STRUCTURAL ELEMENTS
2. Type B Type B (Structurally Integral) Protection is the incorporation of materials to the external shell of the structure itself. Type B materials include: Reinforced
water-resistant concrete or reinforced water-resistant structural steel. Design, materials and quality of workmanship are paramount when specifying a Type B system due to the pattern of any seepage, poor joints, cracks or other discontinuities such as service penetrations.
3. Type C Type C (Drained) Protection is the incorporation of a cavity drainage system (internal water management system). In principle, a Drained Cavity System collects and manages any ground water which breaches the integrity of a structure by managing, collecting and discharging such free water via a suitable evacuation point such as a packaged pump station. The Cavity Drainage System provides protection to a structure by application of a dimpled High Density Polyethylene (HDPE) membrane, which is applied to the positive (internal) walls and structural slab of a
basement or underground structure to form a barrier between the structure and any groundwater present.
A cavity drain system requires minimal preparation and disturbance to an existing substrate. Type C materials include: Cavity Drain Membranes and Submersible Pump.
4. Combined Systems Some building warranty providers insist on two forms of waterproofing on projects where they are to provide the building warranty.
Difficult and complex projects may also require combination waterproofing. British Standard 8102:2009 recommends the consideration for combined systems where the risk is deemed high. A waterproofing design specialist would have the knowledge and understanding of a range of waterproofing systems to provide a robust design based on compatible materials. As with all waterproofing protections, all rely heavily upon the design and how these materials are incorporated into a project.
Christopher Burbridge is managing director of Delta Membrane Systems
Connecting Cross-Laminated Timber
To support the growing use of cross-laminated timber (CLT) in the UK and Europe, one of the leading connector manufacturers Simpson Strong-Tie has released an updated version of its ‘Connectors for CLT’ catalogue. Featuring a host of new products including heavy duty angle brackets, hold-down connectors and structural screws, this edition represents a complete set of solutions for the assembly of CLT buildings, as well as steel and chemical mortar products designed specifically to connect the entire structure to concrete. Sales Director, Jon Head explains: “We have drawn together a huge variety of products from across our European operations to produce a comprehensive range of performance tested connectors and fasteners to enable CLT constructions from floor to ceiling – the CLT designer need look nowhere else”. To further support the design and construction of CLT structures, Simpson Strong-Tie also has a team of engineers based at its manufacturing plant in Tamworth, offering technical support and assistance. The new brochure can be downloaded from the Simpson Strong-Tie UK website.
01827 255600
www.strongtie.co.uk Something old, new, borrowed, black-blue
When Shauna Cameron Architect required a product that could replicate the aesthetics of Scottish slate for the Atlantic Islands Centre, CUPA PIZARRAS’ Heavy 3 roofing slate was the ideal solution. Architect, Shauna
Cameron from Shauna Cameron Architect, had previously used CUPA PIZARRAS slate and was well aware of its high standards of quality as well as its 100-years warranty. Medium grained and black-blue in colour with occasional quartz grain detectable on the surface, Heavy 3 has an extremely close resemblance to traditional highland slates, which was ideal for a site with such a strong Scottish slate heritage.
01312 253111
www.cupapizarras.com/uk Langley scoops roofing award
Langley Roofing Systems has won best Reinforced Bitumen Membranes Project at this year’s UK Roofing Awards. In recognition of Langley and Opus’ contribution, the accolade celebrates the outstanding design and subsequent
installation of the estate’s extensive and complex new roofing system. The Girdlestone Estate project saw Langley working closely with Opus Waterproofing Solutions and Mears Group on an ambitious plan to strip the failing roof and install Langley’s robust TA-20 RBM solution across six blocks; providing an efficient and cost-effective solution.
01327 704778
www.langley.co.uk
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ADF JULY 2018
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