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HU
MA
N IM
PACT
SA
FETY
REQ
UIR
EMEN
TSNZ
S 42
23: P
ART
3: 1
999
Inco
rpor
atin
g NZ
Bui
ldin
g Co
de c
hang
es u
p to
Apr
il 20
13
A GU
IDE
TO
YES
YES
YES
YESYESYES
YES
NO
NO
NO
NO
NO
YES YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO NO
*SAFETY GLASS MEETS THE REQUIREMENTS OF EVERY SITUATION.
GLAZING NOT COVERED BY NZS 4223:PART 3:1990.
GLAZING NOT COVERED BY NZS 4223:PART 3:1990.
HIGH RISK ACTIVITY BUILDING (CLAUSE 303.10).
SCHOOLS AND EARLY CHILDHOOD CENTRES (CLAUSE 303.9).
SIDE PANELS (CLAUSE 305).
INTERNAL PARTITIONS (CLAUSE 311).
BATHROOMS AND SPA POOLS (CLAUSE 308). F2/ASI amend2.
DOORS (CLAUSE 304).
Grade A Safety Glazing to table 3.1.
Grade A Safety Glazing to table 3.4, 3.5 and comply with 303.1.
Glazing subject to specific design and comply with 303.1.
Design to windload requirements, refer NS4223 Part 4
Glazing must meet the requirements of B1/AS1 amend 11 - Use GANZ Table FF1..
Grade A Safety Glazing to tables 3.1 and 3.4.
Grade A Safety Glazing to tables 3.1 and 3.4.
Grade A Safety Glazing to tables 3.1 and 3.4.
Note: If it is a stairwell or porch, refer clause 313 below.
*Annealed Glass to table 3.3 (Clause 316) Unless other situations apply.
*Annealed Glass to table 3.3.
*Annealed Glass to column 2 table 3.2. 5mm minimum thickness.
Grade A Safety Glazing to table 3.1 and comply with 303.1.
Glazing to table 3.4. 10mm minimum thickness and comply with 303.1.Glazing to table 3.4. and comply with 303.1.
*Annealed Glass to column 1 table 3.2 (max. area 0.5m2).
Grade A or B Safety Glazing to table 3.1.Where 4mm vinyl-backed mirror is used the maximum area is 3.0m2.
Grade A or B Safety Glazing to table 3.1.Or *Annealed glass to column 2 table 3.2.
*Annealed Glass to column 3 table 3.2 and comply with 303.1.
*Annealed Glass to column 3 table 3.2.
*Annealed Glass to column 3 table 3.2, 10mm minimum.
*Annealed Glass to column 2 table 3.2.
Grade A Safety Glazing to tables 3.1.
Toughened Safety Glass 6mm minimum thickness.
Toughened Safety Glass 10mm min. and comply with 303.1.
Toughened Safety Glass 10mm min. and comply with 303.1.
Toughened Safety Glass 5mm minimum thickness.
Is it for furniture glass, cabinet glass, general wall mirrors, internal glass fitments, horticultural use, lift cars, or sloped glazing?
Is the glass protecting a level of 1000mm or more?
Is the glazing within 2000mm of the floor?
Is the glass for a building with high risk activity areas, e.g. gymnasium,swimming pools, parts of schools, halls, public viewing galleries, stadiums etc.?
Is it for a school orearly childhood centre?
Is it a dooror side panel?
Is the lowest part of the glass less than 800mmabove floor, ground or verandah deck level?
Is it for a bathroom or spa pool? Is it for a shower or bath enclosure?
Is the vertical visibleedge less than 300mmfrom the nearest door?
Is the panel curved or greater than 30˚ to the door plane?
Is it hinged, revolvingand hinged and/orsliding bi-fold?
Is the glass areagreater than 0.5m2?
Is it for wardrobeor closet use?
Is it for roller, tiltingor sectional doors?
Is it for a movableglazed panel for displays?
Is it within 1500mm of the floor or standing area of the bath or shower?
Is it for a door?
Is it besidea door?
Is it fully framed? transom? (See note #1)Is ther one or more horizontal
Does it have one unframed or twoopposite unframed edges?
Does it have at least two adjacent or threeor more unframed edges, or is it frameless?
Is it a high activity area?
Is it a sliding door?
Is the side panel a glazedinternal partition withmore than one panel withunframed edges?
Is the glass greaterthan 2000mm wide?
Is the glazingfully framed?
Is it a shop front?
Are one or moreside edges unframed?
Are the edgesexposed?
Are the panelsadjacent to a door?
Is there glazingwithin 500mmof the floor level?
Is the glass width lessthan or equal to 500mm?
Are the edges exposed?
Is the glass 10mm annealed or thicker?
Is the glassheight less than orequal to 1000mm?
Is there acrash rail?(See note #1)
Not classifiedas a side panel.Refer to 306Unimpeded pathof travel
YES
YES
YES
YES
NO
YES
NO
YES
NO
YES YES
YES
YES
YES
YESYESYES
YES
YES
YES
NO
NONO
NO
NO
NO
NO
NO
NO
NO
YES
YES
NO NO NO NO NO NOYESNO
NO
NO
NO
NONO
NO
FENCES AND BALUSTRADES (CLAUSE 312).
STAIR WELLS AND PORCHES (CLAUSE 313).
GLAZING NOT COVERED BY NZS 4223:PART 3:1999.
FIRE RATED (CLAUSE 315).
YES
YES
LEADLIGHTS (CLAUSE 314).
UNIMPEDED PATH OF TRAVEL (CLAUSE 306).
YES
LOUVRES (CLAUSE 317).
NO
TWO EDGE UNFRAMED WINDOWS (CLAUSE 321).YES YES
OTHER GLAZING (CLAUSE 316).YES
NONOYES
FACETED GLAZING (CLAUSE 318).YES
LOW LEVEL AND WINDOW SEATING GLAZING (CLAUSE 307).
YES
YES
NO
NO
YES YES
Glass selected to table 3.5.
Toughened Safety Glass. Specific design to NZS 4203 clause 3.5.
Grade A Safety Glass to table 3.1.
Grade A Safety Glazing to table 3.1.
Grade A Safety Glazing to table 3.1 and 303.1.
Glazing to table 3.7 (Glass protecting a different level).
Grade A Safety Glazing to table 3.4, 3.5 and 303.1.
Glazing to table 3.7 whether or not it protects a different level.Glazing outside the scope of this standard – Apply windload design.
*Annealed glass to column 2 table 3.2 for individual pieces.
*Annealed Glass column 2 table 3.2.
*Annealed glass column 2 table 3.2. 5mm minimum thickness.
Glazing to table 3.3.
*Annealed Glass to column 1 table 3.2 and comply with 303.1.
*Annealed Glass to column 3 table 3.2 and comply with 303.1.*Annealed Glass to column 1 table 3.2 and comply with 303.1.
*Annealed Glass 4mm minimum thickness. Grade A Safety Glazing to table 3.1. 6mm thickness.
Toughened Safety Glass. Specific design to NZS 4203 clause 3.5.Grade A Safety Glass to table 3.8.
Is it fully framed?
Is the glass area greater than 0.3m2
Is it for an internal partition?
*Annealed glass to manufacturers’ recommendations.
SHOP FRONT GLAZING (CLAUSE 309).Glazing to column 3 table 3.2 – Glass Fins to Appendix 3.E.
*Annealed Glass column 3 table 3.2.
Is it fire rated?
Does it have louvres?
Grade A safety glazing material to column 2 table3.2. Glazing to windload requirements.
*Annealed glass to table 3.3 for windloads up to 1.3 kPa ULS.
Is it mirror wall cladding?
Select glass to table 3.6. Is the glass faceted?
Glazing to table 3.7 (Glass protecting a different level).
Are there at least two risers?
Is it a two edge unframed window? Is it in a human impact areas?
MIRROR WALL CLADDING (CLAUSE 319).Grade A safety glazing material. Not covered by Part 3.
Grade A safety glazing material.
Grade A or Grade B fire rated glazing material to table 3.1.
Is the lowest part of the glass less than 500mm above the highest abutting floor level?
Is it a structural member supporting a handrail?Is it for a balustrade or fence?
Is the top edge within 1500mm of floor level?NO
Is it fully framed? YES
Is the glass two edge supported with a supported handrail?
Is the glass within 2000mm horizontally of the bottom riser?
Is the glazing within 2000m of the floor?
Is it in a stairwell or porch?
Is it a Human impact area?Is it a lead light? YES
YESYESYESIs the glazing within
700mm of the floor?
Is the height of the panel greater than 1000mm at any part?
Is the glazing above 500mm
of the floor level?
Is the glazing for a
shopfront?
Is the glazing panel less than
or equal to 500mm in
width?
Is there a fixed glazing bar between
500-1000mm from the floor?
Is the glazing protecting a difference in
level of 1000mm or
more?
Is the panel marked by an opaque band
or other treatment?
Refer clause 303.1
Is it fully framed?
YES
YES
Is the lowest part of the glass within 500mm of floor level or capable of being a window seat?
Is the glazing height greater than
1000mm and width greater than 500mm
Does the window have a ledge wider than 200mm within 1000mm of the floor and extend down within
500mm of the floor or seat level?
Does it protect a difference in levels of 1000mm or more?
Does it protect a difference in levels of 1000mm or more?
NO
Is it an internal or external shopfront?
Is it commercial fenestration for the display of products and services?
Is it located within 1000mm horizontally of a public walking surface?
Is it fully framed or fin jointed?
Is it fully framed or fin jointed?
YES
YES
YES
YES
YES
Are they in human impact areas?
Is it connected with vertical silicone joints to form a radius?
Is it within 2000mm of the floor in high activity areas? Is it for a general
wall mirror?
YES
NO
YESNO
YES
YES
NO
YES
YES
NO
NOYES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
NO
YESNO
NONO
YES
NO
NO
YES YES
YES
NO
YESNO
NO
NO
NONO
NO
NO
NO
NOYESYESYES
YES
NO
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES YES
NO
NO
NO
NOIs the top edge unframed?
YES
YES
YES
NO
Grade A Safety Glazing to table 3.1.
YES
NO
YES
NO
YES
Refer NZS 4223 Part 1.
YES
YES
YES
YESYESYES
YES
NO
NO
NO
NO
NO
YES YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO NO
NO
GLAZING NOT COVERED BY NZS 4223:PART 3:1990.
HIGH RISK ACTIVITY BUILDING (CLAUSE 303.10).
SCHOOLS AND EARLY CHILDHOOD CENTRES (CLAUSE 303.9).
SIDE PANELS (CLAUSE 305).
INTERNAL PARTITIONS (CLAUSE 311).
BATHROOMS AND SPA POOLS (CLAUSE 308).
DOORS (CLAUSE 304).
Grade A Safety Glazing to table 3.1.
Grade A Safety Glazing to table 3.4, 3.5 and comply with 303.1.
Glazing subject to specific design and comply with 303.1.
Design to windload requirements.
Glazing must meet the requirements of table 3.7.
Grade A Safety Glazing to tables 3.1 and 3.4.
Grade A Safety Glazing to tables 3.1 and 3.4.
Grade A Safety Glazing to tables 3.1 and 3.4.
Note: If it is a stairwell or porch, refer clause 313 below.
*Annealed Glass to table 3.3 (Clause 316) Unless other situations apply.
*Annealed Glass to table 3.3.
*Annealed Glass to column 2 table 3.2. 5mm minimum thickness.
Grade A Safety Glazing to table 3.1 and comply with 303.1.
Glazing to table 3.4. 10mm minimum thickness and comply with 303.1.Glazing to table 3.4. and comply with 303.1.
*Annealed Glass to column 1 table 3.2 (max. area 0.5m2).
Grade A or B Safety Glazing to table 3.1.Where 4mm vinyl-backed mirror is used the maximum area is 3.0m2.
Grade A or B Safety Glazing to table 3.1.Or *Annealed glass to column 2 table 3.2.
*Annealed Glass to column 3 table 3.2 and comply with 303.1.
*Annealed Glass to column 3 table 3.2.
*Annealed Glass to column 3 table 3.2, 10mm minimum.
*Annealed Glass to column 2 table 3.2.
Grade A Safety Glazing to tables 3.1.
Toughened Safety Glass 6mm minimum thickness.
Toughened Safety Glass 10mm min. and comply with 303.1.
Toughened Safety Glass 10mm min. and comply with 303.1.
Toughened Safety Glass 5mm minimum thickness.
Is the glass protecting a level of 1000mm or more?
Is it glazing within 2000mm of the floor?
Is the glass for a building with high risk activity areas, e.g. gymnasium,swimming pools, parts of schools, halls, public viewing galleries, stadiums etc.?
Is it for a school orearly childhood centre?
Is it a dooror side panel?
Is the lowest part of the glass less than 800mmabove floor, ground or verandah deck level?
Is it for a bathroom or spa pool? Is it for a shower or bath enclosure?
Is the vertical visibleedge less than 300mmfrom the nearest door?
Is the panel curved or greater than 30˚ to the door plane?
Is it hinged, revolvingand hinged and/orsliding bi-fold?
Is the glass areagreater than 0.5m2?
Is it for wardrobeor closet use?
Is it for roller, tiltingor sectional doors?
Is it for a movableglazed panel for displays?
Is it within 2000mm of the floor?
Is it for a door?
Is it besidea door?
Is it fully framed? transom? (See note #1)Is ther one or more horizontal
Does it have one unframed or twoopposite unframed edges?
Does it have at least two adjacent or threeor more unframed edges, or is it frameless?
Is it a high activity area?
Is it a sliding door?
Is the side panel a glazedinternal partition withmore than one panel withunframed edges?
Is the glass greaterthan 2000mm wide?
Is the glazingfully framed?
Is it a shop front?
Are one or moreside edges unframed?
Are the edgesexposed?
Are the panelsadjacent to a door?
Is there glazingwithin 500mmof the floor level?
Is the glass width lessthan or equal to 500mm?
Are the edges exposed?
Is the glass 10mm annealed or thicker?
Is the glassheight less than orequal to 1000mm?
Is there acrash rail?(See note #1)
Not classifiedas a side panel.Refer to 306Unimpeded pathof travel
YES
YES
YES
YES
NO
YES
NO
YES
YES YES
YES
YES
YES
YESYESYES
YES
YES
YES
NO
NONO
NO
NO
NO
NO
NO
NO
NO
YES
YES
NO NO NO NO NO NOYESNO
NO
NO
NO
NOYES
NO
FENCES AND BALUSTRADES (CLAUSE 312).
STAIR WELLS AND PORCHES (CLAUSE 313).
GLAZING NOT COVERED BY NZS 4223:PART 3:1999.
FIRE RATED (CLAUSE 315).
YES
YES
LEADLIGHTS (CLAUSE 314).
UNIMPEDED PATH OF TRAVEL (CLAUSE 306).
YES
LOUVRES (CLAUSE 317).
NO
TWO EDGE UNFRAMED WINDOWS (CLAUSE 321).YES YES
OTHER GLAZING (CLAUSE 316).
YES
NONOYES
FACETED GLAZING (CLAUSE 318).YES
LOW LEVEL AND WINDOW SEATING GLAZING (CLAUSE 307).
YES
YES
NO
YES YES
Glass selected to table 3.5.
Toughened Safety Glass. Specific design to AS/NZS 1170 as modified by B1/VMI.
Grade A Safety Glass to table 3.1.
Design to windload requirements. Refer NZS4223 Part 4.
Grade A Safety Glazing to table 3.1.
Grade A Safety Glazing to table 3.1 and 303.1.
Glazing to barrier requirements of AS/NZS 1170 as modified by B1/VMI..
Grade A Safety Glazing to table 3.4, 3.5 and 303.1.
Glazing to barrier requirements of AS/NZS 1170 as modified by B1/VMI.
*Annealed glass to column 2 table 3.2 for individual pieces.
*Annealed Glass column 2 table 3.2.
*Annealed glass column 2 table 3.2. 5mm minimum thickness.
Glazing to table 3.3.
*Annealed Glass to column 1 table 3.2 and comply with 303.1.
*Annealed Glass to column 3 table 3.2 and comply with 303.1.*Annealed Glass to column 1 table 3.2 and comply with 303.1.
Is it fully framed?Is it for an internal partition?
*Annealed glass to manufacturers’ recommendations.
SHOP FRONT GLAZING (CLAUSE 309).Glazing to column 3 table 3.2 – Glass Fins NZS4223 Part 1 Section 5.4.
*Annealed Glass column 3 table 3.2.
Is it fire rated?
Does it have louvres?
Grade A safety glazing material to column 2 table3.2. Glazing to windload requirements. Note, If protecting a fall of 1m or more they are barriers.
*Annealed glass to table 3.3 for windloads up to 1.3 kPa ULS.
Is it mirror wall cladding?
Select glass to table 3.6. Note, If protecting a fall of 1m or more they are barriers.
Is the glass faceted?
Glazing to barrier requirements of AS/NZS 1170 as modified by B1/VMI..
Are there at least two risers?
Is it within 2000mm of the floor and not covered elsewhere?
Is it a two edge unframed window? Is it in a human impact areas?
MIRROR WALL CLADDING (CLAUSE 319).Grade A safety glazing material. Not covered by Part 3.
Grade A safety glazing material.
Grade A or Grade B fire rated glazing material to table 3.1.
Is the lowest part of the glass less than 500mm above the highest abutting floor level?
Is it a structural member?Is it for a balustrade or fence?
Is the top edge within 1500mm of floor level?NO
Is the glass within 2000mm horizontally or vertically from any part of the stair or landing?
Is it protecting a fall of 1m or more?
Is it in a stairwell or porch?
Is it a Human impact area?Is it a lead light? YES
YESYESYESIs the glazing within
700mm of the floor?
Is the height of the panel greater than 1000mm at any part?
Is the glazing above 500mm
of the floor level?
Is the glazing for a
shopfront?
Is the glazing panel less than
or equal to 500mm in
width?
Is there a fixed glazing bar between
500-1000mm from the floor?
Is the glazing protecting a difference in
level of 1000mm or
more?
Is the panel marked by an opaque band
or other treatment?
Refer clause 303.1
Is it fully framed?
YES
YES
Is the lowest part of the glass within 500mm of floor level or capable of being a window seat?
Is the glazing height greater than
1000mm and width greater than 500mm
Does the window have a ledge wider than 200mm within 1000mm of the floor and extend down within
500mm of the floor or seat level?
Does it protect a difference in levels of 1000mm or more?
Does it protect a difference in levels of 1000mm or more?
NO
Is it an internal or external shopfront?
Is it commercial fenestration for the display of products and services?
Is it located within 1000mm horizontally of a public walking surface?
Is it fully framed or fin jointed?
Is it fully framed or fin jointed?
NO
YES
YES
YES
YES
Are they in human impact areas?
Is it connected with vertical silicone joints to form a radius?
Is it within 2000mm of the floor in high activity areas? Is it for a general
wall mirror?
YES
NO
YES
NO
YES
YES
NOYES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
NO
YESNO
NONO
YES
NO
NO
NO
YES YES
YES
NO
YESNO
NO
NO
NONO
NO
NO
NO
NOYESYESYES
YES
NO
NO
YES
NO
YES
YES
YESYES
YES
YES YES
NO
NO
NO
NOIs the top edge unframed?
YES
YES
YES
NO
Grade A Safety Glazing to table 3.1.
YES
NO
YES
NO
YES
Refer NZS 4223 Part 1. Note, If protecting a fall of 1m or more they are barriers.
GLAZING PROTECTING A LEVEL (CLAUSE 310)
Is it protecting a fall of 1m or more NO NO
YES Use GANZ table FH1, FH2.
If protecting a fall of 1m or more use GANZ Table FH1, FH2.
Grade A Safety glazing to AS/NZS 1170 as modified by B1/VMINote, use GANZ balustrade design tables.
Note: For schools refer to MOE Policy.
Note: For schools refer to MOE Policy.
Max. Areas Of Safety Glazing Material For Fully Framed Glazing
Type of Glass Thickness Grade A Maximum Area (m2)
Toughened
Safety Glass
4mm 2.0
5mm 3.0
6mm 4.0
8mm 6.0
10mm 8.0
12mm 10.0
Laminated
Safety Glass
6mm 3.0
8mm 5.0
10mm 7.0
12mm 9.0
Type of Glass Thickness Grade B Maximum Area (m2)
Wired Safety Glass 6mm 1.5
TABLE 3.1 (ABRIDGED)
Maximum Areas Of Annealed Glass For Fully Framed Glazing (m2)
ThicknessColumn 1 High Risk
Column 2 Medium Risk
Column 3 Low Risk
3mm 0.05 0.1 0.3
4mm 0.2 0.3 1.1
5mm 0.5 1.2 2.2
6mm 0.9 2.1 3.3
8mm 1.8 3.2 4.5
10mm 2.7 4.4 6.0
12mm 4.5 6.3 8.0
15mm 6.3 8.2 10.0
19mm 8.5 10.3 12.0
TABLE 3.2 (ABRIDGED)
Max. Thickness Of Annealed Glass For Fully Framed Glazing
Thickness Fully Framed Max Area (m2) (at 1.3 kPa)
3mm 0.5
4mm 2.0
5mm 3.3
6mm 4.6
8mm 7.0
10mm 9.5
12mm 12.0
15mm 16.0
19mm 16.0
Maximum areas based on a 1.3kPa ULS face loading. Use windload design charts for wind pressures over 1.3kPa.
TABLE 3.3 (ABRIDGED)
Clause 303.1 Manifestation
Where transparent glazing material may be mistaken for a doorway or an unimpeded path of travel, (as defined in 306), the presence of glazing shall be made apparent either by the provision of an opaque band complying with 303.1.2 and 303.1.3 across the full width of the glazed opening or by a motif or other decorative treatment (e.g. colonial bars). Where motifs or other decorative treatments are proposed, they shall provide similar levels of manifestation (when viewed from both sides) to the opaque band. Such markings are not a substitute for the use of safety glazing where this is required by this Part.303.1.2Where an opaque band is provided for manifestation, it shall be not less than 20mm in height and located so that the vertical distance from the floor level is:(a) Not less than 700mm to the upper edge of the band; (b) Not more than 1000mm to the lower edge of the band.303.1.3The band shall be readily apparent. This may be achieved either by ensuring that the band contrasts with the background or by increasing the width of the band. Note - A broken line or patterns are acceptable forms of warning bands.303.1.4A band or marking is not required where any one of the following applies:(a) The height of the glass panel is no greater than 1000mm at any part;(b) The width of the glass panel is no greater than 500mm at any part (includes individual panels in faceted glazing, refer 318);(c) There is no glazing within 500mm of the floor level;(d) The glass panel is provided with at least one fixed glazing bar, firmly attached to the styles to locate and protect each face of the glass. At least one glazing bar shall be located with its upper edge not less than 500mm, and its bottom edge not more than 1000mm, above the floor level. The glazing bar shall have a face width not less than 40mm.(e) Where safety glazing material is used in housing.Note: Commercial glazing must meet the requirements of NZBC Clause F2 and therefore 303.1. Glazing in housing does not need to meet the requirements of 303.1.
Height of Glass (span) (m)
Type of Glass
Minimum Standard Nominal
Thickness (mm)
Maximum Number of
Vertical Butt Joints Per Opening
Max. Number of Individual Glass Panels Per Opening
Maximum Individual
Panel Width (mm)
≤1.3 Annealed 5* 2 3 1000
Annealed 6* No Limit No Limit No Limit
Toughened† 4 2 3 1000
Toughened† 5 No Limit No Limit No Limit
Laminated†‡ 6 2 3 1000
Laminated†‡ 8 No Limit No Limit No Limit
>1.3≤2.0 Annealed 6* 1 2 1200
Annealed 8* 2 3 1000
Annealed 10 2 3 1200
Toughened† 6 2 3 1000
Toughened† 8 No Limit No Limit No Limit
Laminated†‡ 6 2 3 1000
Laminated†‡ 8 2 3 1200
Laminated†‡ 10 No Limit No Limit No Limit
>2.0≤2.6 Annealed 8* 1 2 1200
Annealed 10 2 3 1000
Annealed 12 2 3 1200
Toughened† 8 No Limit No Limit No Limit
Toughened† 10 No Limit No Limit No Limit
Laminated†‡ 8 1 2 1200
Laminated†‡ 10 2 3 1200
Laminated†‡ 12 No Limit No Limit No Limit
>2.6≤3.0 Annealed 10 1 2 1200
Annealed 12 2 3 1000
Toughened† 10 No Limit No Limit No Limit
Toughened† 12 No Limit No Limit No Limit
Laminated†‡ 10 2 3 1000
Laminated†‡ 12 2 3 1200
* Minimum 10mm for side panels (refer 305.1.3). † Safety glazing material Grade A to AS/NZS 2208 (refer Appendix 3.B). ‡ Based on total glass thickness only (interlayer thickness not included and should be added). Note: (1) Heights above 3.0m require specific design. (2) Adequate edgecover is required to retain the glass under load (refer 303.2, and tables 25 & 27 of NZS 4223: Part 1). (3) Safety glass design is based on a maximum 0.45 kPa ULS pressure. (4) Refer to 303.4 for a definition of unframed edges.
TABLE 3.4 - INTERNAL PARTITIONS WITH UNFRAMED SIDE EDGES
Height of Glass (span) (m)
Type of Glass
Min. Standard Nominal
Thickness (mm)
Max. # of Vertical Butt
Joints Per Opening
Max. # of Individual
Glass Panels Per Opening
Max. Individual
Panel Width (mm)
≤1.3 Annealed 8 1 2 1200
Annealed 10 No Limit No Limit No Limit
Toughened* 6 2 3 1200
Toughened* 8 No Limit No Limit No Limit
Laminated*† 8 2 3 1200
Laminated*† 10 No Limit No Limit No Limit
≤1.3≤2.0 Annealed 8 1 2 1200
Annealed 10 2 3 1000
Annealed 12 2 3 1200
Toughened* 8 2 3 1200
Toughened* 10 No Limit No Limit No Limit
Laminated† 10 1 2 1200
Laminated† 12 2 3 1000
≤2.0≤2.6 Annealed 10 1 2 1200
Annealed 12 2 3 1000
Toughened* 8 1 2 1500
Toughened* 10 2 3 1200
Toughened* 12 No Limit No Limit No Limit
Laminated*† 10 1 2 1200
Laminated*† 12 2 3 1000
≤2.6≤3.0 Annealed 12 1 2 1200
Toughened* 10 1 2 1500
Toughened* 12 2 3 1200
Toughened* 15 No Limit No Limit No Limit
Laminated*† 12 1 2 1200
* Miniumum 10mm for side panels (refer 305.1.3). † Safety glazing material Grade A to AS/NZS 2208 (refer Appendix 3.B). † Based on total glass thickness only (interlayer thickness not included and should be added). (1) Heights above 3.0m require specific design. (2) Adequate edgecover is required to retain the glass under load (refer 303.2, and tables 25 & 27 of NZS 4223: Part 1). (3) Safety glass design is based on a maximum 1.1 kPa ULS pressure. For pressures over 1.1 kPa specific design is required. (4) Refer to 303.4 for a definition of unframed edges.
TABLE 3.5 SHOPFRONTS WITH UNFRAMED SIDE EDGES
Minimum glass thickness and type for ULS wind pressures
Internal Glazing External wind glazing areas
Max. Height
Max. Radius 0.45 kPa
Low 0.51 to 0.65 kPa
Medium 0.66 to 0.85 kPa
High 0.86 to 1.2 kPa
Very High 1.21 to 1.55 kPa
Up to 1.3m
2m 3m 4m
5mm T, 6mm, A 6mm A, L, T 6mm A, L, T
5mm T, 6mm, A, L 6mm A, L, T 8mm A, L, T
6mm A, L, T 8mm A, L, T 10mm A, L, T
8mm A, L, T 10mm A, L, T 12mm A, L, T
10mm A, L, 8mm, T 12mm A, L, 8mm, T 12mm A, L, 8mm, T
Up to 1.3m
Over 4m 6mm A 8mm L 5mm T
8mm A 8mm L 5mm T
8mm A 8mm L 6mm T
10mm A 10mm L 8mm T
12mm A 12mm L 8mm T
1.31m to 2m
2m 3m 4m
5mm T, 6mm A,L 6mm A, L, T 8mm A, L, T
5mm T, 6mm A,L 6mm L, T 8mm A, L, T
6mm A, L, T 8mm A, L, T 10mm A, L, T
8mm A, L, T 10mm A, L, T 12mm A, L, T
10mm A, L, T 15mm A, 12mm T 15mm A, 12mm T
1.31m to 2m
Over 4m 10mm A 10mm L 8mm T
10mm A 12mm L 8mm T
12mm A 12mm L 8mm T
15mm A SD 10mm T
15mm A SD 12mm T
2.1m to 2.6m
2m 3m 4m
6mm A, L, T 6mm A, L, T 8mm A, L, T
6mm A, L, T 6mm A, L, T 8mm A, L, T
6mm A, L, T 8mm A, L, T 10mm A, L, T
8mm A, L, T 10mm A, L, T 12mm A, L, T
10mm A, L, T 15mm A, L, T 15mm A, L, T
2.1m to 2.6m
Over 4m 12mm A 8mm T 12mm L
15mm A 10mm T SD
15mm A 12mm T SD
19mm A 12mm T SD
SD 15mm T SD
Over 2.6m
Any Radius SD SD SD SD SD
Key: A= Annealed Glass, L=Laminated Safety Glass, T= Toughened Safety Glass, SD= Specific Design Required.
Note: The maximum glass size may be restricted by the maximum allowable area according to sections 306, 307 and 310.
TABLE 3.6 FACETED GLAZING
HUMAN IMPACT SAFETY REQUIREMENTSNZS 4223: PART 3: 1999
Incorporating NZ Building Code changes up to April 2013
GANZ TABLESRefer to GANZ Tables for design as follows;FF1 – Fully Framed Glazing Safeguarding a Fall of 1 Metre or MoreFH1, FH2 – Full Height Partly Framed Glazing Safeguarding a Fall of 1Metre or More SB1-Structural Balustrade - Cantilevered glassSB2-Structural Balustrade - 2 Edge - Point FixedSB3-Structural Balustrade - 2 Edge SupportSB4-Structural Balustrade - 3 Edge SupportIB1-Infill Balustrade - 4 Edge SupportIB2-Infill Balustrade - 2 Edge SupportIB3-Infill Balustrade - 2 Edge – Point fixed with structural handrail in front of glassIB4-Infill Balustrade - 2 Edge – Point FixedIB5-Infill Balustrade – 2 Edge – Clamped Fixed (no holes in glass)
