STANDARD
PRACTICE
SP-69
1996
Edition
PIPE HANGERS AND SUPPORTS SELECTION AND APPLICATION
Developed and Approved
by the
Manufacturers Standardization Society
of the
Valve and Fittings Industry, Inc.
127 Park Street, N.E.
Vienna, Virginia 22180
(703) 2814613
Originally Approved July 1966
COPYRIGHT Manufacturers Standardization Society of the Valve and Fittings
Licensed by Information Handling Services
MSS
STANDARD PRACTICE
SP-69
A Standard Practice is intended as a basis for common practice by the manufacturer, the user, and the
manufacturer,
general public.The existence of an MSS Standard Practice doesnot in itself preclude the
sale, or use of products\not conformingto the Standard Practice. Mandatory conformance is established
only by reference ina code, specification, salescontract, or public law, as applicable.
FOREWORD
This standard was developedby a cooperative effortof representatives of the pipe hanger manufacturers.
It is based on the best practicecurrent at this timeand on the collective experienceof the industry. There
are two companion standards, MSSSP-58 and MSS SP-89, relating to hanger materials, design,
manufacture, fabrication and installation. In addition, the MSS HangerCommitteehasdeveloped
guidelines for pipe supports contractural relationships and on hanger terminologyas covered in MSS
SP-77 and MSS-90 respectively.
U S . customary units in thisSP are the standard; the metric units are for reference only.
This document has been substantively revised
from the previous 1991 edition. It is suggested
that if the
user is interested in knowing what changes have been made,
that direct pageby pagecomparison should
be made of this document.
Other standards documents referredto herein are identified by the date of issue that was applicable to this
standard at the date of issue of this standard. See Annex A. This standard shall remain silent on the
applicability of those other standards of prior or subsequent dates of issue even though provisions of
concern may not have changed.
Any part of this standard may be quoted. Credit Eines should read ‘Extractedfrom MSS SP-69, 1996, with
permission of the publisher, theManufacturers Standardization Society.’ Reproduction prohibited under
copyright convention unless written permission is granted by the ManufacturersStandardization Society of the
Valve and Fittings Industry, Inc.
Copyright @,
1983 by
Manufacturers Standardization Society
of the
Valve and Fittings Industry, Inc.
Printed in U.S.A.
1
COPYRIGHT Manufacturers Standardization Society of the Valve and Fittings
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MSS
STANDARD PRACTICE
~
SP-69
~
CONTENTS
SECTION
PAGE
1. SCOPE ..............................................................................
1
2. OBJECTIVE .........................................................................
1
3. CLASSIFICATION OF PIPING SYSTEMS ..............................................
1
4. GENERALREQUIREMENTS
......................................................... 1
MATERIAL
REQUIREMENTS
........................................................ 2
5.
6. DIMENSIONALREQUIREMENTS ....................................................2
7. SELECTION OF HANGERS AND SUPPORTS FOR PIPE MOVEMENT ................... 2
8. ATTACHMENTS MADE BY WELDING OR BOLTING ..................................
7
9. HANGER AND SUPPORT SPACING
.................................................. 9
.......................................
1o. PIPE ATTACHMENTS FOR INSULATED LINES
11. MULTIPLE SUPPORTS ..............................................................
I2.
I3.
14.
15.
16.
17.
18.
19.
9
10
RISERSUPPORTS ..................................................................10
ANCHORS.GUIDESANDRESTRAINTS
............................................. 11
FIRE PROTECTION SYSTEMS .......................................................11
DUCTILE IRON PIPING ............................................................. 11
C A S T I R O NS O I L P I P I N G
11
GLASSPIPING
..................................................................... 11
PLASTICPIPING
11
FIBERGLASSREINFORCEDPIPE(FRP)
.............................................. 12
TABLE
...........................................................
...................................................................
1.. HANGERANDSUPPORTSELECTIONS
..................................... 3
2.. SPRING SUPPORT SELECTION .............................................7
3. - MAXIMUM HORIZONTAL PIPE HANGER AND SUPPORT SPACING
......... 8
4. - MINIMUM ROD DIAMETER FOR SINGLE RIGID ROD HANGERS ............ 9
5 . - TYPE 40 PROTECTION SHIELDS FOR INSULATED PIPE
ANDTUBING
......................................................... 10
FIGURE 1.-TYPE CHART .............................................................. 5
II
COPYRIGHT Manufacturers Standardization Society of the Valve and Fittings
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MSS SP-69
MSS
76 W 5770640 0500805 827
STANDARD PRACTICE
SP-69
PIPE HANGERS AND SUPPORTS
- SELECTION AND APPLICATION
1.
SCOPE
3.2
Ambient
Systems
B. 60°F (16OC) to 119°F (48°C)
1.1 This standard presents the recommended practice for the selection and application of pipe hangers
and supports for all service temperatures,
3.3
Cold
Systems
C-I. 33°F (1°C) to 59°F (15°C)
C-2. -19°F (-28°C) to 32°F (0°C)
C-3. -39°F (-39°C) to -20°F (-29°C)
C-4. -40°F (-40°C) and below (Cryogenic
Range)
2. OBJECTIVE
2.1 To serve as a pipe hanger and support specification for selection and application, by being referenced
in whole or in part.
4. GENERALREQUIREMENTS
2.2 To serve as a guide to proven industry practice
during engineering design and writing of job specifications covering the hanging, supporting andcontrolling the movement of piping systems.
4.1 Where applicable, selection and application of
pipe hangers and supportsmay be requiredto conform
to Codes and Standards, such as:
2.3 To provide the erector with
information
on
types of hanger and support components to be used
for specific application and installations, wheresuch
information is not otherwise provided.
a) ANSI/ ASME B31 Codes for Pressure Piping
b) ASME Boiler and Pressure Vessel Codes
c) UL 203 Standard for Pipe Hanger Equipment
for Fire Protection Service
d)FactoryMutual
FM1951 ApprovalStandard
for Pipe Hanger Components for Automatic
Sprinkler Systems
e) NFPA 13
f) National and LocalBuildingCodes
g) All Other ApplicableCodes
2.4 To serve as a companion document to MSS
SP-58 which provides recommendations for material,
design and manufacture of standard types of pipe
hanger components.
2.5 To serve asacompaniondocumenttoMSS
SP-89whichprovidesrecommendations
for fabrication and installation of pipe hangers and supports.
4.2
The
selection
of pipe
hangers
and
supports
shall be based upon the overall design concept of the
pipingsystems andany special requirementswhich
may be called for in the specifications. The supporting systems shall provide for, and control, the free or
intended movement of the piping including its movement in relation to that of connected equipment.
3. CLASSIFICATION OF PIPINGSYSTEMS
For the purpose of pipehangerand
support selection,
this document establishes an identification of piping
systems according to the operating (service) temperatures
of the piping contents as follows:
3.1
'
4.3 A careful study shall be made of the piping layout in relation to the surrounding structure and adjacent piping and equipmentbeforeselecting the type
of support to be used at each hanger point.
Hot Systems
A- I. 120" F (49°C) to 450" F (232°C)
A-2. 45 1" F (233OC) to 750°F (399°C)
A-3. Over 750" F (399OC)
4.4 Hangers, supports,anchorsand restraints shall
be
selected
to withstand all static and specified
dynamicconditions of loading to which the piping
and associated equipment may be subjected.
1
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MSS
STANDARD PRACTICE
4.10 Hangersfor the suspension of size 2% and
larger pipe and tubing shall be capable of vertical
hanger component adjustment under load.
4.5 When pipe hanger load and movement calculations are required by the design specification, the
following must be considered:
a)
b)
c)
d)
SP-69
4.1 I Building structure shall be adequatefor supporting pipe hanger loads as generated in 4.5 and 4.6,
including hydrostatic test loads.
Deadweight Loads
HydrostaticLoads
ThermalLoads
Loading Due to Expansion Joint Reaction
Forces
4.12 Installed hangers or hanger components shall
be used only for their purpose. They shall not be used
for rigging and erection purposes.
4.6 When occasional pipe hanger load calculations
are required, they must be clearly defined inthe design
specification. Types of occasional loads are:
5.
a) Safety Valve Thrust Loads
b)Seismic Loads
c) Wind, Snow or Ice Loads
d) Turbine Trip-out Loads
e) WaterHammerLoads
MATERlAL REQUIREMENTS
5.1 The materials of all pipe hanging andsupporting elements shall be in accordance with MSS SP-58.
be
5.2 The material in contact withthepipeshall
compatible withthepiping
material so that neither
shall have a deteriorating action on the other.
4.7 Allowable
stress
levels
listed
in MSS SP-58
shall be used in the design of hanger assemblies with
the following exceptions:
5.3
Materials
subject
to corrosion or electrolysis
shall be protected as specifiedby the engineering
design and such protection shall be applied in accordance with the requirements of MSS SP-58.
a) The load capacities for threaded hanger rods
shall conform to Table 3 of MSS SP-58.
b) A 20% increase in allowablestressmaybe
permitted for short time overloading conditions
during operation.
6. DIMENSIONAL REQUIREMENTS
6.1 Hangers andsupports shall besized to fitthe
outside diameter of pipe, tubing, or, if specified, the
outside diameter of insulation. Manufacturers’ catalog
hangers provide a nominal clearance over standard
tolerance piping and tubing. Considerationfor fit
should be given by the user for large diameter andJ or
out of tolerance piping and tubing.
c) For steels of known physical properties, an
increase to 80%of minimum yield strength, at
roomtemperature,during
hydrostatic testing, is
permissible. For steels of unknown physical properties, an increase to 80%ofyield
strength,as
determined by physical test, is permissible, provided
that the maximum allowable stress does not exceed
16,000 PSI (1 1OMPa).
6.2 Dimensional tolerances shall be in accordance
with Section 4 of MSS SP-89.
d) Loading combinationconsiderations and allowable stress levels to be applied shall be established
by the architect-engineer.
7. SELECTION OF HANGERS AND SUPPORTS
FOR PIPE MOVEMENT
4.8 Hanger
and
support
components
shall be
selected from Table 1within the system classification.
7.1Theselection
of hangers andsupports shall be
made to provide the piping system with the degree of
control that its operating characteristics require.
4.9Whereadditionalstructural
framing members
are required, they shall bedesigned for the specific
loads they are to supportin accordance with the AISC
Specification for theDesign, Fabrication andErection
of Structural Steelfor Buildings. No increase in
allowable stress is permitted for hydrostatic test
periods.
7.2Where negligiblemovement of pipeoccurs at
hanger locations, and no harmfulloading on connecting equipment, piping, or structure would result, rod
hangers may be used for suspended lines. For piping
supported from below,bases, brackets or structural
cross members may be used.
2
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MSS S P - 6 9
96 m 5770640 0500807 b T T
MSS
SP-69
STANDARD PRACTICE
HANGER & SUPPORT SELECTIONS
(For Spring Hangers, See Table
2)
TABLE 1.
To find recommended hangeror support components,
1. Locate the system temperature and insulation condition in the two columns at lefi.
2. Read across the column headings for the type of component tobe used.
3. Numbers in boxes refer to those types shown in Figure 1, which corresponds to figure I of MSS-SP58.
SYSTEM
HORLZONTAL PIPE ATTACHMENTS
TEMP.
RANGE
DEG. F(C)
HOT
A- I
STEELCLIPS MALLEABLE
INSULATION
[RON RINGS
COVERED
NOTE I
STEEL
BANDS
CASTIRON STEEL
CASTIRON
STEEL
HANGING CLAMPS
SUPPORTMG TRAPEZES
ROLLS ROLLS
A
B
C
D
24
W/ 39
NONE
I, 5.7.9. IO
W/ 39 OR 40
2.3
E
WI39OR40
F
G
44.45.46 41.43 59
WI39OR40 W1390R40
SADDLES 6
SHIELDS
STEEL OR STEEL
STEELWELDEI
AlTACHMENT CASTIRON PROTE
STANCHIONS
H
I
39.40
36.37.38
WI39OR40
35
NOTE 3
120 (49)
ID
450 (232)
HOT
A-2
BARE
24.26
6.ll.12
1,5.7,9.10
3.4
COVERED
NOTE I
24
W/ 39
NONE
I
W139 OR 40
3
41.43
44,45,46
59
NONE
36.37.38
41
44,45.46
WI39OR40
59
WI39OR40
39.40
36,37,38
Wl390R40
WI39OR40
35
NOTe 3
NONE NONE NOTE 3
451 (233)
to
750 (399)
HOT
A-3
OVER
750 (399)
AMBIENT
B
1
BARE
NONE
NONE
NONE
3.4
NONE
NONE
COVERED
NOTE I
NONE
NONE
I
W/ 40
ALLOY
2.3
41,43
Wl400R
ALLOY 39
ALLOY 39
BARE
COVERED
NOTE I
NONE NONE
24.26
NONE
59
40
W1400R W1400R
ALLOY39
ALLOY 39
NONE NONE NONE
3
2.3.4
1,5,7,9, IO
W/ 39 OR 40
44,45,46
3.4
W1390R40
44.45.46 41.43 59
WI390R40 W1390R40
39, 40
36.37.38
WI400R
ALLoY39
ALLOY 35
NOTE 3
NONE NONE NOTE
36.37.38
W/ 39 OR 40
35
NOTE 3
60 (16)
to
I 19 (48)
COLD
c-I
BARE
COVERED 26
NOTE 1
24.26
6, 11, 12
1.5.7.9. 10
3.4
41.43
44,45,46
59
NONE
36,37,38
NONE
1.5, 7,9. IO
3,4
W/ 40
41.43
W/ 40
NOTE4
44,45,46
W/ 40
NOTE4
59
W/ 40
40
36,37,38
W/ 40
41.43
44,45,46
NOTE3
W/ 40
NOTE4
NOTES3B4
44.45.46 41.43
W/40
W/ 40
NOTE4
41,43
44,45,46
NOTE3
NONE
36.37.38
41,43
W/40
NOTE4
44.45.46
NOTES2.3,4
W/40
40
36.37.38
W/ 40
NONE
NOTES263
NONE
W/ 40
W/ 40
NOTE 3
33 (1)
10
59(15)
COLD
C-2
-19 (-28)
ta
32 (0)
COLD
C-3 Br C4
BELOW
-19(-28)
BARE
NOTE I
6, 11, I2
1.5.7.9, IO
3.4
NONE COVERED
NONE
1,5,7,9,10
W/ 40
NONE
24,26
BARE
NONE NONE
1.5.7,9,10
NOTE 1
NONE NONE
COVERED
10
1,5.7,9.
NONE
W/ 40
NONE NONE BARE
3.4
NOTES263
3
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W/40
NONE
36,37.38
40
36,37,38
W/40
NOTE 3
NOTE4
NOTES 2& 3
NOTES263
NONE
NOTES283
~~
ISS SP-69 96
MSS
STANDARD PRACTICE
TABLE 1.
VERTICAL PIPE ATTACHMENTS
SYSTEM
TEMP.
RANGE
DEG. FCC)
= 5 7 7 0 6 4 0 0500808 53b
iTEEL RISE
HANGER & SUPPORT SELECTIONS(Continued)
(For Spring Hangers,See Table 2)
T
HANGER ROD FIXTURES
t
2 BOLT
TEEL RISE
CLAMPS
4 BOLT
WELDED
LITACHMENT
STEEL
-
K
L
120 (49)
8
CLAMPS
5p-69
STEEL OR MALLEABLE IRON
f
BUILDING STRUCTURE ATTACHMENTS
STEEL AND/OR MALLEABLE IRON
TURN
BUCKLES
SWING
EYES
CLEVISES
M
N
O
P
42
NOTE 3
NOTE 3
13. I5
16.17
14
NONE
42
NOTE 3
NOTE 3
13, I5
16.17
14
NONE
ALLOY 42
NOTE 3
ALLOY
NOTE 3
13
17
14
8
42
NOTE 3
NOTE 3
13. 15
16. 17
14
a
42
NOTE 3
NOTE 3
13. I5
16. I7
14
NOTE 5
8
42
NOTE 3
NOTE 3
13.15
16.17
14
18
NOTE 5
tOTEs 2 B
IOTES 2 B 2
NOTES 2 & 3
13, I5
16.17
14
NOTE 5
INSERTS
CCLAMPS
BEAM
CLAMPS
WELDED
TTACHMENl
BRACKETS
Q
R
5
T
U
19.23
20.21.25.27
28,29,30
22.57.58
NOTE 3
31.32.33.34
NONE
20.21.25.27
28.29.30
22.57.58
NOTE 3
31.32.33.34
NONE
20.21.25.27
28.29,30
22.57.58
NOTE 3
31.32 33.34
19.23
20,21.25.27
20,29,30
22,57,58
NOTE 3
)1.32,33,34
19.23
20,21.25,27
28.29.30
22.57.58
NOTE3 .
$1.32.33.34
19.23
20.21,25.27
28.29.30
22.57.58
NOTE 3
Il. 32.33.34
19.23
20.21.25.27
28,29.30
U,57,5a
HOT
A- I
18
NOTE 5
to
450 (232
HOT
A-2
451 (233)
IS
NOTE 5
to
750 (399)
HOT
A-2
451 (233)
qOT?33&5
to
750 (399)
4MBIENT
B
18
n0te5
to
119 (48)
COLD
c-l
33 (1)
18
IO
59 (IS)
COLD
c2
-19 (-28)
to
32 (0)
COLD
c3 B c4
&low
18
NOTE 3
Il. 32.33,34
-19 (-28)
NOTES:
1. Hangers on insulated systems shall incorporate protection saddles
or shields or shall be clampedor welded to the pipe and project
through the insulation to
provide external attachment.(See section 10)
2. The selection of type and materialshall be made by the Design Engineer.
3. The design shallbe in accordance withMSS SP-58 or as specified by the Design Engineer.
4. For shields used withrollers or subject to point loading,see Table 5.
5 . Continuousinserts, embedded plates, anchor bolts and concrete
fasteners may be used as specified by theDesign Engineer.
4
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= 5770b400500809
MSS SP-bS Sb
MSS
472
STANDARD PRACTICE
ADJUSTABLE STEELCLEVlS
HANGER
MPE 1
-
ADJUSTABLE STEELBAND
HANGER
TYPE 7
YOKE TYPE PIPE CLAMP
TYPE-2
EXTENSION PIPE OR
RISER CLAMP
TYPE - 8
-
CARBON OR ALLOY STEEL
THREE BOLT PIPE CLAMP ADJUSTABLE BAND HANGER
TYPE-9
TYPE-3
o
STEEL TURNBUCKLE
TYPE- 13
STEELCLMS
lWE- 14
o
TYPE-4
-
J HANGER
TYPE-5
TOP BEAMCCLAMP
AS SHOWN OR lNMR7ED
TYPE- I 9
SIDE BEAMOR CHANNEL
CLAMP
TYPE-20
3
TOP BEAM CLAMP
WE-25
PIPE CUP
W E -28
e-?
.: ..
CENTERBEAMCLAMP
TYPE-21
SWIVEL TURNBUCKLE
TYPE 15
-
Ø
STEEL PIPE CLAMP
SP-69
SIDE BEAM CLAMP
TYPE-27
l-l
y
i
,
.
ADJ. S W M L RING BAND
HANGER
TYPE - 10
MAUEABLE IRON SOCKET
TYPE- I6
WELDED BEAM ATTACHMENT
WlTH OR WlTHOvT BOLT
TYPE-P
77
...., ....
. .
!
STEEL BEAM CLAMP
WlMNUT
TYPE 28
-
\r.-
:
. ..?
:/ ./
r. ......
I
,
...
I
L
"
SPLIT PIPE RING WITH OR
WITHOUT TURNBUCKLE
TYPE- 11
STEEL WELDLESS EYENUT
TYPE 17
-
c - CLAMP
TYPE-23
-
..
-'.-i,'
.
.
i
ADJUSTABLE SWIVEL PIPE
RING SPLIT RING
OR SOLID
EXTENSION SPLIT PIPE
STEEL OR MAUEABLE
CLAMP
HINGED
OR
TWO BOLT
CONCRETE
INSERT
RING N P E
TYPE-6
TYPE 12
M P E 18
-
-
FIGURE 1.
v
W
UNKED STEEL CLAMP
WITHEYENLIT
TYPE 29
TYPE CHART
5
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- -
U BOLT
M P E 24
MWEABLE BEAM CLAMP
W I EXTENSION PIECE
TYPE"
MSS S P - 6 7
9 6 m 5770640 0500810 174
STANDARD PRACTICE
MSS
L
Q
.
LIGHT WELDED
STEEL BRACKET
TYPE 31
-
SPd9
.
.
LC:.::
.
PIPE STANCHION SADDLE
TYPE * 37
ADJUSTABLE ROLLER
HANGER WITH ORWtlWOuT
SPRING CUSHION ROLL
W E 49
SWIVEL
-
TYPE-43
VERTICAL CONSTANT
SUPPORT HANGER
TYPE-55
-.
,-"
'>.,
i\
MEDIUM WELDED
STEEL BRACKET
TYPE 32
-
L..-<">
ADJUSTABLE PIPE SADDLE
SUPPORT
TYPE-38
SPRING SWAY BRACE
NPE-50
PIPE ROLLC O M P L m
TYPE -44
_._
-
ri
/'
HEAVY WELDED
STEEL BRACKFT
TYPE-33
n
SIDE BEAM BRACKET
TYPE 34
-
STEEL PIPE COVERING
PROTECTIVE SADDLE
TYPE 39
-
PIPE ROLL ANDPIATE
TYPE 45
,r--.
;
PROTECTION SHIELD
N P E 40
-
VARIABLE SPRING HANGER
TYPE 51
-
-
\.,
ADJUSTABLE PIPE ROLL AND
BASE
TYPE -46
HORlZONTALTRAMLER
TYPE-58
~.
,,,---.:
_." '
.\
,'
VARIABLE SPRING
BASE SUPPORT
TYPE-52
I
.
í
PIPE SLIDE8 SLIDE PLATE
TYPE 35
-
SINGLE PIPE ROLL
N P E 41
PIPE SADDLE SUPPORT
TYPE-36
CARBON ORALLOY STEEL
RISER CLAMP
N P E 42
-
-
SPRING
RESTRAINT
CONTROL
DEVICE
TYPE 47
-
c2
SPRING CUSHION
N P E - 48
FIGURE 1.
TRAPEZE HANGER
TYPE-53
CONSTANT
HORIZONTAL
SUPPORT HANGER
NPE-54
TYPE CHART
6
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TRAPEZE HANGER
-
M P E 59
-
MSS SP-69
9b m 5770640 0500811 020
MSS
STANDARD PRACTICE
7.3 Where there is horizontal movement at a
suspended type hanger location, hanger components
shall be selected to allow for swing. Where horizontal
piping displacement exceeds 1 inch, it is common
practice to offset the pipe attachment or structural
attachment by the amountof anticipated displacement
or a percentage thereof. If the vertical angle of the
hanger rodis greater than 4 degrees, a traveling device
should be provided for horizontal movement. In
special cases, vertical angles greater than 4 degrees
may be used provided the resulting horizontal force
and vertical deflection are considered in the piping
and supportdesign. For piping supported from below,
slides, rollers, or roller carriages should be used.
TABLE 2.
VERTICAL
EXPANSION
7.4.2 Variable Spring Hangers shall beused for all
other resilient support requirements except as noted
in Subsection 7.4.3.
7.4.3 Constant Support Hangers shall beused on
pipingsystemswhere
the deviation in supporting
force must be limited to 6 percent and which cannot
be accommodated by a Variable Spring Hanger.
8. ATTACHMENTSMADE BY WELDING OR
BOLTING
ALLOWABLE
VARMFLITY
I
MAX. IH INCH
DEVIATION
I
NOTE(I)
25%
6~
1
1
HANGER
DOUBLE
ROD
HANCER
I
8.2 Welding or bolting or attachments to the building structural steel shall be in accordance with the
AISC Specification for the Design, Fabrication and
Erection of Structural Steel for Buildings. There shall
be no drilling, punching or burning of holes in the
building structural steel without prior approval by the
design engineers.
1
8.3 For attachment to concrete structure, poured
inplace anchor bolts or inserts are preferredwheneverpossible.Whennecessary,
approved concrete
fasteners may be used.
BASE
SUTTORT
I
NOTE (2) AND NOTE(3)
48.;:
I
48.49.5lSS.53.S
51s. 53s
MAX. I INCH
SIS. 53s
(25.4mm) 54.55.56
8.1 All attachments welded to the pipe shall bein
accordance with MSS SP-58 and Pipe Fabrication
Institute, Standard ES-26.
SPRING SUPPORT
SELECTION
I I I
54.55
MAX. 3 INCH
(76.2mm)
54.55
OVER 3 INCH
54.55
(76.2mm)
5435
5 I Ls,s3Ls
54.55.56
I
.
52S
52s
8.4 Recommended applied torque for setscrewsin
C-clamps (Types 19 and 23) is listed below:
S2s
54.55
Thread size
Inch
(mm)
s4.55
54.55
54.55
NOTE(I) VARIABLESPRINGHANGERS
12.7
CONnANT SUPPORT HANGERS
DEVIATION
FROM'
Max
Rudu Mo
Dom -Min Rudi Yo
U
SPECIFIED LOAD = Max Rudi: h l a m ~ t ~Mm
n Red:
:
U
Wax. Reading Moving Down and Min.Reading Moving Up shall be within 6% of spcfifd I d .
'
SP-69
7.4.1 Spring Cushion Hangers maybeusedwhere
vertical movement does not exceed '/s inch (6.3 mm),
and where formal load and movement calculations
are not required.
7.4 Where significant vertical movement of the pipe
occurs at the hanger location, a resilient support must
be used. Selection of resilient supports shall be based
on permissible load variation and effects on adjacent
equipment. Support selection for typical load variationsare shown in Table 2. Load and movement
calculations shall be made for the proper selection of
spring hangers. Vertical movement and load transfer
from riser expansion to horizontal runs shall be given
consideration when applying spring hangers.
( 6.3mm)
=
Y
:
o
'
(2)
- NUMBERSINCOLUMNS ARE TYPENUMBERSFROM FEURE. I.
(3)
- VARIABLESPRING TYPES 51, 52. AND 53. i&STANDARDSPRING.
114
31 8
112
5/8
314
7/ 8
Torque
Inch Pound
(Nm)
6.4
9.6
15.8
14.1
28.2
19.0
22.2
75.1
40
60
125
250
4.5
400
45.2
6.8
665
Note: Caution should be taken not to overtighten the
set screw.
SHORT SPRING AND LDNC SPRING MODELSARE IOWTlFlEDAs
S. SS. AND U. RES'ECTIVELY.
7
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!i
STANDARD PRACTICE
MSS
FOLLOW PIPE MANUFACTURERS RECOMMENDATIONSFOR MATERIAL AND
SERVICE CONDITION. SEE SECTION 19.
FOLLOW PIPE MANUFACTURER'S RECOMMENDATIONS FOR MATERIAL AND
SERVICE CONDITION. SEE SECTION 18.
8 ft (2.4m) MAX SPACING, FOLLOW MANUFACTURERS RECOMMENDATIONS.
SEE SECTION 17.
10 ft (3.Om) MAX SPACING; M I N OF ONE (I) HANGER PER PIPE SECTION CLOSE
TO JOINT ON THE BARREL. ALSO AT CHANGE OF DIRECTION AND BRANCH
CONNECTIONS.
20 ft (6.lm) MAX SPACING; MIN OF ONE (1) HANGER PER PIPE SECTION CLOSE
TO THE JOINT BEHIND THE BELL AND AT CHANGE OF DIRECTION AND
BRANCH CONNECTIONS. FOR PIPE SIZES SIX (6) INCHES (ISOmm) AND UNDER,
INSTALLED ON ANSI B31 PROJECTS, THAT ARE SUBJECTED TO LOADINGS
OTHER THAN WEIGHT OF PIPE AND CONTENTS, THE SPAN SHOULD BE
LIMITED TO THE MAXIMUM SPACING FOR WATER SERVICE STEEL PIPE.
FOLLOW REQUIREMENTS OF THE NATIONAL FIRE PROTECTION ASSOCIATION. SEE SECTION 14.
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SP-69
MSS S P - 6 9
5770640 05008L3 9T3
96
MSS
STANDARD PRACTICE
5p-69
9.5 For pipingsystemsusingtype
40 protection
shields for insulated piping, see Table 5 for spacing.
9. HANGERANDSUPPORTSPACING
9.1 Themaximum spacing of hangers andsupports
shall be as shown in Table 3.
10. PIPE ATTACHMENTS FOR INSULATED
LINES
9.2 Spacingsless than showninTable
3 may be
required to conform withbuilding structure loading
limitations and standard product load ratings.
9.3 Minimum roddiametersfor
are listed in Table 4.
10.1 Theconnections to pipe attachments shall be
outside the insulation so that movement of the line
shall not cause damage to the insulation.
rigidrodhangers
10.2 Insulation protection shields shall beprovided
to protect the vapor barrier of insulation oncold
lines. Under no circumstances shall hangers, supports
or guidesbeapplied
directly to horizontalpipe or
tubing on vapor barriered lines. (See Table 5.)
9.4 When periodic dismantling of a pipingsystem
for cleaning, etc. is anticipated, the designengineer
shall specify any required additional supports.
TABLE 4.
MIN ROD DIAMETER
COLUMNS(3)
1. 2, 6, 7
COLUMNS(3)
3, 4, 8, 9, 10'
NOMINAL
ROD
DIA.
NOMINAL
in
mm
in
mm
3/8
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
12.7
12.7
12.7
15.8
15.8
19.0
22.2
22.2
22.2
25.4
25.4
25.4
31.8
31.8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
9.6
9.6
9.6
9.6
9.6
9.8
9.6
9.6
12.7
12.7
12.7
12.7
12.7
15.8
19.0
19.0
19.0
NOMINAL
PIPE OR
TUBING
SIZE
114
318
I /2
314
3/8
3/8
3/8
1
I 1/4
1 1/2
3/8
3/8
3/8
3/8
2
2 1/2
112
I/2
1/2
3
3 112
4
5/8
5
6
8
510
3/4
10
12
14
16
18
718
7/8
3/4
1
2o
1
I
I 1/4
24
1 114
ROD
DIA.
3/8
1/2
Il2
1/2
1/2
112
5/8
3/4
3/4
3/4
provided Table I and paragraph 7.3 of MSS
SP-58 are satisfied.
(2) Rods may be reduced one size for double rod
hangers. Minimum rod diameter shall be
3/8 (9.6 mm).
(3) Columns noted refer to MSS SP69,Table 3.
in.
9
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MSS SP-b7
MSS
5 7 7 0 6 4 0 0500814 8 3 T
76
SP-69
STANDARD PRACTICE
TABLE 5.
TYPE 40 PROTECTION SHIELDS FOR INSULATED PIPE AND TUBING
NOM. PIPE
SIZE
112 - I 114
I 112
2
- 3 112
4
5
-
8
- 14
- 24
16
6
SHIELD LENGTH SPACING
SHIELD THICKNESS
m
mm
gage
in
ft
rn
12
12
I2
12
18
24
24
305
305
305
305
457
610
610
18
18
18
16
.O48
.O48
,048
7'
9'
16
14
.o60
.O75
12
,105
2. I
2.1
3.0
3.0
3.0
3.0
3.0
NOM. TUBING
SIZE
114
-
314
I
I 1/4
I Ij2- 2
2 1/2
3
- 3 112
4
5
- 6
8
LENGTH
,060
IO
IO
IO
IO
IO
SHIELD THICKNESS SHIELD SPACING
in
mm
gage
in
12
12
12
I2
12
12
12
18
24
305
305
305
305
305
305
305
457
610
18
18
18
18
I8
18
16
16
14
ft
rn
.O48
5'
,048
,048
.O48
.O48
,048
6*
1.5
1.8
2. I
2.4
2.7
3.0
3.0
3.0
3.0
.o60
.o60
.O75
1'
8'
'9
IO
IO
IO
IO
NOTES: The listed spans and shield lengths are
based on insulation with a compressive strength
of 15 psi
15 psi (IO3kPa), span may be
(IO3kPa). For insulation with compressive strengths greater than
increased proportionately up to the maximum allowable aslisted in Table 3. Spans marked
* are the
maximum allowable.
Protection shield gages listed are for use with band type hangers only.
For point loading,increase shield
thickness and length. When shields used
are with rollers, shield thickness shall
be adjusted accordingly
be increased to keep rolling point
of contact within the middle one-third
of the
and shield lengths shall
shield length.For compressive strengths other than
15 psi( IO3kPa), shielddimensions maybe adjusted
accordinelv.
10.3 For cryogenicpipingsystems,shields
incorporating rigid, high density polyurethane foam inserts
or other load bearing insulation should be used. The
support should include means for maintaining vapor
barrier integrity. Because of the temperature/compressive strength relationship of polyurethane foam,
the recommended shield designs shown in Table 5 do
not apply. Shields must be designed to accommodate
loading conditions at both the installation and
operating temperature.
11, MULTIPLE SUPPORTS
1 1.1 Horizontal banks of piping may be supported
on a common base member without regard to the
pipe centerline elevation. The particular method of
support to beused shall be as required by the engineering design.
11.2In the supporting of multiple pipe runs, provisions shall be made to keep the lines in their relative
lateral positions, using clamps or clips as required.
Lines subject to thermal expansionshall be free to roll
axially or slide.
12. RISER SUPPORTS
12.1 The selection and location of riser supports
shall take into consideration the entire weight of the
riser, and adjacent piping, hydrostatic test load conditions, line temperature and available supporting
structure. On a riser subject to expansion, only one
support of the rigid type shall be used.
12.2 Riser clamps (Type 42) shall have a positive
means of engagement between the pipeand the clamp.
12.3 Rigidriser clamps (Type 42), whenused for
deadweight purposes, shall be designed for two times
the calculated load.
10
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~~
0500835 7 7 6 H
I S S SP-69
9b
5770b40
MSS
SP-69
STANDARD PRACTICE
13. ANCHORS, GUIDES AND RESTRAINTS
15. DUCTILE IRON PIPING
13.1 Anchors, guides and restraints shall be located
by the specifications and/or drawings. Should the
need or the desirability of relocating, eliminating or
adding
anchors,
guides or restraints arise, such
changes shall be brought to the attention of the
design engineer for consideration and approval.
15.1 The size of hanger components shall be suitable
for the O.D. of the pipe to be supported.
15.2 For buriedlines, supporting means that may
be required due to soil conditions or settlement of
terminal points, shall be specifiedby
the design
engineer.
13.2 Anchors, guides and restraints shall be designed for imposed loadings as determined by the
design engineer. For guided systems in the absence of
specific lateral loads, the guide shall be designed for
20% of the dead weight load as a minimum.
16. CAST IRON SOIL PIPING
Requirements shall be as set forth in Section 15 except
for spacing as noted in Table 3.
13.3 For pressure piping with joints not having a
restraining design, other positive restraining means
such as clamps, rods and/or thrust blocking shall be
used to rnaintain'the integrity of the joints.
17. GLASS PIPING
17.1 Hangers shall be provided
with
pads or
cushions on the bearing surfaces to prevent scratching the pipe. The hangers shall fit loosely around the
pipe yet contact it through the pads or cushions in a
manner to distribute the load over the largest possible
area. Point loading shallbe avoided. The system of
hangers shall be designedwith the least practical
number ofrigid anchor points. Supports for vertical
piping and all anchors shall be as recommended by
the pipe manufacturer.
13.4 The necessity for,and the location of, shock
suppressors and seismic control devices shall be as
determined by the design engineer.
13.5 The location, type and number of corrective
deviceswhich may be necessary to control any unforeseen vibrations, as determined after the piping is
in service, are not a part of this standard.
14. FIRE PROTECTION SYSTEMS
17.2 Hangers shall be
placed
approximately one
foot (305mm) from each side of fittings or couplings.
At least two hangers shall be used for each 10-foot
(3.0m) section.
14.1 Hangers and
supports
for
fire protection
systems shall conform to the following standards
published by the National Fire Protection Association
in the National Fire Codes for fixed extinguishing
equipment:
18. PLASTIC PIPING
NFPA-1 1-Foam Extinguishing Systems
NFPA-12-Carbon Dioxide Systems
NFPA-13"lnstallation of Sprinkler Systems
NFPA-14-Standpipe and Hose Systems
NFPA-15-Water Spray Systems
NFPA-16"Foam Water Systems
NFPA-17"Dry Chemical Extinguishing Systems
18.1 Rigid
plastic
piping shall normally be supported by the same type of hangers usedwithsteel
pipe.
18.2 In pressure applications, hangers shall be provided with pads or cushions on the bearing surfaces to
prevent scratching the pipe. The hangers shall fit
loosely around the pipe yet contact it through the pads
or cushions in a manner to distribute the load over the
largest possible area. Point loading shall be avoided.
The system of hangers shall be designed with the least
practical number of rigid anchor points. Supports for
14.2 Hangers, in general, are coveredin NFPA-13.
If the system is other than a standard water sprinkler
system, the applicable NFPA Standard shall also be
consulted.
11
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PISS SP-6996
MSS
m 5 7 7 0 6 4 00 5 0 0 8 1 66 0 2
D
STANDARD PRACTICE
verticalpipingandall
anchors shall be as recommended by the pipe manufacturer.
SP-69
19. FIBERGLASSREINFORCEDPIPE(FRP)
19.1 Thesize of hanger shall be suitable forthe
O.D. of the pipe to be supported.
18.3 Support spacing shall bebased on the rnanufacturer’s recommendations for the service conditions.
19.2 Support spacing shall bebased on the manu18.4
Flexible
plastic tubing or rigid plastic pipe
facturer’s
recommendations
for
the service condition.
operating at temperatures high enough to materially
lowerits strength, shall be supportedcontinuously.19.3
FRP shouldnotbepointloaded
and all shields
and hangers in contact with the pipe shall be free of
burrs.
12
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MSS
STANDARD PRACTICE
SP-69
ANNEX A
Referenced Standards and Applicable Dates
This Annex is an integral part of this standard practice which is placed after the main text for convenience.
AISC
7
AISC-1991
Manual of Steel Construction, 9th Edition
ANSI. ANSIIASME. ASME. ASMEIANSI
B31.1-1992
B3 1.3-1993
B3 1.4-1992
B3 1.5-1992
B31.8-1992
B3 1.9-1988
ASME-1992
Power Piping
Chemical Plant and PetroleumRefinery Piping
Liquid Transportation Systems for Hydrocarbons, Liquid Petroleum Gas, Anhydrous Ammonia,
and Alcohols
Refrigeration Piping
Gas Transmission and Distribution PipingSystems
Building ServicesPiping Code
Boiler and Pressure Vessel Code
FM
FM1951-1975
Approval Standard for Pipe Hanger Components
for Automatic Sprinkler Systems
MSS
SP-58-1993
SP-89-1991
Pipe Hangers and Supports- Materials, Design and Manufacture
Pipe Hangers and Supports- Fabrication and Installation Practices
NFPA
NFPA 11-1994
NFPA 12-1993
NFPA 13-1994
NFPA 14-1993
NFPA 15-1990
NFPA 16-1995
NFPA 17-1994
Low Expansion Foam
Carbon Dioxide Extinguishing Systems
Installation of Sprinkler Systems
Installation of Standpipe andHose Systems
Water SprayFixed Systems for Fire Protection
Installation of Deluge Foam-Water Sprinkler and Foam-Water Spray
Systems
Dry Chamical Extinguishing Systems
PFI
ES-26-1993
Welded Load-Bearing Attachments to Pressure Retaining Piping Materials
UL
UL203-1992
Pipe Hanger Equipmentfor Fire Protection Service
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MSS SP-69 76
MSS
5770640 0500818 485
STANDARD PRACTICE
Publications of the following organizations appear in the above list:
AISC
American Institute of Steel Construction, Inc.
400 N. Michigan Avenue, Chicago, IL 6061 1,Phone: (708) 670-2400
ANSI
American National StandardsInstitute
11 West 42nd Street, New York, NY 10036, Phone: (212) 354-3300
ASME
The
American
Society
of Mechanical
Engineers
345 East 47th Street, New York, NY 10017, Phone: (212) 705-7500
FM
Research
Mutual
Factory
1151 Boston-Providence Turnpike, Norwood, MA 02062, Phone: (617) 7624300
MSS
Manufacturers Standardization Societyof the Valve and Fittings Industry, Inc.
127 Park Street, N.E., Vienna, VA 22180,Phone: (703) 281-6613
NFPA
National Fire Protection Association
Battery March Park, Quincy, MA 02269, Phone: (617) 770-3000
PFI
Fabrication
Pipe
Institute
1326 Freeport Road, Pittsburgh, PA 15238, Phone: (412) 2744722
UL
Underwriters Laboratories
333 Pfingsten Road, Northbrook, IL60062, Phone: (708) 272-8800
14
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SP-69
I S S SP-h9
96
5770b40 0500819 311
=
LIST OF MSS STANDARD PRACTICES
NUMBER
SP- 6-1996
SP- 9-1992
SP-25-1993
SP-42-1990 (R 1995)
SP-43-1991 (R 1996)
SP-44-1996
SP-45-1992
SP-51-1991 (R 1995)
SP-53-1995
SP-54-1995
SP-55-1996
SP-58-1993
SP-60-1991
SP-61-1992
SP-65-1994
SP-67-1995
s p a - 1988
SP-69-1996
SP-70-1990
SP-71-1990
SP-72-1992
SP-73-1991
SP-75-1993
SP-77-1995
SP-78-1987 (R 1992)
SP-79-1992
SP-80-1987
SP-81-1995
SP-82-1992
SP-83-1995
SP-85-1994
SP-86-1987 (R 1992)
SP-87-1991 (R 1996)
s p a - 1993
SP-89-1991
SP-90-1986 (R 1991)
SP-91-1992 (R 1996)
SP-92-1987 (R 1992)
SP-93-1987 (R 1992)
SP-94-1992
SP-95-1986 (R 1991)
SP-96-1996
SP-97-1995
sP-98-19%
SP-99-1994
sp-loo-1988
SP-101-1989
SP-102-1989
SP-103-1995
SP-104-1995
SP-105-1996
SP-106-1990 (R 1996)
SP-107-1991
SP-108-1996
SP-109-1991
SP-110-1996
SP-111-1996
SP-112-1993
SP-113-1994
SP-114-1995
SP-115-1995
SP-116-1996
SP-117-1996
SP-118-1996
R-Year
Standard Finishesfor Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and
Fittings
Spot Facingfor Bronze, Iron and Steel Flanges
Standard Marking System for Valves, Fittings, Flanges andUnions
Class 150 Corrosion Resistant Gate, Globe, Angle and Check Valves
with Flanged andButt Weld Ends
Wrought Stainless Steel Butt-welding Fittings
Steel Pipeline Flanges
Bypass andDrain Connections
Class 150 LW Corrosion Resistant Cast Flangesand Flanged Fittings
Quality Standard for Steel Castings andForgings for Valves, Flanges,and Fittings and Other Piping Components Magnetic Particle Examination Method
Quality Standard for Steel Castingsfor Valves, Flanges, andFittings and Othe? Piping Components - Radiographic
Examination Method
Quality Standard for Steel Castings for Valves, Flangesand Fittings and Other Piping Components - Visual Methoc"
for Evaluation of Surface Irrecrularities
Pipe Hangers andSupports - Materials, Design andManufacture
Connecting Flange Joint Between Tapping Sleeves and Tapping Valves
Pressure Testing of Steel Valves
High Pressure ChemicalIndustry Flanges and Threaded Stubsfor Use with Lens Gaskets
Butterfly Valves
High Pressure-Offset Seat Butterfly Valves
Pipe Hangers andSupports - Selection andApplication
Cast Iron Gate Valves, Flanged and Threaded Ends
Cast Iron Swing Check Valves, Flanged and Threaded Ends
Ball Valves with Flanged or Butt-welding Ends for General Service
Brazing Joints for Wrought and CastCopper Alloy Solder Joint Pressure Fittings
Specifications for High Test Wrought Butt Welding Fittings
Guidelines for Pipe Support Contractual Relationships
Cast Iron Plug Valves, Flanged and Threaded Ends
Socket-Welding Reducer Inserts
Bronze Gate, Globe,Angle and CheckValves
Stainless Steel, Bonnetless, FlangedKnife Gate Valves
Valve PressureTesting Methods
Class 3000 Steel PipeUnions, Socket-Welding and Threaded
Cast Iron Globe &Angle Valves, Flanged and Threaded Ends
Guidelines for Metric Data in Standards for Valves, Flanges, Fittings and Actuators
Factory-Made Butt-welding Fittings for Class I Nuclear Piping Applications
Diaphragm Type Valves
Pipe Hangers andSupports - Fabrication and Installation Practices
Guidelines on Terminology for Pipe Hangers andSupports
Guidelines for Manual Operation of Valves
MSS Valve UserGuide
Quality Standard for Steel Castings andForgings for Valves, Flanges,and Fittings and Other Piping Components Liquid Penetrant ExaminationMethod
Quality Standard for Ferritic and Martensitic Steel Castingsfor Valves, Flanges, andFittings and Other Piping
Components - Ultrasonic Examination Method
Swage(d) Nipples and Bull Plugs
Guidelines on Terminology for Valves and Fittings
Integrally Reinforced Forged Branch Outlet Fittings - Socket Welding, Threadedand Buttwelding Ends
Protective Coatings for the Interior of Valves, Hydrants, andFittings
Instrument Valves
Qualification Requirementsfor Elastomer Diaphragmsfor Nuclear Service Diaphragm Type Valves
Part-Turn Valve Actuator Attachment - Flange andDriving Component Dimensions and PerformanceCharacteristics
Multi-Turn Valve Actuator Attachment - Flange and Driving Component Dimensions and Performance Characteristic:
Wrought Copper and CopperAlloy Insert Fittings for Polybutylene Systems
Wrought Copper SolderJoint Pressure Fittings
Instrument Valves for Code Applications
Cast CopperAlloy Flanges and Flanged Fittings, Class
125, 150 dnd300
Transition Union Fittings for Joining Metal and PlasticProducts
Resilient-Seated CastIron-Eccentric Plug Valves
Welded Fabricated Copper SolderJoint Pressure Fittings
Ball Valves Threaded, Socket-Welding, SolderJoint, Grooved and Flared Ends
Gray-Iron and Ductile-Iron Tapping Sleeves
Quality Standard for Evaluation of Cast Surface Finishes
- Visual andTactile Method. This SP must be sold with a
10-surface, three-dimensional Cast Surface Comparator,
which is a necessarypart of the Standard. Additional
comparators may be sold separately.
Connecting Joint between Tapping Machines andTapping Valves
Corrosion Resistant PipeFittings, Threaded and Socket Welding, Class
150 and 1000
Excess Flow Valves for Natural Gas Service
Service Line Valves and Fittings for Drinking Water Systems
Bellows Seals for Globe and Gate Valves
Compact Steel Globe & Check Valves - Flanged, Flangeless, Threaded&Welding Ends (Chemical & Petroleum
Refinery Service)
- Indlcabs year standard reaflirmed without substantive
change.
P
h avalbble upon
request.
A brge number of former MSS Pr&icea b v e been approvedby the ANSI or ANSI Standards, published by others.In order to malntaln a dngk source of authoritative
Infonnatlon, the MSS withdram I t a Standard Practker In such cases.
MANUFACTURERS STANDARDIZATION SOCIETY OF THE
VALVE AND FllTlNGSINDUSTRY, INC.
127 PARK STREET, N.E.
VIRGINIA VIENNA,
22180
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