Fabrication - General

Fabricate sections to accommodate and interface with work of other contracts by means of rabbets, interlocks, miscellaneous angles, trim and filler sections, as required.

Component fastenings shall be concealed throughout of adequate strength fabricated from stainless steel or shall be fusion welded.

Reinforce mullions with aluminium sections as required.  Secure aluminium sections with adequate anchors to structure.

Jointing and intersections of metals shall be accurately cut, fitted to a tolerance of 1 mm in true planes with adequate concealed fastenings and sealed.

Perform fitting and assembly of component part in shot; units which cannot be permanently shop assembled shall be fitted, assembled, marked and disassembled shall be assembled, marked and disassembled to assure proper fitting in the field.  Identify field assembly joints on shop drawings.

Fabricate all devices required for erection and adequate anchor-age and attachment including items required to be built into or attached to the structure for the support of the work.

Provide inconspicuous, baffled weep holes, to vent, pressure equalize and drain system cavities properly to exterior.

AR gaskets forming weather seals and air seals shall be formed into complete frames with vulcanized comer joints.

Fabricate internal drainage system with joints fully sealed.  Provide thermal movement joints in drainage system sealed watertight.  Conceal all fasteners.

All gaskets shall be free from all contact and migration staining and compatibles with all substrates, sealants and finishes with which they contact.

Fabricate framing accurately to angles shown.  Fill between framing members with closures.

Fabricate connections to structural steel frames to allow for thermal and load movement finish in color selected.

All exposed aluminium surfaces of frame sections, sill and cut-off shall have matching finish in selected.

Seal junctions of all horizontal and vertical aluminium members with joint tape and sealant.