682 26.5.2015.pdf

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TABLE OF CONTENTES

Introduction....3

Disclaimer.3

Objective Statement.3

Summary of The Study.3

REPORT BODY4

Data/Assumptions..4

The Structure..4

Analysis4

Design Recommendations5

Conclusion..5

Validation...5

Site Photos..6

Cad Drawings....7

Appendix 1Computer Design Output .15


Introduction

Disclaimer

This report was prepared by CEDC Consultants in the course of performing work for LANDMARK-

PLUS. The opinions expressed in this report do not necessarily reflect those of the Contractor,

and reference to any specific product, service, process, or method does constitute an implied or

expressed recommendation or endorsement of it. Further, Vodafone Egypt make no warranties

or representations, expressed or implied, as to the fitness for particular purpose or

merchantability of any product, apparatus, or service, or the usefulness, completeness ,or

accuracy of any processes, methods, or other information contained, described, disclosed, or

referred to in this report. The Contractor & the Consultant make representation severally that

the use of any product, apparatus, process, method, or other information will not infringe

privately owned rights and will assume ability for any loss, injury, or damage resulting from, or

occurring in connection with, for their own part of the scope.

Objective

The main objective of the report is to present the results of poles evaluation carried out in order

to study the characteristics of a steel poles, where own weight of the poles, own weight of

equipment and wind loads are considered in the analysis for check the stresses in all elements of

three poles 6.00m due to Existing loads, future loads.

This Report Describes the Results of the Site Visit and Complete Structural investigation

Summary of the Study

Date of visit: 26-MAY -2015

Engineer Name: Michael Samir


Report Body

Data/Assumptions [Design Criteria ]

o Structural analysis model was carried out using STAAD PRO 2008 /Auto CAD 2015.

o All input data and output results of the analysis as shown in Appendix l.

o The poles is checked on:

Poles wind forces are calculated in accordance to ANSI-TIA-222-G-2009.

Basic wind speed is 120km/h

Operation wind speed is 90 km/h

Maximum allowable tilt and twist = 0.50 at 90 km/hr. for poles

Topographic Category will be (1)

Structure class will be (2)

Exposure category will be (C)

Steel Grade relevant the design code standards.

The Structure

o The structure was found 3 steel poles 6.00m on existing penthouse.

o Penthouse is bearing wall structure

Analysis

The existing structure supporting elements are analyzed under the poles loads. The poles design load

cases are considered in the analyses, with the possibility of extra cases to simulate different wind

load directions in different cases 0, 45, 90, and 135, to 315 degree. The resulted bending moments

and shear forces, to satisfy ANSI-TIA-222-G-2009 specifications, as shown in Appendix I, which

includes all of the structural analyses and the design outputs.


Poles existing loads:

POLE (1) (6.00m Height )

Existing loads:

1 Antenna @ 3.50m from the bottom of Antenna. 1 Antenna @ 5.00m from the bottom of Antenna. 2RRU@ 3.00m from the bottom of RRU. 1 MW Dish 0.3 m@ 4.40m 1 MW Dish 0.3 m@ 5.50m

POLE 2 (6.00m Height)

Existing loads:

1 Antenna @ 3.50m from the bottom of Antenna. 1RRU@ 2.30m from the bottom of RRU. 1RRU@ 2.50m from the bottom of RRU. 1 MW Dish 0.3 m@ 3.90m 1 MW Dish 0.3 m@ 5.50m

POLE 3 (6.00m Height)

Existing loads:

1 Antenna @ 3.00m from the bottom of Antenna. 1RRU@ 2.30m from the bottom of RRU. 1RRU@ 2.50m from the bottom of RRU.


Conclusion:-

Based on the site visit and the detailed analysis for the existing tower and steel grillage:

The penthouse is unsafe under existing poles loads due to the following reasons: - There is separation between penthouse slab and walls.

- Penthouse Slab thickness is smaller than 10 cm.

- There are diagonal, horizontal and vertical cracks in the penthouse walls.


Site Photos


Penthouse slab thickness is smaller than 10 cm

Diagonal, horizontal and vertical cracks in penthouse walls


Separation between penthouse slab walls


Diagonal, horizontal and vertical cracks in penthouse walls


Separation between penthouse slab walls

682 26.5.2015.pdf

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