LAY OUT REFERENCE LINES
Site:
QTEK E-Learning
Printed by:
Charolino Jr. Palmaira
Course:
CARPENTRY NCII
Date:
Wednesday, 30 April 2025, 1:58 PM
Book:
LAY OUT REFERENCE LINES
Description
PERFORMANCE CRITERIA
At the end of the unit the students can able to
1. Prepare materials and tools
2. Locate the offset line establish by the line and grade/surveyor
3. Establish the required reference lines
Table of contents
Prepare materials and tools
DOLE Department Order No. 13 series 1998 Guidelines Governing Occupational Safety and Health in the Construction Industry
Green Building Concept relative to Construction (3R, 5S)
Safe handling and standard specification of materials and tools
Signs and symbols
Company rules and regulations
Basic surveying
Productivity work measurements
Factors affecting productivity
Adherence to work requirements
Ways of improving productivity
Organizing materials to be used
Handling and use of materials and tools
Using PPE
Communicating effectively
Implementing 3R and 5S
Following company rules and regulations
Locate the offset line established by the line and grade/ surveyor
Methods and techniques in measurements
Understanding instructions
Applying mensurations
Applying productive methods and techniques
Establish the required reference lines
Implementing 5 S
Prepare materials and tools
Assessment Criteria:
1. Personal protective equipment (PPE) is used in accordance with Rule 1080 of Occupational Safety and Health Standards
2. List of materials and tools are secured and followed according to job requirements
3. Materials and tools are selected, inspected and prepared consistent with job requirements.
4. Work area is cleaned according to safety and environmental regulations (e.g. PD 1152 Section 6, 8 & 42)
5. Required output is completed as specified by the immediate supervisor based on work schedule.
DOLE Department Order No. 13 series 1998 Guidelines Governing Occupational
Safety and Health in the Construction Industry
Department Order No. 128-13 Amending Rule 1414 on
Scaffoldings of the 1989 Occupational Health and Safety
Standards, As Amended
S2.1 General Requirements 2.1.1 Every scaffold shall be of good construction ofsound materials and strength for the purpose for which it is
intended; 2.1.2. Timber used forscaffoldsshall be in good condition,the bark com- pletely stripped off, and not painted or treated in any manner
that defects cannot be easily seen; and 2.1.3. All materials and parts ofscaffold not in use or intended for re- use shall be kept under good
condition and separate from other materials unsuitable for scaffolds. 2.2. Specific Requirements 2.2.1. Timber/bamboo scaffoldsshall be limited
to a height of 6meters from the ground or base. For over 6 meters height, steel scaffolds shall be used. 2.2.2 Structural steel when used as load
bearing members of scaf- folding shall be destressed at welded or bent joints and design construction approved by the appropriate authority.
2.2.3 All manufactured scaffolds and its accessories shall follow the manufacturers’ designs and specification. Technical properties and data
ofsuch manufactured scaffoldsshall be certified true by a qualified testing laboratory. For manufactured scaffolds more than 6 meters in height
shall be designed by structural engineer and approved by appropriate authority. 2.2.4. All site fabricated/conventional supported scaffolds
exceed- ing 6 metersin height or a working load of 150 kg/m2 shall be designed and inspected by the structural engineer and approved by the
appropriate authority.
1414.03: Design and Stability. 3.1. Design 3.1.1. A design instruction, including all data relevant to the design of the scaffold, shall be prepared
by the end user to serve as the starting point forsubsequent work decisions, design work, calculations, and drawings; 3.1.2. The design shall be
in accordance with recognized engineering principlestaking into consideration the variability of materials, workmanship,methodsof
construction,siteconditions, construction tolerances and the space for scaffolds; 3.1.3. Scaffolds shall be designed with regard to ease and safety
of erection and dismantling; 3.1.4 Supported scaffolds and their components shall be capable ofsupporting without failure at least four (4)
timesthe maxi- mum intended load, while suspended scaffolds shall have six (6) times factor of safety; and 3.1.5. Allscaffolds designed by a
structural engineershall be approved by appropriate authority.
Inspection of Scaffold Components Before Erection. 4.1. All scaffold material delivered on site shall be visually inspected either upon delivery or
before it is erected/installed. Any defective materialshall be repaired, replaced or discarded. 4.2 Lumber with two (2) nail holes aligned crosswise
or four (4) nail holes along itslength shall not be used as horizontal load bearing member of scaffolds.
Site Inspection and Preparation. 5.1. Site inspection shall be carried out before actual erection to check ground conditions, overhead wires,
obstructions, changesin surface elevation, and structural support. 5.2. Site preparation shall be performed to ensure that the soil are level and
firm, mud and soft soil are replaced with compacted gravel or crushed stone, and on sloping grounds, the area where mudsills rest shall be
leveled by excavating rather than backfilling.
Green Building Concept relative to Construction (3R, 5S)
Safe handling and standard specification of materials and tools
Signs and symbols
Company rules and regulations
Basic surveying
Productivity work measurements
Factors affecting productivity
Adherence to work requirements
Ways of improving productivity
Organizing materials to be used
Handling and use of materials and tools
Using PPE
Communicating effectively
Implementing 3R and 5S
Following company rules and regulations
Locate the offset line established by the line and grade/ surveyor
Assessment Criteria:
1.Related sketches and working drawings are followed according to job requirement
2.Offset line/ building line is located and verified.
3.Work area is cleaned according to safety and environmental regulations (e.g. PD 1152 Section 6, 8 & 42)
4.Required output is completed as specified by the immediate supervisor based on work
Methods and techniques in measurements
Understanding instructions
Applying mensurations
Applying productive methods and techniques
Establish the required reference lines
Assessment criteria:
1 Initial lines are marked from offset lines in accordance with working drawings.
·2. Final reference lines are marked, squared and plumbed in accordance with working drawings.
·3. Subsequent markings are done as required.
·4. Work area is cleaned according to safety and environmental regulations (e.g. PD 1152 Section 6, 8 & 42)
5. Required output is completed as specified by the immediate supervisor based on work
Implementing 5 S