Telecom Tower Roof top Analysis Report

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Roof top analysis report for Telecom tower installation in myanmar.

Transcript of Telecom Tower Roof top Analysis Report

  • MTE Engineering Co.,Ltd.

    Fax: 513598, Mobile: 5019332, 5106643, 73042214

    STRUCTURAL ANALYSIS Operatorfor Roof Top Installation Project

    HUAWEISITE CODE: YGN-0072 Technologies (YGN)SITE OWNER: SA By Tarabit WaveSITE ADDRESS: SA Team ID TW-SA-01SUMMARY Report Engineer Mr.29-July-2013 Location Map YGNRESULTS AND RECOMMENDATIONS:

    A Good

    Tripod status at Point of each Pole

    9M 6m

    Pole 1 YES YES

    Pole 2 YES Yes

    Pole 3 NO YES

    Pole 4 NO YES

    Equ. on beam Yes YES

    Analysis Reference Data:

    1 No Floors=4

    2 Yes

    The analysis of the building (data) as per

    ACI- Steel Minimium See Site survey sketch

    Yes/No Remark

    The strengthening : No

    the structure modification: No

    Nan Dar

    B.E ( Civil)

    Structural Engineer

    STRUCTURAL ENGINEER

    The building is structurally adequate in its current condition.

    Additional Task work Status

    Sir. Description As-built Reference on

    XCDC - As-built Data Survey Data

    The building is structurally adequate for proposed tripod tower

    The building is structurally adequate for proposed tripod tower

    Yes/No

    The building is structurally adequate for proposed tripod tower

    BTS load on beam ( exception of Tripod support on beam)

    Site photos & Survey Attached

    Source of data

    Item Description of each analysis ( Roof top) adequate statusposition

    The building is structurally adequate for proposed tripod tower

    0

    2

    4

    6

    8

    10

    1 2 3 4

    9M

    6M

    Location

    Type of Tripod

    12.8

    0

    Tripole, Roof top,

    0

    2

    4

    6

    8

    10

    12

    14

    0 5 10 15

    Height of BLD

    Roof top

    BLd width (m)

    H(m

    )

    H(m

    )

    1

    3 4

    2

  • MTE Engineering Co.,Ltd.

    Fax: 513598, Mobile: 5019332, 5106643, 73042214

    STRUCTURAL ANALYSIS Operatorfor Roof Top Installation Project

    HUAWEISITE CODE: YGN-0072 Technologies (YGN)SITE OWNER: SA By Tarabit WaveSITE ADDRESS: SA Team ID TW-SA-01

    Engineer Mr.

    29-July-2013 Location Map YGNRESULTS AND RECOMMENDATIONS:

    Tripod position at: 1

    Sr. Yes/NoA Yes

    B YES

    C YES

    Tripod position at: 2B YES

    C YES

    The structural framming system for Pole 2 is the same as the pole 1.

    B9''X14"

    The roof top STR status in without poles: Structure is safe 3-16mm @T&B

    Structure is safe for 9M and 6M is OK 1-6.5mm @6"

    Analysis Reference Data:

    1 XCDC - As-built Data No Survey Data2 Site photos & Survey Yes Attached

    The analysis of the building (data) as perACI- Steel Minimium See Site survey sketch

    Yes/No RemarkThe strengthening : Nothe structure modification: No

    Nan Dar C9''X9" B9''X12"B.E (Civil) 4-16mm @section 2-16mm @T&BStructural Engineer 1-6.5mm @7.5"Tie 1-6.5mm @5"

    Description of each analysis ( Roof top) adequate statusThe building is structurally adequate in its current condition.

    The building is structurally adequate for proposed 9m tripod and equipment.

    The building is structurally adequate for proposed 6m tripod and equipment.

    Source of data

    Additional Task work Status

    Reference onSir. As-builtDescription

    The building is structurally adequate for proposed 9m tripod and equipment.

    The building is structurally adequate for proposed 6m tripod and equipment.

    1

    3 4

    2

  • MTE Engineering Co.,Ltd.

    Fax: 513598, Mobile: 5019332, 5106643, 73042214

    TABLE OF CONTENTS

    1. CRITERIA / DESIGN SPECIFICATION3 Page

    1.1 Important Factor 2

    1.2 Exposure Category / Wind Speed up 2

    1.3 Design Considerations 3

    1.4 Material Strength 4

    1.5 Codes and References 5

    2. INVESTIGATION REPORT 6

    2.1 Introduction 4

    2.2 Tower Description 4

    2.3 Roof Description 5

    2.4 Conclusions and Recommendations 5

    3. DESIGN COMPUTATIONS 5

    3.1 Calculations of Wind Forces 6

    3.2 Etab Analysis Result Summary 8

    4. ANNEX Pages

    1 CRITERIA / DESIGN SPECIFICATION

    In the structural investigation of the 9m and 6m Type Tower and the immediately affected roof framing due to

    the installation of the proposed telecom antennas.

    The modeling and analysis of the tower were performed using ETab 9.5

    Load criteriaDead Load : Super imposed dead Load = 20 psf

    Parapet Wall Load = 120 lb per cuft ( as per site )

    Live load : Reactions at each point of Tripod. ( see Table)Service equipment load = as per requested loadsExisting Water Tank load = according to Capacity

    Wind Load: As per Attached Wind Load reaction dataV200 and V160

    1.1 IMPORTANCE FACTOR

    For serviceability consideration, this shall be taken equal to 1.0

    9M

    6M

  • MTE Engineering Co.,Ltd.

    Fax: 513598, Mobile: 5019332, 5106643, 73042214

    1.2 EXPOSURE CATEGORY / WIND SPEED-UP

    According Tower Reaction Tables, where all necessaries Service reactions are described.

    1.3DESIGN CONSIDERATION

    In the analysis of the tower which in addition to the existing roof top, the design take into consideration

    for the proposed antenna and appurtenances as follows:

    Fx'@XMax.= +/- 1.14 kNFy'@XMax.= +/- 7.581 kN

    Mx'@X Max.= +/- 0 kN*mMy'@X Max.= +/- 0 kN*m

    Fz'@XMax.= +/- 26.634 kN

    1 Fx Max.= +/- 1.209 kNFy Max.= +/- 0.89 kN

    1 Mx Max.= +/- 0.921 kN*mMy Max.= +/- 1.112 kN*m

    57 DN -Fz Max.= + 57.011 kNUp- Fz Max.= -48.827 kN

    Fx'@YMax.= +/- 10.377 kNFy'@YMax.= +/- 0.531 kN

    Mx'@Y Max.= +/- 0 kN*mMy'@Y Max.= +/- 0 kN*m

    Fz'@YMax.= +/- 37.713 kN

    -60

    -40

    -20

    0

    20

    40

    60

    80

    1 2 3 4

    Fz@C (9m)

    Fz@C(6m)

    @Center

    -30

    -20

    -10

    0

    10

    20

    30

    1 2 3 4

    Fz@X (9m)

    Fz@X(6m)

    @X

    -60

    -40

    -20

    0

    20

    40

    60

    1 2 3 4

    Fz@Y (9m)

    Fz@Y(6m)

    @Y

    @C

    @X

    @Y

  • MTE Engineering Co.,Ltd.

    Fax: 513598, Mobile: 5019332, 5106643, 73042214

    The Analysis of the structure is based on the following Reaction table. ( The Max. reactions due to Wind)Reaction of RT Pole 9m (V200) is The Major Criteria check loads for 9 M and 6M Type Towers Installation.

    Horizontal Vertical HorizontalFx kN Fz kN Fy kN Mx kNm Mz kNm My kNm

    Case1 0 -1.204 -33.362 -0.001 -0.11 0 1.084Case2 45 -0.881 -48.827 -0.885 -0.892 0 0.886Case3 180 1.209 41.546 0.006 0.138 0 -1.112Case4 270 0.886 57.011 0.89 0.921 0 -0.914Case1 0 -1.14 0.093 -0.365 0 0 0Case2 45 -0.531 26.634 -7.581 0 0 0Case3 180 1.138 0.259 0.362 0 0 0Case4 270 0.529 -26.281 7.578 0 0 0Case1 0 -10.377 37.713 0.366 0 0 0Case2 45 -7.585 26.638 -0.531 0 0 0Case3 180 10.374 -37.361 -0.368 0 0 0Case4 270 7.582 -26.286 0.529 0 0 0

    Reaction of RT Pole 6m (V200)Horizontal Vertical Horizontal

    Fx kN Fz kN Fy kN Mx kNm Mz kNm My kNmCase1 0 2.92 -18.285 -0.02 -0.061 0 -3.036Case2 45 2.05 -26.555 2.05 2.102 0 -2.102Case3 180 -2.917 21.632 0.023 0.07 0 3.027Case4 270 -2.047 29.902 -2.047 -2.093 0 2.093Case1 0 -10.678 20.177 0 0 0 0Case2 45 -7.536 14.289 -0.478 0 0 0Case3 180 10.675 -19.828 0 0 0 0Case4 270 7.533 -13.94 0.478 0 0 0Case1 0 -0.675 0.131 0.02 0 0 0Case2 45 -0.478 14.289 -7.536 0 0 0Case3 180 0.675 0.218 -0.023 0 0 0Case4 270 0.478 -13.94 7.533 0 0 0

    1.4MATERIAL STRENGTH

    Material strength used for structural steel assumed to have complied with internationallyrecognized

    standards and have the following minimum yield strength.

    - All steel pipes assumed to conform to ASTM A53 Grade with Minimum Yield Stress of 240MPa.

    - Structural Steel Plate assumed to have minimum yield s strength of 240 MPa.

    - Structural Connection Bolts assumed to conform to ASTM A325.

    - Anchor Bolts assumed to conform to ASTM A572 with minimum yield strength of 414 MPa.

    The Compressive Strength of reinforced concrete is assumed at 18MPa. Reinforcing steel bars are

    likewise assumed to have minimum yield strength of 275 Mpa.

    reinforcement, respectively.

    The

    Firs

    t crit

    eria

    che

    ck li

    st (

    Reac

    tions

    ) for

    9M

    and

    6M

    Typ

    es

    Wind Load'@

    Center

    Support X

    Support Y

    Wind Load'@Node

    Moment

    Moment

    The

    Seco

    nd c

    riter

    ia c

    heck

    list

    ( Re

    actio

    ns) f

    or 6

    M

    Type

    if th

    e 9M

    Typ

    e re

    actio

    ns a

    re n

    ot a

    daqu

    ate.

    Center

    Support X

    Support Y

    Node

  • MTE Engineering Co.,Ltd.

    Fax: 513598, Mobile: 5019332, 5106643, 73042214

    1.5 CODES AND REFERENCES

    - AISC Steel Construction Manual, 9th,13th Edition

    - AISC LRFD "Load and Resistance Factor Design" Vol. 1, 3rd edition

    - ACI 318.99 , ACI318-05 / 1BC 2003

    2 INVESTIGATION REPORT

    2.1 INTRODUCTION

    This report summarizes the structural engineering investigation of the existing roof framing and the

    immediately affected of 2 types of Towers. The tower shall be utilized to carry additional

    telecommunication antennas, as indicated in tem 1.3. For this reason, a structural investigation is

    conducted to determine the structural integrity of the tower and the roof structures.

    2.2 TOWER DESCRIPTION

    As per Towers specifica