Podcast
Questions and Answers
What type of plywood is required for forming where a smooth surface is essential?
What type of plywood is required for forming where a smooth surface is essential?
- Grade A (correct)
- Grade C
- Grade D
- Grade B
Which material is not mentioned as a major component for forms and shoring construction?
Which material is not mentioned as a major component for forms and shoring construction?
- Steel
- Concrete (correct)
- Fiber Boards
- Lumber
What is a significant characteristic of phenolic boards?
What is a significant characteristic of phenolic boards?
- They require extensive preparation.
- They are not waterproof.
- They are made from wood pulp.
- They are low-cost and mold-resistant. (correct)
What type of steel form is typically used for concrete joist construction?
What type of steel form is typically used for concrete joist construction?
Which lumber condition is advised for retaining structures?
Which lumber condition is advised for retaining structures?
What is the primary purpose of staking-out the building?
What is the primary purpose of staking-out the building?
Which is the first step to take before staking-out a building?
Which is the first step to take before staking-out a building?
What does driving stakes and stretching a string between them represent in the staking-out process?
What does driving stakes and stretching a string between them represent in the staking-out process?
What should be measured from the front corner monuments during the staking-out process?
What should be measured from the front corner monuments during the staking-out process?
After driving stake A, what is the next step in marking additional corners for the building?
After driving stake A, what is the next step in marking additional corners for the building?
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Study Notes
Preparation for Construction
- Staking-out involves establishing boundary lines for foundation layout before construction begins.
- Batterboards are wooden boards placed at corners to guide excavation and foundation setup.
Formwork & Shoring
- Types of Formwork:
- Lumber forms should be partially seasoned for strength.
- Plywood forms must be waterproof, Grade "A," and at least ½" thick for durability.
- Steel forms may be used for concrete joist construction and can include pans and decking.
- Phenolic boards are waterproof and mold-resistant, made from phenol and formaldehyde, ideal for various construction applications.
Construction Tools & Equipment
- Tools are categorized into four main groups:
- Hand tools reliant on manual power.
- Pavers for placing, spreading, and finishing concrete or asphalt.
- Compactors for soil and material compaction.
Major Parts of a Building
- Superstructure: Above-ground components of a building.
- Substructure: Below-ground, habitable components of a building.
- Foundation: The structural base transferring load to the soil.
Types of Substructures
- Slab on Fill: A slab built directly on the ground.
- Crawl Space: An unfinished area below the first floor, typically less than full-story height.
Soil Considerations
- Types of earth materials affecting foundation stability include:
- Loam: Contains a proportion of vegetable matter.
- Peat: Compressed vegetable matter influencing load-bearing capabilities.
Allowable Loads on Foundation Beds
- Prior investigation is essential to determine the allowable unit load on foundation beds.
- Uniform site conditions allow a uniform load, while varying conditions necessitate load adjustments to minimize differential settlement during construction.
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