Modern methods for modern developers:

 

In recent times two major themes have emerged for developers to satisfy the urgent demand for homes and how best to make those homes “smarter” and therefore more environmentally friendly and saleable to discerning homebuyers.

The first point is to speed up the process of construction given the skill sets which are available (not to mention the British weather), the second to meet the environmental and technical demands of a more IT enlightened public.

Modular Homes:

Modular construction systems are probably the only way by which the UK can achieve the necessary build program to meet demand, quality, consistency and speed of construction, with all utilities being ready to literally “plug in”.

Given these requirements, traditional underground water control systems simply just do not fit the bill, either for accessibility or as a home for a meter.

The only realistic method of achieving this simple concept is to connect to externally mounted, pre-installed water service controls.

Our Groundbreaker water management system is the only such system available – designed to be installed at any time during the construction period, is fully (Water Regulations) approved and offers an accessible, safe and secure location for the water meter and controls to a specific property.

 

 

Because of its compact design, Groundbreaker can facilitate the early and secure connection of water services to a plot or unit, for both accessibility and water quality at a time to suit the developer’s program of events on site.

Groundbreaker was chosen by “Urban Splash” for its prestigious development at Irwell Riverside, Salford, as the most efficient method of achieving all the objectives, the scheme being “approved” by United Utilities who also saw the advantages of early connections to the water supplies.

By use of Groundbreaker, Urban Splash has been able to avoid the “clutter” of street furniture, allowing clean lines for the design of the project as will be seen from the images.

Smarter water management:

Smart meters have been around for a while now, but every smart meter so far has had to be installed above ground as traditional underground water control boxes are apt to get waterlogged and are exceedingly poor in being able to transmit a signal to even a local pick up.

Besides facilitating water connections to meet rapid build programs, Groundbreaker also offers by far the best location for a water meter. Transmissions from a smart meter above ground – the location of the Groundbreaker unit – have proven to be at least 1 000x better than in the traditional locations.

We believe it is essential for the homeowner to manage his or her utilities and impact on the environment probably via a home hub with link to the ubiquitous “App” on a mobile phone or home computer.

Recently, Groundbreaker was chosen for the first pilot of a 5G transmitter associated with a smart water meter, no other product could have provided such a platform so successfully, leaving the way open for further “smart systems” to follow.

Groundbreaker is compliant with all relevant legislation as well as meeting the best practice recommendations of Water UK and the Home Builders Federation and can be used on more traditional building systems and refurbishment schemes.

For further information on Groundbreaker and associated products, please email sales@groundbreaker.co.uk , call on

 

www.groundbreaker.co.uk

by Simon Lloyd – Kiwa Building Products

 

The concrete ground floor of a building must be constructed to:

  • resist the passage of ground moisture to the upper surface of the floor covering;
  • not be damaged by water vapour and water from the ground;
  • not let interstitial condensation adversely affect the structural and thermal performance of the concrete ground floor nor promote surface condensation.

A concrete ground floor might also need to protect the occupants of a building from ground gases.

A concrete ground floor will meet these requirements when a damp proof membrane (DPM), water proof or gas proof membrane is incorporated in the floor build-up.

Such a membrane could be a flexible, chemically resistant, co-polymer thermoplastic sheet, manufactured in accordance with BS EN 13967 from low-density polyethylene. Some membranes have integral aluminium foil for resistance to methane, carbon dioxide and radon gas. On site, the membrane sheet laps can be hot weld jointed or the laps are bonded using double-sided self-adhesive jointing tape and, in some cases, sealed with single-sided self-adhesive lap tape.

A membrane at least 300 μm thick with sealed joints can be laid under a ground-supported concrete slab to prevent the concrete from gaining moisture through capillary action. If the ground could contain materials that are dangerous to health or cause failures in buildings e.g. water soluble sulphates, contaminants, chlorides, volatile organic compounds (VOCs) or ground gases, a suitable membrane should be specified.

A membrane laid above a concrete slab should be protected by an insulation layer and/or screed layer, prior to application of a floor finish.

A DPM can act to prevent the ingress of ground water vapour, and ground liquid water when not subject to hydrostatic pressure.

A water proof membrane can be used for protection against liquid ground water under hydrostatic pressure to BS 8102 Type A, if the joints can be hot welded. It can provide waterproofing protection Grades 1 and 2; and Grade 3 when part of a combined waterproofing solution.

 

 

Cellar and basement tanking membranes can be used with cavity drainage wall membranes and ancillaries as part of a type C basement waterproofing system. A suitably designed sealed system can drain away groundwater in a controlled manner.

Ground gas membranes protect a building and its occupants from the ingress of ground VOC vapours and liquids, and methane/carbon dioxide ground gases, in accordance with BS 8485 and CIRIA C748.

Design of ground VOC vapour and ground gas protective measures for buildings on contaminated land or in areas of risk must be in accordance with the recommendations in CIRIA C665, C716D, C735, C748, R149, BS 8485 and BRE Report 414.

When medium to high levels of ground VOCs and ground gases are present or when the generation of gases still occurs, a suspended concrete ground floor or an open void beneath a ground supported concrete ground floor, should be used to ventilate ground gases to atmosphere.

For installation, a surface blinding layer of soft sand may be needed to fill voids in the hardcore base, to prevent the risk of puncturing during pouring of a concrete slab, or sand blinding of a concrete slab to prevent puncturing during installation of a screed layer.

The installation of a membrane must achieve complete continuity and integrity across the footprint of a building. It must be sealed to the perimeter damp proof course in walls, at piers and around service pipe penetrations.

In ground VOC and ground gas barrier applications, airtight seals must be formed around all service pipe penetrations using taped membrane or top hat units suitable for the application.

 

www.kiwa.com