ISO 9001 : 2008 Certified Company


STRUCTURE AND SUPPORTS

SUPPORT OF COLUMN

Column Components | Couplings | Glass Joint | Heat Exchangers | Measurement & Control | Pipeline Components | Rotary Film Evaporator | Sight Glasses | Stirrers | Structure & Supports | Typical Units | Valves | Vessels

Glass plant and pipeline should be supported correctly. To prevent inducing undesirable stresses stresses in the glass, support should be rigid. When supported, glass should be in compression.

Generally glass plant and equipment are supported in a rectangular tubular structure. This structure is formed of galvanized mild steel tubing with the cast iron fittings, which are described in this catalogue. This type of structure provides enough flexibility for future modifications and is strong enough to support a glass unit.

Following rules should be followed while supporting a glass unit in a tubular structure.

  • The structure be rigid. To give lateral support it must be braced back to the nearest wall or any rigid feature.
  • All glass columns are build up from a fixed point on which whole weight of the column should be taken. If total loads exceeds the permissible limits, counter balance supports should be used to relieve excessive weight.
  • With change in temperature, glass column and tubular structure expands at different rate. Therefore glass unit must be free for vertical movement above the fixed point. Hence above the fixed point guide supports should be used to give lateral support.


STRUCTURE TUBES, GALVANISED

For forming the structure "B" class galvanised tubes are used in size of ",1", 1", 1", and 2. Cut tubes are available in required length to form a standard size structure. Cut tubes are provided with rubber plug at both the ends.



Tubes size


NB Inches NB mm External Diameter
½”
15
19.5
1” 25 32.5
1¼” 30 41.5
1½” 40 48.3
2” 50 60.3

Available cut lengths


Structure Dimension
NB (mm)
15*
25*
30*
40*
50*

For Vertical installation


2500
-
2500
-
-
-
3000
-
3000
3000
-
-
3500
-
3500
3500
-
-
4000
-
-
4000
-
-
6000
-
6000
6000
6000
6000

For Frames


400
-
365
355
345
335
500
-
465
455
445
435
600
-
565
555
545
535
800
-
765
755
745
735
1000
-
965
955
945
935
1200
-
1165
1155
1145
1135
1500
-
1465
1455
1445
1435

For Supports


400
435
435
445
455
465
500
535
535
545
555
565
600
635
635
645
655
665
800
835
835
845
855
865
1000
1035
1035
1045
1055
1065
1200
1235
1235
1245
1255
1265
1500
1535
1535
1545
1555
1565

Cat. Ref.                  TBG (NBmm/Cut length)
for e.g.                     TBG 25/365.

STRUCTURE FITTINGS

Following structure fittings are available to use with galvanised tubes in order to form a tubular structure for a glass plant. These fittings are made of cast iron and are suitable to the galvanized tubes described earlier.

These sliding fittings are provided with grub screws to fix it at required position on a galvanised tube.

These fittings are specially made to construct a tubular structure, which provides enough flexibility for future modifications without involving hammering and welding.

STRUCTURE FITTINGS GENERAL DATA

NB
TUBE DIA
ID
OD
d
25
32.5
35
45
1/2"
30
42.5
45
55
1/2"
40
48.3
51
61
1/2"
50
60.3
63
73
1/2"

 

STRUCTURE FITTINGS BASE

These are to be used with vertical tubes. Holes are provided for foundation.

Cat.Ref.
NB
D
H
PCD
do
BS25*
25
150
75
110
4 x 14ø
BS30
30
150
75
110
4 x 14ø
BS40
40
150
75
110
4 x 14ø
BS50
50
175
75
125
4 x 14ø

 

 

STRUCTURE FITTINGS COUPLER

These are generally used to couple vertical tubes where more length require

Cat.Ref.
NB
H
H1
CL25
25
1650
200
CL30
30
150
200
CL40
40
150
200
CL50
50
150
200

 

 

STRUCTURE FITTINGS BEND

These are used to build frames on vertical on vertical tubes.

Cat.Ref.
NB
H
L
BN25*
25
50
55
BN30*
30
65
70
BN40
40
70
80
BN50
50
85
95

 

 

STRUCTURE FITTINGS TEE

Cat.Ref.
NB
H
L
T25*
25
50
55
T30*
30
65
70
T40
40
70
80
T50
50
85
95

 

 

STRUCTURE FITTINGS DOUBLE BEND


Cat.Ref.
NB
H
L
DBN25
25
50
55
DBN30
30
65
70
DBN40
40
70
80
DBN50
52
85
95

 

 

STRUCTURE FITTINGS DOUBLE TEE

Cat.Ref.
NB
H
L
DT25
25
50
55
DT30
30
65
70
DT40
40
70
80
DT50
50
85
95

 

STRUCTURE FITTINGS EQUAL BRACKET

Cat.Ref.
NB
H
L
L1
EBT25*
25
40
65
50
EBT30*
30
52
75
60
EBT40
40
62
85
60
EBT50
50
72
95
60

 

 

STRUCTURE FITTINGS UNEQUAL BRACKET

Cat.Ref.
NB
Nb1
H
L
L1
UBT25/15*
25
15
35
65
50
UBT30/15*
30
15
40
75
60
UBT40/25
40
25
50
85
60
UBT50/25
50
25
55
95
60

 

 

STRUCTURE FITTINGS CROSS

Cat.Ref.
NB
H
L
x 25
25
50
45
x 30
30
65
55
x 40
40
65
70
x 50
50
65
85

 

 

STRUCTURE FITTINGS SUPPORT

Cat.Ref.
NB
H
L
D
SPT15*
15
40
35
13
SPT25*
25
55
50
13
SPT30*
30
55
57
13
SPT40
40
55
62
13
SPT50
50
55
67
13

 

 

STRUCTURE FITTINGS PLUGS

These are used to plug the open ends of galvanised tubes.

Cat.Ref.
NB
PLUG15
15
PLUG25
25
PLUG30
30
PLUG40
40
PLUG50
50

 

 

STRUCTURE FITTINGS STUDS

These are used as screwed rods with supports

Cat.Ref.
d
L
STUD5/16-150
5/16"
150
STUD3/8-150
3/8"
150
STUD1/2-200
1/2"
200

 

STRUCTURE DIMENSIONS FOR COLUMNS

DN
Recommended tube size NB (mm)
Minimum Structure size Depth x Width
80
25
500 x 500
100
25
500 x 500
150
25,30
600 x 600
225
30
800 x 800
300
30
800 x 800
400
30
1000 x 1000
450
30,40
1000 x 1000
600
40,50
1200 x 1200

 

FOR VESSELS (IN HEATING MANTLES)

Size (Litres)
Recommended tube size NB 9(mm)
Minimum Structure size Depth x Width
20
25
400 x 600
50
25
600 x 800
100
25,30
800 x 800
200
30
800 x 1000

 

FOR VESSELS (IN HEATING BATHS)

Size (Litres)
Recommended tube size NB (mm)
Minimum Structure size Depth x Width
20
25
500 x 600
50
25
600 x 800
100
25,30
800 x 1000
200
30
800 x 1200

 

FOR VESSELS (IN VESSEL HOLDERS)

Size (Litres)
Recommended tube size NB (mm)
Minimum Structure size Depth x Width
20
25
500 x 600
50
25
600 x 800
100
25,30
1000 x 1000
200
30
1000 x 1000

 

COLUMN BASE SUPPORT FRAMES

These channel frames are used as fixed support in erection of column. These are supplied with full threaded jacking rods and U bolts.

Cat.Ref.
PCD
L1
L
H
FCSH225
310
1000
800
75
FCSH300
395
1000
800
75
FCSH400
495
1200
1000
75
FCSH450
585
1200
1000
100
FCSH600
710
1400
1200
100

 

COUNTER BALANCE SUPPORTS

When the total weight of the column is more and it can not be supported on fix support at the bottom, excessive weight is relieved by counter balance supports. The maximum force require to support the sealing of coupling are as under.

DN of Column
Permissible weight (kge)
Force require for sealing (kgs)
225
200
25
300
380
35
400
500
55
450
700
70
600
1000
110

 

The counter weight acts through two levers on the lower backing flange. The maxium lever ratio is 1:10. More than one counter balance supports can be used to relieve the excessive load keeping minimum force require to support the sealing of coupling.

Cat.Ref.
PCD
L
LCB225
310
800
LCB300
395
800
LCB400
495
1000
LCB450
585
1000
LCB600
710
1200

 

GROUTING OF BASE

1. The one Cast Iron BASE and four foundation Bolts, each with 2 nuts.

 

GROUTING OF BASE

2. Fit the bolts in BASE so that base is raised upto 150mm from head of bolts.

3. Put this assembly on the floor and prepare a rough surface for proper bonding of grouting.

4. Make a concrete block over the bolt of about 220 x 200mm upto the base of BASE i.e. 150mm high.

5. Prepare separate block for each BASE instead of making one big common block For all BASES.

 

ASSEMBLING OF STRUCTURE

1. Mark the position of required fittings on all the Vertical tubes, slide them in correct sequence and lightly Tighten.

 

2. Assemble one side frame of the structure by adding the cross tubes between two vertical tubes.

3. Assemble other side frame of the structure by adding the cross tubes between other two vertical tubes.

4. Build up the cross tubes one side frame and Tighten lightly.

5. Add the other side frame on it and tighten all the fittings firmly.

6. Hoist the structure and brace it to some existing rigid feature.

7. Grout the foundation bolts and fix the structure bases with that.

8. Adjust bracing to obtain a correct plumb in structure.

9. Adjust the horizontal frames in correct level.

10. Assemble the support tubes at their positions.