P O R T F O L I O P E R E I R A ,
P e d r o
INT RO D UCT IO N
Illustrated in this Portfolio is a brief selection of the work I recently developed as a structural engineer in collaboration with Viatel – Portugal’s leading company within telecommunications engineering networks, with a presence in several countries such as Spain, France, Brazil, Angola, Mozambique, Timor and the Caribbean.
The projects presented are to be considered as a supplement of the CV previously submitted and, therefore, should be viewed only as exemplificative of the technical skills formerly listed. Also, they do not necessarily meet the highest complexity or dimension criteria; in alternative, they focus on some of the traditional areas of structural engineering design, applied here to telecommunications infrastructure implementation and development.
The document is organized in four parts, including references to steel structure analysis, structural modeling, foundation and connections calculations and designs, and Cad drawings:
1.
TOWER DESIGN;
2.
PRECAST MODULAR SITE;
3.
OUTDOOR EQUIPMENTS PLATFORM;
4.
INTERFACE DESIGN.
Due to obvious reasons concerning company’s policies and intellectual property rights, client’s names and information, and project calculations, details and dimensions are purposely omitted.
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1.
T OW E R
D E SI GN
SIVICC TOWER
•
SITE LOCATION
PORTUGAL
PROJECT OVERVIEW
As a part of the maritime surveillance system modernization plan of the Portuguese coast (SIVICC), it became necessary to build new telecommunications towers properly designed to effectively withstand standard modern radar equipment (dimensions three to four times superior to the usual wireless networks antennas). The project presented concerns a self-supporting 45 meter tower, with a 3.0 meter side square base, constructed as a free-standing steel lattice structure, with angle legs, angle sections and angle cross bracing - all of those tapered sections calculated according to EC3. The foundation, designed according to the Sulzberger Method, resists the full expected dynamic loads and verifies the safety parameters for soils with geological properties at least as good as wet sand, providing this solution with a wide range of implementation scenarios.
SPECIFIC REQUIREMENTS
Sections, connections, actions, design calculations and service deflections obtained according to European regulations.
PORTFOLIO FEATURES
Structural modeling, loads calculations in line with the European Standards, and foundation design according to the Sulzberger Method.
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1.
T OW E R
D E SI GN
STRUCTURAL MODELLING
Sections
Materials
Loads / Cases
Combinations
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1.
T OW E R
D E SI GN
WIND LOAD - EUROCODES
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1.
T OW E R
D E SI GN
FOUNDATION DESIGN – SULZBERGER METHOD
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2.
P R EC A ST
M O DUL A R
SIT E
FAST DEPLOYMENT SITE
SITE LOCATION
DEMOCRATIC REPUPLIC OF SÃO TOMÉ AND PRINCIPE
PROJECT OVERVIEW
In the scope of the new mobile network infrastructure being developed in São Tomé and Principe, a series of new telecommunications towers are being constructed, in order to accommodate the country’s recent needs. Although recognized as a nation with excellent prospects of short-term social-economic development, São Tomé and Principe does not yet offer the necessary infrastructures to supply such a project in terms of raw materials, equipment or specialized working force. Therefore, the proposed design consists of a full precast structure composed of two truss modules, one with 30.00 and other with 20.00 meters; the foundation, also precast, is formed by three concrete reinforced slab panels. These characteristics allow the tower to be entirely shipped to the site location and mounted with minimum insitu resources. Additionally, as the base connection is exactly the same for the two modules, it may initially operate with 20 or 30 meters, and be eventually upgraded to 50 meters, thus allowing a flexible management of the networks capabilities.
SPECIFIC REQUIREMENTS
Full precast steel structure, including precast reinforced concrete panels used as foundation slabs.
PORTFOLIO FEATURES
AutoCAD drawings and connection details.
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2. AUTOCAD GENERIC DRAWINGS
P R EC A ST
M O DUL A R
SIT E
CONNECTION DETAILS
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
VODAFONE 3G NETWORK QATAR – GREEN FIELD OUTDOOR EQUIPMENTS PLATFORM
SITE LOCATION
QATAR
PROJECT OVERVIEW
This project concerns a canopy designed to shelter base station equipments for telecommunications towers all over Qatar. It is composed of a slab foundation which bears a truss steel structure that functions as a support for the sunshade roof above.
SPECIFIC REQUIREMENTS
Structural analysis including steel sections, connections, slab design and dynamic wind actions according to ASCE's codes and standards.
PORTFOLIO FEATURES
Structural modeling and generic drawings.
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
STRUCTURAL MODELLING
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
AUTOCAD BASE DRAWINGS
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
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3.
OUT DO O R
EQ UI PM E NT S
PL AT F OR M
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4.
I NT E RF A C E
D E SI GN
ANTENNA INTERFACE DESIGN FOR A PUBLIC LIGHT POLE
SITE LOCATION
AZORES, PORTUGAL
PROJECT OVERVIEW
In several cases, due to environmental issues or spatial constrains, the usual solutions concerning the telecommunications equipment cannot be applied. Thus, a customized structure must be designed according to the site location and its specific needs. In the particular scenario presented below, the lack of space for a new tower construction in the city center of Ponta Delgada (Azores) constituted a determinative condition, which obliged to convert a preexisting light pole into a functional solution. The interface design consists of a fixed double sided connection, anchor bolted through the concrete pole with a high resistance resin, assuring the necessary support for the antennas placed on top.
SPECIFIC REQUIREMENTS
Concrete – Steel plate connection design according to European standards.
PORTFOLIO FEATURES
Connection design and generic AutoCAD drawings.
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4.
I NT E RF A C E
D E SI GN
CONNECTIONS CALCULATIONS AND DESIGN
Calculation Data
Load Cases and Combinations
Tension
Shear
Tension + Shear
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4.
I NT E RF A C E
D E SI GN
AUTOCAD DRAWINGS
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