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南非土木工程施工标准 CG1部分：镶嵌玻璃在窗框和门套中的安装 英文原文节选 20100079 2-5 |
3 Definitions
For the purposes of this document, the following definitions apply.
3.1
back putty
portion of the glazing compound that remains between the back of the rebate and the glazing
material after the glazing material has been pressed into position
3.2
bedding putty
glazing compound in the rebate into which the glazing material is bedded
3.3
distance piece
spacer which maintains the distance between the glass and frame/glazing beads
3.4
front putty
fillet of glazing compound formed on the platform of the rebate in front of and in contact with the
glazing material
3.5
location block
spacer which ensures that there is sufficient side clearance between the glass and door jambs or
frames of pivoted, sliding or hinged windows (see figure 1)
3.6
pane
piece of glazing material cut to the size and shape required for glazing
3.7
setting block
spacer which supports the glass and ensures that there is sufficient bottom clearance between the
glass and the supporting frame (see figure 1)
3.8
specification data
data, provisions and variations that make this part of SANS 2001 applicable to a particular contract
or works (see annex A)
3.9
sprig
small wedge of tin or zinc used to hold the glass in the frame until the putty dries
4 Requirements
4.1 Materials
4.1.1 Glazing material
4.1.1.1 Glazing material shall comprise either glass that complies with the requirements of
SANS 50572-1 to SANS 50572-5 and SANS 1263-1, or polycarbonate sheeting.
4.1.1.2 The type and thickness of the panes shall be as shown in the drawings or indicated in the
specification data (see annex A).
SANS 2001-CG1:2007
Edition 1
5
4.1.2 General purpose putty
Putty shall comply with the requirements of SANS 680.
4.1.3 Bedding and sealing materials
Flexible compounds, sealants, and preformed strip materials shall be of a suitable quality, and
compatible with other materials with which they come into contact for the envisaged application.
4.1.4 Setting blocks
Setting blocks shall be rot-proof, non-absorbent and capable of maintaining the requisite edge
clearance without presenting local areas of stress to the glass.
NOTE Sealed hardwood or PVC is suitable material for blocks.
4.1.5 Frames
Frames shall be as shown in the drawings or in accordance with the provisions of the specification
data.
4.2 Preparation
4.2.1 Before commencing glazing operations, it shall be confirmed that
a) the fixing of the frame has been completed,
b) protective coatings or tapes have been removed from the frames,
c) rebates are free from obstructions and debris,
d) timber frames and concrete frames are free from excessive moisture content, and
e) all surfaces which are to come into contact with the bedding material have been primed or
sealed.
4.2.2 The surfaces, which will come into contact with glazing materials, shall be cleaned and dried.
All contaminants and any protective tape shall be removed.
4.2.3 All metal frames shall, before glazing, be painted with an anti-corrosive primer. Wooden
frames shall be primed with a primer that complies with the requirements of SANS 678.
4.2.4 Where pane areas exceed 0,3 m2, the glass shall be placed on one or two setting blocks
along the bottom edge (see figure 1). Setting blocks shall be between 25 mm and 75 mm long,
except at the bottom bar of vertically pivoted windows where a single block of length at least
150 mm is sufficient.
4.2.5 Glass sheets shall be checked for edge clearances which shall be not less than
a) 3 mm for glass of length or width up to 2 m, and
b) 5 mm for glass of length or width over 2 m.
4.2.6 Distance pieces shall be placed on opposite sides of the sheet at centres that do not exceed
300 mm, within 50 mm of corners and at bead fixing points.原件下载： 
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