diff --git a/Sources/DatabaseClient/ComponentPressureLoss.swift b/Sources/DatabaseClient/ComponentPressureLoss.swift
new file mode 100644
index 0000000..adb0100
--- /dev/null
+++ b/Sources/DatabaseClient/ComponentPressureLoss.swift
@@ -0,0 +1,146 @@
+import Dependencies
+import DependenciesMacros
+import Fluent
+import Foundation
+import ManualDCore
+
+extension DatabaseClient {
+  @DependencyClient
+  public struct ComponentLoss: Sendable {
+    public var create:
+      @Sendable (ComponentPressureLoss.Create) async throws -> ComponentPressureLoss
+    public var delete: @Sendable (ComponentPressureLoss.ID) async throws -> Void
+    public var fetch: @Sendable (Project.ID) async throws -> ComponentPressureLoss
+    public var get: @Sendable (ComponentPressureLoss.ID) async throws -> ComponentPressureLoss?
+  }
+}
+
+extension DatabaseClient.ComponentLoss: TestDependencyKey {
+  public static let testValue = Self()
+}
+
+extension DatabaseClient.ComponentLoss {
+  public static func live(database: any Database) -> Self {
+    .init(
+      create: { request in
+        let model = try request.toModel()
+        try await model.save(on: database)
+        return try model.toDTO()
+      },
+      delete: { id in
+        guard let model = try await ComponentLossModel.find(id, on: database) else {
+          throw NotFoundError()
+        }
+        try await model.delete(on: database)
+      },
+      fetch: { projectID in
+        guard
+          let model = try await ComponentLossModel.query(on: database)
+            .filter("projectID", .equal, projectID)
+            .first()
+        else {
+          throw NotFoundError()
+        }
+        return try model.toDTO()
+
+      },
+      get: { id in
+        try await ComponentLossModel.find(id, on: database).map { try $0.toDTO() }
+      }
+    )
+  }
+}
+
+extension ComponentPressureLoss.Create {
+
+  func toModel() throws(ValidationError) -> ComponentLossModel {
+    try validate()
+    return .init(name: name, value: value, projectID: projectID)
+  }
+
+  func validate() throws(ValidationError) {
+    guard !name.isEmpty else {
+      throw ValidationError("Component loss name should not be empty.")
+    }
+    guard value > 0 else {
+      throw ValidationError("Component loss value should be greater than 0.")
+    }
+    guard value < 1.0 else {
+      throw ValidationError("Component loss value should be less than 1.0.")
+    }
+  }
+}
+
+extension ComponentPressureLoss {
+  struct Migrate: AsyncMigration {
+    let name = "CreateComponentLoss"
+
+    func prepare(on database: any Database) async throws {
+      try await database.schema(ComponentLossModel.schema)
+        .id()
+        .field("name", .string, .required)
+        .field("value", .double, .required)
+        .field("createdAt", .datetime)
+        .field("updatedAt", .datetime)
+        .foreignKey("projectID", references: ProjectModel.schema, "id", onDelete: .cascade)
+        .unique(on: "projectID", "name")
+        .create()
+    }
+
+    func revert(on database: any Database) async throws {
+      try await database.schema(ComponentLossModel.schema).delete()
+    }
+  }
+}
+
+final class ComponentLossModel: Model, @unchecked Sendable {
+
+  static let schema = "component_loss"
+
+  @ID(key: .id)
+  var id: UUID?
+
+  @Field(key: "name")
+  var name: String
+
+  @Field(key: "value")
+  var value: Double
+
+  @Timestamp(key: "createdAt", on: .create, format: .iso8601)
+  var createdAt: Date?
+
+  @Timestamp(key: "updatedAt", on: .update, format: .iso8601)
+  var updatedAt: Date?
+
+  @Parent(key: "projectID")
+  var project: ProjectModel
+
+  init() {}
+
+  init(
+    id: UUID? = nil,
+    name: String,
+    value: Double,
+    createdAt: Date? = nil,
+    updatedAt: Date? = nil,
+    projectID: Project.ID
+  ) {
+    self.id = id
+    self.name = name
+    self.value = value
+    self.createdAt = createdAt
+    self.updatedAt = updatedAt
+    $project.id = projectID
+  }
+
+  func toDTO() throws -> ComponentPressureLoss {
+    try .init(
+      id: requireID(),
+      projectID: $project.id,
+      name: name,
+      value: value,
+      createdAt: createdAt!,
+      updatedAt: updatedAt!
+    )
+  }
+}
diff --git a/Sources/DatabaseClient/Interface.swift b/Sources/DatabaseClient/Interface.swift
index 91ffff9..57040d9 100644
--- a/Sources/DatabaseClient/Interface.swift
+++ b/Sources/DatabaseClient/Interface.swift
@@ -16,6 +16,7 @@ public struct DatabaseClient: Sendable {
   public var projects: Projects
   public var rooms: Rooms
   public var equipment: Equipment
+  public var componentLoss: ComponentLoss
 }
 
 extension DatabaseClient: TestDependencyKey {
@@ -23,7 +24,8 @@ extension DatabaseClient: TestDependencyKey {
     migrations: .testValue,
     projects: .testValue,
     rooms: .testValue,
-    equipment: .testValue
+    equipment: .testValue,
+    componentLoss: .testValue
   )
 
   public static func live(database: any Database) -> Self {
@@ -31,7 +33,8 @@ extension DatabaseClient: TestDependencyKey {
       migrations: .liveValue,
       projects: .live(database: database),
       rooms: .live(database: database),
-      equipment: .live(database: database)
+      equipment: .live(database: database),
+      componentLoss: .live(database: database)
     )
   }
 }
@@ -51,6 +54,7 @@ extension DatabaseClient.Migrations: DependencyKey {
   public static let liveValue = Self(
     run: {
       [
+        ComponentPressureLoss.Migrate(),
         EquipmentInfo.Migrate(),
         Project.Migrate(),
         Room.Migrate(),
diff --git a/Sources/ManualDCore/ComponentPressureLosses.swift b/Sources/ManualDCore/ComponentPressureLosses.swift
index 9128b24..d7b1a21 100644
--- a/Sources/ManualDCore/ComponentPressureLosses.swift
+++ b/Sources/ManualDCore/ComponentPressureLosses.swift
@@ -1,5 +1,50 @@
 import Foundation
 
+public struct ComponentPressureLoss: Codable, Equatable, Identifiable, Sendable {
+
+  public let id: UUID
+  public let projectID: Project.ID
+  public let name: String
+  public let value: Double
+  public let createdAt: Date
+  public let updatedAt: Date
+
+  public init(
+    id: UUID,
+    projectID: Project.ID,
+    name: String,
+    value: Double,
+    createdAt: Date,
+    updatedAt: Date
+  ) {
+    self.id = id
+    self.projectID = projectID
+    self.name = name
+    self.value = value
+    self.createdAt = createdAt
+    self.updatedAt = updatedAt
+  }
+}
+
+extension ComponentPressureLoss {
+  public struct Create: Codable, Equatable, Sendable {
+
+    public let projectID: Project.ID
+    public let name: String
+    public let value: Double
+
+    public init(
+      projectID: Project.ID,
+      name: String,
+      value: Double,
+    ) {
+      self.projectID = projectID
+      self.name = name
+      self.value = value
+    }
+  }
+}
+
 public typealias ComponentPressureLosses = [String: Double]
 
 #if DEBUG
diff --git a/Sources/ManualDCore/Routes/ApiRoute.swift b/Sources/ManualDCore/Routes/ApiRoute.swift
index 1f3e7ed..762fe11 100644
--- a/Sources/ManualDCore/Routes/ApiRoute.swift
+++ b/Sources/ManualDCore/Routes/ApiRoute.swift
@@ -10,6 +10,8 @@ extension SiteRoute {
 
     case project(Self.ProjectRoute)
     case room(Self.RoomRoute)
+    case equipment(Self.EquipmentRoute)
+    case componentLoss(Self.ComponentLossRoute)
 
     public static let rootPath = Path {
       "api"
@@ -25,6 +27,14 @@ extension SiteRoute {
         rootPath
         RoomRoute.router
       }
+      Route(.case(Self.equipment)) {
+        rootPath
+        EquipmentRoute.router
+      }
+      Route(.case(Self.componentLoss)) {
+        rootPath
+        ComponentLossRoute.router
+      }
     }
 
   }
@@ -109,7 +119,7 @@ extension SiteRoute.Api {
     case fetch(projectID: Project.ID)
     case get(id: EquipmentInfo.ID)
 
-    static let rootPath = "rooms"
+    static let rootPath = "equipment"
 
     public static let router = OneOf {
       Route(.case(Self.create)) {
@@ -141,3 +151,44 @@ extension SiteRoute.Api {
     }
   }
 }
+
+extension SiteRoute.Api {
+
+  public enum ComponentLossRoute: Sendable, Equatable {
+    case create(ComponentPressureLoss.Create)
+    case delete(id: ComponentPressureLoss.ID)
+    case fetch(projectID: Project.ID)
+    case get(id: ComponentPressureLoss.ID)
+
+    static let rootPath = "componentLoss"
+
+    public static let router = OneOf {
+      Route(.case(Self.create)) {
+        Path { rootPath }
+        Method.post
+        Body(.json(ComponentPressureLoss.Create.self))
+      }
+      Route(.case(Self.delete(id:))) {
+        Path {
+          rootPath
+          ComponentPressureLoss.ID.parser()
+        }
+        Method.delete
+      }
+      Route(.case(Self.fetch(projectID:))) {
+        Path { rootPath }
+        Method.get
+        Query {
+          Field("projectID") { Project.ID.parser() }
+        }
+      }
+      Route(.case(Self.get(id:))) {
+        Path {
+          rootPath
+          ComponentPressureLoss.ID.parser()
+        }
+        Method.get
+      }
+    }
+  }
+}