Browsing articles in "Products & Profiles"

Polycarbonate & GRP

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL

Polycarbonate is one of the newer plastics to be used in the construction industry around the world. MODEK has been closely involved in the distribution and manufacture of profiled PC roof sheets during the past 10 years in South Africa.

The highest grade POLYCARBONATE polymer available from the leading manufacturers in the world, is used by MODEK. Modern co-extrusion technology is used in the manufacture of MODEK PC sheets, ensuring a high product quality and allowing for any transportable length of sheet to be made.

A layer of highly UV stabilised POLYCARBONATE is co-extruded on the weathering side of all MODEK PC roof sheets. This layer will not crack or delaminate, and ensures years of clear performance in the harsh South African climate.

A range of colours is manufactured with the standards being clear, white (opal 50) and bronze. Silver (Heat Stop), blue and green are also available subject to order quantity.

All the generally used profile shapes in South Africa, to match those of other non-translucent roofing and cladding sheets, are manufactured by MODEK in any transportable length.

New or additional roofing profiles can be manufactured by MODEK, but it must be noted that the time and cost incurred is considerable. Please contact MODEK’S Technical Department for more detailed information.

NOMINAL THICKNESS

The internationally accepted unit of measurement, as used by MODEK, for PC sheeting is the nominal thickness of the sheet.

This nominal thickness should be established by representative measurements (by vernier or micrometer) at various points across the full width of the sheet.

Owing to the inherent variances of tolerance which are experienced when profiling a thermoplastic extrusion, it will be found that the actual thickness will vary slightly from one point to another on the sheet.

MODEK manufactures two nominal thickness specifications:

  • 1.25 mm Nominal Thickness
  • 1.00 mm Nominal Thickness

A layer of UV protection PC is co-extruded on the weathering side of all MODEK PC roof sheets.

1.25 mm Nominal Thickness is deemed to be the Standard Weight Specification for all industrial installations. This specification will meet the rigorous conditions found in an industrial environment – particularly that of deflection under load (positive and negative), handling on site, spanning capabilities and general robustness of profile.

1.00 mm Nominal Thickness is manufactured as a light weight PC sheet to be used mainly in those applications where exposure to wind is less, spanning requirements are less than normal, and generally lighter domestic-type applications.

The 1.00 mm nominal thickness products are restricted to certain profiles only. Refer to the profile list for details.

LIGHT AND SOLAR ENERGY TRANSMISSION

Different applications using translucent MODEK PC sheeting call for varying levels of light transmission. With different colours these levels change.

Not only does the natural (or visible) light level vary, but the amount of solar energy (heat) also varies.

Polycarbonate is a thermoplastic with a high degree of clarity. Therefore the direct transmission of solar energy is considerably higher than that of a diffused panel. Consideration for the appropriate colour should therefore be carefully weighed up.

The diagram below depicts the approximate transmission of the various wavelengths of the light spectrum for a clear PC sheet.

More than 70 % of the heating effect of the sun is carried between 350 and 800 nanometres (generally, the visible light spectrum) and we can see that these wavelengths are generously transmitted through a clear MODEK PC sheet – more than 85 %.

Why does heat build up in a room?

As illustrated, a high percentage of the visible short wave radiation has been transmitted through a MODEK PC clear sheet.

This radiation is absorbed by surfaces inside the room, and these surfaces become heat radiators. The heat emitted from these “radiators” is long wave radiation which is not so readily transmitted out of the room through the MODEK sheet. The result is that the trapped heat builds up in the room. This is also known as the “greenhouse effect”.

An effective method of combating heat build-up in a room is to have good through ventilation. This can also be improved by selecting the most appropriate MODEK PC roof sheet.

The table below shows the various percentages of transmitted light and solar energy, and also that amount of light and solar energy which is reflected and absorbed by the different coloured MODEK PC sheets.

ColorQUEST Colorimeter Test Results
MODEK PC Translucent Roof Sheets

MODEK
PC ROOF SHEET TINT

 

CLEAR

 

BLUE

 

GREEN

 

OPAL
50

 

BRONZE

 

OPAL
10

 

 
VISIBLE SPECTRUM (380 nm – 700 nm)

 

% Light
Transmission

 

90

 

65

 

40

 

50

 

40

 

25

 

% Light
Reflectance

 

13

 

10

 

10

 

42

 

8

 

74

 

 
SOLAR
ENERGY (350 nm – 2100 nm)

 

%
Rejected

 

13

 

26

 

41

 

41

 

40

 

67

 

% Direct
Transmission

 

87

 

68

 

47

 

57

 

47

 

31

 

% Direct
Reflectance

 

11

 

8

 

8

 

34

 

7

 

63

 

%
Absorption

 

3

 

24

 

44

 

9

 

46

 

7

 

% Total
Transmission

 

88

 

74

 

59

 

59

 

60

 

33

 

 
SHADING COEFFICIENT

 

1.00

 

0.86

 

0.68

 

0.68

 

0.69

 

0.37

 

Notes:

  • Shading coefficients are used for comparing solar heat transmission properties of different glazing materials to that of clear float glass 3 mm to 4 mm thick, the glass being given a value of 1. To be used for comparative purposes only.
  • For practical purposes, MODEK PC sheets do not transmit harmful UV rays.

Should there be any further requirements regarding the light and solar energy transmission of MODEK PC roof sheets, contact MODEK’S Technical Department.

MODEK HEAT STOP

MODEK Heat Stop is an innovative development in polycarbonate translucent roof sheeting. This product effectively eliminates 60% of the radiated heat of the sun, resulting in a cool shaded environment.

MODEK Heat Stop is a polycarbonate profiled extrusion, manufactured in South Africa, which has a co-extruded layer of UV stabilised surface protection on the weather side. Microscopic reflective particles are incorporated in the core material which create the silver colour and the reflective qualities of the product.

If an application for a translucent roof sheet or skylight requires a minimum heat build-up under the natural light panel – MODEK offers a polycarbonate solution. It should be remembered, however, that a lower level of light transmission is achieved with MODEK Heat Stop. The appropriate surface area of translucent roof sheets must therefore be used to achieve the required interior light levels.

MODEK Heat Stop offers the following properties:

  • All the excellent physical properties of polycarbonate.
  • UV surface protection on weather side.
  • Exciting new colour – silver.
  • 20 % light transmission.
  • It is available in 1 mm and 1.25 mm profiles:
    IBR
    Corrugated
    Nurib
    Grecca
  • Price – the same as the normal tint price.

ColorQUEST Colorimeter Test results

MODEK
PC SHEET

 

MODEK
Heat Stop

 

 
VISIBLE SPECTRUM (380 nm – 700 nm)

 

% Light
Transmission

 

22

 

% Light
Reflectance

 

32

 

 
SOLAR
ENERGY (350 nm – 2100 nm)

 

%
Rejected

 

60

 

% Direct
Transmission

 

27

 

% Direct
Reflectance

 

27

 

%
Absorption

 

46

 

% Total
Transmission

 

40

 

 
SHADING COEFFICIENT

 

0.46

 

Notes:

  • Shading coefficients are used for comparing solar heat transmission properties of different glazing materials to that of clear float glass 3 mm to 4 mm thick, the glass being given a value of 1. To be used for comparative purposes only.
  • For practical purposes MODEK Heat Stop does not transmit harmful UV rays.

WEATHERABILITY

MODEK PC roof sheeting is manufactured using modern co-extrusion technology to create a highly UV stabilised weathering surface on the sheet.

This UV layer will not crack or delaminate, and ensures years of trouble-free performance in the harsh South African weather conditions.

As with almost all plastics, UV attack from the sun will, over a period of time, adversely affect MODEK PC roof sheets. This process is called photodegradation.

What occurs during this process is the following:

The aggressive short wavelength UV rays are absorbed into the polymer. They “excite” the chemical molecular bonds, causing them to separate, resulting in a slight yellowing and a reduction of physical properties such as tensile strength and impact resistance.

This process is significantly reduced in the MODEK PC sheet because of the excellent protection offered by the UV co-extruded layer which incorporates UV stabilisers and UV absorbers. Over a prolonged period, a slight yellowing or hazing will be detected in a MODEK PC sheet.

With outside exposure in normal conditions in South Africa, it is expected that a clear MODEK PC sheet with UV protection will not increase in yellowness more than 9 yellowness index units within ten years from date of sale.

The determination of the yellowing index will be made on samples subjected to pre-test cleaning and conditioning according to MODEK’s test procedures, and the yellowness index shall be determined according to ASTM D-1925-70 as measured with Hunter Colour-Quest colour Spectrophotometer.

A MODEK PC sheet will retain virtually all its physical properties, and remain structurally sound over this period of time, under normal conditions.

CORROSION AND CHEMICAL RESISTANCE

MODEK PC sheets will resist chemical attack and corrosion in most industrial and marine environments.

Tests have found the following:

  • MODEK PC is highly resistant to corrosion and high concentrations of mineral acids, many organic acids, oxidising and reducing agents, neutral and acid salt solutions, many oils and fats, saturated aliphatic and cyclo-aliphatic hydrocarbons and alcohols.
  • MODEK PC is not resistant to strong acids and alkalis, methyl alcohol, aromatic hydrocarbons and chlorinated hydrocarbons nor to lengthy immersion in hot water.
  • MODEK PC must not be used in conjunction with plasticised PVC. This will result in stress corrosion cracking and cause damage to the MODEK PC sheet.
  • MODEK PC sheets are ideal for coastal applications.

The resistance to chemical attack varies with a wide range of chemicals, detergents, polishes and cleaning agents. This resistance chart refers to certain chemicals and the reaction of PC under certain conditions. Please refer to MODEK’S Technical Department should you have a query.

Flashing

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL INFORMATION

Accessories are produced on sophisticated hydraulic press brake facilities to a high degree of accuracy. The products illustrated are an indication of a wide range of standard accessories available from CSI. The production process allows for a lot of flexibility so our technical staff should be contacted should you have special requirements.

MATERIAL OPTIONS

Accessories can be ordered in galvanised sheet and Colour Coated Chromadek. Galvanised thickness ranges from from 0,4mm to 1,60mm. Chromadek is normally supplied with a silicone polyester paint system on the outside and a standard Dove Grey backing on the reverse side of the sheets.

SIZES

Accessories can be ordered in standard lengths of 3,0m and special lengths up to 6 metres.

TOLERANCES

Typical dimensional tolerances are ±2,0mm

Flashing Types Available

Colour Range

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments
Aloe Green Azure Blue Jasper
Aloe Green Azure Blue Jasper
Buffalo Brown Charcoal Grey Heritage Red
Buffalo Brown Charcoal Grey Heritage Red
Dark Dolphin Dove Grey Colonial Green
Dark Dolphin Dove Grey Colonial Green
Fish Eagle White Gemsbok Sand African Blue
Fish Eagle White Gemsbok Sand African Blue
Kalahari Red Kingfisher Blue African White
Kalahari Red Kingfisher Blue African White
Sandstone Beige Traffic Green Off White
Sandstone Beige Traffic Green Off White
Shale Grey Armour Grey Volcanic Grey
Shale Grey Armour Grey African Cream
Cape Charcoal Dune Amazing White
Cape Charcoal Dune Amazing White
Ore Grey African Charcoal Garden Route Green
Ore Grey African Charcoal Garden Route Green
Cape White Almond Beige Loft
Cape White Almond Beige Loft
Bushland Pale Eucalypt Deep Ocean
Bushland Pale Eucalypt Deep Ocean
Sahara Sands
Sahara Sands

Bullnosing

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

CRANKING OF PROFILED SHEETING

Cranking of a profiled sheet incorporates lateral rib indentations pressed in at uniform distances which vary according to the radius requirements.

Cranked sheets can be supplied in standard radii as follows:

Profile

Std.
Radius (inside curve)


760
300mm 400mm 450mm 500mm

686 (IBR)

300mm 400mm 450mm 500mm

610/762
300mm 400mm 450mm 500mm

700
      500mm

STANDARD CRANK (686 & 760)

Normally with the narrow flute uppermost and the bend away from the angular inclination.

REVERSE CRANK (686 & 760)

Normally with the narrow flute downwards and the bend into the narrow flute. Cranks can be at the end/ends of a sheet or at any position along the length.

Note: All profiles can be cranked in Full Hard and commercial quality material but only to a minimum radius of 300mm.

889 – Industrial Seven

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL INFORMATION

889 Industrial Seven is an angular trapezoidal fluted profile sheet used preferably for aluminium, BHP Zincalume® and Colorbond® steel, but on request is also available in galvanised and chromadek with virtually the same characteristics as IBR but having an effective cover of 889mm.

  • The general shape and appearance of the trapezoidal flutes ensure that 889 Industrial Seven is totally acceptable for use as roof and wall cladding. The deep and broad flutes of the 889 Industrial Seven type sheeting ensures excellent drainage characteristics, whch makes it an ideal sheet for roofing applications.
  • 889 Industrial Seven offers optimum strength to weight and is designed to provide the most advantageous load/span characteristics consistent with economy.
  • 889 Industrial Seven offer the end user the option of having strengthening ribs in the sheet which help to remove oil canning from the broad flute.
  • 889 Industrial Seven can be factory cranked, curved and bullnosed to a wide range of radii (see Bullnosing). For further details contact our Technical Department.

MATERIAL OPTIONS

Materials Thickness
(mm)
Aluminium 0,7  0,8
  0,9  1,0  1,2
BHP Colorbond® Steel 0,47  0,53
BHP Zincalume® Steel 0,47  0,5

Note: If galvanised or chromadek material is specified please contact our technical department for technical data

LENGTHS & ROOF PITCH

889 can be ordered in any length up to 18 metres as per the customers requirements. The maximum length for road transportation is 13,2 metres and lengths over 13,2 metres require special transport arrangements. The minimum roof pitch when using 889 is 5° provided the roof slope is less than 30 metres. For roof slopes over 30 metres a minimum roof pitch of 7,5° is recommended.

TOLERANCES

Length variation of ±5,0mm and width tolerances of ±3,0 mm is permissible.

PURLIN SPACINGS*

Purlin Spacings are dependant on both downward loading and negative suction loading caused by wind. Your engineer should be consulted to calculate your load (kn/m²) for your particular application. A broad guideline for Purlin Spacings is shown in the table below.

    Double Span Single Span Cantilever Wall
Aluminium mm metre metre metre metre
  0,7 - - - 2,75
  0,8 2,100 1,650 0,550 3,000
  0,9 2,250 1,760 0,600 3,150
  1,0 2,450 1,930 0,650 3,430
  1,2 2,600 2,150 0,750 3,640
Colorbond/Zincalume           
  0,47 2,450 1,900 0,500 3,750
  0,53 2,650 1,950 0,700 3,900
   MASS / METRE LINEAR METRE / TON
Thickness 0,47 0,53 0,7 0,8 0,9 1,0 1,2 0,47 0,53 0,7 0,8 0,9 1,0 1,2
889 4,603 5,19 2,300 2,630 2,960 3,288 3,945 217 192 434 380 337 304 253

889 COVERAGE TABLE
(Full width 737mm / Covering with 686mm)

Sheets 889mm Sheets 889mm Sheets 889mm Sheets 889mm Sheets 889mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
889
1778
2667
3556
4445
5334
6223
7112
8001
8890
9779
10668
11557
12446
13335
14224
15113
16002
16891
17780
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
18669
19558
20447
21336
22225
23114
24003
24892
25781
26670
27559
28448
29337
30226
31115
32004
32893
33782
34671
35560
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
36449
37338
38227
39116
40005
40894
41783
42672
43561
44450
45339
46228
47117
48006
48895
49784
50673
51562
52451
53340
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
54229
55118
56007
56896
57785
58674
59563
60452
61341
62230
63119
64008
64897
65786
66675
67564
68453
69342
70231
71120
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
72009
72898
73787
74676
75565
76454
77343
78232
79121
80010
80899
81788
82677
83566
84455
85344
86233
87122
88011
88900

760 – Widek or Widespan

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL INFORMATION

760 – Widek is also an angular trapezoidal fluted sheet and is similar in appearance to IBR profiled sheeting, the difference being the cover width of the sheet, and the depth of the flutes. IBR sheeting has a cover width of 686mm whereas 760 has a cover width of 760mm. The depth of the flutes on IBR sheeting are normally 36,5mm and the depth of 760 is 28,5mm. Using this type of sheeting has some cost saving advantages.

  • The 760 profile giving a better cover width means a saving of ±10% on sheeting purchased thus a cost saving.
  • To achieve the same coverage less sheets are required to be erected, thus saving time and labour.
  • The advantage of using 760 in place of the sinusoidal corrugated profile is in its strength, that is to say the spanning capacity of 760 are greater than the corrugated profile thus requiring less purlins resulting in a cost saving.
  • 760 Widek can be factory cranked, curved and bullnosed to a wide range of radii (see Bullnosing).

MATERIAL OPTIONS

Galvanised Steel Thickness (mm)
Z250 (Note 1&2)
0,40 0,50
Z275 (Note 2)
0,50 0,60 0,80
Z600  
Colour Coated (Note 3)
Aluminium & Stainless Steel (Note 4)
0,60 0,80
0,50 0,60 0,80
   

Note 1 -

762 corrugated, IBR 686 and Widek 760 are supplied in a Z200 spelter
Note 2

Full Hard can be ordered in a Z275 and Z250 spelter. We offer 0,6mm and 0,8mm material in commercial quality, and 0,4mm and 0,6mm in Full Hard.
Note 3

Available in Mittal’s standard chromadek colour coated range. Special colours are available on request. Please contact our sales staff for further details.
Note 4

We profile certain grades of aluminium and stainless steel. Please contact our sales staff if you require further details.

LENGTHS & ROOF PITCH

760 can be ordered in any length up to 18 metres as per the customers requirements. The maximum length for road transportation is 13.2 metres and lengths over 13.2 metres require special transport arrangements. The minimum roof pitch when using 760 is 7,5°.

TOLERANCES

Length variation of 5,0mm and width tolerance of 3,0mm is permissible.

PURLIN SPACINGS

Purlin Spacings are dependant on both downward loading and negative suction loading caused by wind. Your engineer should be consulted to calculate your load (kn/m²) for your particular application. A broad guideline for Purlin Spacings is shown in the table below.

GAUGE MAXIMUM PURLIN MAXIMUM GIRT
   Spacing for Roof Covering Spacing for Vertical
Covering
  Double Span Single Span Cantilever Cladding Cantilever
mm metre metre metre metre metre
0,50 (Full Hard) 1,60 1,35 0,33 2,0 0,52
0,60 1,70 1,50 0,36 2,3 0,56
0,80 2,15 1,80 0,42 2,7 0,63

Double Span refers to a length of sheet being continuously supported over 3 or more purlins.

   MASS / METRE LINEAR METRE / TON
Thickness 0,4 0,5 0,6 0,8 0,4 0,5 0,6 0,8
760 2,976 3,717 4,464 5,952 336 269 224 168

760 COVERAGE TABLE
(Full width 737mm / Covering with 686mm)

Sheets 760mm Sheets 760mm Sheets 760mm Sheets 760mm Sheets 760mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
760
1520
2280
3040
3800
4560
5320
6080
6840
7600
8360
9120
9880
10640
11400
12160
12920
13680
14440
15200
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
15690
16720
17480
18240
19000
19760
20520
21280
22040
22800
23560
24320
25080
25840
26600
27360
28120
28880
29640
30400
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
31160
31920
32680
33440
34200
34960
35720
36480
37240
38000
38760
39520
40280
41040
41800
42560
43320
44080
44840
45600
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
46360
47120
47880
48640
49400
50160
50920
51680
52440
53200
53960
54720
55480
56240
57000
57760
58520
59280
60040
60800
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
61560
62320
63080
63840
64600
65360
66120
66880
67640
68400
69160
69920
70680
71440
72200
72960
73720
74480
75240
76000

700 – Sheeting

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL INFORMATION

700 – concealed fix is an angular interlocking standing seam trapezoidal rib profile roll formed currently on static mills in our Johannesburg and Cape Town operations. 700 has a nett cover width of 700 mm. The depths of the flutes are 41.5 mm and include capillary breaks. Along the edge of the male rib, spurs at 300 mm centres ensure positive interlocking of side laps. Two stiffening ribs are incorporated in each pan.

MATERIAL OPTIONS

Materials Thickness (mm)
Galv ISQ300 Z275 -   0,58
Galv ISQ550 F/Hand 0,50  
Chromadek 0,50  0,58
BHP G550 Zincalume ® 0,47  0,53
BHP G550 Colorbond ® 0,47  0,53

PURLIN SPACING

Purlin spacings are dependent on both downward loading and negative suction loading caused by the wind. Your engineer should be consulted to calculate your load (kn/m2) for your particular application. A broad guideline for purlin spacings is shown in the table below. Double span refers to a length of sheet being continuously supported over 3 or more purlins.

CLIPPING SYSTEM & FASTENER

This clipping profile is fastened to the purlin by means of a sheet clip. Sheets are locked onto the clips and therefore not perforated. Spurs at 300 mm centres on male rib ensure positive interlocking of side laps.

CRANKING

700 sheets may be cranked and bullnosed but not reverse bullnosed. Minimum radius is 450mm. Minimum radises for springing or draping is 36 metres.

LENGTHS AND ROOF PITCH

700 can be ordered in any length up to 27 metres as per customer requirements. The maximum length for road transportation is 13,2 metres. Special transportation arrangements to be discussed and arranged for the longer lengths. The minimum roof pitch when using 700 is 2 degrees.

  1,47 mm 0,50 mm 0,53 mm 0,58 mm
Single Span 1400 1400 1800 1800
End Span 1700 1700 2100 2100
Internal Span 2000 2000 2500 2500
Cantilever 180 180 260 260
Cantilever, gutter attached 400 400 600 600
Side Cladding         
Single Span 2100 2100 2300 2300
End Span 2500 2500 2600 2600
Internal Span 2700 2700 2700 2700
Cantilever 300 300 500 500
Approximate Mass kg/m2 4.579g 5.194 5.290 6.157
 
   THEORETICAL MASS / METRE
Thickness 0,47 0,50 0,53 0,60
700 kg/mtr 3,205 3,636 3,703 4,310

700 COVERAGE TABLE
(Full width 728mm / Covering width 700mm)

Sheets mm Sheets mm Sheets mm Sheets mm Sheets mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
700
1400
2100
2800
3500
4200
4900
5600
6300
7000
7700
8400
9100
9800
10500
11200
11900
12600
13300
14000
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
14700
15400
16200
16800
17500
18200
18900
19600
20300
21000
21700
22400
23100
23800
24500
25200
25900
26600
27300
28000
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
28700
29400
30100
30800
31500
32200
32900
33600
34300
35000
35700
36400
37100
37800
38500
39200
39900
40600
41300
42000
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
42700
43400
44100
44800
45500
46200
46900
47600
48300
49000
49700
50400
51100
51800
52500
53200
53900
54600
55300
56000
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
56700
57400
58100
58800
59500
60200
60900
61600
62300
63000
63700
64400
65100
65800
66500
67200
67900
68600
69300
70000

686 – IBR Profile

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL INFORMATION

686 “IBR” is an angular trapezoidal fluted profile sheet. Its bold appearance makes it both attractive and practical. Since IBR was introduced to the South African market in 1958, it has become the most popular sheeting used in the construction of commercial and industrial buildings. IBR is an abbreviation for Inverted Box Rib. The number “686″ signifies the sheets’ effective cover width.

  • The general shape and appearance of the trapezoidal flutes ensure that 686 “IBR” is totally acceptable for use as roof and wall cladding. The deep and broad flutes of the 686 “IBR” Type sheeting ensures excellent drainage characteristics, another characteristic that makes it an ideal sheet for roofing applications.
  • 686 “IBR” offers optimum strength to weight and is designed to provide the most advantageous load/span characteristics consistent with economy.
  • 686 “IBR” offer the end user the option of having strengthening ribs in the sheet which help to remove oil canning from the broad flute.
  • 686 “IBR” can be factory cranked, curved and bullnosed to a wide range of radii (see Bullnosing). For further details contact our Technical Department.

MATERIAL OPTIONS

Galvanised Steel Thickness (mm)
Z250 (Note 1&2) 0,40 0,50
Z275 (Note 2) 0,50 0,60 0,80
Z600

Colour Coated (Note 3)

Aluminium & Stainless Steel (Note 4)

0,60 0,80

0,50 0,60 0,80

Note 1 -762 corrugated, IBR 686 and Widedek 760 are supplied in a Z200 spelter
Note 2 -Full Hard can be ordered in a Z275 and Z250 spelter. We offer 0,6mm and 0,8mm material in commercial quality, and 0,4mm and 0,6mm in Full Hard.
Note 3 -Available in Mittal’s standard chromadek colour coated range. Special colours are available on request. Please contact our sales staff for further details.
Note 4 -We profile certain grades of aluminium and stainless steel. Please contact our sales staff if you require further details.

686 can be ordered in any length up to 18 metres as per the customer’s requirements. The maximum length for road transportation is 13,2 metres and lengths over 13,2 metres require special transport arrangements. The minimum roof pitch when using 686 is 5° provided the roof slope is less than 30 metres. For roof slopes over 30 metres a minimum roof pitch of 7,5° is recommended.

TOLERANCES

A length variation range of ±5,0mm, and width tolerances of ±3,0 mm is permissible.

PURLIN SPACINGS

Purlin Spacings are dependent on both downward loading and negative suction loading caused by wind. Your engineer should be consulted to calculate your load (kn/m²) for your particular application. A broad guideline for Purlin Spacings is shown in the table below.

GAUGE MAXIMUM PURLIN MAXIMUM GIRT
Spacing for Roof Covering Spacing for Vertical Covering
Double Span Single Span Cantilever Cladding Cantilever
mm metre metre metre metre metre
0,50 (Full Hard) 2,00 1,70 0,45 2,80 1,00
0,60 2,15 1,85 0,45 3,15 1,00
0,80 2,65 2,30 0,55 3,50 1,15

Double Span refers to a length of sheet being continuously supported over 3 or more purlins.

MASS / METRE LINEAR METRE / TON
Thickness 0,4 0,5 0,6 0,8 0,4 0,5 0,6 0,8
686 2,976 3,717 4,464 5,952 336 269 224 168

 

Sheets 686mm Sheets 686mm Sheets 686mm Sheets 686mm Sheets 686mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
686
1372
2058
2744
3430
4116
4802
5488
6174
6860
7546
8232
8918
9604
10290
10976
11662
12348
13034
13720
 
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
14406
15092
15778
16464
17150
17836
18522
19208
19894
20580
21266
21952
22638
23324
24010
24696
25382
26068
26754
27440
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
28126
28812
29498
30184
30870
31556
32242
32928
33614
34300
34986
35672
36358
37044
37730
38416
39102
39788
40474
41160
 
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
41846
42532
43218
43904
44590
45276
45962
46648
47334
48020
48706
49392
50078
50764
51450
52136
52822
53508
54194
54880
 
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
55566
56252
56938
57624
58310
58996
59682
60368
61054
61740
62426
63112
63798
64484
65170
65845
66542
67228
67914
68600

610 / 762 Corrugated Profile

Jun 5, 2012   //   by admin   //   Products & Profiles, Sheeting  //  No Comments

GENERAL INFORMATION

610/762 Corrugated Profile. Both are sinusoidal profile sheets and can be used as roofing and cladding material. With its origins dating back to the Victorian era, it’s probably the most commonly known sheeting profile used in the world today.

  • There are two sizes of corrugated sheeting on the market, 8½ Corrugated and 10½ Corrugated. The numbers 8½ and 10½ refer to the number of corrugations across the width of the profiled sheet.
  • The two types of corrugated sheeting have different cover widths. 610 has a cover width of 610mm and 762 has a cover width of 762mm.
  • The fact that the corrugated profiled sheeting has been around since before the turn of the century proves that this easy to use and effective method of roofing and wall cladding is here to stay.
  • Corrugated 610/762 can be factory cranked to a curve and bullnosed to a wide range of radii (see Bullnosing).

MATERIAL OPTIONS

Galvanised Steel Thickness (mm)
Z250 (Note 1&2) 0,40 0,50
Z275 (Note 2) 0,50 0,60 0,80
Z600
Colour Coated (Note 3)
Aluminium & Stainless Steel (Note 4)
0,60 0,80
0,50 0,60 0,80

Note 1 – 762 corrugated, IBR 686 and Widedek 760 is supplied in a Z200 spelter
Note 2 – Full Hard can be ordered in a Z275 and Z250 spelter. We offer 0,6mm and 0,8mm material in commercial quality, and 0,4mm and 0,6mm in Full Hard.
Note 3 - Available in Mittal’s standard chromadek colour coated range. Special colours are available on request. Please contact our sales staff for further details.
Note 4 - We profile certain grades of aluminium and stainless steel. Please contact our sales staff if you require further details.

LENGTHS & ROOF PITCH

Corrugated sheeting can be ordered in any length up to 18 metres with the proviso that lengths over 13,2 metres require special transport arrangements. Corrugated sheeting is not suitable for roof pitches below 15º. If roof slopes longer than 15 metres are not recommended.

TOLERANCES

Length, width and edge wave tolerance of ±5,0 mm is permissible.

PURLIN SPACINGS

Purlin Spacings are dependent on both downward loading and negative suction loading caused by wind. Your engineer should be consulted to calculate your load (kn/m²) for your particular application. A broad guideline for Purlin Spacings is shown in the table below.

GAUGE MAXIMUM PURLIN MAXIMUM GIRT
   Spacing for Roof Covering Spacing for Vertical Covering
  Double Span Single Span Cantilever Cladding Cantilever
mm metre metre metre metre metre
0,50 (Full Hard) 1,2 0,9 0,30 1,3 0,85
0,60 1,2 0,9 0,30 1,5 0,85
0,80 1,5 1,2 0,45 1,8 1,00

Double Span refers to a length of corrugated sheet being continuously supported over 3 or more purlins.

   MASS / METRE LINEAR METRE / TON
Thickness 0,4 0,5 0,6 0,8 0,4 0,5 0,6 0,8
762 2,976 3,717 4,464 5,952 336 269 224 168
610 2,494 3,115 3,731 4,975 401 321 268 201

Covering width will change if double side lap is used as opposed to a single side lap. 762 covering width will reduce to 686mm and 610 covering width will reduce to 535mm.

COVERAGE TABLE FOR SINGLE LAPS

(762 Full width 838mm / Covering width 762mm)
(610 Full width 710mm / Covering width 610mm)

Sheets 10.5/762
(mm)
8.5/610
(mm)
Sheets 10.5/762
(mm)
8.5/610
(mm)
Sheets 10.5/762
(mm)
8.5/610
(mm)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
762
1524
2286
3048
3810
4572
5334
6096
6858
7620
8382
9144
9906
10668
11430
12192
12954
13716
14478
15240
610
1120
1830
2440
3050
3660
4270
4880
5490
6100
6710
7320
7930
8540
9150
9760
10370
10980
11590
12200
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
16002
16764
17526
18288
19050
19812
20574
21336
22098
22860
23622
24384
25146
25908
26670
27432
28194
28956
29718
30480
12810
13420
14030
14640
15250
15860
16470
17080
17690
18300
18910
19520
20130
20740
21350
21960
22570
23180
23790
24400
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
31242
32004
32766
33528
34290
35052
35814
36576
37338
38100
38862
39624
40386
41148
41910
42672
43434
44196
44958
45720
25010
25620
26230
26840
27450
28060
28670
29280
29890
30500
31110
31720
32330
32940
33550
34160
34770
35380
35990
36600