diff --git a/Layout/default/Building/Form.php b/Layout/default/Building/Form.php
index 2be0e3670..11b7dad89 100644
--- a/Layout/default/Building/Form.php
+++ b/Layout/default/Building/Form.php
@@ -196,12 +196,27 @@
                     </div>
                   </div>
                   
+                  
+                  <div class="form-group row">
+                    <label class="col-lg-2 col-form-label" for="networksection_id">Bauabschnitt</label>
+                    <div class="col-lg-10">
+                      <select class="select2 form-control " name="networksection_id" id="networksection_id">
+                        <option></option>
+                        <?php foreach($networksections as $section): ?>
+                          <option value="<?=$section->id?>" <?=($building->networksection_id == $section->id) ? "selected='selected'" : ""?>><?=($section->network->name)?> - <?=($section->name)?></option>
+                        <?php endforeach; ?>
+                      </select>
+                    </div>
+                  </div>
+                  
+                  <!--
                   <div class="form-group row">
                     <label class="col-lg-2 col-form-label" for="description">Bauabschnitt</label>
                     <div class="col-lg-10">
                       <textarea id="description" class="form-control" name="description" rows="5"><?=$building->description?></textarea>
                     </div>
                   </div>
+                  -->
                   
                   <div class="form-group row">
                     <label class="col-lg-2 col-form-label" for="status_id">Status</label>
@@ -309,6 +324,7 @@
       },
       function(success) {
         if(success.status == "OK") {
+          //console.log(success);
           pops = success.result.pops;
           if(typeof pops !== 'object' || pops === null) {
             return true;
@@ -323,6 +339,33 @@
     );
   }
   
+  function updateSections() {
+    var network_id = $("#network_id").val();
+    if(!network_id) {
+      return true;
+    }
+    
+    $.get("<?=self::getUrl("Networksection","Api")?>",
+      {
+        "do": "getSections",
+        network_id: network_id
+      },
+      function(success) {
+        if(success.status == "OK") {
+          sections = success.result.sections;
+          if(typeof sections !== 'object' || sections === null) {
+            return true;
+          }
+          $("#networksection_id option:gt(0)").remove();
+          for(var section_id in sections) {
+            $("#networksection_id").append($("<option></option>").attr("value", pop_id).text(sections[section_id]));
+          }
+        }
+      },
+      'json'
+    );
+  }
+  
   function updatePermissions() {
     var network_id = $("#network_id").val();
     if(!network_id) {
@@ -331,7 +374,6 @@
     
     var types = ["lineworker", "pipeworker"];
     
-    // get new pops
     $.get("<?=self::getUrl("Network","Api")?>",
       {
         "do": "getPermissions",
@@ -341,6 +383,9 @@
       function(success) {
         if(success.status == "OK") {
           var perms = success.result.permissions;
+          if(typeof perms !== 'object' || perms === null) {
+            return true;
+          }
           types.forEach(function(type) {
             $("#" + type + "_id").empty();
             $("#" + type + "_id").append($("<option></option>"));
@@ -404,11 +449,13 @@
   $("#network_id").change(function() {
     updatePops();
     updatePermissions();
+    updateSections();
   });
 
   $( document ).ready(function() {
     updatePops();
     updatePermissions();
+    updateSections();
   });
   
   
diff --git a/application/Building/BuildingController.php b/application/Building/BuildingController.php
index 6b84f28fc..2efac4e0f 100644
--- a/application/Building/BuildingController.php
+++ b/application/Building/BuildingController.php
@@ -26,6 +26,7 @@ class BuildingController extends mfBaseController {
     $this->layout()->set("statuses", BuildingstatusModel::getAll());
     $this->layout()->set("pipeworkers", AddressModel::search(["addresstype" => ["pipeworker"]]));
     $this->layout()->set("lineworkers", AddressModel::search(["addresstype" => ["lineworker"]]));
+    $this->layout()->set("networksections", NetworksectionModel::getAll());
   }
   
   protected function editAction() {
diff --git a/application/Networksection/NetworksectionController.php b/application/Networksection/NetworksectionController.php
index 5e2dc4609..f9b01d812 100644
--- a/application/Networksection/NetworksectionController.php
+++ b/application/Networksection/NetworksectionController.php
@@ -84,4 +84,44 @@ class NetworksectionController extends mfBaseController {
     $this->layout()->setFlash("Bauabschnitt gelöscht", "success");
     $this->redirect("Network", "Index", [], "view=sections&net=".$network_id);
   }
+  
+  protected function apiAction() {
+    $do = $this->request->do;
+    $data = [];
+    
+    switch($do) {
+      case "getSections":
+        $return = $this->getSectionsApi();
+        break;
+      default:
+        $return = false;
+    }
+    
+    if(!is_array($return) || !count($return)) {
+      $data = ["status" => "error"];
+      $this->returnJson($data);
+    }
+    $data['status'] = "OK";
+    $data['result'] = $return;
+    $this->returnJson($data);
+  }
+  
+  private function getSectionsApi() {
+    $network_id = $this->request->network_id;
+    if(!is_numeric($network_id) || $network_id < 1) {
+      return false;
+    }
+    
+    $network = new Network($network_id);
+    if(!$network->id) {
+      return false;
+    }
+    
+    $sections = NetworksectionModel::search(['network_id' => $network_id]);
+    $return = [];
+    foreach($sections as $section) {
+      $return[$section->id] = $section->network->name." - ".$section->name;
+    }
+    return ["sections" => $return];
+  }
 }
\ No newline at end of file
diff --git a/contrib/migrations/2021-07-20-networksection.sql b/contrib/migrations/2021-07-20-networksection.sql
index cfc27541f..11252b8d0 100644
--- a/contrib/migrations/2021-07-20-networksection.sql
+++ b/contrib/migrations/2021-07-20-networksection.sql
@@ -7,4 +7,7 @@ CREATE TABLE `Networksection` (
   `create` int(10) NOT NULL,
   `edit` int(10) NOT NULL,
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci
\ No newline at end of file
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;
+
+ALTER TABLE `Building` CHANGE `description` `description` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_520_ci NULL DEFAULT NULL;
+ALTER TABLE `Building` ADD `networksection_id` INT NULL DEFAULT NULL AFTER `lineworker_id`;