A structural underlay (and draining membrane) is often required under the zinc to ensure air circulation to its underside.
Roofing application: The roof is either ventilated with a ventilating space of between 50 and 100mm (depending on rafter length) under the substrate, or installed in an unventilated (warm) roof design which includes suitable methods for condensation control. A simple breather membrane is normally installed between the zinc and the substrate to act as a separating layer. For buildings that require a non-combustible substrate for the zinc, trapezoidal metal sheet panels are used as a substitute for the wooden sheathing / boarding.įaçade application: The cladding is normally rear-vented behind the supporting sheathing / boarding with a ventilating space of at least 20mm (some countries require more). Sheathing / boarding to be laid flush, true and plumb, and its fasteners driven just below the surface. Reinforced Angle Bracket (105-R) - ABR abr105-13-2d.dwg. Trays are fixed back to sheathing / boarding using stainless steel clips secured at pre-determined centres (according to exposure) by stainless steel (A2 grade) fasteners. Heavy Duty Angle Bracket for CLT - AB255SSH ab255ssh-2d.dwg. Cladding weight (zinc only) is between 6 and 7 kgs/m2. The trays are made of 0,7 or 0,8mm thick elZinc ® titanium zinc rolled according to EN988 and ASTM B69-13 Or, create a curved fascia beam and use it to join/cut/trim the rafter tails. The specialized housing allows the light to shine straight down. Pre-cast concrete step, 1 riser, variable width, 4 out from wall. Product Version: Revit Architecture 2009. Parametric Depth, materials and Chord Depth/Width. Cut the end of one rafter tail with the opening by face tool then array it. What does sloped ceiling compatible mean Recessed lights installed on a sloped ceiling use special housing cans, sometimes referred to as shovel-cut cans, that are angled to fit up to a 45-degree slope. Gangnail PosiStrut Floor Truss, Line Based - Length is set by drawing on plan. Zinc angle seam traditional fully supported cladding composed of standing seam trays seamed together on site. In such case, you need to use a radial array.