Building water supply and drainage design

The design should identify the systems covered and each one's function: supplying water to the proposed outlets, collecting and conveying wastewater, and draining rainwater from the areas included. Explain whether the enquiry concerns the whole building, particular floors or a defined intervention.

The scope should define route studies, sizing and technical documentation for the agreed stage. Existing systems to be retained, sections to be altered and connections requiring clarification should be recognisable as the design develops. The proposal should also define the relationship with external networks and identify the architectural and other engineering information needed to coordinate the solution.

To prepare the water supply design, identify the spaces and equipment to be served and the intended use. Send available information about entry points, the existing system and proposed alterations. If the enquiry covers cold and hot water, those components and their limits should be explicit.

The agreed design work should clarify the routes, connection points, materials and technical elements to be represented, with the corresponding calculations and assumptions. The relationship with water heating equipment and other systems should be coordinated where relevant, without assuming that the design includes equipment supply. Missing information about the installation or supply conditions should be identified before the solution is finalised.

A wastewater drainage design enquiry should identify the fixtures and spaces involved, their proposed positions and the known elements of the existing system. For a renovation, send plans showing current and intended locations, marking the sections or connections to be retained. Also explain access conditions for the relevant areas.

The scope should clarify the routes and connection points to be studied, sizing information and documents to be delivered. The solution should be coordinated with architecture, structure and service spaces, particularly where it meets existing or shared elements. Moving a kitchen or bathroom should be treated as an alteration to be studied, without assuming that the intended route can be confirmed from the room layout alone.

Identify the roofs, balconies, terraces or other building areas whose drainage forms part of the enquiry. Send drawings and information about existing collection points, routes and connections where available. The design should define the areas considered and distinguish the building system from any external works associated with the intervention.

The proposal should clarify the collection and conveyance elements to be studied, the data needed for sizing and the documentation of the solution. Coordination with roofs, paving, junction details and other systems should be identified. Conditions or connections awaiting confirmation need to be recorded; preparing the design should not be presented as a guarantee against water ingress or drainage problems in every situation.

Provide previous designs, alteration records, photographs and information received from authorities or participants involved with the building. Identify document sources and versions, together with points where they may not reflect the current condition. Concealed, inaccessible or undocumented parts should be marked as information requiring clarification.

The proposal should identify the need for surveys, site observations or other data and define their inclusion. Connection points within the design, information required about external networks and interfaces with architecture, structure and other services should be clear. For work in shared areas or connecting to retained systems, identify the contacts and known constraints so that coordination can be organised.

The proposal should identify the written documents, drawings, diagrams, calculations and specifications to be delivered for the intended stage. The areas and systems covered, source documents, assumptions and relevant limitations should be recognisable. Clarify formats, versions, review points and support associated with design development.

Installation of building services and external network works need defined scopes where they are also requested. The proposal should distinguish design, supplies, installation, checks and the corresponding handover documents. Changes to fixtures, equipment, routes or connection points should be communicated so that the need to revise documents can be assessed. Design documentation should not be treated as a record of an installation already completed.

Explain which systems and alterations you want to study. To help define the work, send or identify:

• Location, building type and intended use.
• Areas, floors and systems to be included in the design.
• Plans of the existing building and proposed layout.
• Fixtures, equipment and outlets to be served.
• Available documents about existing systems and connections.
• External or shared areas requiring coordination.
• Access, concealed areas and information awaiting confirmation.
• Relevant stages, documents, participants and dates.

If the source information is incomplete, describe the objective and the data available. Preparing the proposal should identify what needs clarification and the documentation required to develop the agreed scope.

• Plumbing and electrical installations

  Define the building plumbing installation work and connections required.

• Construction

  Define associated building work and external networks within an agreed scope.

• Engineering design and coordination

  Coordinate building water and drainage systems with the other designs and address the documented interfaces.

We welcome enquiries in Lisboa, Oeiras, Cascais, Sintra, Amadora, Odivelas and Loures. Availability and the feasibility of the work are assessed for each enquiry.