Construction Materials Engineering Introduction

Questions and Answers

What is the primary goal of this course?

To promote the use of alternative materials

To familiarize students with standard testing procedures (correct)

To reduce construction costs

To focus solely on structural steel

Which material is typically used for building in the Philippines due to its lower cost?

Masonry

Wood/Bamboo

Reinforced Concrete (correct)

Structural Steel

What type of structures are generally built with masonry materials?

Refineries

Bungalows (correct)

Warehouses

Skyscrapers

Which material is made from hot rolled steel and used for large structures?

Structural Steel Signup and view all the answers

Why are masonry structures considered weak against lateral forces?

They are weak against high winds and earthquakes Signup and view all the answers

Which material is NOT commonly classified under construction in the Philippines?

Glass Signup and view all the answers

What advantage does the DPWH-BRS Materials Engineering examination provide?

It offers an advantage for professional civil engineers Signup and view all the answers

Which of the following is NOT a material specified for testing?

Rubber Signup and view all the answers

What is prohibited in the laboratory?

Eating during experiments Signup and view all the answers

What is ASTM primarily known for?

Standardizing materials and testing methods Signup and view all the answers

Which ASTM standard pertains to the determination of particle size distribution?

ASTM C136 Signup and view all the answers

Which method is used for testing the setting time of hydraulic cement?

ASTM C191 Signup and view all the answers

Which step comes first in the process of creating a new ASTM standard?

Member identifies a problem or need for revision Signup and view all the answers

Which ASTM standard outlines the determination of slump in concrete?

ASTM C143 Signup and view all the answers

Which of the following is not an ASTM standard mentioned?

ASTM C700 Signup and view all the answers

What does ASTM C127 test for in coarse aggregate?

Relative density and absorption Signup and view all the answers

What is the primary reason for testing construction materials before use?

To identify potential problems during and after construction Signup and view all the answers

Which organization is responsible for standardizing the testing of construction materials?

American Society for Testing and Materials (ASTM) Signup and view all the answers

What is the consequence of using sub-standard construction materials?

Potential legal punishment Signup and view all the answers

Why is wood not considered a good material for high winds?

It is less durable compared to metals Signup and view all the answers

What should be ensured after using electronic or heat-related equipment in the laboratory?

Turn it off Signup and view all the answers

What is one of the responsibilities of the Bureau of Research and Standards?

To enforce standards for construction materials Signup and view all the answers

Which type of cement specification is listed as PNS 7:2005?

Portland cement Signup and view all the answers

What should be done if help is needed in the laboratory?

Call for help Signup and view all the answers

What is the minimum requirement for the accreditation of Materials Engineers?

A registered and licensed Civil Engineer Signup and view all the answers

What must applicants of the Materials Engineer accreditation pass?

A written examination Signup and view all the answers

What score is required to automatically be accredited as Materials Engineer I?

60% and above Signup and view all the answers

Who is prohibited from taking the Materials Engineer accreditation examination?

Department engineers and government engineers Signup and view all the answers

Where is the practical examination for upgrading to Materials Engineer II conducted?

At the Bureau of Research and Standards Office in Quezon City or identified DPWH Regional Office Signup and view all the answers

What must applicants demonstrate during the practical examination?

Sampling and testing procedures of construction materials Signup and view all the answers

What is the purpose of the written examination score conversion?

To obtain the total score for accreditation Signup and view all the answers

Which edition of the DPWH Standard Specifications is referenced for infrastructure projects?

2004 Edition Signup and view all the answers

What is required for an Accredited Materials Engineer I to be upgraded to Materials Engineer II?

Practical Examination only Signup and view all the answers

What is the minimum score required in the Practical Examination to qualify as Materials Engineer II?

75% Signup and view all the answers

How long is an Accreditation barred if an applicant fails to upgrade after two attempts?

One year Signup and view all the answers

Which of the following can a DPWH engineer achieve after scoring 60% and above in the exam?

Accreditation as Contractors’/Consultants’ Materials Engineers I without practical examination Signup and view all the answers

What is the limit for a Materials Engineer II assigned to projects?

One project, with no cost limit Signup and view all the answers

How many projects can a Materials Engineer I handle with a total cost of P150M?

One project costing exactly P150M Signup and view all the answers

What happens to an accredited engineer who enters government service and wants to be a DPWH Materials Engineer?

Can apply for accreditation but needs practical examination Signup and view all the answers

What must a failed applicant do after two unsuccessful attempts at upgrading?

Take a refresher course related to Materials Quality Control Signup and view all the answers

Study Notes

Course Introduction

Aim to familiarize students with standard testing procedures for construction materials.
Prepares students for the DPWH-BRS Materials Engineering examination essential for civil engineering professionals.
Focus on material testing, especially in concrete engineering.

Testing Importance

Testing materials such as cement, sand, gravel, and steel determines physical and mechanical properties.
Identifies potential problems before, during, and after construction.
Ensures safety of structures and occupants.
Punishable by law to use or sell sub-standard construction materials.

Construction Materials in the Philippines

Reinforced Concrete: Commonly used due to lower cost; consists of concrete and steel reinforcing bars.
Structural Steel: Preferred for warehouses and large structures; typically involves hot-rolled steel sections.
Masonry: Used mostly in bungalows; considered non-engineered and low-cost but vulnerable to lateral forces.
Wood: Cost varies by type; generally safe in earthquakes but less durable in high winds.

Standards and Specifications

Governed by the DPWH-Bureau of Research and Standards (BRS) ensuring compliance with construction standards.
BPS Designation Numbers for key materials include:
- Portland Cement (PNS 7:2005)
- Plywood (PNS 196:2000)
- Re-rolled Steel Bars (PNS 211:2000)

ASTM Standards

ASTM sets international standards, influencing methodologies in material testing globally.
Over 12,800 standards and used in 110 countries.
Tests include:
- Particle size distribution of aggregates (ASTM C136).
- Compressive strength of concrete (ASTM C39).
- Time of setting for hydraulic cement (ASTM C191).

Laboratory Safety

Prioritize safety; unnecessary tasks are prohibited in the lab.
Equipment must be turned off after use; first aid kits available.
Supervision is required for operating critical equipment like UTM and ovens.

Accreditation of Materials Engineers

Minimum requirement: must be a registered and licensed Civil Engineer.
Written and practical exams determine accreditation status.
Government engineers are barred from taking the exam for Contractor's Materials Engineer roles.

Classification and Assignment

Materials Engineers classified based on exam results:
- Materials Engineer I: Scores of 60% or above. Limited to project costs ranging from P150M to P250M.
- Materials Engineer II: No cost limit on projects; may handle larger financial responsibilities (up to P300M aggregate).

Upgrading Process

Materials Engineer I can upgrade to II through a practical examination only.
Failed attempts bar from retaking the practical exam for a year and require refresher courses.
DPWH engineers seeking private accreditation maintain their exam scores for consideration in the accreditation process.

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Description

This quiz aims to familiarize students with standard testing procedures for construction materials, crucial for the civil engineering field. It prepares students for the DPWH-BRS Materials Engineering examination and highlights the importance of material testing, particularly in concrete engineering.