grating stair treads hand railing trench covers

www.supergrid.co.za
 grating stair treads hand railing trench covers

te quality!
For gra
SUPERGRID Manufacturing (Pty) Ltd.
Manufacturers and suppliers of
Open Grid Steel Flooring, Grating, Stair Treads,
Hand Railing and Trench Covers
to all areas of industrial applications including:

MINING HOUSES
REFINERIES
PETROCHEMICAL PLANTS
LIGHT INDUSTRY

Supergrid products have become synonymous

with high standards of quality and workmanship for over 30 years.

Supergrid engineers are qualified to discuss

and advise on any special requirements and
technical details, the correct grating for a
particular application, fixing and prices.

Quotations are given in good faith on

information available and on current costs at
the time of quoting. We reserve the right to
adjust if necessary before an order is accepted.

All Supergrid grating is sold on the

understanding that adequate supports are utilised,
and the onus is on the client to ensure that this is done.

1
www.supergrid.co.za
grating stair treads hand railing trench covers

ORDERING INFORMATION
OPEN STEEL FLOORING
! The depth and thickness of the bearer bars
! The size of the panel/panels required, first dimension being the
direction of the bearer bars
! Hole centres required
! Surface type: Smooth, Serrated or Non-Slip
! Type of finish
! Full details and drawing/sketch of Custom-Tailored Panels or
complete floor required
! Fixing Requirements

STAIR TREADS
! Overall length and width of Stair Tread
! Bearer Bar size
! Smooth or Serrated
! Side plate requirement
! Type of finish

SUPERGRID Manufacturing (Pty) Ltd.

7 KYA SAND ROAD, KYA SAND
PO BOX 1554
BROMHOF 2154

TEL +27-11-462-5295
FAX +27-11-462-5234
Email: sales@supergrid.co.za

2
 grating stair treads hand railing trench covers

GRATING TERMINOLOGY
Hole Centres Surface Type
The distance from The top edge of the
centre to centre of grating which can
the bearer bar and be either Smooth,
transverse bars. Serrated or Non-Slip.

Length/Span/Bearer Bar Width/Transverse Bar

The overall length of This dimension is
the grating panel. This measured in the
dimension is always the opposite direction
length of the bearer bar to the length/span/
and indicates the span. bearer bar.
This dimension can be
less than the width.
This must run from
support to support.

Banded Kick Flat

A flat bar, the same A flat bar larger than
size as the bearer the bearer bar that
bar, is welded to the projects above the
perimeter of a top of the grating,
grating panel. welded to the edge
of either the panel
and or any cut outs.

Non-Slip Nosing Cut-out

A non-slip plate A section of flooring
welded to edge of cut out to allow
the grating on a pipes, structural
landing area from a steel work to pass
staircase. Also used through or to create
on the front of a space for any other
stair tread. obstructions.

Gross Area
The overall size of a
rectangular panel
before any cut outs
are made. This is what
A A A will be charged for.

B
3 B B
Unbanded Standard Panels
Supergrid standard panels are available ex-stock.
Other sizes can be manufactured on request.
Supergrid unbanded standard panels are manufactured in
SG43/50, SG50/50, SG43/40, SG44.5/50 and SG44.5/40.

SPAN

Length x Span
BEARER
BAR (first dimension being
direction of bearer bar)
1 200mm x 1 200mm

TRANSVERSE 2 400mm x 1 200mm

BAR
3 000mm x 1 200mm
WIDTH

Custom Tailored Grating

Supergrid Tailored Grating is used for new installations
and for the replacement of complete floors. Tailored Grating
is manufactured to customer specifications, usually in the
form of detailed drawings.

Viva Engineering - MMD Belfast

Supergrid supply turn-

key component
packages to suit any
installation and all
components are checked
for quality and fit before
despatch.
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 Standard Types Of Grating
All Grating is available with either 6mm or 7.6mmØ Transverse Bars.
SG43/40 and SG44.5/40 only available with 7.6mmØ Transverse Bars
SG 43/50 Smooth Surface Serrated Surface Non-Slip Surface
BEARER BAR

43

50
Hole centres available in the range are:
TRANSVERSE BAR Smooth Surface | 43x50 | 50x50 | 43x40 | 44.5x50 | 44.5x40 |
SG 50/50 Serrated Surface | 43x50 | 50x50 | 44.5x50 |
Non-Slip Surface | 43x40 | 44.5x40 |
BEARER BAR
50
Grating Mass (Kg) Mass Per Std. Panel (2400 x 1200mm)
Grating Bearer Transverse
Uncoated / Black
Type Bar Bar Bitumen Dipped Galvanised
6 mm 70.60 kg 77.70 kg
50
25 x 4.5mm
7.6 mm 79.50 kg 87.38 kg
TRANSVERSE BAR
6 mm 82.50 kg 89.90 kg
SG 43/40 30 x 4.5mm
SG 43/50 7.6 mm 91.50 kg 99.55 kg
BEARER BAR
6 mm 106.50 kg 115.00 kg
43
40 x 4.5mm
7.6 mm 115.00 kg 124.04 kg
50 x 4.5mm 7.6 mm 139.00 kg 150.16 kg

6 mm 65.56 kg 72.12 kg
25 x 4.5mm
7.6 mm 75.82 kg 83.40 kg
40 6 mm 76.06 kg 82.90 kg
TRANSVERSE BAR 30 x 4.5mm
SG 50/50 7.6 mm 86.32 kg 94.09 kg
SG 44.5/50
6 mm 96.83 kg 104.57 kg
BEARER BAR 40 x 4.5mm
44.5
7.6 mm 107.09 kg 115.66 kg
50 x 4.5mm 7.6 mm 128.44 kg 138.71 kg

25 x 4.5mm 7.6 mm 84.72 kg 92.88 kg

30 x 4.5mm 7.6 mm 96.72 kg 105.05 kg
SG 43/40
40 x 4.5mm 7.6 mm 120.22 kg 129.55 kg
50
TRANSVERSE BAR 50 x 4.5mm 7.6 mm 144.22 kg 155.66 kg

25 x 4.5mm 7.6 mm 76.50 kg 82.60 kg

SG 44.5/40
BEARER BAR 30 x 4.5mm 7.6 mm 88.10 kg 95.20 kg
SG 44.5/50
40 x 4.5mm 7.6 mm 111.50 kg 120.40 kg
44.5
50 x 4.5mm 7.6 mm 134.80 kg 145.60 kg

25 x 4.5mm 7.6 mm 81.46 kg 87.97 kg

30 x 4.5mm 7.6 mm 93.12 kg 100.57 kg
SG 44.5/40
40 x 4.5mm 7.6 mm 116.45 kg 125.76 kg
40
TRANSVERSE BAR 50 x 4.5mm 7.6 mm 139.78 kg 150.96 kg

5
GRATING SAFE LOAD TABLES
* Loads determined by Max Deflection U = Uniformly distributed load in Kg per m²
1
( of span or 10mm max) C = Concentrated load in Kg/m
200

SG 43/50, SG 43/40 & SG 43/100 Span (mm)

Bearer Bar Size 500 mm 750 mm 1000 mm 1250 mm 1500 mm 1750 mm 2000 mm

25 x 4.5 mm U 6050 kg 2685 kg 1140 kg 580 kg 309 kg - -

C 1510 kg 1000 kg 756 kg 432 kg 295 kg - -

30 x 4.5 mm U 8700 kg 3870 kg 1980 kg 1015 kg 535 kg 338 kg -

C 2180 kg 1450 kg 1090 kg 870 kg 518 kg 369 kg -

40 x 4.5 mm U 15485 kg 6880 kg 3870 kg 2475 kg 1270 kg 800 kg 528 kg

C 3875 kg 2580 kg 1935 kg 1548 kg 1290 kg 873 kg 672 kg

50 x 4.5 mm U 24190 kg 10752 kg 6048 kg 3870 kg 2688 kg 1560 kg 1025 kg

C 6048 kg 4032 kg 3027 kg 2415 kg 2016 kg 1728 kg 1305 kg
For load bearing of SG86/50, 86/80 & SG86/100, half of the mass loadings above apply

SG 50/50 & SG 50/100 Span (mm)

Bearer Bar Size 500 mm 750 mm 1000 mm 1250 mm 1500 mm 1750 mm 2000 mm

25 x 4.5 mm U 5186 kg 2301 kg 977 kg 497 kg 265 kg - -

C 1294 kg 857 kg 648 kg 370 kg 253 kg - -

30 x 4.5 mm U 7457 kg 3317 kg 1697 kg 870 kg 459 kg 290 kg -

C 1869 kg 1243 kg 934 kg 746 kg 444 kg 316 kg -

40 x 4.5 mm U 13273 kg 5897 kg 3317 kg 2121 kg 1089 kg 686 kg 453 kg

C 3321 kg 2211 kg 1659 kg 1327 kg 1106 kg 748 kg 576 kg

50 x 4.5 mm U 20734 kg 9216 kg 5184 kg 3317 kg 2304 kg 1337 kg 879 kg

C 5184 kg 3456 kg 2595 kg 2070 kg 1728 kg 1481 kg 1119 kg
For load bearing of SG100/50 & SG100/100, half of the mass loadings above apply

SG 44.5/50, SG44.5/40 & SG 44.5/100 Span (mm)

Bearer Bar Size 500 mm 750 mm 1000 mm 1250 mm 1500 mm 1750 mm 2000 mm

25 x 4.5 mm U 5658 kg 2519 kg 1070 kg 543 kg 290 kg - -

C 1417 kg 938 kg 708 kg 405 kg 255 kg - -

30 x 4.5 mm U 8165 kg 3632 kg 1858 kg 952 kg 501 kg 317 kg -

C 2047 kg 1359 kg 1021 kg 817 kg 485 kg 345 kg -

40 x 4.5 mm U 14536 kg 6458 kg 3632 kg 2323 kg 1191 kg 750 kg 495 kg

C 3636 kg 2420 kg 1817 kg 1451 kg 1210 kg 819 kg 630 kg

U 22708 kg 10092 kg 5676 kg 3632 kg 2523 kg 1463 kg 961 kg

50 x 4.5 mm 5676 kg 3882 kg 2951 kg 2266 kg 1891 kg 1622 kg 1224 kg
C

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 Standard Types Of Grating
SG 43/100
Double spacing on Bearer Bars and Transverse bars and permutations thereof
BEARER BAR
are also available, i.e.: SG 43/100, SG 43/80, SG 44.5/100, SG 86/50, SG 86/100,
SG 50/100, SG 100/50, SG 100/100, etc.
43

All permutations are available with 7.6mm Transverse bars only and surface
can be supplied either smooth, serrated or non-slip.

100

TRANSVERSE BAR

SG 86/50
BEARER BAR

86

50
TRANSVERSE BAR

Standard & Flanged Trench Covers

All Trench Covers are made with SG43/50
spacing and are available in Uncoated or
Hot Dipped Galvanized finish.

Supergrid standard Trench Covers are

available ex-stock. Other sizes can be
manufactured on request.
Bearer Bar Width (mm) Length (mm)
25 x 4.5mm 250, 300, 325, 500 1000

30 x 4.5mm 250, 300, 325, 500 1000

40 x 4.5mm 250, 300, 325, 500 1000

50 x 4.5mm 250, 300, 325, 500 1000

7
Stair Treads
Stair Treads up to and including 750mm long are manufactured
with either 25 x 4.5mm or 30 x 4.5mm Bearer Bars

Stair Treads 700-1000mm and above are manufactured

with 30mm x 4.5mm or 40mm x 4.5mm bearer bars

Stair Treads with 40mm Bearer Bars are supplied with

80mm high side plates

Tolerance: +5mm on width, +0 -2mm on length.

Stair Treads in non-standard sizes are

available on request.

Stair Treads Side Plate Dimensions (mm)

45

20/40 45/65 40
60/80
16

30 HOLE CENTRES
WIDTH

Length (mm) Width (mm) Hole Centres (mm) Bearer Bars

205 115
500 25 x 4.5mm
245 150, 115
205 115
600 25 x 4.5mm
245 150, 115
205 115
750 245 150, 115 25 x 4.5mm
285 180, 150, 115 30 x 4.5 / 40 x 4.5mm

205 115
900 245 150, 115 30 x 4.5mm
285 180, 150, 115 40 x 4.5mm

205 115
30 x 4.5mm
1000 245 150, 115
40 x 4.5mm
285 180, 150, 115
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 Grating Fastening Methods
Saddle Clamp, Bracket, Bolt, Nylock Nut and Washer
The saddle engages over two transverse bars and is
tightened against either L-Bracket, Banana Clamp or
J-Clamp with Bolt, Nylock Nut and Washer.

Supergrid Fastener (Saddle and L-Bracket) Supergrid Banana and J-Clamp

Supergid Fasteners is only suited Banana and J-Clamp are universal to all Grating centres
for SG43/50 or SG43/100
J-Clamp is top
fastening which means
it can be tightened from
the top only as the nylock
nut is held in place by the
J-Clamp.

L-Bracket Banana Clamp J-Clamp

Viva Engineering - ADP Murowa

9
Welding Specifications
Bearer Bars to Banding -Grating Panels Round Bars to Banding Grating Panels

Banding Banding

Tack
Full weld over the depth of the grating Tack - Each round bar tacked to banding
Full weld over depth of grating Bearer Bar

Bearer Bars to Kickflat of Grating Panels and Round Bars and Banding to Kickflat of Grating
Bearer Bars to Sideplates of Stairtreads panels

Approx 80mm Approx 80mm

Kickflat Approx 200mm Kickflat

Full weld over the depth of the grating on each bearer bar
Weld on Kickflat and Banding
Tack Bearer Bar
Full weld

1
Grating Tolerances Longitudinal Bow 200 of length max

A Width ±6mm
B Length ±6mm
X Squareness ±6mm

X X

10
 Stanchions & Handrailing
Stanchions and
SUPERGRID Hand Railing are
Grating Radius Bend 90
O
supplied with zinc-
SU-TA 45O chromate primer
O
SU-T90 finish. They are also
available Hot Dip
Galvanised. Other
requirements can
be discussed.

Radius O
SU-SRA 45
BendO
135

O
SU-S 90

Angle Closure Bend

O SUPERGRID
Type SU-SLA 45 Stair Treads

Hand Railing - Ball Type Stanchions

* Available Angles ex-Stock are 40° and 45°. Other Angles are available on request (5° to 50° in 5° increments)

34 O.D.
500

500

*
1000

500
500

76

TYPE SU-T 90° TYPE SU-S 90° TYPE SU-TA

11
Hand Railing - Ball Type Stanchions
* Available Angles ex-Stock are 40° and 45°. Other Angles are available on request (5° to 50° in 5° increments)
500

500
500
* *

500
500
500

100
76

TYPE SU-R90° TYPE SU-SRA / SU-SLA TYPE SU-T-RA

500

305

305
305
305
500

76

76

100

TYPE SU-O 90° TYPE SU-SP-T TYPE SU-SP-S

34 O.D.
34 O.D.

43 O.D.
43 O.D.
255
180

10
60

50 50
50 50

TYPE SU-ET 90° TYPE SU-ES 90°

12
 Hand Railing - Bends & Closures
* Available Angles ex-Stock are 40° and 45°. Other Angles are available on request (5° to 50° in 5° increments)

60
60

60

R140
*

500
500 R140

90° LONG RADIUS BEND 90° STRAIGHT CLOSURE ANGLE CLOSURE BEND
BEND

60
60
60

R140

305
*

60
60

RADIUS BEND 90° SHORT RADIUS BEND 90° STRAIGHT CLOSURE

BEND, 305 CRS

60
75

(X)
75

KINK BEND SLIP JOINT FOR Ø 34

Kink bends are made up on site HANDRAILING
using two 90° Short Radius Bends
13
Stanchion Mounting Dimensions

43 O.D.

43 O.D.
43 O.D.

BASE
WIDTH BASE
60mm WIDTH
60mm

0
18
10

84
10
60

46
100 100
150 /
17,5O
150

TYPE SU-T TYPE SU-S TYPE SU-TA

TOP MOUNTING FOR SIDE MOUNTING ON TOP MOUNTING FOR
PLATFORM PLATFORM STAIRS

43 O.D. 37mm x 2,5mm

150

100
10

Peg Welded
to Stringer 10
60

100
150

TYPE SU-O TYPE SU-R TYPE SU-TRA

GOOSE NECK PEG MOUNTING TOP MOUNTING FOR
CONCRETE STAIRS

14
grating stair treads hand railing trench covers

e quality!
For grat

SUPERGRID Manufacturing (Pty) Ltd.

7 KYA SAND ROAD, KYA SAND
PO BOX 1554
BROMHOF 2154

TEL +27-11-462-5295
FAX +27-11-462-5234
Email: sales@supergrid.co.za

www.supergrid.co.za