Because of the shape of the system, it can achieve very tight radiuses or can be used in serpentine applications. Intermediate vertical mullions are generally not required for vertical installations.
Additional benefits include strong thermal performance, sound transmission control and adaptability to seismic code requirements.
Given the distinctive nature of channel glazing, some specific guidelines must be followed for proper installation. While not difficult or complex, the steps differ from more traditional glazing materials. The following guidelines provide general instructions for installing the product in exterior vertical applications. As with any specialty glazing, consult the supplier’ s documentation for specific installation instructions, including procedures for horizontal or interior installations.
1、Preparing the Structural Opening
Prior to fitting, the supporting structure must be checked to ensure that it is square, plumb and in plane. The support jambs must be plumb. All surfaces should be checked to ensure that they are suitable for attachment and conform to the contract documents.
2、Measuring and Attaching Aluminum Frames
Measure the opening sizes and cut the head, sill and jamb sections. Miter or cope and butt the joints at the head. Cope and butt joints at the sill.
When measuring the frames, take into account the caulking bead clearance requirements and shim with the appropriate-sized horseshoe-type plastic glazing shim. Expansion properties of the aluminum frame should be taken in to consideration. Consult the supplier for specific details.
To attach the aluminum frames to the structure, place all fasteners approximately 12 to 18 inches on center (300 to 450 mm), or as recommended by the engineer of record. Fasteners should be located no closer than 6 inches from the corner joints. Couple frame members exceeding 24 feet in length with an expansion joint material as supplied by TCP. The specific type of fastener required depends on whether the supporting structure is concrete, steel or wood. Refer to manufacturer* s table for typical types of fasteners for the various applications.
At all head/jamb mitered corner joints, install aluminum corner keys and internally seal corners
with approved silicone. At sill/jamb coped and butted corner joints, a screw boss is provided for corner assembly. After assembly, care must be taken to internally seal all joints.
Cut and fit plastic inserts into the head, jamb and sill sections of the frame. The vinyl inserts at the jamb should be fitted to the full daylight height of the opening and clip securely into the frame. The horizontal head and sill vinyl comes pre-cut to length to match the glass sizes and should be place intermittently (to match glass placements) in the sill and head of the frame. Finally, insert foam baffles into exterior weep holes.
3、Cutting channel glass
Tempered glass and annealed (at customer* s option) glass can be provided cut to length. If glass
is desired， or required, to be cut on site, the following procedures should be followed:
Place the glass channel on a flat surface, preferably cushioned with felt or other suitable materials. With the flanges pointed upward, channel glass channels can be cut by hand or by special saw. There should be a minimum glass bite allowance of }/i inches (20mm) for the head and jamb and Vi inches (13mm) for the sill. The flange cut (jamb) channels must have a bite or at least % inches (20mm).
To cut by hand:
Use a cutting template or straight edge to ensure a straight cut.
Begin by scoring the flange furthest away, starting at the corner and working upwards; return back to the corner of origin and start the cut across the face of the glass and continue up the flange closest to the cutter in one continuous motion.
Make a light glancing blow to the top edge of the flange opposite the cut on each side of the glass channel.
Place the glass-cutting tool under the glass channel and apply light pressure to the flanges of the glass to snap it cleanly across the cut line.
Ensure that the ends of the channels are free from chips, cracks or bad cuts (pay particular attention to the quality of the cut at the corners, there should be no notches or shark’ s teeth in this area).
Seam the ends of the glass with a disc or belt sander specifically designed for glass edging, taking
special care to smooth any irregularities caused by cutting