The Roman standard Siege Tower had 3 sections: the lower level with a batterig ram, the intermediate level with room for soldiers and drawbridge device and an upper level for archers and missile troops.
As usual [see Vitruvius' and Vegetius' books], the tower was entirely covered with a mattress of cattle raw skin or with unfinished leather sacks stuffed with fire-proof materials or with materials treated to be fire-proof. These sacks and mattresses made the Siege Tower sufficiently fire-proof during attack, also because a group of soldier in the tower was always trained to extinguish fire using special leather water sacks [the siphones].
The head of the Greek and Roman Battering Ram usually had the ram snout in frontal position not the ram top-head [see the Olympia Ram Head, the Trajan's Colum Ram Head].
The Battering Ram Siege Tower probably appeared for the first time during the Empire of Augustus or Tiberius [first half 1st century AD] and was largely used during the wars of the end of the 1st century AD.
The Roman towers used before that date [i.e. Julius Caesar] probably were without incorporated battering ram but always with the heavy protective leather cover. So in the package you will find a second tower without Battering ram, to be used for reconstruction works about the era before Augustus' Empire.
With Drawbridge Animation Elements and C4D editable NURBS Ropes Animation!
In the Package you will find:
A- 1 Legionary Siege Tower with batterig ram [Model De Re Militari] 
B- 1 Legionary Siege Tower without batterig ram [before Augustus era] 
C- Movable and Animatable Battering Ram with ropes 
D- Movable and Animatable Drawbridge with ropes 
E- Movable and Animatable wheels 
F- C4D NURBS ready to be edited and create accurate Ropes Animations 
G- 41 Hi-DEF Photoreal Textures starting 3400x6676 
H- Alternate textures to change type of wood, leather, metal or rope colours 
I- Hi-Level of Definition of single Details.
J- Formats available: Cinema4D, 3DS, OBJ, VUE.
All the Models are prepared Hi-DEF and Photoreal, perfect for any type of Rendering and for Hi-Definition Rendering and Close-Ups!
Models Polygons and Vertices [VUE and 3DS] for C4D and OBJ Polygons are [ca /2]:
Legionary Siege Tower 1 [392769;230080]
Legionary Siege Tower 2 [280038;161432]
Drawbridge Element [16440;9788]
These models are useful for many types of sceneries, ancient sceneries but also modern ones, as for Roman re-enactment.
The Archaeo.Sys 3D series is developing high-fidelity 3D reconstruction of Objects, Architecture and Scenes from Classical Greek and Roman Antiquity.