# Google Tiles vertical placement

**URL:** <https://community.cesium.com/t/google-tiles-vertical-placement/28515>\
**Category:** CesiumJS\
**Created:** [December 4, 2023, 6:28pm UTC](https://community.cesium.com/t/google-tiles-vertical-placement/28515 "2023-12-04T18:28:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![StanB](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/stanb/32/20909_2.png) [@StanB](https://community.cesium.com/u/StanB)\
**Post date:** [December 4, 2023, 6:28pm UTC](https://community.cesium.com/t/google-tiles-vertical-placement/28515/1 "2023-12-04T18:28:44Z")

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Strugling to synchronize google 3Dtiles on cesium.js with terrain and 3D buildings within our application. As a result we have a gap for our city on Z coordinate around 40 meters. What could be the reason for that ?

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**Author:** ![bertt](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/bertt/32/2702_2.png) [@bertt](https://community.cesium.com/u/bertt)\
**Post date:** [December 4, 2023, 7:29pm UTC](https://community.cesium.com/t/google-tiles-vertical-placement/28515/2 "2023-12-04T19:29:03Z")

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see [Adding objects to Google Photorealistic 3D Tiles | bert](https://bertt.wordpress.com/2023/07/11/adding-objects-to-google-photorealistic-3d-tiles/)

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**Author:** ![StanB](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/stanb/32/20909_2.png) [@StanB](https://community.cesium.com/u/StanB)\
**Post date:** [December 7, 2023, 4:12am UTC](https://community.cesium.com/t/google-tiles-vertical-placement/28515/3 "2023-12-07T04:12:37Z")

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Thank you Bertt - this is what we suspected. You are proposing to recalculatie Z coordinates of building (in fact - terrain. Lidar and all the layers we have in the complete model).  
Is there any way to manipulate GoogleTiles in a sense of vertical placement not to affect whole the city model we created

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**Author:** ![StanB](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/stanb/32/20909_2.png) [@StanB](https://community.cesium.com/u/StanB)\
**Post date:** [December 7, 2023, 4:15am UTC](https://community.cesium.com/t/google-tiles-vertical-placement/28515/4 "2023-12-07T04:15:13Z")

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Realize that it can be tricky as there is a need of recalculation on the fly of all dense nodes of the mesh (if possible at all)