Week 5 (Material Handling & Inventory) Flashcards
(19 cards)
What percentage of civil projects costs do materials typically account for?
~60%
Why is “Just-in-Time” delivery impractical for construction?
Timing challenges require on-site storage
Name a weather-sensitive construction material
Cement
How should timber be stored on a construction site?
Elevated, covered, on a sloped surface
What is the Economic Order Quantity (EOQ) formula?
Q* = SQRT(2SD/H)
Where,
S = Setup (ordering) costs
D = Demand
H = Holding costs
What does Economic Order Quantity (EOQ) aim to minimise?
Total cost of ordering and holding inventory
What is a risk of overstocking safety inventory
Wasted resources and storage space
What happens to material ownership after delivery?
Transfers to the client
What standard governs traffic management for material delivery?
Manual of Uniform Traffic Control Devices (MUTCD) Part 3
Why is crane access important for material storage?
Facilitates efficient handling and placement
Name a weather-resistant construction material
Steel
What is the purpose of safety inventory?
Cover unexpected demand to prevent delays in project
What is a holding cost in inventory management?
Cost of storing materials (e.g. space, security)
What assumption limits Economic Order Quantity’s (EOQ’s) real-world use?
Constant demand or instant replenishment
Who is responsible for client-supplied materials on-site?
Contractor (for protection)
What is a lay down area used for?
Storing materials and equipment
Why are schedules required for material payments?
Support client payment claims
What environmental agency might restrict material storage?
Department of Environment and Heritage Protection (DEHP)
How should cement bags be stored to prevent degradation?
Under tarps, elevated, in a dry area
