Introduction and Overview - DGCS Volume PDF

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview  Contents  ABBREVIATIONS ............................................................................................................................................... V 1 INTRODUCTION ....................................

Description

Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview 

Contents  ABBREVIATIONS ............................................................................................................................................... V 1

INTRODUCTION ..................................................................................................................................... 1-1 1.1 BACKGROUND ................................................................................................................................................ 1-1 1.2 SCOPE ........................................................................................................................................................... 1-1 1.3 PURPOSE ....................................................................................................................................................... 1-2 1.4 OVERVIEW ..................................................................................................................................................... 1-2 1.4.1 Volume 1 – Introduction and Overview ............................................................................................... 1-2 1.4.2 Volume 2 – Surveys and Site Investigation .......................................................................................... 1-2 1.4.3 Volume 3 – Water Projects Design ...................................................................................................... 1-3 1.4.4 Volume 4 – Highway Design ................................................................................................................ 1-3 1.4.5 Volume 5 – Bridge Design .................................................................................................................... 1-3 1.4.6 Volume 6 – Public Buildings and Other Related Structures Design .................................................... 1-3

2

DESIGN PREPARATION PROCESS ........................................................................................................ 2-1

3

2.1 LEGAL RESPONSIBILITIES ................................................................................................................................ 2-1 2.2 DESIGN PREPARATION PROCESS ...................................................................................................................... 2-1 2.2.1 New Infrastructure ............................................................................................................................... 2-2 2.2.2 Upgrading, Repairs and Retrofitting of Existing Infrastructure ........................................................ 2-2 2.3 DESIGN REVIEW ............................................................................................................................................. 2-3 2.3.1 Detailed Design Stage Review .............................................................................................................. 2-3 2.4 APPLICATION OF THE GUIDE ............................................................................................................................ 2-3 2.4.1 Context Sensitive Solutions .................................................................................................................. 2-4 2.5 RISK.............................................................................................................................................................. 2-5

4

3.1 3.2 3.3

DESIGN FOR EMERGENCY RESPONSE .................................................................................................. 3-1 EVALUATION.................................................................................................................................................. 3-1 TEMPORARY REPAIRS ..................................................................................................................................... 3-3 PERMANENT REPAIRS..................................................................................................................................... 3-3

SAFETY ................................................................................................................................................... 4-1

4.1 SAFE DESIGN ................................................................................................................................................. 4-1 4.1.1 Safety of Personnel and the Public....................................................................................................... 4-1 4.1.2 Working Environment.......................................................................................................................... 4-2 4.1.3 Particular Requirements for Site Investigation .................................................................................. 4-2 5

6

ENVIRONMENT ...................................................................................................................................... 5-1 5.1 5.2 5.3

LAWS, POLICIES AND PROCEDURAL REQUIREMENTS ON ENVIRONMENTAL PRESERVATION ................................... 5-1 ENVIRONMENTAL CONSIDERATIONS IN INFRASTRUCTURE DESIGN ...................................................................... 5-2 SOCIAL ENVIRONMENT CONSIDERATION IN INFRASTRUCTURE DESIGN ................................................................ 5-3

GENDER .................................................................................................................................................. 6-1

7

PROVISIONS FOR ACCESSIBILITY ........................................................................................................ 7-1

8

ENGINEERING PLANS/ DRAWINGS ...................................................................................................... 8-1

9

SCOPE AND LIMITATIONS OF THE DPWH DESIGN GUIDE ................................................................ 9-1

10

ALTERNATIVE DELIVERY METHODS ................................................................................................ 10-1

10.1 TRADITIONAL APPROACH .......................................................................................................................... 10-1 10.2 PERMITTED ALTERNATIVE METHODS ......................................................................................................... 10-1 10.3 NEW ALTERNATIVE METHODS ................................................................................................................... 10-2 10.4 DESIGN AND CONSTRUCT PROCUREMENT .................................................................................................... 10-3 10.5 PUBLIC PRIVATE PARTNERSHIP .................................................................................................................. 10-4 10.5.1 PPP in the Philippines ..................................................................................................................... 10-5

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview   

10.6

11

 

ii 

SELECTION OF PROCUREMENT METHOD .........................................................................................................…..10-6

REVISION...............................................................................................................................................…….11-1

Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview 

Volumes   Volume 1

Volume 2A Volume 2B

Introduction and Overview

GeoHazard Investigation

Engineering Surveys

Volume 2C

Geological and Geotechnical Investigations

Volume 4

Highway Design

Volume 6

Public Buildings and Other Related Structures

Volume 3

Volume 5

   

Water Projects Design

Bridge Design

 

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview   

 

Tables and Figures  Table 2-1 Table 2-2    

iv 

Qualitative Risk Analysis Matrix Level of Risk ...................................................................................................2-6 Risk Assessment for Design ........................................................................................................................................2-6  

Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview 

Abbreviations  Acronym 

Definition 

AASHTO 

American Association of State Highway and Transportation Officials 

CNC 

Certificate of Non­Coverage 

CSS 

Context Sensitive Solutions 

DENR 

Department of Environment and Natural Resources 

DGCS 

Design Guidelines, Criteria and Standards 

DOLE 

Department of Labor and Employment  

DPWH 

Department of Public Works and Highways 

ECA 

Environmental Critical Area 

ECC 

Environmental Compliance Commitment 

ECC 

Environmental Compliance Certificate 

EIA 

Environmental Impact Assessment 

EIARC 

EIA Review Committee 

EISS 

Environmental Impact Statement System 

EMB 

Environmental Management Bureau 

IEE 

Initial Environmental Examination 

KPI 

Key Performance Indicators 

LRFD 

Load and Resistance Factor Design 

MTPIP 

Medium Term Philippine Investment Plan 

NECA 

Non­Environmentally Critical Area 

OSHC 

Occupational Safety and Health Center  

PDR 

Project Description Report 

PEIS 

Programmatic Environmental Impact Statement 

PHP 

Philippine Pesos 

PICE 

Philippine Institute of Civil Engineers 

PPE 

Personal Protective Equipment 

PPP 

Public Private Partnership 

RDIP 

Regional Development Investment Program 

                       

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview 

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Introduction

1.1 

Background The six Volumes of the Design Guidelines, Criteria and Standards (DGCS) published in the year 2015 replace the two Volumes of the DGCS published in 1984. This guide will be the official guide for designs carried out within the Department of Public Works and Highways (DPWH) or for DPWH.

1.2 

The DPWH functions as the engineering arm of the Government of the Republic of Philippines and as such is responsible for the establishment of appropriate design standards for the purposes of ensuring the safety of public infrastructure and the production of detailed designs for public engineering projects. The DGCS was prepared to specify the design policies, standards and procedures that are used by the DPWH and by consultants engaged by the DPWH.

Scope

The DGCS shall apply to the preparation of concept, preliminary and detailed engineering for categories of infrastructure projects undertaken by DPWH including stream and flood control, roads and bridges and buildings. It has not been developed as a text book or a substitute for engineering knowledge, experience or judgment. No attempt is made to detailed techniques for which reference to appropriate technical studies and literature is required.

The DPWH DGCS also includes requirements for surveys, site investigations to be undertaken for DPWH projects and shall be used as the basis for the preparation of design and estimates of costs of projects.

The DPWH DGCS shall be used by all Regional Offices, District Engineering Offices, Bureaus and Services of the DPWH and by consultants engaged by DPWH. The design guidelines contained in the DPWH DGCS shall be governed by applicable provisions of existing laws, codes (latest editions) and Departmental issuances as identified in each of the Volumes.

Adherence to the provisions of the DGCS shall ensure that reasonably feasible and economical designs should be developed for the preparation of detailed design of projects. In general, all structures shall be designed for all loads and loading conditions to which they shall be subjected. Loads include dead loads, live loads, earth pressure, wind loads, hydraulic loads, traffic loads, impact loads and seismic loads which act on parts or the entire structures. The effects of temperature variations, shrinkage and swelling, long-term loadings, repetitive loadings and impact shall be considered. The stability analysis of structures shall allow for construction sequences. The design method for structures shall be based on load and resistance factor design (LRFD) principles, also called limit state design. All design shall adopt the Metric System of units.

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview   

All computations shall contain the scope of work, the design criteria, a description of the calculations, and an explanation of any computer program output, supported with sketches and shall be independently checked and approved. Special specifications, to be used in conjunction with the DPWH Standard Specification, shall be prepared for each project, to provide details of any nonstandard materials, processes or control.

1.3 

Quantity estimates for each project, based on the detailed design drawings, shall be prepared based on the DPWH standard quantities, to show quantities of different items of work and shall form the basis of a Bill of Quantities to be incorporated in the Contract Drawings.

Purpose

The purpose of the DGCS is to provide unity and uniformity of design in the preparation of design for all classes of infrastructure projects undertaken by the DPWH in accordance with following overriding requirements:

  Ensure the safety of all infrastructure users and third parties.   Protect property and the public welfare.

  Provide an adequate level of service for all infrastructure to meet the design

requirements.

  Provide design structures for appropriate loads and load combinations.

  Provide infrastructure that is functional and aesthetic, and require an optimum

level of maintenance appropriate to an optimum whole life costs and maximizing asset value.

  Provide guidelines for using new technology that improves the performance of

DPWH infrastructure.

1.4 

1.4.1 

1.4.2 

  Optimize the use of indigenous materials, labor and other resources.

Overview

The DPWH DGCS consists of six volumes: Volume 1 – Introduction and Overview

Volume 1 provides an introduction and overview to the complete document, and includes material common to the full range on infrastructure design. Volume 2 – Surveys and Site Investigation

Volume 2 comprises of three sub-volumes: Volume 2A – GeoHazard Investigation

Volume 2B – Engineering Surveys

Volume 2C – Geological and Geotechnical Investigation

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview 

Volume 2 covers GeoHazard Investigations, Engineering Surveys and Geological and Geotechnical Investigations during the planning or concept development, design development and detailed engineering phases of projects.

1.4.3 

1.4.4 

1.4.5 

1.4.6 

The requirements for surveys and site investigations apply across the full range of infrastructure design.

Volume 3 – Water Projects Design

Volume 3 covers structures related to flood control, drainage and coastal structures. The volume includes material on hydrology, hydraulics, flood studies, climate change and scour that is also applicable to the design of highways and bridges. Volume 4 – Highway Design

Volume 4 covers geometric design, pavement, safety facilities, drainage, intersection, earthworks, ground treatment, landslide control/slope protection, street lighting, GeoHazard management, environmental safeguard, etc. for highways. The volume includes the Standards and Guidelines for safety planners, safety design and road safety risk assessment in consonance with 2012 DPWH Road Safety Design Manual and International Road Assessment Program Star Rating Roads for Safety. Volume 5 – Bridge Design

Volume 5 covers bridge aesthetics, and the design of all types of bridges under Philippine conditions based on the AASHTO LRFD bridge design specification. The volume covers all types of structures required for highways and bridges including long-span structures, tunnels, cut-and-cover structures and retaining walls. Retrofitting of existing bridges is also included. Volume 6 – Public Buildings and Other Related Structures Design

Volume 6 covers the design of buildings and other related structures based on current international design standards. The volume covers architectural, structural, electrical, electronics, mechanical and sanitary/plumbing design, retrofitting of existing buildings and performance-base design. The structures include steel and concrete buildings, towers, earth retaining-structures, elevated and underground water reservoirs and water/sewage treatment plants.

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Design Guidelines, Criteria and Standards: Volume 1 ­ Introduction and Overview 

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Design Preparation Process

2.1 

Legal Responsibilities Engineers are professional persons who operate under and within the limits set under their registration which is managed through the Professional Registration Commission.

For example, the Board of Civil Engineers registers civil engineers upon passing of a board examination. The practice of civil engineering is defined as covering services in the form of consultation, design, preparation of plans, specifications, estimates, erection, installation and supervision of the construction of streets, bridges, highways, railroads, airports and hangars, port works, canals, river and shore improvements, lighthouses, and dry docks; buildings, fixed structures for irrigation, flood protection, drainage, water supply and sewerage works; demolition of permanent structures; and tunnels. The enumeration of any work in this section shall not be construed as excluding any other work requiring civil engineering knowledge and application. The Philippine Institute of Civil Engineers (PICE) is the accredited professional organization for civil engineers recognized by the Board.

Civil engineer members of PICE are required to operate under the PICE Code of Ethics that impose the following requirements on members, Although the following principles are applicable only for Civil Engineers, they can be applicable to all other professions as well. All professionals undertaking planning, investigations and design of public infrastructure shall comply with their registration and the Code of Ethics of their accredited professional organization. Engineers and other professionals are responsible for their actions and can fa...