Author: John Martin

  • What is a Warehouse and What are the types of Warehouses?

    What is a Warehouse and What are the types of Warehouses?

    Warehouses are the unsung heroes of the supply chain, quietly ensuring that products move seamlessly from manufacturers to businesses and consumers. Whether you’re running an e-commerce store, a manufacturing business, or a retail operation, choosing the right type of warehouse can make all the difference. Let’s break down the different types of warehouses and how they fit into various business needs.

    There are several types of warehouses, each serving different business needs: Private warehouses are owned by companies for exclusive inventory storage, while public warehouses offer rented storage solutions. Distribution centers focus on rapid product movement, whereas fulfillment centers handle e-commerce orders. Cold storage warehouses maintain perishable goods at controlled temperatures, and bonded warehouses store imported items before customs duties are paid. Smart warehouses use automation and AI for efficiency, while cooperative warehouses allow businesses to share storage space. Bulk storage warehouses handle large raw materials, and hazardous goods warehouses store dangerous materials under strict regulations.

    1. Private Warehouses

    Think of private warehouses as exclusive storage spaces—owned and operated by manufacturers, wholesalers, or retailers who want full control over their inventory. These warehouses offer stability and efficiency, but they come at a cost. Since they require significant investment, they’re usually best suited for businesses with large, steady inventory needs.

    2. Public Warehouses

    Not ready to invest in your own warehouse? Public warehouses are a great option. These are storage facilities available for rent, managed by third-party providers. They give businesses the flexibility to store goods without long-term commitments, making them ideal for startups, seasonal businesses, or those testing new markets.

    3. Distribution Centers

    Speed is the name of the game for distribution centers. Unlike traditional warehouses that focus on long-term storage, distribution centers are all about moving goods in and out quickly. They’re strategically located to ensure products reach retailers or customers in the shortest time possible—perfect for businesses that need a rapid supply chain.

    4. Fulfillment Centers

    If you’ve ever ordered something online and received it within a day or two, a fulfillment center was likely involved. These warehouses specialize in e-commerce order processing, handling everything from packaging to shipping. Companies like Amazon and Shopify rely on fulfillment centers to ensure smooth and efficient deliveries to customers.

    5. Cold Storage Warehouses

    Not all products can sit on a shelf at room temperature. Cold storage warehouses are designed to store perishable goods like food, pharmaceuticals, and chemicals under controlled conditions. Maintaining the right temperature and humidity levels is crucial to preserving product quality and meeting safety regulations.

    6. Bonded Warehouses

    Importing goods? Bonded warehouses offer a solution for businesses dealing with international shipments. These government-regulated storage facilities allow businesses to store imported goods without immediately paying customs duties. Duties are only paid when the products leave the warehouse for sale—helping businesses manage cash flow more effectively.

    7. Smart Warehouses

    Technology is transforming warehousing, and smart warehouses are at the forefront. Equipped with automation, artificial intelligence, and robotics, these warehouses reduce labor costs and improve efficiency. Automated storage and retrieval systems (AS/RS) and real-time inventory tracking make operations smoother and more accurate.

    8. Cooperative Warehouses

    Small businesses and organizations often struggle with warehousing costs. Cooperative warehouses provide a cost-effective solution by allowing multiple businesses to share storage space and operational expenses. It’s a win-win: reduced costs and access to better facilities without the burden of owning a warehouse outright.

    9. Bulk Storage Warehouses

    Industries dealing with large quantities of raw materials—think grains, coal, or minerals—need specialized storage. Bulk storage warehouses are built to handle heavy and voluminous inventory, ensuring products are stored safely and efficiently until they’re ready for distribution.

    10. Hazardous Goods Warehouses

    Storing hazardous materials like chemicals, explosives, or flammable substances requires strict safety protocols. Hazardous goods warehouses are designed to meet regulatory requirements and ensure these materials are stored under the safest possible conditions.

  • How to calculate Center of Gravity Method (Supply chain)

    How to calculate Center of Gravity Method (Supply chain)

    Lets say you have 3 project or construction sites at Ohio, Michigan, and Illinois.

    You will need to find a warehouse willing to support these projects at once.

    Where in the US would be the optimal warehouse location considering materials are imported from any US port?

    Academically many supply chain managers recommend center of gravity method. However fair warning you need to also factor in:

    • Does this location have enough labor?
    • Does it have a major highway?

    Many people failed due to lack of labor to support the warehouse.

    Center of Gravity is for calculating distances

    A company operates three project sites across different states in the U.S. and needs to determine the best location for a new warehouse that minimizes transportation costs. The company imports materials through various ports and distributes them to these project sites.

    Project Site 1: Located at (X₁, Y₁) with an annual shipment volume of Q₁

    Project Site 2: Located at (X₂, Y₂) with an annual shipment volume of Q₂

    Project Site 3: Located at (X₃, Y₃) with an annual shipment volume of Q₃

    Each project site has different shipment volumes, which need to be considered when selecting the warehouse location. The objective is to find a central warehouse location that minimizes the total transportation distance, weighted by shipment volume.

    X-coordinate of the optimal location:

    X = (Sum of (X coordinate * Shipment Volume)) / (Sum of Shipment Volume)

    Y-coordinate of the optimal location:

    Y = (Sum of (Y coordinate * Shipment Volume)) / (Sum of Shipment Volume)

    Now using realistic options

    Realistically that coordinate you calculate warehouse won’t exist. However find the closet warehouse and calculate the distance to coordinates you created.

    In advance situation companies utilize the capacitated facility location problem (CFLP) is an optimization model in supply chain management that selects the best sites based on geographic coordinates, capacity, and production constraints. Additional constraints, such as proximity to a port terminal, can be included to refine the solution.

    https://scipbook.readthedocs.io/en/latest/flp.html

  • How to find a third-party logistics (3PL)?

    How to find a third-party logistics (3PL)?

    E-commerce brands usually are looking for third-party logistics to distribute their product to customers. This helps reduce cost compared to high level logistics like UPS and FedEx.

    Finding a reliable and cost effective 3pl is really difficult, usually companies make this connection through word of mouth or referrals. Warehousing List is trying to make a quality list of warehouse provides.

    Customers for 3pl usually need:

    • House inventory for customers
    • Be able to pick up and ship
    • Can the 3pl handle large sizes >1000 pounds
    • Or small items that are fragile

    1. Decide on a location

    The location and distant is going to effect the cost and delivery time for your packages. This could have impact on your customers satisfaction.

    Also taxes, depending on the state your packages shipping will be taxed. Factor that in the cost of that with the location.

    2. Search and walk to business in person.

    Google search, reddit search, and use directories like warehousinglist.com, https://3plfinder.com/or Fulfill.com that provides list of businesses.

    Go to google search for 3pl this Boston below.

    3. Tracking 3PLs

    Start tracking in list of 3pls and reaching out but also follow many times with 3pls. It can be difficult for 3pls to specialize to important to establish a partner ship and track your partnerships.

    You can get free CRM tracker on execlsheet or googlesheets like this.

    You need to follow up and get to the quotation stage.

    Basically collect all the quotes into the spreadsheet.

    4. Provide deadlines with 3pls

    Your goal is to start a partnership by giving a specific date and sometimes they cannot accommodate and that is ok you move on to the next provider. However they could be useful later.

    5. Prepare your Order before hand

    3pls are going ask you these questions and more:

    • What is the number of orders in a month?
    • What is the storage requirements? cold or fragile?
    • What is the quantity of inbound supplies?
    • What are the last mile delivery requirements?

    They need these answers to calculate their own cost for providing the service to you.

    6. Compare Quotes and Review your interactions

    You can quickly compare the cheapest offering to the most expensive. However reflect on who was responsive and who was not responsive or even dismissive. You want to work with people who are responsive to your needs for what you are paying for.