Construction Flashcards
Free Float
Delay an activity can do without affecting the succesor only
Total Float
Delay an activity can do without affecting the completing entire project
Define the term “concrete mix design” and explain the factors influencing the selection of concrete proportions.
Concrete mix design involves determining the optimal combination of ingredients such as cement, aggregates, water, and admixtures to achieve the desired properties and performance of concrete, with factors influencing the selection of proportions including strength requirements, workability, durability, and specific project conditions.
Discuss the properties and applications of common construction materials, such as aggregates and steel reinforcement.
Aggregates, like gravel and sand, provide the bulk and stability in concrete and asphalt mixtures, while steel reinforcement enhances the tensile strength and ductility of structures, collectively ensuring the integrity and durability of construction materials in various applications.
Explain the concept of a lump-sum contract and its advantages and disadvantages.
A lump-sum contract is a fixed-price agreement where the contractor agrees to complete a project for a predetermined total cost, providing the advantage of cost certainty for the client but carrying the disadvantage of limited flexibility in accommodating changes during construction.
Discuss the purpose and components of a construction bid.
A construction bid serves the purpose of providing a detailed and formal offer to undertake a construction project, typically including cost estimates, project schedules, and proposed methodologies, and its key components include the bid price, project specifications, and contractual terms.
Explain the differences between top-down and bottom-up construction methods and their applications in building projects
Top-down construction involves building from the upper levels downward, often used in deep excavation and high-rise construction, while bottom-up construction starts from the foundation and progresses upward, typically employed in conventional building projects, with each method selected based on project-specific considerations and constraints.
