Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Page 79 Page 80 Page 81 Page 82 Page 83 Page 84 Page 85 Page 86 Page 87 Page 88 Page 89 Page 90 Page 91 Page 92 Page 93 Page 94 Page 95 Page 96 Page 97 Page 98 Page 99 Page 100 Page 101 Page 102 Page 103 Page 104 Page 105 Page 106 Page 107 Page 108 Page 109 Page 110 Page 111 Page 112 Page 113 Page 114 Page 115 Page 116 Page 117 Page 118 Page 119 Page 120 Page 121 Page 122 Page 123 Page 124 Page 125 Page 126 Page 127 Page 128 Page 129 Page 130 Page 131 Page 132er Crossville-Shackerley. The sys- tem, commercially known as the “Sureclad® System,” was selected not only because of the ventilated rainscreen capabilities, but also because of the design attributes unique to this system: 1) access to remove and replace any porcelain panel, 2) flexibility for adjustment in all dimensions, and 3) properly designed components to allow for coastal wind loads, differential ther- mal movement and seismic activity. Design and engineering The fact that this wall system is completely pre-fabricated elimi- nates many of the typical field fab- rication challenges for tile contrac- tors. However, the trade-off is the challenge associated with complex coordination and understanding of dimensional tolerances and as- built field conditions – you simply cannot make any significant cuts to fit in the field, and the proper handling to prevent breakage due to lead times for prefabrication is critical. Another attribute of the Crossville-Shackerley Sureclad sys- tem was quick turn-around fabrica- tion at their U.S. facility. Figure 1 is an example of the precise design and engineering of the aluminum sub-frame for a full- scale mock-up of this project. The elevation of the framing indicates the placement and precise dimen- sion of each component. Despite our precise design, the construction of the back-up wall (metal studs and gypsum sheathing) was out of plumb as is all too common with most field- constructed rough wall systems. (For viewing the diagram in greater detail, visit the story at tileletter.com) Construction sequence Figure 2 shows the application of the air/moisture/vapor (AMV) barrier to the back-up wall sheath- ing. The AMV is a critical com- ponent of the continuous thermal and moisture-control function of a ventilated rainscreen wall. Even the penetrations for the aluminum support brackets fasteners through the AMV must be considered, as well as thermal breaks (green plas- tic isolation pads) between the alu- minum brackets and the structural back-up wall. Air/moisture/vapor TECH TALK –––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Figure 1 Figure 2 70 TileLetter | August 2016