296-600-60155-RD-1.PDF

Powerplant roof

Platform base

Platform

1' -0

1'

-7

Equipment curb

Ladder5'-6"

LOOKING SOUTH

1/2" = 1''-0"

Top of Equipment curb to bottom of

1/4 x 2" plate=11"

4'

Equipment curb

LOOKING EAST OR WEST

1/2" = 1''-0"

2 9/16"

1/

2"

3"

℄ Ø 7/8" hole

B

SECTIONA 3" = 1''-0"

2' -1

/4

1' -9

1' -9

/8

/8

3/

4"

11" 1'-4"

8"

2' -8

/4

4"

3/ 4"

A

LADDER FOR PLATFORM

3/4" = 1''-0"

℄ Ø 7/16" Hole through pipe for Ø 5/16" x 2 1/2" machine bolts

3/16 Typical pipe to pipe tee connection

3/16 Typical pipe to pipe straight connection

Ø 1 1/4" Sch. 40 pipe typical ladder1'

-1

/8

1' -8

/4

1' -1

/8

2'-9"

5'-6"

1' -6

/8

1' -4

/8

1"

℄ of Ø 7/16 hole centered in tube for Ø 5/16" machine bolt 3" long each platform leg.

HSS 2 1/2 x 2 1/2 x 3/16

Fasten grating to frame with McNichols type CB galvanized saddle clips (or approved equal) with Ø 1/4” self-tapping screw 3” long similar to Buildex Teks 3 (or approved equal) with Climaseal finish. Place clips on four corners of the grate panel.

℄ Ø 5/8" hole for grounding connection furnish 1 - Ø 1/2 x 1 1/2" machine bolt.

℄ Ø 7/8" hole for ladder connection furnish 2 - Ø 3/4 x 1 1/2" machine bolts.

Span of serrated galvanized grate 1 1/2 x 3/16 bearing bars at 1 3/16 on center, cross bars at 4 on center. C

D

PLATFORM

3/4" = 1''-0"

Vent holes per galvanize's recommendations See note #2.

℄ Ø 5/8" hole for grounding connection

1/

2"Grate

3 x 3 x 1/4 angle, typical frame

SECTION (WITHOUT MID ANGLE)C 3" = 1''-0"

LADDER BASES

3" = 1''-0"

TWO PER LADDER

1/4 " x 2" plate with 2~Ø 3/8 " holes for 2 ~ Ø 1/4" Tapcon Anchors 2" long.

1" Typ.

6"

4 1/2"

1"

Ø 3/4" Pipe with Ø 7/16" holes, evenly spaced in pipe, thru pipe

7- Ø

/1

6" h ol es c en te re d in p ip e

1"

3"

3/16

Angle 6 x 4 x 3/8 cut 6" leg

5 7/8"

2 1/8"

13/16 3/8" x 2" plate

SECTIONB 3" = 1''-0"

Angle 3 x 3 x 1/4

3/16

SECTION (WITHOUT HOLE)C 3" = 1''-0"

Grate3 x 3 x 1/4 angle

3/16

DETAIL1 3" = 1''-0"

1 1/2" ℄ HSS legs

Chamfer HHS tops to make tube sides flush with angle vertical inside leg.

3/16 2 2 1/2 Typical 2 sides of each leg

Typical 2 sides of each leg

℄ Ø 7/8" hole for ladder connection

1/

2"

Grate

3 x 3 x 1/4 angle

SECTIOND 3" = 1''-0"

4"

6"

4 - 1/2” thick 8 - 1/4” thick 12 - 7 gauge thick 12 - 10 gauge thick

1" Typ.

℄ Ø 3/8" hole

SHIM PACK FOR BASES

FOR EACH PLATFORM PROVIDE:

1" Typ.

6" Each side

1/4" plate with 4~Ø 3/8" holes for 2 ~ 1/4" Tapcon Anchors 2" long.

Minimum 2 anchors per plate.

2"

2"

PLATFORM BASES

3" = 1''-0"

FOUR PER PLATFORM

1" Ty p.

/8

7- Ø

/1

6" h ol es

3"

℄ Ø 7/16" Holes, evenly spaced and centered tube face, thru tube

HSS 2 x 2 x 3/16

3/16

A

LW

A

YS

T H

IN

K

S A

FE

TY

SHEET

D

C

B

A

D

C

B

A

B U

R

EA

U O

F R

EC

LA

M

A

TI

O N

U .S

D

EP

A R

TM

EN

T

O F

TH

E

IN

TE

R

IO

R

C A D

S

YS

TE

M

A ut oC A D

4.

0S

LM

S T

EC

H

C A D

F

IL

EN

A M

E

6-

0-

5-

R D

-1 .D

W G

LA

S T

S A V

ED

D A

TE

-0 8-

LA

S T

S A V

ED

B Y

C W

A

LS

H

¦D_DT¦

¦STATUS¦

PI

C K -S

LO

A N

M

IS

S O

U R I

B A S

IN

P R O

G R A M

H

EL

EN

A -G

R

EA

T

FA

LL

S D

IV

IS

IO

N

C A N

YO

N

F

ER

R Y

K V S

W

IT

C H

YA

R D

SWITCHYARD PLATFORM

BILLINGS, MT

296-600-60155

DESIGNED

DRAWN

CHECKED

TECH. APPR.

APPROVED

ADMIN APPROVAL -

£TT£

£AT£

£AA£

£TA£

Bone, Gary W

Walsh, Christie S

Lannen, Timothy J

NOTES

1. Platforms designed in accordance with Manual of Steel

Construction and ASD design. Maximum load is two people on the platform.

2. Hot dip galvanize all material after fabrication in accordance with ASTM A123 “Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products” and ASTM A385 “Standard Practice for Providing High-Quality Zinc Coatings (Hot-Dip)”. The fabricator will consult with the galvanizer to insure proper venting and drainage outlets on all parts, cleaning of welded areas and all other surface preparations.

3. Materials:

3.1. Angles and plates ASTM A 36

3.2. Tubes ASTM A 500, Grade B

3.3. Pipe ASTM A53 Grade Bm

3.4. Weld E 70 electrode

4. All machine bolts to be furnished with two matching flat washers and one nut. Machine bolts shall meet the requirements of Society of Automotive Engineers J429- Grade 5. Machine bolt assemblies shall be coated in accordance with ASTM F1941, Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric” Fw/Zn 5A.

5. Fabricated materials shall be straight, true, and free from twists and warps.

6. Details, welds, and other connections shown are typical for similar details.

REFERNCE DRAWINGS

CANYON FERRY POWER PLANT

SUPERSTRUCTURE - OUTLINE

ROOF EL. 3729.58 296-D-729

CANYON FERRY POWERPLANT

SUPERSTRUCTURE

CONCRETE COVER SLAB 296-D-730

Skinner, Norris (David)

S ervisor, e ni a Servi es one, ar e e a s e d