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Contractor Logo Contractor Name

Project TitleProject TitleProject TitleProject Title

DOCUMENTDOCUMENTDOCUMENTDOCUMENT

DESCRIPTION:DESCRIPTION:DESCRIPTION:DESCRIPTION: 

MANIFOLDMANIFOLDMANIFOLDMANIFOLD

CRANE AND PIPE SUPPCRANE AND PIPE SUPPCRANE AND PIPE SUPPCRANE AND PIPE SUPPORTINGORTINGORTINGORTING

STRUCTURE DESIGNSTRUCTURE DESIGNSTRUCTURE DESIGNSTRUCTURE DESIGN.

A Issued for Client’s Approval. XXX XXX  XXX  XXX 

Rev.Rev.Rev.Rev. DateDateDateDate Revision DescriptionRevision DescriptionRevision DescriptionRevision Description PreparedPreparedPreparedPrepared CheckedCheckedCheckedChecked ReviewedReviewedReviewedReviewed ApprovedApprovedApprovedApproved

DOCUMENT NUMBERDOCUMENT NUMBERDOCUMENT NUMBERDOCUMENT NUMBER

Type Discp Job SJ Seq Format PAGES

A4A4A4A4 1111 OF 51515151

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Record of Revisions

Rev. Date Revision Description

A Issued for Client’s Approval.

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TABLE OF CONTENTS

Sr.

No.Description

Page No. 

1. Introduction 4

2. Scope 4

3. Design considerations 4

4. Crane girder design: 6

5. White oil manifold Platforms and Pipe supports: 16

6. Black oil manifold Platforms and Pipe supports: 31

7. Annexure

Annexure 1-Crane Layout Data 48

Annexure 2- White oil manifold: LOADING DATA 49

Annexure 3- Black oil manifold: LOADING DATA 50

Annexure 4 –Staadpro output files 51

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1. Introduction: 

This document is produced to cover the design calculations of crane girder, supporting

structure pipe supporting and operation platform for manifold. It is optional to fabricate the

crane girder or vendor supplied. In both cases it is required to assess the forces, design

parameter of the girder as the span is high, and installation of girder is outdoor.

2. Scope: 

This document presents design calculations of crane girder, supporting structure pipe

supporting and operation platform for manifold.

3. Design considerations:

a) Geometry:

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Refer Drawing Number …………………. and client’s drawing Number …………….

CL

750

25GAP

1’

775

1000

750x 800 D

BEAM

5000

EL +11.8MTOP OFRAIL

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Central support

Crane span = 40000+150+375-500=40025mm:

Crane span = 30000+150+375-500=30025mm

4. Crane girder design: 

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Ref is = R1 i.e 1 meaning R1, 2 meaning R2…and so on.

Property of Box girder: 300 wide x 1200 Deep box of 12 thk plate.

Node Numbers:

Member Numbers:

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Support condition: Pinned supports at crane wheel location.

a) Loading

Dead load: Self weight of crane block is assumed 500 Kgs = 5kN.

Girder self weight as per self weight command.

Walkway dead weight is 200 kgs/m = 2kN/m (UDL) along one long girder.

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Live load: Crane lifting weight is considered as live load. Crane capacity 2T =20 kN

Walkway Live load is 500 kgs/m = 5kN/m (UDL) along one long girder.

Vertical Impact factor as per client’s design basis = 25% = 1.25 x 20 = 25kN.

Transverse and longitudinal load along crane movement is considered conservatively equal

to 10% of weight of crab + lifted weight = 0.1 x (5 + 20) = 2.5 kN.

Seismic load: Seismic load and crane operating load will not act simultaneously. But crane

girder in parked position will be checked for seismic forces. 

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Seismic load combination and load factor. While using UBC force for BS8110 combination

shall be divided by 1.4 hence

Ve= 0.1/1.4 W = 0.0714 W.

= (1.4) x Dead load + (1.6) x crane load.

Seismic load combination.

= (1.2) x Dead load + (1.2) x Seismic load.

Wind load:

Refer BS 6399 Part -2,

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Wind Load on crane built up girder 1200 deep= 2 x 1.2 x 0.971 = 2.33 kN/m.

Load combination: Client’s design basis does not provides appropriate load combination so

reference is made to shell DEP for load combination.

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Design Parameter: Ratio within 9.0 for all.

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Stress ratio:

Deflection check:

Deflection limits,

Vertical deflection of girder: L/600

Span/300 = 40025/600 = 66.70mm > (76-12) 63mm hence ok.

Lateral deflection direction wind and eq case : = span /300 BS 5950-1 Table 8

40025/300= 133.4167mm > 49 mm hence ok.

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General BMD:

SFD:

AFD:

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Support Reaction to transfer on Manifold concrete structure.

Use 30kN along X 195 kN along Y and 56 along Z. at 6m c/c of wheels.

Seismic and wind reaction is less critical that DL + CL so only DL + CL is considered on RC beam

design of manifold.

New load case is generated to assess highest load on RC beam when crane is closer to support.

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Use 30kN along X 201 kN along Y and 61 along Z. at 6m c/c of wheels.

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5. White oil manifold Platforms and Pipe supports:

Dimensions

PLAN AT TOS EL +5.500M Pipe Support.

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Bracing:

Ref 1 = R1…and so on.

Node Numbers:

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Member Numbers:

At +7.050M

At +5.500M

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Column Numbers: Platform:

Dead Load: at 7.05 level platform.

Load on middle girder G1 = 3.5/2 x 100 kg/sqm = 1.75kN/m.

Load on middle Girder G1 contribution on both sides= (3.5 + 3.3)/2x 100 kg/sqm = 3.4 kN/m.

Load on side girder G2 = 3.3/2 x 100 kg/sqm = 1.65kN/m.

Consider 3.5 kN/m UDL for all Girders.

3500

3300

G1

G2

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Live Load: at 7.05 level platform.

Live load 500kg/sqm = 5kN/sqm x 3.4 = 17kN/m UDL.

Side girder = 8.5kN/m.

Piping load: Refer annexure B for white oil Manifold load by piping.

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N-S = 13.8 kN VERT 67.5kN E-W = 13.8 kN.

Load combination: as per BS 8110 and BS 5950 and design basis …………….;

LC 10 For member design.

LC 11 For deflection design

Member design Parameters:

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All column effective length 1.5 times unsupported length.

Member stress ratio below 0.9 for all members.

Note:

1. Platform only main members are modeled.

2. Platform members are resting on wall top of steel stub column are not modeled only

supports at that location are modeled.

3. At pit floor columns are resting on 300 high pedestals are not modeled.

4. Highest reaction due to all supports will be transferred to RC manifold pit raft and wall

respectively.

Stress check:

At +7.050M

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At +5.500M

Column Numbers: Platform:

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Pipe Support Columns:

Bracings:

Deflection limits: Horizontal 

Horizontal deflection of plat form: L/300

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Height/300 = 4450/300 = 14.83mm > 8mm hence ok.

Horizontal deflection pipe supports: L/300 : = span /300 BS 5950-1 Table 8

Height/300 = 2900/300 = 10mm > 9mm hence ok.

Support Reactions: To transfer manifold base slab: Nodes: Pipe support unbraced bays;

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Consider E-W 2 kN Vertical 191 kN and N-S 45 kN force for manifold slab design.

Braced bay loads:

Consider E-W 118 kN Vertical 443 kN and N-S 11 kN force for manifold slab design.

Platform loads:

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Consider E-W 5 kN Vertical 55 kN and N-S 5 kN force for manifold column design.

Platform bracing:

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E-W 118 kN Vertical 443 kN and N-S 11 kN force for manifold slab design same as .braced bay load.

BMD, SFD and AFD:

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2. Black oil manifold Platforms and Pipe supports: 

Dimensions

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Member Properties:

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Ref 1 = R1…and so on.

Node Numbers:

At +7.050M

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At +5.500M

At +2.900M

Member Numbers:

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At +7.050M

At +5.500M

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Column Numbers:

Bracing Numbers:

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Dead Load: at 7.05 level platform.

Load on middle girder G1 = 3.5/2 x 100 kg/sqm = 1.75kN/m.

Load on middle Girder G1 contribution on both sides= (3.5 + 3.3)/2x 100 kg/sqm = 3.4 kN/m.

Load on side girder G2 = 3.3/2 x 100 kg/sqm = 1.65kN/m.

Consider 3.5 kN/m UDL for all Girders.

Live Load: at 7.05 level platform.

Live load 500kg/sqm = 5kN/sqm x 3.4 = 17kN/m UDL.

Side girder = 8.5kN/m.

3500

3300

G1

G2

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Piping load: Refer annexure B for white oil Manifold load by piping.

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N-S = 15 kN VERT 100kN E-W = 15 kN.

Load combination: as per BS 8110 and BS 5950 and design basis……………………..;

LC 10 For member design.

LC 11 For deflection design

Member design Parameters:

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All column effective length 1.5 times unsupported length.

Member stress ratio below 0.9 for all members.

Note:

5. Platform only main members are modeled.

6. Platform members are resting on wall top of steel stub column are not modeled only

pinned support is modeled.

7. At pit floor columns are resting on 300 high pedestals not modeled.

8. Highest reaction due to all supports will be transferred to RC manifold pit raft and wall

respectively.

Stress check:

At +7.050M

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At +5.500M

Column Platform:

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Pipe Support Columns:

Deflection limits: Horizontal 

Horizontal deflection of plat form: L/300

Height/300 = 4500/300 = 15mm > 3 mm hence ok.

Horizontal deflection pipe supports: L/300 : = span /300 BS 5950-1 Table 8

Height/300 = 2900/300 = 10mm > 3mm hence ok.

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Support Reactions: To transfer manifold base slab: Nodes: Unbraced pipe supports:

Consider E-W 2 kN Vertical 257 kN and N-S 38 kN force for manifold slab design black oil.

Braced pipe supports::

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Consider E-W 94 kN Vertical 180 kN and N-S 17 kN force for manifold slab design.

Reaction on wall

Consider E-W 5 kN Vertical 55 kN and N-S 5 kN force for manifold column design.

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Consider E-W 1 kN Vertical 218 kN and N-S 89 kN force for manifold column design.

BMD, SFD and AFD:

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Reaction Summary

White oil Manifold. Black oil Manifold. Remark

Location EW V NS EW V NS

Unbraced Pipes supportframes

2 191 45 2 257 38

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braced Pipes support frames 118 433 11 94 180 17Adopt for WO Bracedlocation

Platform resting on Raft 110 233 1 1 218 89

110 233 45 Adopt for WO manifold slab

94 257 94 Adopt for BO manifold slab

Reaction on wall 5 55 5 5 55 5 Same for WO and BO

1. Annexures

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Annexure 1-Crane Layout Data

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Annexure 2- White oil manifold: LOADING DATA.

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Annexure 3- Black oil manifold: LOADING DATA

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Annexure 4 –Staadpro output files