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<br /> Technical<br /> Extra<br /> February 2015 | Issue 17<br /> In this issue:<br /> NHBC STANDARDS<br /> Minimum foundation depths in clay soils page 3<br /> Ironmongery for windows and doors page 4<br /> REGULATION AND COMPLIANCE<br /> Update on air-tightness testing page 6<br /> Ensuring adequate ventilation to naturally-ventilated dwellings page 8<br /> NHBC updated guidance in respect of guarding to openable<br /> windows with low cill heights page 10<br /> Design and use of autoclaved aerated concrete<br /> masonry units page 14<br /> CE marking for steelwork fabrications page 16<br /> GUIDANCE AND GOOD PRACTICE<br /> Pre-start meetings and risk guides <a title="Technical Extra Issue 17 page 1" href="http://viewer.zmags.com/publication/fdafbb3c?page=1"> Technical Extra February 2015 | Issue 17 In this</a> <a title="Technical Extra Issue 17 page 2" href="http://viewer.zmags.com/publication/fdafbb3c?page=2"> Foreword Welcome to Technical Extra 17 Pre-sta</a> <a title="Technical Extra Issue 17 page 3" href="http://viewer.zmags.com/publication/fdafbb3c?page=3"> NHBC STANDARDS Minimum foundation depths in clay</a> <a title="Technical Extra Issue 17 page 4" href="http://viewer.zmags.com/publication/fdafbb3c?page=4"> NHBC STANDARDS Ironmongery for windows and doors</a> <a title="Technical Extra Issue 17 page 5" href="http://viewer.zmags.com/publication/fdafbb3c?page=5"> Ironmongery for windows and doors REQUIREMENTS (</a> <a title="Technical Extra Issue 17 page 6" href="http://viewer.zmags.com/publication/fdafbb3c?page=6"> REGULATION AND COMPLIANCE Update on air tightnes</a> <a title="Technical Extra Issue 17 page 7" href="http://viewer.zmags.com/publication/fdafbb3c?page=7"> Update on air tightness testing REQUIREMENTS (CO</a> <a title="Technical Extra Issue 17 page 8" href="http://viewer.zmags.com/publication/fdafbb3c?page=8"> REGULATION AND COMPLIANCE Ensuring adequate vent</a> <a title="Technical Extra Issue 17 page 9" href="http://viewer.zmags.com/publication/fdafbb3c?page=9"> Ensuring adequate ventilation to naturally-ventil</a> <a title="Technical Extra Issue 17 page 10" href="http://viewer.zmags.com/publication/fdafbb3c?page=10"> REGULATION AND COMPLIANCE NHBC updated guidance </a> <a title="Technical Extra Issue 17 page 11" href="http://viewer.zmags.com/publication/fdafbb3c?page=11"> NHBC updated guidance in respect of guarding to o</a> <a title="Technical Extra Issue 17 page 12" href="http://viewer.zmags.com/publication/fdafbb3c?page=12"> NHBC updated guidance in respect of guarding to o</a> <a title="Technical Extra Issue 17 page 13" href="http://viewer.zmags.com/publication/fdafbb3c?page=13"> NHBC updated guidance in respect of guarding to o</a> <a title="Technical Extra Issue 17 page 14" href="http://viewer.zmags.com/publication/fdafbb3c?page=14"> REGULATION AND COMPLIANCE Design and use of auto</a> <a title="Technical Extra Issue 17 page 15" href="http://viewer.zmags.com/publication/fdafbb3c?page=15"> Design and use of autoclaved aerated concrete mas</a> <a title="Technical Extra Issue 17 page 16" href="http://viewer.zmags.com/publication/fdafbb3c?page=16"> REGULATION AND COMPLIANCE CE marking for steelwo</a> <a title="Technical Extra Issue 17 page 17" href="http://viewer.zmags.com/publication/fdafbb3c?page=17"> CE Marking for steelwork fabrications REQUIREMEN</a> <a title="Technical Extra Issue 17 page 18" href="http://viewer.zmags.com/publication/fdafbb3c?page=18"> GUIDANCE AND GOOD PRACTICE Pre-start meetings an</a> <a title="Technical Extra Issue 17 page 19" href="http://viewer.zmags.com/publication/fdafbb3c?page=19"> GUIDANCE AND GOOD PRACTICE Provision of fire prot</a> <a title="Technical Extra Issue 17 page 20" href="http://viewer.zmags.com/publication/fdafbb3c?page=20"> GUIDANCE AND GOOD PRACTICE robustdetails® animat</a> <a title="Technical Extra Issue 17 page 21" href="http://viewer.zmags.com/publication/fdafbb3c?page=21"> robustdetails® animated training videos GUIDANC</a> <a title="Technical Extra Issue 17 page 22" href="http://viewer.zmags.com/publication/fdafbb3c?page=22"> GUIDANCE AND GOOD PRACTICE NHBC Foundation Who s</a> <a title="Technical Extra Issue 17 page 23" href="http://viewer.zmags.com/publication/fdafbb3c?page=23"> NHBC Foundation GUIDANCE (CONTINUED) Part L 2013</a> <a title="Technical Extra Issue 17 page 24" href="http://viewer.zmags.com/publication/fdafbb3c?page=24"> GUIDANCE AND GOOD PRACTICE Provision of weep hol</a> <a title="Technical Extra Issue 17 page 25" href="http://viewer.zmags.com/publication/fdafbb3c?page=25"> TECHNICAL NEWS THE DATE FOR THE END OF THE PART </a> <a title="Technical Extra Issue 17 page 26" href="http://viewer.zmags.com/publication/fdafbb3c?page=26"> INFORMATION AND SUPPORT UPCOMING TECHNICAL EVENT</a> <a title="Technical Extra Issue 17 page 27" href="http://viewer.zmags.com/publication/fdafbb3c?page=27"> Part L of the Building Regulations sets the</a> <a title="Technical Extra Issue 17 page 28" href="http://viewer.zmags.com/publication/fdafbb3c?page=28"> Useful contacts for technical information and adv</a>