A02_16_Drawings_CBT_Draft_Tube_Scaffolds.pdf

℄ of Distributor

1'-0"

Top of new proposed work platform

Anchor elevation

1'-2 7/8"

Access platform

Mid Plate (MP)

Center of manway

Wing Plate

(WP)

PLAN VIEW OF WORK PLATFORM SURFACE

SCALE: 1" = 1'-0"

MID PLATE (MP)

TWO THUS

SCALE: 1 1/2" = 1'-0"

5'-6 1/2"

1'-8"

8 1/4" 8 1/4"

See Detail 1

6 7/8"

2 1/4"

3 1/2"

8 3/4" 2 1/4"

3 1/2"

8 3/4"

1 1/4"

3'-5 1/4"

1 1/4"

R1 3/4"

See Detail 3

R2'-9 1/4"

1/4"

6" Typ.

See Detail 1

1'-2" Typ.

4'-4"

1'-0 1/2"

1'-0 1/4"

Typ.

3 1/2" Typ.

9 1/2" Typ.

1 3/8" Typ.

See Detail 2

R1 3/4" Typ.

WING PLATE (WP)

TWO THUS

SCALE: 1 1/2" = 1'-0"

R2'-9 1/4"

5 5/8" Typ.

3'-9 3/4"

1"

1 1/2"

1 1/2"

1"

1 1/2"

1 1/2"

3"

4"4"

AA

CENTER SUPPORT (CS)

ONE THUS

SCALE: 1 1/2" = 1'-0"

1 1/2"

1"

1 1/2"

2'-6"

1 1/2"

1"

2'-11"

11/16" Ø holes

END SUPPORT (ES)

TWO THUS

SCALE: 1 1/2" = 1'-0"

1 1/4"

1/4"

1'-5 1/2"

4" 4"

ES-1

B

3"

1 3/4"

1"

1 1/2"

4"

11/16" Ø holes

ES-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

7/8" Cut out centered in bottom face

SECTION A-A

SCALE: 1 1/2" = 1'-0"

1'-3 1/4"

2 3/4"

1 1/2"

2"

WF-2

FOUR THUS

SCALE: 1 1/2" = 1'-0"

WF-5

WF-3 WF-3

1/4"

2 1/8" 1'-0 1/4"

2'-0"

1'-2 1/4" 2 1/8"

9"

2"

2"

4'-2 3/4"

2"

5"

3'-8 3/4"

5"

4'-6 3/4"

1 1/4"

1 1/2"

WING FRAME (WF)

TWO THUS

SCALE: 1 1/2" = 1'-0"

WF-2

WF-1

WF-4

TYP

WF-5 TO TUBE

WF-4

TYP

SIDE FACE

TYP

TOP AND BOTTOM

(3/16)

(3/16)

60°

60°

WF-6

WF-3

6 3/4"

4 1/4"

2"

11"

5/16

WF-4

FOUR THUS

SCALE: 1 1/2" = 1'-0"

TYP

WF-3 TO TUBE

2"

Ø3/4"

3 1/4"

R1 1/4"

WF-3

EIGHT THUS

SCALE: 1 1/2" = 1'-0"

3"

1 3/4"

1"

1 1/2"

4"

11/16" Ø holes

WF-5

FOUR THUS

SCALE: 1 1/2" = 1'-0"

1'-10"

WF-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

PLAN VIEW OF WORK PLATFORM

SCALE: 1" = 1'-0"

End Support (ES)

Frame Wing (FW)

End Support (ES)

Perimeter at top of work platform

Perimeter for

Anchor placement

Center

Support

(CS)

Center of manway

Anchor location symmetrical about center of manway

1'-8"

10 3/8"

10 3/8"

1'-1"

2'-0"

1'-1"

7/8" Cut out centered in bottom face

SECTION B-B

SCALE: 1 1/2" = 1'-0"

2"

1 1/4"

In tread plate, drill and countersink for 2 - 5/16-18 flathead machine steel screws.

In tube, drill and tap for

5/16-18 machine screws.

DETAIL 3

PLATE TO TUBE ATTACHMENT

4 - PLACES

DETAIL 1

PLATE TO TUBE ATTACHMENT

8 - PLACES

1/2"

2"

In tread plate, drill and countersink for 2 - 5/16-18 flathead machine steel screws.

In tube, drill and tap for

5/16-18 machine screws.

DETAIL 2

PLATFORM RETENTION CLIP

4 - PLACES

1 1/2"

5/8" Ø Bolt with 2 - nuts and 2 - flat washers

2"

1 3/4"

Alum. angle

3"x3"x3/8" 3" long with 11/16" Ø hole

Aluminum tread plate

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

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WORK PLATFORM

PLANS, SECTIONS, AND

DETAILS

BILLINGS, MT

245-600-60054

2019-09-30

ELEVATION PLATFORMS IN DRAFT TUBE

SCALE: 1/2" = 1'-0"

NOTES

1. This access platform intended live load is two craftsman, 250 lbs. each concentrated load and a uniform load of 20 pounds per square foot. The platform was designed for four (4) times the intended live load. Design in accordance with ADM 2015-ASD and custom factored loads.

2. Bolts 5/8" Ø, aluminum 2024-T4 Alloy.

3. Welding:

a. Aluminum welding by TIG, with 4043 filler material in accordance with AWS D1.2. Min. fillet 3/16" unless noted.

4. Materials:

a. Aluminum - alloy 6061-T6

PARTS LIST

PART PART NUMBER Material NO. SIZE LENGTH DESCRIPTION LOCATION

FW FRAME WING

WF-6 Aluminum Tube 2

3"x2"x1/4" 4'-6 3/4"

WF-1 Aluminum Tube 2

3"x2"x1/4" 1'-10"

WF-2 Aluminum Tube 4 3"x2x"1/4" 1'-3 1/4"

WF-3 Aluminum Plate 8 3/8"x2 1/2" 0'-3 1/4"

WF-4 Aluminum Tube 4 3"x2"x1/4"

0'-11"

WF-5 Aluminum Plate 6 3/8"x3"

0'-4"

ES END SUPPORT

ES-2 Aluminum Tube 2

3"x3"x1/4"

2'-11"

ES-1 Aluminum Plate 2

3/8"x3" 0'-4"

CS CENTER SUPPORT

Aluminum Tube 1 3"x2"x1/4" 3'-9 3/4"

WP WING PLATE

Aluminum Tread Plate2

3/8"x12 1/2" 4'-4"

Aluminum Angle

3"x3"x3/8"

4'-5" Retention Clip

Aluminum Bolt 4 5/8" Ø x

0'-4" Retention Clip

Aluminum Nut 8 5/8" Ø Retention Clip

Aluminum Flat Washer8 for 5/8" Ø Bolt Retention Clip

MP MID PLATE

Aluminum Tread Plate2

3/8"x20" 5'-6 1/2"

LOOSE ITEMS BOLTS Aluminum 8 5/8" Ø x

0'-3"

Bolt, 2-flat washers, nut

FW to ES

BOLTS Aluminum 4 5/8" Ø x

0'-3"

Bolt, 2-flat washers, nut

ES to CS

MACHINE

SCREWS

Steel 24 5/16-18 x

0'-1" Flat head

Plates to

Supports

REFERENCE DRAWING

ACCESS PLATFORM 245-600-60057

ANCHOR SECTION AND DETAILS 245-600-60060

UNITS 1 AND 2, TURBINE AND AUXILIARIES 245-704-5684

UNITS 1 AND 2, TURBINE AND AUXILIARIES 245-704-5683

GENERAL ARRANGEMENT 245-D-5954

TRANSVERSE SECTION THROUGH UNIT 1 245-D-5948

R el ea se d

Perimeter of PRV draft tube @ top of work platform

Perimeter of PRV draft tube

@ ℄ of manway and elevation of anchors

Anchor location

(6 places)

Manway

PLAN VIEW FOR PUCK ANGULAR LOCATION

SCALE: 1" = 1'-0"

1'-8"

7 5/8"

3'-0 7/8"

3'-0 7/8"

7 5/8"

3'-0 7/8"

3'-0 7/8"

4'-6"

Top of Work

Platform

7'-5"

5 7/8"

Top of Energy

Absorber Bowl

2'-10 1/8"

Center of Anchors

ELEVATION PLATFORMS IN PRV DRAFT TUBE

SCALE: 1" = 1'-0"

El. 5450.72

Access

Platform

Frame Wing (FW)

Frame Wing (FW)

Opposite hand

End Support (ES)

Center Support (CS)

PLAN VIEW - WORK PLATFORM

SCALE: 1" = 1'-0"

PLAN VIEW - TREAD PLATE LAYOUT

SCALE: 1" = 1'-0"

Mid Plate (MP)

Wing Plate (WP)

Wing Plate (WP)

Opposite hand

Mid Plate (MP)

Opposite hand

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

A Y S

T H

I N

K

S A F E T Y

SHEET

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WORK PLATFORM

PLANS

BILLINGS, MT

245-600-60055

2019-09-30

NOTES

1. This access platform intended live load is two craftsman, 250 lbs.

each concentrated load and a uniform load of 20 pounds per square foot. The platform was designed for four (4) times the intended live load. Design in accordance with ADM 2015-ASD and custom factored loads.

2. Bolts 5/8" Ø, aluminum ally 2024-T4.

3. Welding:

a. Aluminum welding by TIG, with 4043 filler material in accordance with AWS D1.2. Minimum fillet weld 3/16" unless noted otherwise.

4. Materials:

a. Aluminum - alloy 6061-T6

PARTS LIST

PART PART NUMBER Material NO. SIZE LENGTH DESCRIPTION LOCATION

FW FRAME WING

FW-7 Aluminum Tube 2

3"x2"x1/4" 6'-1"

FW-6 Aluminum Plate 2

3/8"x1 1/2" 0'-3 1/4"

FW-5a Aluminum Plate 12

3/8"x2 1/2" 0'-2 1/2"

FW-5b Aluminum Plate 6 3/8"x2"

0'-5"

FW-4 Aluminum Plate 6 3/4"x2-1/2" 0'-3 1/4"

FW-1 Aluminum Tube 2

3"x2"x1/4" 2'-6 1/2"

FW-2 Aluminum Tube 2

3"x2"x1/4" 1'-4 3/4"

FW-3 Aluminum Tube 2

3"x2"x1/4" 3'-7 1/4"

CS CENTER SUPPORT

Aluminum Tube 1 3"x3"x1/4" 4'-5 1/4"

ES END SUPPORT

Aluminum Tube 2

3"x3"x1/4"

2'-7"

WP WING PLATE

Aluminum Tread Plate2

3/8"x18 3/4" 6'-1 1/4"

Aluminum Plate 2

3/8"x4" 0'-5 1/2"

Aluminum Angle

3"x3"x3/8"

0'-3" Retention Clip

Aluminum Bolt 4 5/8"Ø

0'-4"

Retention Clip

Aluminum Nut 8 5/8"Ø Retention Clip

Aluminum Flat Washer2

For 5/8" Ø bolt

MP MID PLATE

Aluminum Tread Plate2

3/8"x16 3/4" 6'-6 3/4"

Aluminum Plate 2

3/8"x4" 1'-4 3/4"

LOOSE ITEMS

BOLTS Aluminum 6061 8 5/8" Ø

0'-5"

Bolt, 2-flat washers, nut

FW to ES

BOLTS Aluminum 6061 4 5/8" Ø

0'-5"

Bolt, 2-flat washers, nut

ES to CS

MACHINE

SCREWS

Aluminum 2024 24 #10x24x2

Flathead machine screw

Tread Plate to

Support

REFERENCE DRAWINGS

WORK PLATFORM 245-600-60056

ACCESS PLATFORM 245-600-60057

ANCHOR SECTION AND DETAILS 245-600-60050

DISCHARGE LINER FOR PRESSURE

REGULATOR A-34383-07-02b

20X24 MANDOOR & COVER A-34383-07-03

CROSS SECTION ASSEMBLY

45"X27" PRESSURE REGULATOR A-3438348-01g

PRESSURE REGULATOR SECTION 245-704-5685

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FRAME WING

ONE THUS - ONE OPPOSITE HAND

SCALE: 1" = 1'-0"

Typical lug weld

5/16

1 1/4"

FW-6

Plate 3 1/4"

2 1/4"

FW-5

11 1/4"

6'-1"

2'-6" 3'-7"

Typical tube side walls

FW-1

FW-2

FW-3

Typical tube top

& bottom faces

(3/16)

60°

1 3/4"

3"

FW-4 FW-4

1/2"

1 5/8"

FW-7

4'-9 3/8"

1"

WING PLATE (WP)

ONE THUS - ONE OPPOSITE HAND

SCALE: 1" = 1'-0"

1'-6 3/4"

5 1/2"

9 3/4"

Approx.

1'-0"

3"

2'-2 3/4"

3'-0 1/4"

1'-5 5/8"

2'-4 3/4"

R3'-9"

1 1/2"

1 1/8"

2"

Approx.

1'-0"

3"

2 1/8"

1 1/2"

R4'-2 1/2"

2'-7 3/4"

See Detail 1

See Detail 2

R1 1/2"

6'-1 1/4"

See Detail 1

R1 1/2"

B

1'-3 1/2"

9 3/4"

MID PLATE (MP)

ONE THUS - ONE OPPOSITE HAND

SCALE: 1" = 1'-0"

1'-4 3/4"

6'-6 3/4"

Approx.

1'-0"

R1 1/2"

9 3/4"

Approx.

1'-3"

1 1/2"

3 1/4"

1"

Approx.

1'-0"

6'-1 1/2"

2'-6 1/4"

1/4"

R2'-6 1/4"

Approx.

1'-3"

See Detail 1

See Detail 1

B

MP-1

2-6

2-6

1/4

MP or WP

MP-1 or WP-1

SECTION B-B

SCALE: 1" = 1'-0"

60°

1/4

Staggered

FW-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

2'-6 1/2"

1 1/4"

2"

3 1/4"

FW-3

TWO THUS

SCALE: 1 1/2" = 1'-0"

3'-7 1/4"

5"

3/4"

2"

3"

FW-2

TWO THUS

SCALE: 1 1/2" = 1'-0"

FW-4

1"

1'-4 3/4"

1 1/2"

FW-6

TWO THUS

SCALE: 1 1/2" = 1'-0"

1 1/2"

3 1/4"

FW-5

SIX THUS

SCALE: 1 1/2" = 1'-0"

2 1/2"

1"

1/2"

2"

1 1/2"

℄11/16" Ø Holes

FW-5a

3 1/4"

5"

1/2"

1/2"

FW-5b

2"

R1 1/4"

3 1/4"

Ø3/4"

FW-4

SIX THUS

SCALE: 1 1/2" = 1'-0"

2 1/2"

END SUPPORT (ES)

TWO THUS

SCALE: 1 1/2" = 1'-0"

1"

2'-7"

1"

1'-3 1/2"

1 5/8"

1 1/2"

℄11/16 Ø Holes

FW-5

CENTER SUPPORT (CS)

ONE THUS

SCALE: 1 1/2" = 1'-0"

4'-5 1/4"

1"1"

℄11/16 Ø Holes

5/8"Ø Bolt with 2-nuts and 2-flat washers

1 1/2"

Alum. angle 3x3x3/8" x

3" long with 11/16" Ø hole

Aluminum tread plate

2"

1 3/4"

DETAIL 2

PLATFORM RETENTION CLIP

4-PLACES

SCALE: 1 1/2" = 1'-0"

3/8"

2"

In tread plate, drill and countersink for

2-#10-24 flathead machine screws. In tube, drill and tap for #10-24 machine screws.

DETAIL 1

PLATE TO TUBE ATTACHMENT

12-PLACES

SCALE: 1 1/2" = 1'-0"

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

A Y S

T H

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S A F E T Y

SHEET

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WORK PLATFORM

SECTIONS AND DETAILS

BILLINGS, MT

245-600-60056

2019-09-30

NOTE

See Dwg 245-600-60055 for Notes and Reference Drawings.

R el ea

END VIEW ACCESS PLATFORM IN DRAFT TUBE

SCALE: 1 1/2" = 1'-0"

Aluminum grate

(TS) Top Support

Bottom Support (BS) End support

Inside Strut (IS)

Outside Strut (OS)

ELEVATION OF ACCESS PLATFORM

SCALE: 1 1/2" = 1'-0"

3"

6 3/4"

11"

1'-0 1/2"

1 1/2"

5"

9"

5 1/4"

4 15/16"

TS-1 - PLATE DIMENSIONS

TWO THUS

SCALE: 1 1/2" = 1'-0"

TS-1

1'-6 15/16"

1'-7 11/16"

2 1/2" 2 1/4"

TS-1

5"

1 3/4"

℄15/16"Ø holes

1/4

1/4

1/4

TS-2

TOP SUPPORT (TS)

ONE THUS

SCALE: 1 1/2" = 1'-0"

3 1/2"

1"

9"

1"

1 1/2"

℄11/16" Ø holes

BS-1

ONE THUS

SCALE: 1 1/2" = 1'-0"

BS-1

9"

3"

2 9/16"

2 3/4"

1'-7 11/16"

5"

℄15/16" Ø holes

1/4

BS-2

BOTTOM SUPPORT (BS)

ONE THUS

SCALE: 1 1/2" = 1'-0"

3"

1"

1 1/2"

3 1/4"

3 1/2"

6 3/4"

1 1/2"

℄11/16" Ø holes

LFA-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

1 1/2"

3"

10 3/4"

3 1/4"

7 1/2"

1"

1 1/2"

℄11/16" Ø holes

LFA-2

TWO THUS

SCALE: 1 1/2" = 1'-0"

2'-0 3/4"

1 1/2"

3'-3 1/2"

1 1/2"

1 1/4"

5'-8 1/2"

4 1/8"2 1/2"

3"

LFA-1

LFA-2

℄11/16" Ø holes

℄11/16" Ø holes

3"

LFA-3

(3/16)

60°

(3/16)

60°

LOWER FRAME ANGLE (LFA)

ONE THUS - ONE OPPOSITE HAND

SCALE: 1 1/2" = 1'-0"

8"

4"

1"

℄11/16" Ø holes

1 1/4"

1 1/2"

WES-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

1'-10 1/4"

3'-5 3/4"

1" 1"

1 1/2"1 1/2"

1"

℄11/16" Ø holes

TWO THUS OUTSIDE (OS)

TWO THUS INSIDE (IS)

WALKWAY STRUTS

SCALE: 1 1/2" = 1'-0"

WES-1

1'-7 3/4"

WES-2

WALKWAY END SUPPORT (WES)

ONE THUS

SCALE: 1 1/2" = 1'-0"

1 1/2"

1"

1 1/2"

1 1/2"

1"

6 3/4"

6 1/16"

℄11/16" Ø holes

℄11/16" Ø holes

TS-1 - HOLE LOCATIONS

TWO THUS

SCALE: 1 1/2" = 1'-0"

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

A Y S

T H

I N

K

S A F E T Y

SHEET

D

C

B

A

D

C

B

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B U

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Managing

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ACCESS PLATFORM

PLANS, SECTIONS, AND

DETAILS

BILLINGS, MT

245-600-60057

2019-09-30

NOTES

PARTS LIST

PART PART NUMBER Material NO. SIZE LENGTH DESCRIPTION LOCATION

TS TOP SUPPORT

TS-2

Steel Angle

5"x3"x3/8"

1'-7"

TS-1 Steel Plate 2

3/8"x6 3/4" 1'-0 1/2"

BS BOTTOM SUPPORT

BS-2

Steel Angle

5"x3"x3/8" 1'-7 3/4"

BS-1 Steel Plate 2

3/8"x3 1/2" 0'-9"

LFA LOWER FRAME ANGLE

LFA-3

Aluminum Angle

4"x4"x3/8" 5'-8 1/2"

LFA-1 Aluminum Plate 2 3/8"x3" 0'-6 3/4"

LFA-2 Aluminum Plate 2 3/8"x3" 0'-10 3/4"

WES WALWAY END SUPPORT

WES-2

Aluminum Angle

4"x4"x3/8" 1'-7 3/4"

WES-1 Aluminum Plate 2

3/8"x4"

0'-8"

IS INTERIOR STRUT

IS Aluminum Plate 2

1/4"x2" 3'-5 3/4"

OS INTERIOR STRUT

OS Aluminum Plate 2

1/4"x2" 1'-10 1/4"

GRATE

3/4x3/16

Aluminum 1

35 13/16" Width

3/4x3/16

Aluminum 1

23 15/16" Width

LOOSE ITEMS BOLTS SAE J429 Grade 2 4 7/8" Ø

0'-1 1/2"

Bolt and flat washer

BS & TS to

Manway frame

BOLTS Aluminum 8 5/8" Ø

0'-1 3/4"

Bolt, 2-flat washers, nut

OS & IS to TS

& LFA

BOLTS Aluminum 4 5/8" Ø

0'-1 3/4"

Bolt, 2-flat washers, nut

LS to BS

BOLTS Aluminum 4 5/8" Ø 0'-1 3/4"

Bolt, 2-flat washers, nut

LS toWES

1. This platform live load was designed one craftsman on the grate and 30 pounds per square foot. Designs were done in accordance with AISC-LRFD, ADM-LRFD, and ASCE-7.

2. The aluminum grate to be rectangular bar swaged locked, 19-SR-4, with bearing bars 3/4" x 3/16" at 1 3/16" on center, cross bars at

4" on center. The bearing bars to span 1'-6 1/4" and to be secured to beams with clips similar to "Struct-fast" grating clips, one each panel corner.

3. With exception to bolts used to connect top and bottom frames to manway which are 7/8" Ø steel SAE Grade 2 bolts, all bolts are

5/8" Ø, aluminum ASTM 2024-T4 alloy.

4. Welding:

a. Aluminum welding by TIG, with 4043 filler material in accordance with AWS D 1.2. Minimum fillet weld 3/16” unless noted otherwise.

b. Steel welding E70 electrode in accordance with AWS D 1.1.

Minimum fillet weld 3/16” unless noted otherwise.

5. Materials:

a. Steel - ASTM A36

b. Aluminum - alloy 6061-T6.

REFERENCE DRAWING

WORK PLATFORM UNITS 1&2 MAIN

DRAFT TUBE 245-600-60054

WORK PLATFORM UNITS 1&2 PRV

DRAFT TUBE 245-600-60055

PLATE STEEL DRAFT

TUBE LINER A34382-07-04

UPPER DRAFT TUBE LINER A34382-07-05

20” X 24” MANDOOR & FRAME A34382-07-06

20” X 24” MANDOOR & COVER A34383-07-03

DISCHARGE LINER FOR

PRESSURE REGULATOR A34383-07-02b

GENERAL ARRANGEMENT TRANSVERSE SECTION

THROUGH ℄ UNIT 1 AND

℄ PRESSURE REGULATOR 1 245-D-5948

PLAN -TURBINE AND PUMP

GALLERY - EL. 5459.75 245-D-5951

LONGITUDINAL SECTION

THRU ℄ UNITS 245-D-5954

UNITS 1 AND 2, TURBINES AND AUXILIARIES

PROCEDURE FOR ERECTING AND EMBEDDING

TURBINE AND PRESSURE

REGULATOR - PLAN 245-704-56983

UNITS 1 AND 2, TURBINES AND AUXILIARIES

PROCEDURE FOR ERECTING AND EMBEDDING

TURBINE -

SECTIONS AND DETAILS 245-704-56984

UNITS 1 AND 2, TURBINES AND AUXILIARIES

PROCEDURE FOR ERECTING AND EMBEDDING

PRESSURE REGULATOR - SECTION 245-704-56985

R el ea

5'-2 7/8"

1'-10"

See Detail 2

9"

Typ.

9"

Typ.

3 1/2"

Typ.

10 3/4"

11 3/8"

R2'-9 3/8"

WING PLATE (WP)

MAKE TWO THUS

SCALE: 1" = 1'-0"

See Detail 1

See Detail 1

R1 3/4"

Typ.

10 3/4"

Typ.

Mid Plate (MP)

Wing

Plate (WP)

PLAN VIEW WORK PLATFORM

SCALE: 1" = 1'-0"

Wing

Plate (WP)

See Detail 1

See Detail 1

1'-9 3/4"

5'-3 1/4"

R2'-9 3/8"

Typ.

5'-6 3/4"

3 1/4" Typ.

3 1/2" Typ.

R1 3/4"

Typ.

Approx.

11"

Typ.

MID PLATE (MP)

MAKE ONE THUS

SCALE: 1" = 1'-0"

10 3/4"

Typ.

FRAME WING (FW)

MAKE TWO THUS

SCALE: 1 1/2" = 1'-0"

2"

5/16

FW-4

FW-5 Typ.

2"

11 7/8" 1'-10 1/8" 11 7/8"

4'-2 7/8"

3 1/8" 3 1/8"

FW-1

FW-2

(3/16)

Typical tube side faces

(3/16)

60°

60°

Typical tube top and bottom

Typ.

FW-6

2 1/2"

Typ. FW-5 to

FW-6

1/2"

1 3/4"

3'-2 3/8"

1" 1"

3"

1 1/2"

℄11/16" Ø holes

CENTER SUPPORT (CS)

MAKE FOUR THUS

SCALE: 1 1/2" = 1'-0"

FW-1

MAKE FOUR THUS

SCALE: 1 1/2" = 1'-0"

1'-11 1/4"

4 5/8" 7/8"

2"

FW-2

MAKE TWO THUS

SCALE: 1 1/2" = 1'-0"

1"

11"

3"

2 1/2"

FW-4

5/16

2 1/2"

2"

R1 1/4"

FW-4

MAKE SIX THUS

SCALE: 1 1/2" = 1'-0"

Ø3/4"

3 1/4"

2"

1 3/4"

1 1/2"

Alum. angle 3 x 3 x 3/8

3" long w/ 11/16" Ø hole

5/8" Ø bolt with

2-nuts and 2- flat washers

Aluminum Tread Plate

DETAIL 2

PLATFORM RETENTION CLIP

4 PLACES

SCALE: 3" = 1'-0"

3/16

2 1/2"

2"

1/2"

1"

1"

FW-5a

℄11/16" Ø holes

2 1/4"

4"

1/2"

1/2"

FW-5b

FW-5

MAKE EIGHT THUS

SCALE: 1 1/2" = 1'-0"

1/2"

In tread plate drill and countersink for 2 - 5/16-18 Flathead machine steel screws, In tube, drill and tape for 5/16-18 machine screws.

DETAIL 1

PLATE TO TUBE ATTACHMENT

8 PLACES

SCALE: 3" = 1'-0"

2"

Frame Wing (FW)

Frame Wing (FW)

Center

Support (CS)

PLAN VIEW WORK PLATFORM SUPPORT

SCALE: 1" = 1'-0"

R2'-6 1/4"

Radius of draft tube

@ anchor location

Center of

Manway

PLAN VIEW WORK PLATFORM ANCHOR LOCATION

SCALE: 1" = 1'-0"

Anchor location

(6 places)

1'-6"

1'-1 1/2"

2'-0 1/8"

2'-0 1/8"

1'-1 1/2"

2'-0 1/8"

2'-0 1/8"

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

A Y S

T H

I N

K

S A F E T Y

SHEET

D

C

B

A

D

C

B

A

B U

R E

R E C L A M

A T I O

N

U S

D

E P A R T M

E N

T

O

F

T H

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I N

T E R I O

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Managing

LAR M TA IOCE N

W in theWa estter C

S T E M

A u t o C s

C

L E N

A M

E

R D

D

W G

L A S T

S A V

T E

L A S T

S A V

G B O

L O

R A D

O B

O M

P S O

N

P R O

J E C T

F L A T I R O

N

P O

W E R P L A N

T

U N

I T

D

R A F T

T U

B E

WORK PLATFORM

PLANS, SECTIONS, AND

DETAILS

BILLINGS, MT

245-600-60058

2019-09-30

NOTES

1. This platform intended live load is two craftsman, 250 lbs. each concentrated load and a uniform load of 20 pounds per square foot. The platform was designed for four (4) times the intended live load. Designed in accordance with ADM 2015-ASD and custom factored loads.

2. Bolts 5/8" Ø, aluminum 2024-T4.

3. Welding:

a. Aluminum welding by TIG, with 4043 filler material in accordance with AWS D1.2. Minimum fillet weld 3/16" unless noted otherwise.

4. Materials:

a. Aluminum - alloy 6061-T6.

PARTS LIST

PART PART NUMBER Material NO. SIZE LENGTH DESCRIPTION LOCATION

FW FRAME WING

FW-6 Aluminum Tube 2

3"x2"x1/4" 4'-2 7/8"

FW-1 Aluminum Tube 4 3"x2"x1/4" 1'-11 1/4"

FW-2 Aluminum Tube 2

3"x2"x1/4" 0'-11"

FW-4 Aluminum Plate 6 3/4"x2 1/2" 0'-3 1/4"

FW-5a Aluminum Plate 16 3/8"x2 1/2" 0'-2 1/2"

FW-5b Aluminum Plate 8 3/8"x2"

0'-4"

CS CENTER SUPPORT

Aluminum Tube 4 3"X2"X1/4" 3'-2 3/8"

WP WING PLATE

Aluminum Tread Plate2

3/8"x22" 5'-2 7/8"

Aluminum Angle

3"x3"x3/8"

0'-3"

Retention Clip

Aluminum Bolt 4

5/8" Øx

0'-4"

Retention Clip

Aluminum Nut 8

5/8"Ø

0'-5"

Retention Clip

Aluminum Flat Washer8 for 5/8"Ø Bolt

0'-6"

Retention Clip

MP MID PLATE

Aluminum Tread Plate1

3/8"x21 3/4"

0'-7"

LOOSE ITEMS

BOLTS Aluminum 16 5/8" Ø x 0'-1 3/4"

Bolt, 2-flat washers, nut

FW to CS

MACHINE

SCREWS

Steel 16 5/16-18x

0'-1" Flat head

Plates to

Supports

REFERENCE DRAWING

ACCESS PLATFORM -

PLANS, SECTIONS, AND DETAILS 245-600-60059

ANCHOR SECTION AND DETAILS 245-600-60060

SECTIONS FOR ST PL TUBE LINER 02-401-097

ST PL DRAFT TUBE LINER 02-501-533

UNIT 3 - TURBINES AND AUXILIARIES 245-704-5773

R el ea

℄ Distributor El. 5453.00

Top of concrete step

5'-9 5/8"

Anchor elevation

Top of work platform

Access platform

ELEVATION OF PLATFORMS IN DRAFT TUBE

SCALE: 1" = 1'-0"

11 1/8"

1'-4 3/8"

SIDE VIEW OF ACCESS PLATFORM

SCALE: 1 1/2" = 1'-0"

Top Support (TS)

Inboard Strut (IS)

Outboard

Strut (OS)

Walkway End Support (WES)Bottom Support (BS)

Lower Frame Angle (LFA)

Grate

LOWER FRAME ANGLE (LFA)

ONE THUS - ONE OPPOSITE HAND

SCALE: 1 1/2" = 1'-0"

5'-6"

2 1/2"

1 1/2"

3 3/4"

1'-1"

3'-0 1/4"

1'-0" 1"

LFA-1

LFA-2

2"

1 1/2"

2 1/2"

1"

11 7/16

3 3/4

(3/16)

60°

(3/16)

60°

LFA-3

END VIEW

SCALE: 1 1/2" = 1'-0"

Trim this area to avoid fouling existing

3/4" x 1 1/2" x 3" lug

Steel angle 4" x 4" x 3/8" w/ 2~13/16" Ø holes (TS)

Steel angle 4" x 4" x 3/8" w/ 2~13/16" Ø holes (BS)

Work Platform frame shown for clearances during installation

TOP SUPPORT (TS)

ONE THUS

SCALE: 1 1/2" = 1'-0"

10 1/8"

10 1/8"

2 1/4"

1'-5"

2" 2"

℄13/16" Ø Holes

TS-1 TS-1

TS-2

2 thus for

Inboard Struts (IS)

2 thus for

Outboard Struts (OS)

STRUTS (IS and OS)

SCALE: 1 1/2" = 1'-0"

℄11/16" Ø Holes

2'-10"

1"

1 1/2" 1 1/2"

1"

1'-1 7/8"

1"

BS-1

BS-1

1'-5 3/4"

1'-0 7/8"2 3/8"

Trim this area to avoid fouling existing 3/4" x 1 1/2" x 3" lug

9"

2 3/4"

℄13/16" Ø Holes

BOTTOM SUPPORT (BS)

ONE THUS

SCALE: 1 1/2" = 1'-0"

BS-2

See detail 1

Typ.

WALKWAY END SUPPORT (WES)

ONE THUS

SCALE: 1 1/2" = 1'-0"

WES-1

1'-5 3/4"

5"

WES-1

WES-2

Typ.

WES-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

7"

2"

1"

1"

1 1/2"

℄11/16" Ø Holes

9"

4"

1"

1"

2"

1"

1 1/2"

℄11/16" Ø Holes

BS-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

TS-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

3"

5"

3 3/8"

6 1/8"

3"

11 3/8"

1 1/4"

10 1/8"

1 1/4"

3 1/4"

1 1/2"

1"

1 1/2"

1 1/2"

1"

℄11/16" Ø Holes

HOLE LOCATIONS PLATE DIMENSIONS

5 3/8"

1 1/2"

℄11/16" Ø Holes

LFA-1

TWO THUS

SCALE: 1 1/2" = 1'-0"

LFA-2

TWO THUS

SCALE: 1 1/2" = 1'-0"

6 3/8"

1 1/2"

1"

3 7/8"

3"

1 1/2"

3 1/2"

2 7/8"

1'-1 5/8"

1"

1 1/2"

3"

1 1/2"

℄11/16" Ø Holes

2"

3/4"

R1/2"

BS-1

Lower left leg of BS-2

DETAIL 1

MAXIMUM AREA TO BE REMOVED

FROM BS-1 AND BS-2

SCALE: 3" = 1'-0"

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

A Y S

T H

I N

K

S A F E T Y

SHEET

D

C

B

A

D

C

B

A

B U

R E

R E C L A M

A T I O

N

U S

D

E P A R T M

E N

T

O

F

T H

E

I N

T E R I O

R

Managing

LAR M TA IOCE N

W in theWa estter C

S T E M

A u t o C s

C

L E N

A M

E

R D

D

W G

L A S T

S A V

T E

L A S T

S A V

C W

A L

L O

R A D

O B

O M

P S O

N

P R O

J E C T

F L A T I R O

N

P O

W E R P L A N

T

U N

I T

D

R A F T

T U

B E

ACCESS PLATFORM

PLANS, SECTIONS, AND

DETAILS

BILLINGS, MT

245-600-60059

2019-09-30

NOTES

1. The access platform live load was designed as one craftsman on the grate and 30 pounds per square foot. Designed in accordance with ADM 2015, AISC 360-16 LRFD, and ASCE7.

2. The aluminum grate to be rectangular bar swaged locked, 19-SR-4, with bearing bars 3/4" x 3/16" at 1 3/16" on center, cross bars at 4" on center. The bearing bars to span 1'-4 1/2" and to be secured to beams with clips similar to "Struct-fast" grating clips, one each panel corner.

3. With exception to bolts used to connect top and bottom frames to manway frame which are 3/4" Ø steel SAE Grade 2 bolts, all bolts are 5/8" Ø, aluminum ASTM 2024-T4.

4. Welding:

a. Aluminum welding by TIG, with 4043 filler material in accordance with AWS D1.2. Minimum fillet weld 3/16" unless noted otherwise.

b. Steel welding E 70 electrode in accordance with AWS D1.1.

Minimum fillet weld 3/16" unless noted otherwise.

5. Materials:

a. Steel - ASTM A36

b. Aluminum - alloy 6061-T6

PARTS LIST

PART PART NUMBER Material NO. SIZE LENGTH DESCRIPTION LOCATION

TS TOP SUPPORT

TS-2

Steel Angle

4"x4"x3/8"

1'-5"

TS-1 Steel Plate 2

3/8"x6 1/8" 0'-11 1/8"

BS BOTTOM SUPPORT

BS-2

Steel Angle

4"x4"x3/8" 1'-5 3/4"

BS-1 Steel Plate 2

3/8"x4" 0'-9"

LFA LOWER FRAME ANGLE

LAF-3

Aluminum Angle

5"x3"x3/8" 5'-6"

LFA-1 Aluminum Plate 2

3/8"x3" 0'-6 3/8"

LFA-2 Aluminum Plate 2

3/8"x3" 1'-1 5/8"

WES WALKWAY END SUPPORT

WES-2

Aluminum Angle

2"x2"x3/8" 1'-5 3/4"

WES-1 Aluminum Plate 2

3/8"x2" 0'-7"

IS INTERIOR STRUT

IS Aluminum Plate 2

1/4"x2" 2'-10"

OS OUTBOARD STRUT

OS Aluminum Plate 2

1/4"x2" 1'-1 7/8"

GRATE

3/4 x 3/16

Aluminum 1

35 13/16" Width

3/4 x 3/16

Aluminum 2 18" Width

LOOSE ITEMS

BOLTS SAE J429 Grade 2 4 3/4" Ø x 1 3/4"

Bolt and flat washer

BS & TS to

Manway Frame

BOLTS Aluminum 2024-T4 16 5/8" Ø x 1 3/4"

Bolt, 2-flat washers, nut

OS & IS to TS

& LFA

BOLTS Aluminum 2024-T4 8 5/8" Ø x 1 3/4"

Bolt, 2-flat washers, nut

LFA to BS

BOLTS Aluminum 2024-T4 4 5/8" Ø x 1 3/4"

Bolt, 2-flat washers, nut

LFA to WES

REFERENCE DRAWING

WORK PLATFORM -

PLANS, SECTIONS, AND DETAILS 245-600-60058

ANCHOR SECTION AND DETAILS 245-600-60060

MANDOOR DETAILS 02-401-097

ST PL DRAFT TUBE LINER 02-501-533

UNIT 3 - TURBINES AND AUXILIARIES 245-704-5773

R el ea

3 4

4 3

P

I

8-

C

P

I

C

G

8-8

C

C

G

I

P

1 2

This end used for Unit 3 work Platform

This end used for Units 1 & 2

Main and PRV work platforms

Crosby HR-1000

Stock # 1068018

Heavy Lift Swivel Hoist Ring

PIC

QT

CG

Crosby HG-228

Stock # 1032670

Jaw & Jaw Turnbuckle

3/4 x 6

Crosby A-1337

Stock # 1015113

10 Alloy Connecting Link

Crosby G-2130/S-2130

Stock # 1019472

Bolt type Anchor Shacke

Crosby Spectrum 10

Stock # 273729

5/16 " Grade 100 Alloy Chain

3'-4"

For Units 1 & 2

Main and PRV Draft Tubes

2'-6"

For Unit 3

Main Draft Tube

Crosby G-2130/S-2130

Stock # 1019472

Bolt type Anchor Shacke

CHAIN DETAIL

SCALE: 3" = 1'-0"

Existing 3/4" plate

57.8125 ID

New Anchor

NEW ANCHOR - UNITS 1 & 2, MAIN DRAFT TUBE

SCALE: 6" = 1'-0"

SEAL WELD

60°

(1/2)

3/16

1/2"

13/16"

1 1/4"

30°0'0"

3"

Drill and tap for

5/8" -11 bolt

316L Stainless steel

NEW ANCHOR DETAIL

SCALE: 6" = 1'-0"

Existing 5/8" plate

72" ID

New Anchor

Existing Concrete

NEW ANCHOR - UNITS 1 & 2, PRV DRAFT TUBE

SCALE: 6" = 1'-0"

60°

(1/2)

SEAL WELD

Existing 1/2" plate

60.5" ID

New Anchor

Existing Concrete

NEW ANCHOR - UNIT 3, MAIN DRAFT TUBE

SCALE: 6" = 1'-0"

60°

(1/2)

SEAL WELD

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

GBONE

CWALSH

TLANNEN

Bone, Gary W P.E.

Skinner, Norris D (Dave)

Technical Services Supervisor

A L W

A Y S

T H

I N

K

S A F E T Y

SHEET

D

C

B

A

D

C

B

A

B U

R E

R E C L A M

A T I O

N

U S

D

E P A R T M

E N

T

O

F

T H

E

I N

T E R I O

R

Managing

LAR M TA IOCE N

W in theWa estter C

S T E M

A u t o C

S

L M

S

T E C H

C

L E N

A M

E

R D

D

W G

L A S T

S A V

T E

L A S T

S A V

C W

A L

L O

R A D

O B

O M

P S O

N

P R O

J E C T

F L A T I R O

N

P O

W E R P L A N

T

U N

I T S

A N

D

M

A

R A F T

T U

B E S

A N

D

U N

I T S

A N

D

P R V

D

R A F T

T U

B E S

WORK PLATFORM

ANCHORS

SECTION AND DETAILS

BILLINGS, MT

245-600-60060

2019-09-30

Use of the Anchors

Anchors will be welded to the liner to provide support for the new work platforms. Heavy Lift Swivel Hoist Rings will be installed into the anchor for use in supporting the work platform. A set screw will be installed in the anchor supports when the units are in service. The access platforms will be used to change the set screws and heavy lift swivel hoist rings, and to install the work platforms.

Fabrication

The anchors will be fabricated from 316L Stainless Steel and in accordance with this drawing. The 5/8” Ø - 11 threaded bore is located in the center of the anchor drilled to 13/16“ deep leaving approximately ¼ inch of stainless steel material backing.

Installation Procedure

Location of New Anchors

The elevation and angular location of the new anchors are shown on drawings;

Units 1 & 2 Main Draft Tube Drawing 245-600-60054

Unit 3 Main Draft TubeDrawing 245-600-60058 & 60059

Units 1 & 2 PRV Draft Tube Drawing 245-600-60055

Center punch the anchor location.

Drill a pilot hole in the liner. The pilot drill bite size to be the same diameter as the centering bit of the whole saw.

When concrete is behind the anchor location;

Drill behind the pilot hole with a masonry bit to make room for the hole saw pilot bit and vacuum the concrete debris before continuing.

When no concrete is behind the anchor location proceed to next step.

Hole saw the draft tube steel to the size to accept the anchor not to exceed 3 diameter.

When concrete is behind the anchor location;

Remove concrete behind the hole to allow room for the anchor diameter and depth to fit flush with the interior face of liner plate.

When no concrete is behind the anchor location proceed to next step.

Remove coating to a 15 inch diameter circle around the center of the hole.

Chamfer the inner diameter at approximately 30° with a minimum depth of ½ inch.

Insert fabricated anchor with threaded bore facing the center of the tube. Flush the face of the anchor to the diameter of the tube. Tack weld in place. Note, longer tacks may be necessary to prevent weld cracking or preheating to 150° may reduce cracking.

Weld the anchor in place with 309 stainless weld filler, TIG welding. Remove all defective weld materials including cracked welds and re-weld the effected area.

Grind welds flush. Do not grind the stainless steel anchor face. The surface of the anchor must remain flat to properly engage the Heavy Lift Swivel Hoist

Rings' base.

PARTS LIST

PART PART NUMBER Material NO. SIZE LENGTH

LOOSE ITEMS

ANCHOR Stainless Steel 30 3"Ø

0'-1 1/4"

SET SCREW Stainless Steel Grade 31630 5/8"Ø 0'-0 3/4"

WORK PLATFORM

TIE-OFFS

Lift Swivel Hoist Ring

Crosby HG-228

Stock #1032670

Jaw & Jaw Turnbuckle

Crosby HG-228

Stock # 1032670

Connecting Link

Crosby A-1337

Stock # 1015113

5/16 " Grade 100 Alloy Chain

Crosby Spectrum 10

Stock # 273729

6 0'-3"

5/16 " Grade 100 Alloy Chain

Crosby Spectrum 10

Stock # 273729

6 1'-0"

Anchor Shackel

Crosby G2130

Stock # 1019472

R el ea