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HomeMy WebLinkAboutB21005371_APPROVED_ Watershed Apts Deferred Submittal #016 - Roof Anchors - REV 1_AHBL_S19_review19900 144th Avenue NE - Woodinville, WA 98072 Phone (425)-487-5200 - Fax (425)487-5290
Contractors License Numbers: Idaho #RCE-28717 - Oregon CCB #121086 - Washington #SIERRCC145N8
Job:
WATERSHED RENTON
Spec Section No:
625 Williams Ave S
Renton, WA 98057
Submittal No:
07
16
Sent Date:
Revision No:0
01-22-08
Submittal
Reference:Thermal and Moisture Protection
Submittal Name:Roof Anchors
Taylor Galbraith
Sierra Construction Company, Inc.
Contractor:Architect (Primary):
Studio 19 Architects
Jeff Walls
207 1/2 1st Ave S
Suite 300
Seattle, WA 98104
Contractor's Stamp Architect's Stamp
Engineer's Stamp
APPROVED
APPROVED AS NOTED
REJECTED
STUDIO 19 ARCHITECTS
AHBL
AHBL INC
GMD RENTON LLLP
Signature Date
THESE DRAWINGS/PRODUCT DATA HAVE BEEN REVIEWED BY SIERRA
CONSTRUCTION CO. FOR COMPLIANCE WITH THE CONTRACT
DOCUMENTS. THIS REVIEW OF ACCEPTANCE DOES NOT RELIEVE THE
SUBCONTRACTOR FROM THE RESPONSIBILITY FOR CORRECTNESS AND
COMPLETENESS.
*DESIGN TEAM APPROVAL FLOW*
SIERRA CONSTRUCTION IS REQUESTING REVIEW AND APPROVAL FROM
THE FOLLOWING ENTITIES:
SIERRA IS REQUESTING TO HAVE THIS SUBMITTAL REVIEWED BY THE
ABOVE ENTITIES AND RETURNED TO THE PROJECT MANAGEMENT TEAM
BY:
Date
07/26/2022
07/26/2022
08/09/2022
X
X
X
1
AHBL Project No.: 2200335.20
Corrections or comments made on the shop drawings during thisreview do not relieve contractor from compliance with requirementsof the drawings and specifications. This check is only for review ofgeneral conformance with the design concept of the project andgeneral compliance with the information given in the contractdocuments. The contractor is responsible for confirming andcorrelating all quantities and dimensions, selecting fabricationprocesses and techniques of construction, coordinating his workwith that of all other trades, and performing his work in a safe andsatisfactory manner.
Date: 07/26/2022 By: KLELAND
AHBL Inc.
NO EXCEPTIONS TAKEN
REJECTED SEE REMARKS
SUBMIT SPECIFIED ITEM:
REVISE AND RESUBMIT
FURNISH AS CORRECTED
x
Ian McEniry 7/28/2022
REVISION
Received: 06/28/2023 / KJPeterson
BUILDING DIVISIONB21005371 Deferred Submittal
Fall Protection
REVIEWED
Rick Lee 07/03/2023
BUILDING DIVISION
THIS SET OF REVIEWED PLANS MUST BE MADE
AVAILABLE ON THE JOB AT ALL TIMES DURING
CONSTRUCTION.
Note: This review is for the non-structural review only
REVIEWED
By: Alan Findlay, P.E.
Date: 07/14/2023
Super Anchor Safety | 17731 - 147th St. SE, Monroe, WA 98272 USA | (425) 488-8868 | www.superanchor.com
SUPER ANCHOR SAFETY®
CRA Commercial Roof Anchors
Instruction/Specification Manual 2020
Material SpecificationsRisers and base plates: Imported Q235 Steel.Domestic: A-36, 304sst, 316sst.Finish: ASTM 123 or Hot dip galvanized (HDG).Loop Tops: Imported No. 1090=Q235 cast steel. No. 1090S=316 cast sst.Low Temperature: -30ºF to +130ºFFoam Filling: Polyurethane foam filled CRA risers.
!WARNING TO USER!You are required to read and use the Instruction/Specification manual supplied at the time this device was shipped. Improper use and installation can result in serious injury or death. Follow inspection requirements before each use.ENGLISHVERSION
©SCN 2020 [MIT]
Fig.1.0
Backer Plate
Bolt Attached
Base Plate
A-307 Threaded Rod
ComplianceCRA anchors are 3rd party certified to comply withOSHA 1926:502/1910.140(13).“W” part numbers comply with ANSI/IWCA 1-14.1.Use for Fall Arrest and Work Positioning.
Strength Rating
Ultimate Strength Capacity: Min. 5,000lb(22.5kN)
in any direction the load is applied to the top fixture.
Proof Loading: Only part numbers with (W) suffix are
rated for proof loading and must not exceed 2,500lb(11.3kN).
4-1 Design Load: 1,250lb(567kg).
Anchor Locations: Are determined by the fall protection design and use as single anchor point (PPE),
Horizontal Line (HLL) or window washing. Typically specified by the project architect or engineer with spacing of 20-30ft o.c. SAS plan service is available. See pg. 4.
Fall Protection Specifications of Use1 person max. user wt. 340lb including tools and equipment. Use for an anchorage connector designed to
support a suspended component/tie-back line or an active fall protection system with a maximum free fall exposure of 6ft(1.8m) when used as a fall arrest anchor. Horizontal Lifelines (HLL) End anchors or intermediate anchors as shown at pg.4 Fig.4.0. User PPE: Users are required to wear a full body harness (FBH), a personal energy absorber with other fall protection components that comply with current OSHA/ANSI/CSA standards. Window Washing: (W) suffix part numbers are rated for window washing and required to be bolt attached, as shown at Figs. 1.6-1.7, field welded Fig.1.5 or concrete embedment Fig.1.4.
Fastener Options: See Table 3.3Screws: Use only for CRA 8", 12" and 18" riser heights. No HLL or window washing use. Fastener
specifications shown at Table 3.3 pg.3.Wood Substrates: 40ea No. 2022 SAS supplied Hex screws as shown at Figs. 1.1-1.2-1.3 or HeadLok screws with gimlet point for wood. Metal Decking: Install CRA with a maximum riser height of 18” over 22ga or thicker Type-B metal decking. Attach over the top flute as shown at Fig.1.3 with 36ea SAS supplied No. 2022 hex screws.
Fastener penetration shown at Figs 3.3-3.4. For Insulation panels shown at Fig.3.3 use SAS supplied Head-Lok SD tip screws for metal. Note: Riser heights over 18” require to be bolt attached. Project specific engineering is required and use of backer plates as shown at Fig.1.7.Bolt Attachment: Risers over 18" are required to be bolt attached with a min. of 4 each 1/2"d. grade 8 stainless steel or type A307 all thread w/lock nuts see Figs.1.6-1.7. Steel backer plates are required
unless the CRA is bolted directly to a structural steel member. See pg. 3 for bolt hole specifications.Concrete Embedment Bolts: Wedge type 1/2"d. to be specified by project architect/engineer and installed per bolt mfg. specifications. Flat washers are required. See Table 3.1 pg. 3.Poured in Place: 1/2"d. J bolts or equivalent specified by architect or engineer.Concrete PSI: 2500lb min. concrete must be sufficiently cured to support the fall protection load. Field Welded: Weld base plates to structural steel members per SAS/field weld specifications shown in Table 3.2. pg.3 and Figs. 3.0 and 3.2. Base plates may be supplied without bolt holes when requested.Welding required to be performed by a certified welder. Wood Framing: Install over structurally engineered wood framing as shown at Figs. 1.1-1.2 and pg. 4 details for substrate and backer specifications. Wood screws must be installed through at least one layer
of 3/4" plywood. Structural Steel or Wood Beams: As shown at Figs. 1.6-4.4, use a CRA standard or custom sized anchor and backer plate that allows bolts or A307 rod to be positioned as close as possible to the beam.
Structural Support
The anchor attachment point must be structurally capable of supporting 5,000lb or 2x the intended fall protection load per OSHA 1910.140(13). 3rd party structural engineering is available from SAS upon request. For example: 1 person w/energy absorber maximum arrest force of 1,800lb x 2= 3,600lb attachment point. Wood Framing: Typical wood framed attachment specifications using 16x16" base plates are shown on pg. 4. Installation design specifications by a qualified engineering firm may be used without approval from SAS.
CRA-W
Cast Loop Top
PID Label Serial No. Tag
Riser52 Hole
Base Plate
Fig.1.1
Fig.1.2
Fig.1.3
Fig.1.4
Fig.1.5
Fig.1.6Fig.1.7
Screw Fasteners
Screw Fasteners
Typical 7/6" OSB
Substrate 3/4" Plywood
Backer. See pg.4.
40ea Hex screws
3/4" Plywood Primary
Substrate.
Backer not required.
40ea Hex screws
Type B Metal Deck
36ea Hex screws
Attach only to 3.5" top flutes spaced 6.0"o.c.
Minimum Thickness 22 gauge.
Concrete Embedment
4 or 8 Bolt Attachment. See Table 3.1.
Field Welded Base Plate
See Table 3.2 for weld specification.Request substrate report for thickness.
Bolt w/backer plate or attach w/HeadLok screws.
Insulated Panels w/Metal Decking
B21005371 Deferred Submittal
Fall Protection
REVISION
Received: 06/28/2023 / KJPeterson
BUILDING DIVISION
REVIEWED
By: Alan Findlay, P.E. Date: 07/14/2023
SUPER ANCHOR SAFETY®Page 2CRA Manual 2020 English Version
Inspections/MaintenanceAnchors are required to be inspected prior to installation and use for fall protection to confirm they are free of defects and verify the correct fasteners have been used. A record of annual inspections by a qualified or competent person should be maintained. SAS inspection points may be used as part of the building owner’s maintenance plan. Warning! Anchors subjected to a free fall or other damage must be tagged to prevent further use until inspected by a qualified or competent person.
Inspection points . =Remove From Service. =Repair.
Model SpecificationsCRA anchors in Table 1.0 are standard design riser and base plates. Custom fabricated anchors are available. US mfg. CRA’s are supplied in 304 or 316sst. Imported CRA’s are supplied with 304 risers and 430 base plates. The vent hole required for galvanizing is plugged with a 3/8”sst hex screw and thread sealant. The plug is removable for foam filling if necessary. Reapply sealant if the plug is removed.
Inspect welds. If cracks present.
Rust present. Clean and apply cold zinc coating.
PID Label Missing. Request replacement labels.
Riser is bent or deformed.
Missing fasteners. Do not use anchor until installation is corrected.
Vent hole plug missing. Request replacement vent plug.
Table 1
Use Rating RiserHeight PartName
Material SASPart No.
Top Fixture Fastener Specifications Approx wt/lbSchO.D.Base Type No.Type Wood/Metal Concrete
Rated For WindowWashing
1 PersonPPEAnchor
HLL EndandIntermediateAnchors
8 CRA-8W 40 3.0”3/8”
▲HDG 1035-W 1090 Q235 Screws
40ea
Wood
36ea
Metal
Hex BoltMin. 4 ea1/2” Grd 8or SST
Wedge
Bolts
4ea 1/2”d.
See
Table 3.1
36 304sst 1035-WS
1090-S 316sst 316sst 1035-WSX
12 CRA-12W 40 3.0”3/8”
▲HDG 1032-W 1090 Q235
41 304sst 1032-WS 1090-S 316sst 316sst 1032-WSX
18 CRA-18W 40 3.0”3/8”
▲HDG 1033-W 1090 Q235
4 or 8 46 304sst 1033-WS
1090-S 316sst 316sst 1033-WSX
24 CRA-24W 80 3.0”5/8”
▲HDG 1042-WG 1090 Q235
Hex Bolt Min.4ea1/2” Grd 8 SST or
A-307
All Thread
Wedge
Bolts
8ea. 1/2”d.See Table3.1
64 304sst 1042-WS
1090-S 316sst 316sst 1042-WSX
30 80 4.5”7/8”
HDG 1025-W2 *1093
Q345
81 304sst 1025-W2S *1093-S
1090-S 316sst 316sst 1025-W2SX
36 CRA-36W22.0” i.d.Loop Top 80 4.5”1.0”
HDG 1026-W 2 *1093
1090
Q345
95
304sst 1026-W2S *1093-S
316sst 316sst 1026-W2SX
1 Person PPEAnchor HLL End andIntermediateAnchors
30 CRA-30 80 3.0”5/8”
HDG 1025-G 1090 Q235
66 304sst 1025-S
1090-S
316sst 316sst 1025-SX
36 CRA-36 80 3.0”3/4”
HDG 1026-G 1090 Q235
79 304sst 1026-S 1090-S 316sst 316sst 1048-SX
∆
∆
∆
∆
∆
∆ ∆
∆ ∆
∆ ∆
CRA-30W22.0” i.d.Loop Top
CRA Table 1 Spec Sheet 03-2020 ©SCN [R]
Table 1.0 Key CodeW= Rated For Window Washing.G/HDG= ASTM 123 Hot Dip Galvanized.S= 304 Grade Stainless Steel.X= 316 Grade Stainless Steel. Max proof load 2,500lb.
#14 or HeadLok screws, bolt attached, concrete embedment or field weld. Bolt attached, concrete embedment or field weld.=Stock anchors *2.0” i.d. Loop Top option.Note: Bolt attachment may require a backer plate.
US mfg. Labelw/Serial No.
Import mfg.Serial No.Tag
Fig.2.1
Carabiner
Fig.2.0Snaphook
Fig.2.2Non-compatibility. Do not attach two connectors to a loop top.
3.0”o.d. Riser SpecificationsCRA-W 8-24” and CRA 30-36” are fabricated with3.0”o.d. risers and 1-3/8”i.d. loop tops.
4.5”o.d. Riser SpecificationsCRA-W2 30-36” are fabricated with 4.5”o.d. risers and No.1093 2.0” i.d. loop tops. 1090 loop topsare available as a custom mfg.
Fig.2.3 Fig.2.4
Fig.2.7 Loop TopSide View
Part No.
Fig.2.6 No.1090S 316sst
Table 1.1 Riser Dimensions
3”o.d. Riser Wall Wall Thickness
Sch. US Mfg.Import Q235 US Mfg.Import
40 2.875 2.90 [76mm]
0.203 6mm [0.236]
80 0.276 8mm [0.314]
4.5”o.d. Riser Wall Wall Thickness
80 4.500 N/A 0.337 N/A
=Nominal measurement
Fig.2.5
5M Strength Rating
SAS Part No.
Date of Mfg.
ANSI Z359.1
3/8” sst Hex Screw.May be removed toapply foam filling.
Loop Top Markings
No.1090 Cast Steel
Loop Top FixturesNo. 1090 Loop tops are designed for compatibility with snaphooks, carabiners, and SAS HLL fixtures shown on pg.4. Do not attach more than one connector to a loop top as shown at Fig.2.2.No. 1093 Loop Tops require carabiner connectors.
B21005371 Deferred Submittal
Fall Protection
REVISION
Received: 06/28/2023 / KJPeterson
BUILDING DIVISION
REVIEWED
By: Alan Findlay, P.E. Date: 07/14/2023
SUPER ANCHOR SAFETY®Page 3CRA Manual 2020 English Version
Typ 1/4”
Base and Backer Plate Specifications
Backer plates shown at Figs. 1.6-1.7 are required for bolt attached CRA’s and
have the same drill hole sizes and locations as the CRA base plates. Standard
base and backer plates are 16x16", 12x12” and 10x10". Custom size base and
backers are available upon request. See Table 3.0.
Concrete Embedment
Concrete wedge bolts have a maximum spacing of 4-3/8"o.c. requiring a
minimum base plate dimension of 10x10". 9/16”d. wedge bolt holes are
shown in red on Figs. 3.0-3.1-3.2. See Table 3.1 for wedge bolt requirements.
Fig.3.0
52 Hole Base/Backer Plates
CRA-W 8"-12"-18" are fabricated with 3/8" holes for use
with #14 screws and HeadLok screws. Any of the 12ea
9/16"d. holes shown in black and red are specified for
1/2"d. bolts. Bolt holes are purposely oversized.
Fig.3.1
Bolt Attached Base/Backer Plates 16x16"/12x12"
16x16" and 12x12" plates are fabricated with 4, 8 or
16 bolt holes as required for installation. Any of the
9/16"d. holes may be used for bolt attachment. Note:
Weld specifications are the same as 16x16" plates.
Fig.3.2
Bolt Attached Base/Backer Plates 10x10"
10x10" plates are fabricated with 8ea 9/16"
bolt holes. Any of the holes may be used for
bolt or concrete embedment.
Fig.3.3
Fig.3.4
Enlarging Bolt Holes
Any of the 3/8" or 9/16" bolt holes may be
field drilled for larger diameter bolts and to
accommodate installation specifications.
Application of a rust preventative coating to
bare metal is required.
Field WeldingApply 2 coats or more of a rust preventative coating to all field welds and raw risers.
Table 3.0 Fastener Hole Specifications
Base Plate Riser Sq"Dimensions Bolt9/16"Screws3/8"
Standard 52 hole 8/12/18"16 12 40
Bolt Attach 24/30/36"10/12/16 4-8-16 N/AConcrete 8 up to 36"
No. of wedge bolts are specified by the concrete thickness.
Table 3.1 Concrete Embedment
Model Base Plate Min. Embed
4 bolt 8 bolt
CRA-W8
10x10"
up to
16x16"
2.625 N/ACRA-W12 3.75
CRA-W18 5.50 3.50
CRA-W24 6.875 4.50
CRA-W30 N/A 5.50
CRA-W36 6.50
Reference: DHG report July 18-2018 pg.5.
Hilti KB-TZ Expansion anchors or =.
Table 3.2 Field Weld
Base Plate Side A Side B Weld
10x10"2.5"
5.0"1/4"12x12"3.5"
16x16"5.5"
Reference: DHG report July 18-2018 pg.3.
Fastener Specifications
Use only SAS supplied or specified fastener types as shown in
Table 3.3. Do not substitute with other types unless they have
been engineered by a qualified person. Bolts require lock
nuts/washers. Threaded rod on both ends. Grade 8 minimum.
Recommend to use Grade 304 or 316 stainless steel or=.Fastener Penetration
Wood and metal substrates require a minimum thread
penetration of 3/4" not including the screw tip.
Table 3.3
1/2"d. Hex Bolt
Size to fit2.5" LengthThreaded RodA-307 galv. or SST
1/8" Min. thread
penetration
Lock nuts/washers
both ends
Wedge Anchor
1/2"d. See Table 3.1 for length.#14 HexScrew
5/16"
drive
SD-3L
drive Max length 18"HeadLok Screw
SP point for wood.
SD self-drilling tipfor metal panels.
HeadLok Screws
through insulation
and metal decking.
#14 Hex Screws
through wood.
Threads penetrate
3/4" minimum.
B21005371 Deferred Submittal
Fall ProtectionREVISION
Received: 06/28/2023 / KJPeterson
BUILDING DIVISION
REVIEWED
By: Alan Findlay, P.E. Date: 07/14/2023
SUPER ANCHOR SAFETY®Page 4CRA Manual 2020 English Version
Horizontal Lifeline Systems (HLLS)
CRA’s used for HLLS end terminations are required to be bolt attached, concrete
embedded or field welded. CRA’s used for intermediate anchors with a maximum riser
height of 18” may be attached with SAS specified screws. See Figs. 4.1-4.2-4.3 for
SAS supplied HLL fixtures. Components mfg. by others may be used when specified
by a competent or qualified person or project architect/engineer. Consult SAS 2018
HLL System Instruction/Specification manual.
Consult SAS plan service for anchor
installation recommendations and
HLL system design.
Fig.4.0
Fig.4.1
Fig.4.2
Fig.4.3
Fig.4.4
Fig.4.5
Fig.4.9
Fig.4.10
Fig.4.11
Fig.4.6
Fig.4.7
Fig.4.8
CRA HLL end
termination
CRA HLL
intermediate
anchor
Bolt Attached SST Jaw-Jaw
Turnbuckle No. 1058-S
3/8" Wire Rope eye thimbleNo. 1082-S Coupler
Bolt attached Metallic Energy Absorber No. 1059
See 2020 Energy Absorber Addendum
tor optional absorber models.
Bolt attached Galv. Jaw-Jaw Turnbuckle No. 1058
PID Labels are made from adhesive backed vinyl with a clear vinyl cover. Request
replacement labels by contacting SAS. An image file of the original label is required. Wood Framing DetailsInstallation details shown here are typical for 2x4"/I-Joist wood framed structures with primary sheathing less than 3/4" thick. Architects/engineers may provide alternate framing/attachment specifications.
PID Label
Clear Cover
Glue-lam or
wood beam
1/2" bolts or
A-307
threaded rod.
Shims to reduce the margin
between bolts and the
beam face.
Approx 24" length.
CRA Backer Plate Lock nut w/washer
Top chord or I-Joist
w/7/16" sheathing.
3/4x36" length plywood
backer to fill space
between framing.
One row of fasteners
centered over top chord.
WARNING! Do not
install CRA anchors
onto OSB of any
dimension.
3/4" plywood top
sheathing or backers
are required.
3/4x48x48" plywood
top sheathing
Top sheathing attached
per architect’s specification.
Primary sheathing Top chord or I-Joist
w/7/16" sheathing.
Primary Sheathing
Bolt attached with plywood under
sheathing and CRA backer plate.
CRA backer plate
CRA Sloped
Specify degree of riser
and loop top orientation.
“A” Orientation
“B” Orientation
CRA Riser FlashingSAS supplied Master Flash™ EPDM w/35yr service life. Use with 3" and 4-1/2" risers. Seal the flashing collar w/sst pipe clamp. Flashings required for membrane or other types of roofing materials to be specified by the project architect or roofing contractor. Order complete Master Flash kit No. 2050-A.
SAS No. 2050 Master Flash
Pipe ClampDeck screws
4" Flashing
Height
TiteBond™ CaulkingCRA Service Zone 360 d e g r e e s
Lifeline o
r
S
R
L
Max. User Wt.: 340lb
Max. Free Fall: 6ft
Maximum Arrest force: 1800lb
Use of a personal energy
absorber is required.
3/4x28x36" plywood backer
24" Max. spacing for 2x4" 2-3/4"2-3/4"2-3/4"2-3/4"24" or less spacing
3/4x28x36" under sheathing
User warning and specifications Material Type
Compliance
Ok to use this application with 3/4"plywood backer below 19/32" wood roofsheathing. fill all holes with wood screwsas required by anchor mfr/supplier - seepage 2. Figure 4.6 requires additionalengr specification regarding 3/4" plywoodoverlay attachment to roof shtg/ framing
B21005371 Deferred Submittal
Fall Protection
REVISION
Received: 06/28/2023 / KJPeterson
BUILDING DIVISION
REVIEWED
By: Alan Findlay, P.E. Date: 07/14/2023
Super Anchor Safety | 17731 - 147th St. SE, Monroe, WA 98272 USA | (425) 488-8868 | www.superanchor.com
Page 8E/S SAS 2018 Fall Protection Manual / Manual de Protección Contra Caídas 2018 de SAS
Rigging/Length of Fall Plan
The Sample Length of Fall Plan (LOFP) is intended as a guideline only.
Each user is required to draft their own Job Specific Fall Protection Plan.
Cordaje/Plan de Distancia de CaídaEl plan de distancia de caída se muestra (LOFP, por sus siglas en inglés) debe utilizarse únicamente como guía. Se solicita a cada usuario elaborar su propio Plan de Protección contra Caídas conforme a su trabajo específico.
Calculate Length of Fall (A+D+E+F+G)=LOFP
Factors: Sample Plan
1) Free fall Length “A” 72”(1.8m)
2) Rope grab deceleration “D” 12”(0.3m)
3) Absorber deployment “E” 42”(1.06m)
4) Harness stretch “F” 12”(0.3m)
Total Length of Fall (LOF) 138”(3.5m)
5) Ground clearance “G” 52”(1.3m)
Length of Fall Plan (LOFP) 190”(4.8m)
Note: Rope grab deceleration “D” may be
eliminated from the LOF by use of a Limiter Knot.
Fall Arrest Line Slack “C” Slack in the lifeline is required to travel along theleading edge as shown at Fig.8.0. The greater the slack, the wider the range of horizontal movement.Line slack is calculated by subtracting the D-ringheight “B” from the free fall length “A”. C= 20”(0.5m)WARNING! Too much line slack will increase the free fall length. Make adjustments to limit the slack.
Calcular Distancia de Caída (A+D+E+F+G)=LOFP
Factores: Plan de Muestra”
1) Distancia de caída Libre “A” 72”(1.8m)
2) Desaceleración de polea de tracción “D” 12”(0.3m)
3) Despliegue de amortiguador “E” 42”(1.06m)
4) Elasticidad de arnés “F” 12”(0.3m)
Distancia total de caída (LOF) 138”(3.5m)
5) Distancia hasta el suelo “G” 52”(1.3m)
Distancia del Plan de Caída (LOFP) 190”(4.8m)
Nota: la desaceleración de la polea de tracción “D”
podría eliminarse de LOF por el uso de un Nudo limitador.
Cuerda Floja de Retención de Caída “C”Se requiere que la cuerda de salvavidas este floja y se desplace a lo largo del borde frontal como se muestra en la Fig.8.0. Mientras mayor sea la cuerda floja, más ancho será el margen de movimiento horizontal. La cuerda floja se calcula restando la altura del anillo en D “B” de la distancia de caída libre “A”. C = 20”(0.5m) ¡ADVERTENCIA! Demasiada cuerda floja aumentará la distancia de caída. Realice los ajustes necesarios para restringir la cuerda floja.
“C”Line slackCuerda Floja20”(0.5m)
Leading EdgeBorde Frontal
Energy Absorber Amortiguador de Energía
Fig.8.1
“A”Free-fallCaída Libre72”(1.8m)A=(B+C)
“D”Rope Grab DecelerationDesaceleración de la Polea de Tracción12”(0.3m)
“E”Absorber DeploymentDespliegue de Amortiguador42”(1.06m)
Lengthof Fall “LOF”Distanciade Caída “LOF”11ft-6”138” (3.5m)
Fig. 8.2
“F”Harness StretchTensión de Arnés12”(0.3m)
“G”GroundclearanceD-ringheight.Distanciaal sueloAltura deAnillo en D.52”(1.3m)
Limiter KnotBelow RopeGrabNudo LimitadorDebajo de laPolea de Tracción
“B”Dorsal D-ringAnillo Dorsal en D52”(1.3m)
Lifeline Rigging Sample Plan.Anchor Service Zones: Are based on a max. free fall of 6ft(1.8m) and are specified as a radius or diameter that extends from an anchor point to the leading edge or other fall hazard. Lifeline Working Length is the distance between the anchor point and the leading edge + the line slack. A rope grab is used to fix the workers position on the lifeline and a “termination knot” is used to gauge or limit the free fall length. The excess lifeline below the rope grab or termination knot is surplus line.Rigging Example: Attach lifeline to anchor point “A”. With tension on the line move the rope grab down slope vertically to the leading edge shown at Fig.8.4. From this position, add the line slack “C” calculated in your own LOF plan and tie a “limiter knot” at that point.(overhand or half hitch knot) The rope grab may be positioned at the limiter knot. As you travel along the leading edge away from the vertical position, you will be forced upslope as the line slack is reduced. Fig.8.5 is the max. leading edge travel allowed by anchor “A”. Further travel along the leading edge without lengthening the free fall will require to use anchor “B”. If your JSP and slope angle allows limited duration exposure, disconnect from anchor “A” and move to anchor “B”. 100% tie-off will require to use a second lifeline attached to anchor point “B”. A free fall with line slack will generate a swing fall. Be sure to inspect for obstacle hazards below the leading edge. Lengthening the free fall to more than 6ft(1.8m) is not permitted by OSHA/ANSI or CSA. Job Specific Plan by employer or end user.
Zone Overlap AreaZona de Solapamiento
Lifeline PositionPosición de Cuerda Salvavidas “B”
Lifeline PositionPosición de Cuerda Salvavidas “A”
Line SlackCuerda Floja
Min. 6ft(1.8m)Gable Edge Fall Hazard / Peligro de Caída en HastialAnchor Service Zone (ASZ) “B” RadiusZona de Servicio de Ancla (ASZ, por sus Siglas en Inglés) Radio “B”
Leading Edge Fall HazardPeligro de Caída de Borde Frontal
Surplus LineCuerda excedente
Anchor “B”Ancla “B”Anchor “A”Ancla “A”
Max. travel forASZ “A”Zona de Servicio de Ancla (ASZ, por sus Siglas en Inglés) Radio “A”Live(working) length / Longitud activa (de trabajo)Lifeline in tensionno slack above rope grabCuerda Salvavidas tensionada Sin floja sobre la polea de tracción
Fig.8.6 Fig.8.5
Fig.8.4
Fig.8.0
SuperGrab
Insufficient Ground ClearanceWARNING! A failure to calculate the LOF can result in strikingthe ground or a lower level WARNING: PROMPT RESCUE!A plan for immediate rescue is necessary to avoid serious injury or death resulting from suspension trauma. Request SAS Trauma Strap No. 6060
Distancia al Suelo Insuficiente¡ADVERTENCIA! Un error en el cálculo de LOFpuede ocasionar un golpe contra el suelo o nivel inferior ADVERTENCIA: ¡RESCATE RÁPIDO!Se requiere de un plan de rescate inmediato para evitar lesiones o muerte a raíz de un trauma de suspensión. Solicitar cinturón para traumatismo de SAS No. 6060
Plan de Muestra de Cordaje de Cuerda Salvavidas.Zonas de Servicio de Anclaje: se basan en una caída libre máxima de 6 pies(1.8m) y se determinan como radio o diámetro que se extiende desde un punto de anclaje al borde frontal u otro peligro de caída. La Distancia de Trabajo de la Cuerda Salvavidas corresponde al tramo desde el punto de anclaje y el borde frontal + de la cuerda floja. Se utiliza una polea de tracción para arreglar la posición del trabajador en la cuerda salvavidas. También se utiliza un “nudo de cierre” para medir o limitar la distancia de caída libre. El exceso de cuerda salvavidas por debajo de la polea de tracción o nudo de cierre se considera Cuerda excedente.Ejemplo de Cordaje: Coloque la cuerda salvavidas en el punto de anclaje “A”. Aplicando tensión sobre la Cuerda, mueva la polea de tracción cuesta abajo verticalmente hacia el borde frontal tal como se muestra en la Fig.8.4. Desde esta posición, agregue la cuerda floja “C” calculada en su propio plan LOF y amarre un “nudo limitador” en dicho punto (nudo simple o medio nudo). La polea de tracción debe ubicarse en el nudo limitador. A medida que se desplaza por el borde frontal lejos de la posición vertical, deberá moverse cuesta arriba mientras se reduce la cuerda floja. Fig.8.5 Corresponde al desplazamiento máximo del borde frontal permitido por el ancla “A”. Un desplazamiento superior a lo largo del borde frontal sin la prolongación de la caída libre exigirá el uso de un ancla “B”. Si su JSP y ángulo de cuesta le permiten una exposición de duración limitada, desconecte del ancla “A” y desplace hasta el ancla “B”. Un amarre del 100% requerirá del uso de una segunda cuerda salvavidas conectada al punto de anclaje “B”. Una caída con la cuerda floja provocará una caída con oscilación Asegúrese de revisar obstáculos que representen un peligro para el borde frontal.
La expansión de la caída libre por más
de 6 pies(1.8m) no está permitida por la
OSHA/ANSI o CSA.
Plan específico del trabajo por el
empleador o usuario final.
Fig.8.3 Sample Rigging Plan / Plan de Cordaje de Muestra
Rope Grab or
Fall Arrester
Polea de Tracción o
Dispositivo de Retención
de Caída
Limiter Knot
Nudo Limitador
LOF+GTotal=15ft-10”190”(4.8m)
Anchor Service Zone (ASZ) “A” RadiusZona de Servicio de Ancla (ASZ, por sus Siglas en Inglés) Radio “A”B21005371 Deferred Submittal
Fall Protection REVISION
Received: 06/28/2023 / KJPeterson
BUILDING DIVISION
REVIEWED
By: Alan Findlay, P.E. Date: 07/14/2023
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"29'-3"12'-0"27'-6"29'-6"28'-8"28'-6"33'-11"18'-7"20ea - 1033-W - 18" CRA w/Loop Top
GC TO COORDINATE ROOF ANCHOR LOCATIONS WITH SOLAR ARRAY AND ROOFTOP EQUIPMENT AS NECESSARY. IM_S19B21005371 Deferred SubmittalFall ProtectionREVISION Received: 06/28/2023 / KJPetersonBUILDING DIVISIONREVIEWEDBy: Alan Findlay, P.E. Date: 07/14/2023