Podcast
Questions and Answers
What is the purpose of installing a temporary horizontal wood brace during column construction?
What is the purpose of installing a temporary horizontal wood brace during column construction?
- To provide aesthetic support for the forms
- To facilitate easier removal of the column forms
- To secure the reinforcement bars in place (correct)
- To enhance the insulation of the column
Which step is NOT required before closing the column forms?
Which step is NOT required before closing the column forms?
- Ensure all accessories are installed
- Check the installation of downspouts and conduits
- Verify the vertical position of reinforcement
- Install a decorative finish on the forms (correct)
How does the simultaneous concreting of columns and walls optimize the construction process?
How does the simultaneous concreting of columns and walls optimize the construction process?
- By eliminating the need for reinforcing bars
- By reducing the amount of construction labor needed
- By allowing continuous horizontal bars across column reinforcement (correct)
- By requiring more elaborate formwork sets
What is a key characteristic of a spiral column?
What is a key characteristic of a spiral column?
What is the recommended action if different concrete mixes are used for columns and walls during construction?
What is the recommended action if different concrete mixes are used for columns and walls during construction?
What is a potential issue to avoid during the installation of column forms?
What is a potential issue to avoid during the installation of column forms?
What is the main advantage of using galvanized wire or machine bolts for bracing column forms?
What is the main advantage of using galvanized wire or machine bolts for bracing column forms?
What type of beam is supported on one end with the other end projecting beyond the support?
What type of beam is supported on one end with the other end projecting beyond the support?
Which of the following describes a Simple Beam?
Which of the following describes a Simple Beam?
What is the primary purpose of a girder in a structure?
What is the primary purpose of a girder in a structure?
Which of the following statements best defines stress in materials?
Which of the following statements best defines stress in materials?
What characterizes a T-Beam in construction?
What characterizes a T-Beam in construction?
How does the design influence building materials in a structure?
How does the design influence building materials in a structure?
What effect do external forces have on a structure?
What effect do external forces have on a structure?
In the context of beams, what is meant by a Continuous Beam?
In the context of beams, what is meant by a Continuous Beam?
Which type of stress results from a structure being pulled apart?
Which type of stress results from a structure being pulled apart?
What type of load is a dead load characterized as?
What type of load is a dead load characterized as?
Which of the following loads is considered an environmental load?
Which of the following loads is considered an environmental load?
What is the effect of a gravitational force on a homogeneous concrete beam?
What is the effect of a gravitational force on a homogeneous concrete beam?
In terms of bending moments, what occurs when a beam bends downward?
In terms of bending moments, what occurs when a beam bends downward?
Which type of load is related to the occupancy of a structure?
Which type of load is related to the occupancy of a structure?
What distinguishes shear stress from other types of stress?
What distinguishes shear stress from other types of stress?
When describing concentrated loads, which statement is accurate?
When describing concentrated loads, which statement is accurate?
Which method of connecting structural steels involves the use of a heated fastener?
Which method of connecting structural steels involves the use of a heated fastener?
What is the recommended diameter for punching a hole for a 19 mm rivet?
What is the recommended diameter for punching a hole for a 19 mm rivet?
What happens to the rivet shank during the installation process?
What happens to the rivet shank during the installation process?
What is a common failure mode for rivets due to force applied across the joint?
What is a common failure mode for rivets due to force applied across the joint?
Which of the following is NOT a method of connecting structural steels?
Which of the following is NOT a method of connecting structural steels?
When installing rivets, what should be ensured about the holes in the connected plates?
When installing rivets, what should be ensured about the holes in the connected plates?
What type of tools are primarily used to install rivets?
What type of tools are primarily used to install rivets?
What factor influences the size of rivets chosen for a project?
What factor influences the size of rivets chosen for a project?
What is the primary purpose of an Open Web Steel Joist?
What is the primary purpose of an Open Web Steel Joist?
Which type of truss is classified as the most economical for covering a wide span?
Which type of truss is classified as the most economical for covering a wide span?
What are purlins primarily used for in a roofing structure?
What are purlins primarily used for in a roofing structure?
Which of the following is NOT a type of welded joint?
Which of the following is NOT a type of welded joint?
Which of the following welding techniques is most preferred in structural steel connections?
Which of the following welding techniques is most preferred in structural steel connections?
What does the term 'penetration' refer to in welding?
What does the term 'penetration' refer to in welding?
What diameter do sag rods usually have in a typical roofing structure?
What diameter do sag rods usually have in a typical roofing structure?
Which of the following types of trusses is NOT typically used in construction?
Which of the following types of trusses is NOT typically used in construction?
What is the primary purpose of placing additional straight reinforcing bars on the top of a beam?
What is the primary purpose of placing additional straight reinforcing bars on the top of a beam?
What is a recommended minimum clear distance between main reinforcing bars?
What is a recommended minimum clear distance between main reinforcing bars?
What is the consequence of using lap splices on bars larger than No. 11 or 35 mm in diameter?
What is the consequence of using lap splices on bars larger than No. 11 or 35 mm in diameter?
Why is staggering splices necessary in high-stress areas?
Why is staggering splices necessary in high-stress areas?
What is a disadvantage of using bent bars in beam design?
What is a disadvantage of using bent bars in beam design?
What is the preferred number of bars to use for main reinforcement when bent-up bars are needed?
What is the preferred number of bars to use for main reinforcement when bent-up bars are needed?
What is the maximum distance that protective covering for steel bars must extend from the face of the beam?
What is the maximum distance that protective covering for steel bars must extend from the face of the beam?
How should bundled bars be spliced according to the guidelines?
How should bundled bars be spliced according to the guidelines?
Flashcards
Beam
Beam
A structural member designed to support transverse loads primarily resting on supports at its ends.
Girder
Girder
A type of beam supporting multiple smaller beams.
Simple Beam
Simple Beam
A beam supported at both ends, free to rotate, without any restraints.
Restraint
Restraint
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Continuous Beam
Continuous Beam
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Semi-Continuous Beam
Semi-Continuous Beam
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Cantilever Beam
Cantilever Beam
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T-Beam
T-Beam
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Temporary Brace for Column Installation
Temporary Brace for Column Installation
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Verifying Reinforcement and Side Form Installation
Verifying Reinforcement and Side Form Installation
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PreInstalling Accessories before Form Closure
PreInstalling Accessories before Form Closure
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Wider Form Cover Installation
Wider Form Cover Installation
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Concreting Columns after Wall Laying
Concreting Columns after Wall Laying
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Installing Pipes in Column Space
Installing Pipes in Column Space
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Cleaning Column Space Before Form Installation
Cleaning Column Space Before Form Installation
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Simultaneous Concreting of Columns and Walls
Simultaneous Concreting of Columns and Walls
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Compressive Stress
Compressive Stress
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Tensile Stress
Tensile Stress
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Shear Stress
Shear Stress
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Torsional Stress
Torsional Stress
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Dead Load
Dead Load
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Live Load
Live Load
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Environmental Load
Environmental Load
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Bending Moment
Bending Moment
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Open Web Steel Joist
Open Web Steel Joist
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Roof Truss
Roof Truss
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Types of Roof Trusses
Types of Roof Trusses
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Purlin
Purlin
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Roof Panel
Roof Panel
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Sag Rod
Sag Rod
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Arc Welding
Arc Welding
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Butt Joint
Butt Joint
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Rivet
Rivet
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Bolt
Bolt
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Riveting
Riveting
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Hole alignment
Hole alignment
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Bucking-up tool
Bucking-up tool
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Riveter
Riveter
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Rivet Size
Rivet Size
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Rivet Strength
Rivet Strength
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No Bent Bars Reinforcement
No Bent Bars Reinforcement
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Straight Bars Extension in No Bent Bars
Straight Bars Extension in No Bent Bars
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Straight Bars at Beam Center
Straight Bars at Beam Center
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Minimum Spacing of Reinforcing Bars
Minimum Spacing of Reinforcing Bars
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Spacing of Multiple Bar Layers
Spacing of Multiple Bar Layers
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Splicing of Reinforcement
Splicing of Reinforcement
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Lap Splicing Restrictions
Lap Splicing Restrictions
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Hooks and Bends Requirements
Hooks and Bends Requirements
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Study Notes
Building Construction (Chapters 8, 9, and 10)
- The presentation covers building construction, specifically focusing on Chapters 8, 9, and 10.
- The presenters are Adriosula, Anico, Artates, Girona, Isada, and Papa.
- The presenter's guide is by Max Fajardo.
Chapter 8: Post and Columns
- Definitions:
- Post: A vertical timber or metal support not continuous from story to story. Its shape can be cylindrical, square, or other geometric forms.
- Column: A vertical structure, made of stone, concrete, steel, or a combination of these, to bear loads.
- Storey: A space between floor levels or a floor and roof.
- Wooden Post:
- Made traditionally from high-quality lumber from the first or second group for strength and durability.
- Treated lumber is used when hardwood is lacking.
- Potentially needs bracing and support during construction to avoid damage to the foundation.
- Drawbacks in commercial lumber include inferior quality from younger trees, hardwood scarcity making durable materials difficult to find, susceptibility to decay from moisture, insects, worms, and termites, as well as cracks between wooden posts and concrete walls.
- Erecting wooden posts demands precision and appropriate techniques to ensure stability and durability. The steps include dressing and cutting the bottom, marking for vertical alignment, marking girder and girt attachment points, erecting the post with braces or rope and pulley, checking vertical alignment using a plumb bob, nailing to a post strap, and bolting the post into its permanent position.
- Reinforced Concrete Columns:
- The most common material for columns today, regardless of size or height.
- Materials include concrete, steel reinforcement (rebar), binding wire, formwork, and admixtures.
- Classified as short or long columns based on the ratio of unsupported height to the shortest lateral dimension of the cross-section.
Chapter 9: Platform-Floor Structure
- Wood Floor System:
- The floor framing, or platform, part of a building that's supported by posts, columns, and beams, has advanced due to improvements in machinery and sawing techniques, which introduced structural lumber in various standard sizes allowing for assembly on site.
- Design considerations include live loads (movable – people, furniture), dead load (static load of materials carrying the live load), construction material choice (e.g., lumber, concrete, steel), and the sizing and spacing of structural members, as well as spans between supporting walls.
- Common types of wood floor framing include plank and beam, panelized, and conventional.
Chapter 10: Steel Framing
- Introduction:
- The method of steel framing's usage in construction dates back to the Greek and Egyptian civilizations.
- Modern prefab approaches include pre-cut steel posts, beams and foundations using polyvinyl fluoride film for sheathing and siding, and vinyl-finished interior wall boards and complete factory-assembled flooring. Reinforced plastic showers and roofs are also components of these prefabricated materials
- Structural Shapes:
- Common structural steel shapes include square, round, plate, and angle bars, channels, I-beams, tee, H-column, wide flange, and zee.
- Structural Steel Grades:
- ASTM A7 is no longer a standard structural steel type, though structural steel ASTM A36 is more common
- Newer steel grades, such as ASTM A36, A373, A440, A441, and A242 (high-strength structural grades) are available. ASTM A36 is stronger than A7 but easier to weld.
- Fasteners (rivets and bolts):
- Rivets and bolts are used for connecting structural steel; classifications of the most common types include ASTM A141, ASTM A195, and ASTM A406.
- Methods for installation include drilling, heating rivets for insertion and using tools to shape the rivets for a secure connection.
- Connections of Structural Members:
- Column base plates: Spreading column load to foundation, proper plate sizing for load distribution, using plates for column attachment.
- Column splices: Joining columns using riveted or welded splice plates for load transfer and alignment.
- Beam bearing plates: Providing support for uniformly distributed beam loads using plates that are usually not riveted or welded to the beam flange.
- Beam connections to columns: Varying connection methods to columns using different angles. Seat connections are common with stiffeners for larger beams and clip plate angles for beam connections to columns with smaller reactions.
- Plate girders: Alternative to rolled steel section for greater span requirements, plate girders are built up from steel plates and angles connected using rivets or welding in I-shaped or box designs
- Web plates and intermediate stiffeners: Requirements for web plate thickness, intermediate stiffener spacing in plate girder designs for preventing buckling, and other design considerations.
- Roof trusses: A basic framework design suitable for wide-span support. Different truss types exist, each with its own unique configuration.
- Purlins: Beams on rafters supporting the load of the roof to the truss at panel points.
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