cblm fabricating formworks

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COMPETENCY-BASED LEARNING MATERIAL Sector: CONSTRUCTION Qualification Title: CARPENTRY NC II Unit of Competency: FABRICATE FORMWORKS Module Title: FABRICATING FORMWORKS Technical Education and Skills Development Authority Jacobo Z. Gonzales Memorial School of Arts and Trades San Antonio, Biñan City JZGMSAT QA SYSTEM Carpentry NC II Fabricating Formworks Date Developed: Aug. 1, 2011 Document No. Issued by: Page 1 of 33 Developed by: Glenn F. Salandanan Revision # ____

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Page 1: CBLM Fabricating Formworks

COMPETENCY-BASED LEARNING MATERIAL

Sector: CONSTRUCTION

Qualification Title: CARPENTRY NC II

Unit of Competency: FABRICATE FORMWORKS

Module Title: FABRICATING FORMWORKS

Technical Education and Skills Development AuthorityJacobo Z. Gonzales Memorial School of Arts and Trades

San Antonio, Biñan City

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 1 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 2: CBLM Fabricating Formworks

HOW TO USE THIS COMPETENCY BASED LEARNING MATERIAL

Welcome to the module in fabricating form works. This module contains training materials and activities for you to complete.

You are required to go through a series of learning activities in order to complete each learning outcome of the module. In each learning outcome are Information Sheets, Self-Checks, Operation Sheets and Job Sheets. Follow these activities on your own. If you have questions, don't hesitate to ask your facilitator for assistance.

The goal of this course is the development of practical skills. To gain these skills, you must learn basic concepts and terminology. For the most part, you'll get this information from the Information Sheets and multimedia materials

This module was prepared to help you achieve the required competency, in "Fabricating Form works".

This will be the source of information for you to acquire knowledge and skills in this particular competency independently and at your own pace, with minimum supervision or help from your instructor.

Remember to:Work through all the information and complete the activities in each section.Read information sheets and complete the self-check. Suggested references

are included to supplement the materials provided in this module.Most probably your trainer will also be your supervisor or manager. He/she is

there to support you and show you the correct way to do things.You will be given plenty of opportunity to ask questions and practice on the

job. Make sure you practice your new skills during regular work shifts. This way you will improve both your speed and memory and also your confidence.

Use the Self-checks, Operation Sheets or Job Sheets at the end of each section to test your own progress.

When you feel confident that you have had sufficient practice, ask your Trainer to evaluate you. The results of your assessment will be recorded in your Progress Chart and Accomplishment Chart.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 2 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 3: CBLM Fabricating Formworks

UNIT OF COMPETENCY : FABRICATE FORMWORKS

MODULE TITLE : FABRICATING FORM WORKS

MODULE DESCRIPTOR : This module covers the knowledge, skills and attitude in selecting and preparing materials, tools and equipment for fabricating form works, laying-out, cutting to dimensions of form sheating and stiffeners and assembling form panels.

NOMINAL DURATION : 40 hrs.

CERTIFICATE LEVEL : NATIONAL CERTIFICATE LEVEL II

PREREQUISITE :

SUMMARY OF LEARNING OUTCOMES:

Upon completion of this module, the trainee/student must be able to:

LO 1. Prepare materials, tools and equipment for fabricating form works

according to job requirements

LO 2. Lay-out and cut to dimension of form sheating and stiffeners

LO 3. Assemble form panels

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 3 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 4: CBLM Fabricating Formworks

ASSESSMENT CRITERIA:

1. Plans and details are correctly interpreted and identified according to job requirements

2. Materials, tools and equipment are identified consistent with job requirements

3. Materials and tools are properly stored and freed from defects.

4. Appropriate PPE are selected according to job requirements.

5. Form sheating and stiffeners are measured and marked according to job specifications

6. Form sheating and stiffeners are laid out and cut with tolerances of ±3 mm for all measurements and squareness

7. Appropriate PPE is used according to job requirements

8. Form panels and stiffeners are laid-out for pre-assembly

9. Form panels and stiffeners are pre-assembled

10. Form panels and stiffeners are checked for squareness according to job requirements

11. Form panels and stiffeners are assembled

12. Appropriate PPE is used according to job requirements and safety regulations

13. Unexpected situations are responded to in line with company rules and regulations

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 4 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 5: CBLM Fabricating Formworks

LEARNING OUTCOME NO. 1 Prepare materials, tools and equipment for fabricating formworks

CONTENTS:• Tools, materials and equipment for fabricating formworks• Materials estimates• Mechanical properties of lumber • Economic use of materials

ASSESSMENT CRITERIA1. Plans and details are correctly interpreted and identified according to job

requirements2. Materials, tools and equipment are identified consistent with job

requirements3. Materials and tools are properly stored and freed from defects.4. Appropriate PPE are selected according to job requirements.

CONDITIONS: You must be provided with the following:

1. WORKPLACE LOCATION2. TOOLS AND EQUIPMENT

• Claw Hammer• Pencil/Marking pen• Pull-Push Rule• Nylon String• Steel Square• Try-square• Hand Saw• Chalk Line

3. TRAINING MATERIALSLeaning PackagesBond paperBall pens

• Personal Protective Equipment

• Portable Circular Saw• Plan and working drawings• Lumber• Nails• Plywood

ManualsRelated References

ASSESSMENT METHOD

Portfolio

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 5 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 6: CBLM Fabricating Formworks

Learning ExperiencePREPARE MATERIALS, TOOLS AND EQUIPMENT FOR FABRICATING

FORM WORKS

Learning Activities Special Instructions

Read Information Sheet No. 2.1-1 on Tools , materials and equipment for fabricating formworks

Answer Self-Check No. 2.1-1Compare your answer to the answer key

Read Information Sheet No. 2.1-2 on Material for fabricating formworks

Answer Self-Check No. 2.1-2Compare your answer to the answer key

Read Information Sheet No. 2.1-3 on Mechanical properties of lumber

Read Information Sheet No. 2.1-4 on Economic use of materials

Answer Self-Check No. 2.1-4Compare your answer to the answer key

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 6 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 7: CBLM Fabricating Formworks

INFORMATION SHEET NO. 2.1-1TOOLS, MATERIALS AND EQUIPMENT FOR FABRICATING

FORMWORKS

Refer to module on Stake-out Building Lines, Information Sheet No. 1.1-4 on Tools, Materials and Equipment in Staking-out Building Lines

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by: Page 7 of 33

Developed by:Glenn F.

SalandananRevision # ____

Page 8: CBLM Fabricating Formworks

INFORMATION SHEET NO. 2.1-2MATERIALS FOR FABRICATING FORMWORKS

LEARNING OBJECTIVE:Upon completing this section, you should be able to KNOW the DIFFERENT

MATERIALS for FABRICATING FORMWORKS and FORMWORK DETAILS.

A. Materials used for FormworkMaterials used for the construction of concrete formwork range from traditional

materials such as wood, steel, aluminum, and plywood to nontraditional materials such as fiberglass. Wood products are the most widely used material for formwork.

1. Timber and Plywood Timber and plywood are the material used most for formwork because it is high in quantity whereby the material is easy to get. Besides that , timber and plywood can be handled better because it is easy to cut it and fix as a formwork. This includes the easy handling of it .

2. Metal Panel Metal formwork has a very high reuse potential. So it is more economical than timber where repetitive work is necessary.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 8 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 9: CBLM Fabricating Formworks

3. Plastic (FRP) Another material used here is the fiberglass-reinforced plastic as a formwork. Its functions well because :• Moldability • Light weight • Strength• Toughness

B. Construction of Forms consist of:

1. Plywood - It is made in thicknesses of 1/4, 3/8, 1/2, 5/8, and 3/4 inch, and in widths up to 48 inches. The 8-foot lengths are most commonly used. The 6/8- and 3/4-inch thicknesses are most economical.

2. Supporters or studs - Vertical studs make the sheathing rigid. These studs are generally made from 2 x 4 lumber. Studs also require reinforcing when they extend more than 4 feet.

3. Braces - Braces give the forms stability. The most common brace uses a horizontal member and a diagonal member nailed to a stake and to the stud or wale. The diagonal member of the brace should make a 30° angle with the horizontal member.

4. Spacer - Spreaders must be placed near each tie wire. Spreaders are cut to the same length as the thickness of the wall and placed between the two sheathing surfaces of the forms.

5. Tie Wire - Tie wires hold the forms secure against the lateral pressures of unhardened concrete. Double strands are always used. Ties keep wall forms together as the concrete is positioned. The tie wire is made taut by twisting it with a smooth metal rod or a spike.

6. Assorted CWN - refers to the different size of nail ranging from 1”-4” (25 mm-100 mm) in length.

C. Formwork detail for different structural membersIn concrete construction formwork is commonly provided for the following

structural members:

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 9 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 10: CBLM Fabricating Formworks

1. Formwork for sloping side column It consists of• Side Supports• Side Planks• Cleats

2. Wall foundationsIt consists of: • Plywood Sheeting• Struts

3. Formwork for WallIt consists of:• Timber sheeting• Vertical posts• Horizontal members• Rackers• Stakes• Wedges

After completing one side of formwork reinforcement is provided at the place then the second side formwork is provided.

4. Formwork for ColumnIt consists of the following:• Side & End Planks• Yoke• Nut & BoltsTwo end & two side planks are joined by the

yokes and bolts.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 10 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 11: CBLM Fabricating Formworks

5. Formwork for Slabs & beamsIt consists of:• Sole plates• Wedges• Props• Head tree• Planks• Batten• Ledgers

- Beam formwork rests on head tree- Slab form work rests on battens and joists- If prop height are more than 8’ provide

horizontal braces

6. Formwork for StairsIt consists of:• Vertical & inclined posts• Inclined members• Wooden Planks or sheeting• Stringer• Riser Planks

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 11 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 12: CBLM Fabricating Formworks

SELF- CHECK NO. 2.1-2

Check your mastery in materials in fabricating forms by completing the tasks below.

MULTIPLE CHOICE: Read the statement carefully. Choose the letter of the correct answer. Write the letter of your choice on the space provided.

________1. These materials are used for most formwork because it is high in quantity whereby the material is easy to get.

a. Earthb. Metal Panelc. Timber and plywoodd. Plastic

________2. These material is more economical than timber where repetitive work is necessary

a. Earthb. Metal Panelc. Timber and plywoodd. Plastic

________3. These make the sheathing rigid and are generally made from 2 x 4 lumber.

a. Bracesb. Spacerc. Supportersd. Tie wire

________4. It gives the forms stability. a. Bracesb. Spacerc. Supportersd. Tie wire

________5. Which of the following is not a member of formworks for column?a. Rackersb. Side & End Planksc. Yoked. Nut & Bolts

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 12 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 13: CBLM Fabricating Formworks

ANSWER KEY 2.1-2

Check your answer with the answer key below. If you fail to get it right, refer back to corresponding resources until you make it perfect.

1. C2. B3. C4. A5. A

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 13 of 33Developed by:Glenn F.

SalandananRevision # ____

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INFORMATION SHEET NO. 2.1-3MECHANICAL PROPERTIES OF LUMBER

LEARNING OBJECTIVE:Upon completing this section, you should be able to KNOW the

MECHANICAL PROPERTIES of LUMBER.

Basic understanding of mechanical properties of lumber is necessary for concrete formwork design. Wood is different from any other structural material in that allowable stresses of wood are different according to the orientation of the wood.

A. Bending StressesThe figure below shows a simply supported wood beam with a concentrated

load applied at the midpoint. This process results in bending. The lumber is stressed internally to resist the external loads. Bending in a member causes tension forces in the extreme fibers along the face farthest from the load and causes compression in the fiber along the side closest to the applied load. The maximum stress induced in the fibers, which occurs at the edges, is referred to as the ‘‘extreme fiber stress in bending.’’ This stress is highly dependent on the parallel-to-grain strength of the wood in both tension and compression.

B. Modulus of Elasticity (MOE)Modulus of elasticity is a measure of stiffness. This factor (MOE) is a

relationship between the amount of deflection in the member and the value of load applied that causes the deflection. The amount of deflection depends on the size of the member, the span between the supports, the load, and the particular member specie of wood. The parallel-to-grain MOE (i.e., the stiffness when wood is pushed or pulled parallel to the wood grain) is about 30 times greater than the perpendicular-to-grain MOE.

Bending stress

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 14 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 15: CBLM Fabricating Formworks

C. Tensile and Compressive StrengthsTensile strength is a measure of the ability of wood to resist pulling forces. On

the other hand, compressive strength is a measure of the ability of wood to resist pushing forces. For clear wood (wood without defects), the tensile and compressive strengths for parallel-to-grain loads are approximately 10 times greater than for loads applied perpendicular to the wood grain.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 15 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 16: CBLM Fabricating Formworks

INFORMATION SHEET NO. 2.1-4ECONOMIC USE OF MATERIALS

LEARNING OBJECTIVE:Upon completing this section, you should be able to KNOW the ECONOMICS

USE of MATERIALS

Formwork is the largest cost component for a typical multistory reinforced concrete building. Formwork cost accounts for 40 to 60 percent of the cost of the concrete frame and for approximately 10 percent of the total building cost.

Timber is an economical material of formworks construction but it has a short life span. As the reusability of timber formwork is low and it can only be reused 8-15 times, several sets of timber formworks are needed for a high-rise building or a large project. Hence, the cost of the formwork is high in long run.

Steel formworks might have the high cost at the beginning of the construction but as steel formwork has a long lifespan and high reusability; it can save the cost in long run. This is because less replacement of old formwork is needed. It can save concrete volume needed because it can form a long span comparing to timber formwork.

A. Tips for avoiding waste construction materials

1. Study carefully the plan and detailed drawing.

2. From the given detailed drawing, you can study its different parts, including sizes of these parts

3. Cutting lumbers, always refer to the schedule of cutting

4. Always determine the methods of measurement used in the plan for marking

5. Always remember the principles for cutting “measure twice and cut once”

6. In cutting lumber and plywoods, always use effective tools.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 16 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 17: CBLM Fabricating Formworks

SELF- CHECK NO. 2.1-4

Check your mastery in the economic use of materials by completing the tasks below.

ENUMERATION:

1. Explain the differences of using timber formworks from steel formworks (7 points).

2. Enumerate at least three (3) in avoiding waste on construction materials used in fabricating formworks.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 17 of 33Developed by:Glenn F.

SalandananRevision # ____

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ANSWER KEY 2.1-4

Check your answer with the answer key below. If you fail to get it right, refer back to corresponding resources until you make it perfect.

1. Timber is more economical material in formwork construction but it has a shorter life span and it can be reused 8-15 times only while steel formworks might have the high cost at the beginning of the construction but as steel formwork has a long lifespan and high reusability in long run because less replacement of old formwork is needed. It can save concrete volume needed because it can form a long span comparing to timber formwork.

2. Answers are any of the following• Study carefully the plan and detailed drawing• From the given detailed drawing, you can study its different parts,

including sizes of these parts• Cutting lumbers, always refer to the schedule of cutting• Always determine the methods of measurement used in the plan for

marking• Always remember the principles for cutting “measure twice and cut once”• In cutting lumber and plywoods, always use effective tools.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 18 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 19: CBLM Fabricating Formworks

LEARNING OUTCOME NO. 2 Lay-out and cut to dimension of form sheating and stiffeners

CONTENTS:• Form design • Prefabrication of formwork panels

ASSESSMENT CRITERIA1. Form sheating and stiffeners are measured and marked according to job

specifications2. Form sheating and stiffeners are laid out and cut with tolerances of + 3 mm

for all measurements and squareness3. Appropriate PPE is used according to job requirements

CONDITIONS: You must be provided with the following:

1. WORKPLACE LOCATION2. TOOLS AND EQUIPMENT

• Claw Hammer• Pencil/Marking pen• Pull-Push Rule• Nylon String• Steel Square• Try-square• Hand Saw• Chalk Line

3. TRAINING MATERIALSLeaning PackagesBond paperBall pens

• Personal Protective Equipment

• Portable Circular Saw• Plan and working drawings• Lumber• Nails• Plywood

ManualsRelated References

ASSESSMENT METHOD

PortfolioDemonstration

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 19 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 20: CBLM Fabricating Formworks

Learning ExperienceLAY-OUT AND CUT TO DIMENSION OF FORM SHEATING AND

STIFFENERS

Learning Activities Special Instructions

Read Information Sheet No. 2.2-1 on Form design

Answer Self-Check No. 2.2-1Compare your answer to the answer key

Read Information Sheet No. 2.2-2 on Prefabrication of formwork panels

Perform Operation Sheet No. 2.2-2 on Prefabricate Form Panels and Stiffeners

Evaluate your own work using the Performance Criteria ChecklistPresent your work to your trainer for evaluationKeep a copy of your work for the next activities

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 20 of 33Developed by:Glenn F.

SalandananRevision # ____

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INFORMATION SHEET NO. 2.2-1FORM DESIGN

LEARNING OBJECTIVE:Upon completing this section, you should be able to KNOW the

IMPORTANCE OF FORMWORKS, FACTORS INFLUENCING FORM DESIGN and FORM CHARACTERISTICS.

Form is a temporary boarding, sheating or pan used to produce the desired shape and size of concrete. The structural members of a building are built-up into its desired shape and dimension through the use of forms which serve as mold for the mixed concrete.

Concrete mixture is generally semi-fluid that reproduces the shape of anything into which it is poured. Concrete form should be water tight, strong enough and rigid to sustain the weight of the concrete. It should be simple and economically designed in such manner that they are easily removed and reassembled without damaged to themselves or to the concrete.

A. Form Design1. Importance of Formwork

• Protects the concrete• Aids in the curing of the concrete• Supports any reinforcing bars or conduit embedded within it• Represents up to one-third of a concrete structure's total cost

2. Factors influencing form design• Nature of the structure• Availability of equipment and form materials• Anticipated reuse of the forms• Familiarity with construction methods that influence the formwork

design• Strength of the forming materials and the loads they must support• Concrete's final shape, dimensions, and surface finish

B. Form Characteristics 1. Ensure that the forms are tight, rigid, and strong. Loose forms permit loss of

cement which can result in--• Honeycombing. Honeycombing is when the concrete is not satisfactorily

consolidated or vibrated air pockets form within the concrete and present a pocked appearance.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

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• Sand streaking. Sand streaking occurs when concrete loses too much water due to loose forms; the water carries sand with it through the gaps in the formwork and causes streaking.

2. Ensure that the forms are braced enough to align them and strong enough to hold the concrete.

3. Take special care in bracing and tying down forms used for configurations, such as retaining walls. Ensure that the forms are wide at the bottom and taper toward the top.

4. Ensure that wall forms are braced properly. The concrete in wall forms, such as the first pour, tends to lift the form above its proper elevation.

5. Reuse forms by constructing them in a manner that allows easy removal and replacement with minimal damage.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 22 of 33Developed by:Glenn F.

SalandananRevision # ____

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SELF- CHECK NO. 2.2-1

Check your mastery in form designs by completing the tasks below.

ENUMERATION:

1. What are the importance of formworks? Give at least 2

a. ___________________________

b. ___________________________

2. What are the factors influencing form designs? Enumerate at least 3

a. ___________________________

b. ___________________________

c. ___________________________

3. What are the 2 results of loose forms?

a. ___________________________

b. ___________________________

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 23 of 33Developed by:Glenn F.

SalandananRevision # ____

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ANSWER KEY 2.2-1

Check your answer with the answer key below. If you fail to get it right, refer back to corresponding resources until you make it perfect.

1. Importance of formworks are (any of the following answers):a. Protects the concreteb. Aids in the curing of the concretec. Supports any reinforcing bars or conduit embedded within itd. Represents up to one-third of a concrete structure's total cost

2. Factors influencing form design are (any of the following answers):a. Nature of the structureb. Availability of equipment and form materialsc. Anticipated reuse of the formsd. Familiarity with construction methodse. Strength of the forming materials and the loads they must supportf. Concrete's final shape, dimensions, and surface finish

3. Loose forms results in:a. honey combingb. sand streaking

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 24 of 33Developed by:Glenn F.

SalandananRevision # ____

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INFORMATION SHEET NO. 2.2-2PREFABRICATION OF FORMWORK PANELS

LEARNING OBJECTIVE:Upon completing this section, you should be able to KNOW the DIFFERENT

HAND TOOLS and MACHINE USED and the PROCEDURES in PRE-FABRICATING FORMWORK PANELS.

Prefabricated formwork panels are indispensable for beam and column formworks. Prefabricated formwork panels, however, are also recommended for series production of foundation and ceiling formworks.

In that case the construction of the panels differs from that of panels for beam and column formworks but the technology of prefabrication is the same.

A. Hand tools and machines

• Circular saw• hand saw• hammer• wrecking bar

• folding rule• try square• measuring rods

B. Procedure 1. Prepare the work.

Make available the tools and materials. A work table is to be manufactured

2. Enter all sizes required from the working drawing.Derive the sizes from the dimensions of the column for which the formwork is to be made. Prepare the size distribution of the stiffeners in particular.

3. Cut up the boards.Locate the sizes of the forms to the plywood at both ends then using your chalk line, mark the boundaries to be cut.. Do not place the rough edge of the board to the inside of the formwork. Always consider the economy use of materials. Note: If you use circular saw for cutting plywood ask the Permission of your teacher

4. Cut the stiffeners straps to length. Use 2”X 2” lumber for the stiffener. Butt joint is commonly used in this construction. Adopt the schedule for cutting.

5. After cutting, arrange and classify cut members ready for assembling.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 25 of 33Developed by:Glenn F.

SalandananRevision # ____

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OPERATION SHEET NO. 2.2-2Title: Prefabricate Form Panels and Stiffeners

Performance Objective: Given the necessary materials, you should be able to pre-fabricate form panels and stiffeners

Supplies and Materials: Working Drawing/ PlanLumber, plywood, fasteners

Tools and Equipment: • circular saw• hand saw• hammer• wrecking bar

• folding rule• try square• measuring rods

Steps/Procedure:

1. Prepare the work. 2. Enter all sizes required from the working drawing shown below.3. Cut up the boards.4. Cut the stiffeners straps to length. Use 2”X 2” lumber for the stiffener. Butt

joint is commonly used in this construction. Adopt the schedule for cutting.Note: If you use circular saw for cutting plywood ask the permission of your teacher

5. After cutting, arrange and classify cut members ready for assembling.

Assessment Method:PortfolioDemonstration

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 26 of 33Developed by:Glenn F.

SalandananRevision # ____

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PERFORMANCE CRITERIA CHECKLISTOPERATION SHEET NO. 2.2-2

Name of Trainee:______________________________ Date: __________________

CRITERIA YES NO

1. Did I measure and mark form sheating/board according to plan?

2. Did I measure and mark form stiffeners according to plan?

3. Did I use appropriate personal protective equipment in cutting formwork materials?

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 27 of 33Developed by:Glenn F.

SalandananRevision # ____

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LEARNING OUTCOME NO. 3 Assemble form panels

CONTENTS:• Assembling form panels and stiffeners

ASSESSMENT CRITERIA1. Form panels and stiffeners are laid-out for pre-assembly2. Form panels and stiffeners are pre-assembled3. Form panels and stiffeners are checked for squareness according to job

requirements4. Form panels and stiffeners are assembled 5. Appropriate PPE is used according to job requirements and safety

regulations6. Unexpected situations are responded to in line with company rules and

regulations

CONDITIONS: You must be provided with the following:

1. WORKPLACE LOCATION2. TOOLS AND EQUIPMENT

• Claw Hammer• Pencil/Marking pen• Pull-Push Rule• Nylon String• Steel Square• Try-square• Hand Saw• Chalk Line

3. TRAINING MATERIALSLeaning PackagesBond paperBall pens

• Personal Protective Equipment

• Portable Circular Saw• Plan and working drawings• Lumber• Nails• Plywood

ManualsRelated References

ASSESSMENT METHOD

Portfolio

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 28 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 29: CBLM Fabricating Formworks

Learning ExperienceASSEMBLE FORM PANELS

Learning Activities Special Instructions

Read Information Sheet No. 2.3-1 on Assembling form panels and stiffeners

Perform Operation Sheet No. 2.3-1 on Assembling form panels and stiffeners

Evaluate your own work using the Performance CriteriaPresent your work to your trainer for evaluationKeep a copy of your work for the next activities

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 29 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 30: CBLM Fabricating Formworks

INFORMATION SHEET NO. 2.3-1ASSEMBLING FORM PANELS AND STIFFENERS

LEARNING OBJECTIVE:Upon completing this section, you should be able to PERFORM the

PROCEDURES in ASSEMBLING FORM PANELS AND STIFFENERS.

A. Procedure in Assembling Form Panels and Stiffener using Plywood and Lumber

1. Prepare all the materials and tools needed.

2. Position materials such as form sheating and stiffener correctly. The stiffener should be consistent with standard spacing for studs or nailer with tolerance of + 10 mm. O.C.

3. Assemble form panels. Check for squareness, levelness and alignment to specified tolerance. Make sure that the smooth side of the board is placed outside the frame

4. Nail the form sheating to the stiffener using as many nails as necessary to make the panel stable in itself. Fasten first the two sides of the form sheating with the stiffeners making sure it is flushed to its edges. Then fasten the ribs for strength at 50 cm. apart. Drive 3” CWN to fasten it.

Note: Always check for squareness.

5. Clinch the nail tips. Turn over the panel and clinch the penetrated nail tips.

6. Check form panels in compliance with job requirement.

7. Label the finished form accordingly as specified in the working drawing.

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 30 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 31: CBLM Fabricating Formworks

B. Procedure in Assembling Form Panels using Forming Boards

1. Prepare the work. Make available the tools and materials. A work table is to be manufactured

2. Enter all sizes required into the working drawing. Derive the sizes from the dimensions of the beam for which the formwork is to be made. Prepare the size distribution of the cover straps in particular.

3. Cut up the boards. The board width should not exceeded 140 mm. Do not place the rough edge of the board to the inside of the formwork

4. Cut the stiffening cover straps to length. Cover straps to have a width of approx. 55 mm with 25 mm projection for comer joints!

5. Put the cover straps on the arranged boards according to the size distribution made. Use measuring rod, if necessary!

6. Nail the cover straps on the board−panel. It is provisional nailing with short nails (40 mm). Use as many nails as necessary to make the panel stable in itself.

7. Nail the cover straps on the boards from the opposite side. Turn over the provisionally nailed board−panel and nail it with 70 mm long nails. Two nails per board are to be diagonally arranged at the cover strap joint!

8. Clinch the nail tips. Turn over the panel again and clinch the penetrated nail tips!

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 31 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 32: CBLM Fabricating Formworks

OPERATION SHEET NO. 2.3-1Title: Assemble Form Panels and Stiffeners

Performance Objective: Given the necessary materials, you should be able to assemble form panels and stiffeners

Supplies and Materials: Working Drawing/ PlanLumber, plywood, fasteners

Tools and Equipment: • Hammer• Marking Tools• Measuring Tools

• Steel Square• Try-square• PPE

Steps/Procedure:

1. Prepare all the materials and tools needed.

2. Position materials such as form sheating and stiffener correctly. The stiffener should be consistent with standard spacing for studs or nailer with tolerance of + 10 mm. O.C.

3. Assemble form panels. Check for squareness and alignment to specified tolerance. Make sure that the smooth side of the board is placed outside the frame.

4. Nail the form sheating to the stiffener using as many nails as necessary to make the panel stable in itself. Fasten first the two sides of the form sheating with the stiffeners making sure it is flushed to its edges. Then fasten the ribs for strength at 50 cm. apart. Drive 3” CWN to fasten it.

Note: Always check for squareness.

5. Clinch the nail tips. Turn over the panel and clinch the penetrated nail tips.

6. Check form panels in compliance with job requirement.

7. Label the finished form accordingly as specified in the working drawing.

Assessment Method:PortfolioDemonstration

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 32 of 33Developed by:Glenn F.

SalandananRevision # ____

Page 33: CBLM Fabricating Formworks

PERFORMANCE CRITERIA CHECKLISTOPERATION SHEET NO. 2.3-1

Name of Trainee:______________________________ Date: __________________

CRITERIA YES NO

1. Did I lay-out the panels and stiffeners properly before pre-assembly?

2. Did I check the measurements of the members of the form panels prior to assembly?

3. Are the form panels and stiffeners assembled according plans?

• squareness of forms?

• smooth side of the board is placed outside the frame?

• stiffeners are flushed to the edges of panels?

• ribs are spaced at 50 cm on center?

4. Did I responded to unexpected situations accordingly?

5. Did I label the form panels according to plans?

JZGMSATQA

SYSTEM

Carpentry NC II

Fabricating Formworks

Date Developed:Aug. 1, 2011

Document No. Issued by:

Page 33 of 33Developed by:Glenn F.

SalandananRevision # ____