Determine angle of attachment based on FIGURE 9.3.5.9.1
9.3.5.10.1 - Assembly attachment fittings shall be load rated
9.3.5.10.3 – Rated load shall be adjusted based on angle
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Wednesday, March 7, 2012
Tuesday, March 6, 2012
MAXIMUM HORIZONTAL LOADS
l / r = 200
Brace schedule / size = Sch 40 / 1”
Brace length = 7’0”
Brace Angle = 45°– 59°
Max load = 1735 lbs
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Brace schedule / size = Sch 40 / 1”
Brace length = 7’0”
Brace Angle = 45°– 59°
Max load = 1735 lbs
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Monday, March 5, 2012
Longitudinal Sway Bracing
Not subject to Table 9.3.5.3.2 (a & b)
9.3.5.4.1 - Space to max of 80’
9.3.5.4.3 - The last brace shall be no more than 40’ from the end of the pipe
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9.3.5.4.1 - Space to max of 80’
9.3.5.4.3 - The last brace shall be no more than 40’ from the end of the pipe
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Sunday, March 4, 2012
LATERAL SWAY BRACING PART 2
Table 9.3.5.3.2 (a & b)
Pipe (in.) =
Pipe size being braced
Spacing =
Max interval & max weight per brace
Interpolation between lengths is allowed w/ a detailed engineering analysis
In no case may the brace exceed 40’
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Pipe (in.) =
Pipe size being braced
Spacing =
Max interval & max weight per brace
Interpolation between lengths is allowed w/ a detailed engineering analysis
In no case may the brace exceed 40’
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Saturday, March 3, 2012
LATERAL SWAY BRACING
9.3.5.3.1 - All feed and cross mains regardless of size and branch lines 2-1/2” and greater
9.3.5.3.2 – See Table 9.3.5.3.2 (a & b)
9.3.5.3.3 – Lateral Sway Brace not required on 2-1/2” starter pieces 12’ or less in length
9.3.5.3.4 – The last brace shall be no more than 6’ from the end of the last piece of pipe
9.3.5.3.5 – The last length of pipe shall have a lateral brace
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9.3.5.3.2 – See Table 9.3.5.3.2 (a & b)
9.3.5.3.3 – Lateral Sway Brace not required on 2-1/2” starter pieces 12’ or less in length
9.3.5.3.4 – The last brace shall be no more than 6’ from the end of the last piece of pipe
9.3.5.3.5 – The last length of pipe shall have a lateral brace
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Friday, March 2, 2012
Structural Components & Sway Bracing
NFPA 13
9.3.5.1.2
The Structural Components to which bracing is attached shall be determined to be capable of resisting the added seismic loads.
This is not normally in the scope of Fire Sprinkler Contractors Work, but it does need to be verified that the Structural Engineer has taken this additional load into account.
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9.3.5.1.2
The Structural Components to which bracing is attached shall be determined to be capable of resisting the added seismic loads.
This is not normally in the scope of Fire Sprinkler Contractors Work, but it does need to be verified that the Structural Engineer has taken this additional load into account.
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Thursday, March 1, 2012
NFPA 13 UG STUB-IN
NFPA 13, 2013 edition
6.3.1.1.1* Underground pipe shall be permitted to extend into the building through the slab or wall not more than 24 inches.
A.6.3.1.1.1 Extending the underground into a building provides working room to transition to the appropriate above ground piping. Environmental conditions should be considered as outlined in 23.1.6.1.2
posted by www.firebyknight.com
6.3.1.1.1* Underground pipe shall be permitted to extend into the building through the slab or wall not more than 24 inches.
A.6.3.1.1.1 Extending the underground into a building provides working room to transition to the appropriate above ground piping. Environmental conditions should be considered as outlined in 23.1.6.1.2
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