diameter:

(if known) mm

Is the trench drain run same length as catchment area length?

If no:

A (m)

B (m)

Is there a depth restriction?

If yes:

(mm)

Expected grate load class:

Preferred grate style (user/legislative requirement)

Please select

Does the discharge need to be stored for detention, retention or infiltration?

Run 5

Catchment area

Length (m)

Width (m)

Rainfall intensity

mm/hr

Design storm - AEP

percentage (%)

Catchment surface type

Please select

Runoff coefficient

Impermeability factor (0 - 1)

Required discharge

If known (L/s)

Longitudinal groundslope - fall

Catchment slope - crossfall (left)

Catchment slope - crossfall (right)

Is trench central to catchment width?

If no:

Left (m)

Right (m)

Additional discharge into trench

such as downpipes, machinery etc. (L/s)

Position along trench

From upstream end (m)

Temporary ponding allowed?

Outlet type

(Please select)

Outlet position

Outlet pipe diameter:

(if known) mm

Is the trench drain run same length as catchment area length?

If no:

A (m)

B (m)

Is there a depth restriction?

If yes:

(mm)

Expected grate load class:

Preferred grate style (user/legislative requirement)

Please select

Does the discharge need to be stored for detention, retention or infiltration?

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Request design assistance

CATCHMENT HYDRAULICS

TRENCH DRAIN INFORMATION

OTHER INFORMATION

ADDITIONAL RUNS

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