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Design offices · drinking water, wastewater
Design officesProject engineers

What you write in the specification, a technician will hold with both hands.

A composite caged ladder, hatch or fall protection bars: you specify them, and you need what it takes to back them up. In workwith., our pro portal, you will find the data sheets, the test reports and the ACS certificate for our drinking water ladders. And with the configurator, you prepare your estimates.

idréva · Normandy-based manufacturer of composite access equipment, since 2015 · Rives-en-Seine

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workwith. · a project in the workshop
workwith. “Your project in the workshop” screen: ready for dispatch on 14 October 2026, in 9 days; progress 19 of 20 tasks completed (sample data)
01 — Your situation

What the specification requires, someone will have to prove.

You are writing the specification (CCTP) for a reservoir, a treatment plant or a pumping station. Then comes the clause on access equipment: the caged ladder, the hatch and the fall protection bars underneath. You put in a standard, a load, A4 stainless steel fittings. For drinking water, you require an ACS-certified material.

The contractor who responds will have to meet every line, and often back it up with a test report. A dimension that doesn’t exist, a document nobody can supply: they will offer something else.

At the bottom of the structure, your clause has become a ladder.

A technician lifts the hatch, raises the fall protection bars and climbs down. What they hold with both hands is what you wrote. Or something else, if nobody could meet it.

THE CLIMBING HEIGHT123
Cross-section of an equipped pumping station · schematic diagram
  1. The person going down, often alone
  2. 1The hatch has A4 stainless steel fittings
  3. 2The fall protection bars have passed the 1,200 J impact test
  4. 3The caged ladder complies with NF E85-016
02 — Your structures

For every structure, what you can write, with the document to back it up.

A drinking water reservoir and a pumping station do not call for the same documents. In both, composite doesn’t rust.

Composite caged ladder in a drinking water reservoir
Drinking water

Reservoirs, water towers, treatment plants

What the specification requires
The ladder is in contact with water intended for consumption: its material must be ACS-certified.
The document that proves it
The material of our drinking water ladders is ACS-certified, and the certificate ships with every ladder. Our ladders comply with EN ISO 14122-4 and NF E85-016, and their test report is in your Documents.
ACS drinking water laddersComposite ladders
Composite ladder in a pumping station
Wastewater

Pumping stations, wastewater treatment plants

What the specification requires
As soon as the hatch opens, there is a drop of several metres. The fall protection must be backed up by an impact test.
The document that proves it
Our optional fall protection bars fit inside the hatch frame. At 1,200 J, INRS ED 6076 method, the bag does not pass through, and the test report is in your Documents. The hatch fittings and the ladder fixings are A4 stainless steel.
Access hatchesComposite ladders
Composite fall protection bars tested at 1,200 J
Fall protection bars

Fall protection bars are not a given.

The bars are optional: if you want them under the hatch, write them into your clause. They fit inside the frame of the hatch of the same size: for our T1-Std hatches, in 600 × 600, 800 × 800, 1,000 × 1,000 and 1,500 × 800 mm. For a chamber or shaft in civil works, we make a module that is cut to fit on site. A dimension outside these sizes? Your account manager looks into a made-to-measure hatch.

Fall protection grids and bars
20 yearsService life
Once a yearA visual inspection

All that is left is to estimate the structure and gather the documents.

What’s in your portal
Request my design office account

Free, no obligation. We approve your profile after a conversation, and an account manager answers your questions.

03 — Your project

You do the estimating yourself, and an account manager answers your questions.

In workwith., our pro portal, you use the configurator to prepare your estimates, and the documents for our equipment are in your Documents. When a question goes beyond the catalogue, your account manager replies.

workwith. home screen: “Hello Marie”, 2 files in the workshop, a current estimate for the Bellevue reservoir (sample data)
  1. workwith. screen: estimate so far, price hidden; your account manager prepares the final quote within 48 working hours (sample data)
    01

    Estimate the equipment

    You configure the ladder to the height of the structure, up to 8,000 mm: vertical or inclined installation, safety cage, top exit, A4 stainless steel fixings. For a hatch, you choose the size and, on the T1-Std 600, 800 and 1000, the position of the hold-open stay. Fall protection bars are added to the same estimate. You have your estimate before you write the dimension into the specification.

    Estimate so far
  2. workwith. project screen: “Check the drawings, then approve them: the workshop is waiting for your go-ahead to start production”, with the Approve the drawings and Leave a comment buttons (sample data)
    02

    Study non-standard work

    Standard or configured equipment has no drawings to approve. The 2D/3D drawings of our ladders, in DWG format, are in the Library. For a structure that needs a design study, our design office prepares the installation drawings: above 8,000 mm, for example, the ladder becomes a custom design, with a rest platform at 6,000 mm. The drawings arrive on the project’s page with their revision, and production waits for them to be approved.

    Drawings with their revision
  3. workwith. “Your project in the workshop” screen: the workshop workstations, Quality control completed, Packing in progress (sample data)
    03

    Make, then inspect

    For a ladder, even a routine configuration is approved by our design office. The equipment then goes through each workstation in our Rives-en-Seine workshop, up to the inspection. The person who ordered it tracks the progress in “Track production”, with photos of the inspection and packing.

    Rives-en-Seine
  4. workwith. menu: Overview, My estimates, My orders, My projects, My invoices, My documents; Catalogue, Library, Messages
    04

    Gather the documents

    Data sheets, installation instructions, test reports, ACS certificates: you will find them in your Documents. Missing a document for your clause? You ask your account manager for it, in Messages.

    In your Documents

workwith. screens, with sample data; prices hidden.

Your account manager replies within 48 working hours, in Messages. A non-standard dimension, a standard to check? You ask them.

After installation, our ladders need one visual inspection a year. check™ makes it visible on the ladder.See the annual inspection

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04 — Who we are

Our proof is in the documents.

We are idréva, a Normandy-based manufacturer of composite access equipment since 2015. Our team has been working with composite for more than twenty years, in our factory in Rives-en-Seine since January 2025. And our design office calculates every profile in our ladders.

Our story
2015The start of the idréva story
24People in the team
2025Rives-en-Seine factory, in operation since 1 January
400+Active customers every year
150 kgMaximum load per ladder
Fall protection1,200 J

A 50 kg bag, dropped three times from 2.40 m.

50 kg× 32.40 mTHE BAG DOES NOT PASS THROUGH
Diagram of the test: a 50 kg bag, dropped three times from a height of 2.40 m onto a fall protection grid resting on its frame. The bag does not pass through.

This is the impact test from the INRS ED 6076 method, the INRS document on pumping stations. On our fall protection grids and bars, the bag does not pass through. A third-party inspection body has validated it.

The test report is in the Documents section of your portal.

Drinking waterACS

The material in contact with the water is certified.

On our drinking water ladders, the material has passed the ACS migration tests, in an approved independent laboratory. The certificate ships with every ladder, and you will find it in your Documents.

Workshop exitSignal™ “Approved” label, with the number, date and signature

Only green leaves the workshop.

Every piece of equipment is inspected in our Rives-en-Seine workshop. Equipment that ships carries the green “Approved” Signal™; on the label, its number, the inspection date and the inspector’s signature. The rest stays with us. This inspection is photographed.

The Signal™ programme
Standards
  • Our ladders comply with EN ISO 14122-4 and NF E85-016
  • Their top exits follow NF E85-015
  • Our guard-rail is designed to NF E85-015 and EN ISO 14122
05 — Why we do all this

You are specifying for someone you will probably never meet.

Neither will we. Yet they’re the ones we think of when our design office calculates a ladder.

06 — Request access

Three steps, one person who answers.

01You fill in the form

You give your design office’s company name, its SIRET number and your contact details, in a single form.

Now
02We check your profile

We approve your profile after a conversation, by phone or by email, then your login details arrive by email.

After a conversation with you
03Your account manager replies

You prepare your estimates with the configurator, and you ask them your questions in Messages.

Reply within 48 working hours
Your design office account

No prices are shown to visitors: once signed in, you prepare your estimates with the configurator.

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Profile approved after a conversationNo obligationReply within 48 working hoursData hosted in FranceMade in Normandy

Operator, local authority, distributor or installer?Access requests are made in the same place

07 — Common questions

Specifying a composite ladder or hatch, in six questions.

Six short answers. For anything else, your account manager replies in the pro portal.

It lets you specify with the evidence in hand. In your portal, you will find the data sheets, the test reports and the ACS certificate for our drinking water ladders. You use the configurator to prepare your estimates. For a structure that needs a design study, our design office prepares the installation drawings. And your account manager replies within 48 working hours. The account is free, with no obligation.