diff --git a/src/chunks/animations.h b/src/chunks/animations.h
new file mode 100644
index 0000000..4f1a8c3
--- /dev/null
+++ b/src/chunks/animations.h
@@ -0,0 +1,36 @@
+#ifndef __CHUNKS_ANIMATIONS_H_INCLUDED__
+#define __CHUNKS_ANIMATIONS_H_INCLUDED__
+
+#include "../common.h"
+#include "../assets/animationsequence.h"
+#include <vector>
+
+struct AnimationsChunk
+{
+	std::vector<AnimationSequence> animations;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t AnimationsChunk::GetCount() const
+{
+	return animations.size();
+}
+
+inline uint32_t AnimationsChunk::GetSize() const
+{
+	if (animations.size() == 0)
+		return 0;
+
+	uint32_t size = sizeof(uint32_t);
+	for (uint32_t i = 0; i < animations.size(); ++i)
+	{
+		size += animations[i].name.length() + 1;   // include null terminator
+		size += sizeof(uint32_t) * 2;              // start + end
+	}
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/groups.h b/src/chunks/groups.h
new file mode 100644
index 0000000..ceb3a1e
--- /dev/null
+++ b/src/chunks/groups.h
@@ -0,0 +1,36 @@
+#ifndef __CHUNKS_GROUPS_H_INCLUDED__
+#define __CHUNKS_GROUPS_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/group.h"
+
+struct GroupsChunk
+{
+	std::vector<Group> groups;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t GroupsChunk::GetCount() const
+{
+	return groups.size();
+}
+
+inline uint32_t GroupsChunk::GetSize() const
+{
+	if (groups.size() == 0)
+		return 0;
+
+	uint32_t size = sizeof(uint32_t);  // count
+
+	for (uint32_t i = 0; i < groups.size(); ++i)
+	{
+		const Group *group = &groups[i];
+		size += group->GetSize();
+	}
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/joints.h b/src/chunks/joints.h
new file mode 100644
index 0000000..117623b
--- /dev/null
+++ b/src/chunks/joints.h
@@ -0,0 +1,37 @@
+#ifndef __CHUNKS_JOINTS_H_INCLUDED__
+#define __CHUNKS_JOINTS_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/joint.h"
+#include <vector>
+
+struct JointsChunk
+{
+	std::vector<Joint> joints;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t JointsChunk::GetCount() const
+{
+	return joints.size();
+}
+
+inline uint32_t JointsChunk::GetSize() const
+{
+	if (joints.size() == 0)
+		return 0;
+
+	uint32_t size = sizeof(uint32_t);  // count
+
+	for (uint32_t i = 0; i < joints.size(); ++i)
+	{
+		const Joint *joint = &joints[i];
+		size += joint->GetSize();
+	}
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/jointtovertices.h b/src/chunks/jointtovertices.h
new file mode 100644
index 0000000..4db1f4d
--- /dev/null
+++ b/src/chunks/jointtovertices.h
@@ -0,0 +1,37 @@
+#ifndef __CHUNKS_JOINTTOVERTICES_H_INCLUDED__
+#define __CHUNKS_JOINTTOVERTICES_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/jointvertexinfo.h"
+#include <vector>
+
+struct JointToVerticesChunk
+{
+	std::vector<JointVertexInfo> jointVertexInfo;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t JointToVerticesChunk::GetCount() const
+{
+	return jointVertexInfo.size();
+}
+
+inline uint32_t JointToVerticesChunk::GetSize() const
+{
+	if (jointVertexInfo.size() == 0)
+		return 0;
+
+	uint32_t size = sizeof(uint32_t);  // count
+
+	for (uint32_t i = 0; i < jointVertexInfo.size(); ++i)
+	{
+		const JointVertexInfo *info = &jointVertexInfo[i];
+		size += info->GetSize();
+	}
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/keyframes.h b/src/chunks/keyframes.h
new file mode 100644
index 0000000..6d36e1a
--- /dev/null
+++ b/src/chunks/keyframes.h
@@ -0,0 +1,65 @@
+#ifndef __CHUNKS_KEYFRAMES_H_INCLUDED__
+#define __CHUNKS_KEYFRAMES_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/keyframe.h"
+#include <vector>
+
+struct KeyframesChunk
+{
+	KeyframesChunk(uint32_t numJointsPerFrame);
+	virtual ~KeyframesChunk();
+
+	uint32_t numJointsPerFrame;
+	std::vector<Keyframe*> frames;
+
+	Keyframe* AddFrame();
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline KeyframesChunk::KeyframesChunk(uint32_t numJointsPerFrame)
+{
+	this->numJointsPerFrame = numJointsPerFrame;
+}
+
+inline KeyframesChunk::~KeyframesChunk()
+{
+	for (uint32_t i = 0; i < frames.size(); ++i)
+	{
+		Keyframe *frame = frames[i];
+		SAFE_DELETE(frame);
+	}
+}
+
+inline Keyframe* KeyframesChunk::AddFrame()
+{
+	Keyframe *newFrame = new Keyframe(numJointsPerFrame);
+	frames.push_back(newFrame);
+	return newFrame;
+}
+
+inline uint32_t KeyframesChunk::GetCount() const
+{
+	return frames.size();
+}
+
+inline uint32_t KeyframesChunk::GetSize() const
+{
+	if (frames.size() == 0)
+		return 0;
+
+	uint32_t size = sizeof(uint32_t);  // count
+
+	for (uint32_t i = 0; i < frames.size(); ++i)
+	{
+		Keyframe *frame = frames[i];
+		size += frame->GetSize();
+	}
+
+	return size;
+}
+
+
+#endif
diff --git a/src/chunks/normals.h b/src/chunks/normals.h
new file mode 100644
index 0000000..42aff65
--- /dev/null
+++ b/src/chunks/normals.h
@@ -0,0 +1,34 @@
+#ifndef __CHUNKS_NORMALS_H_INCLUDED__
+#define __CHUNKS_NORMALS_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/vector3.h"
+#include <vector>
+
+struct NormalsChunk
+{
+	std::vector<Vector3> normals;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t NormalsChunk::GetCount() const
+{
+	return normals.size();
+}
+
+inline uint32_t NormalsChunk::GetSize() const
+{
+	if (normals.size() == 0)
+		return 0;
+
+	uint32_t normalsSize = sizeof(float) * 3;        // xyz
+
+	uint32_t size = sizeof(uint32_t);  // count
+	size += normalsSize * normals.size();
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/texcoords.h b/src/chunks/texcoords.h
new file mode 100644
index 0000000..249cde5
--- /dev/null
+++ b/src/chunks/texcoords.h
@@ -0,0 +1,34 @@
+#ifndef __CHUNKS_TEXCOORDS_H_INCLUDED__
+#define __CHUNKS_TEXCOORDS_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/vector2.h"
+#include <vector>
+
+struct TexCoordsChunk
+{
+	std::vector<Vector2> texCoords;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t TexCoordsChunk::GetCount() const
+{
+	return texCoords.size();
+}
+
+inline uint32_t TexCoordsChunk::GetSize() const
+{
+	if (texCoords.size() == 0)
+		return 0;
+
+	uint32_t texCoordSize = sizeof(float) * 2;        // uv
+
+	uint32_t size = sizeof(uint32_t);  // count
+	size += texCoordSize * texCoords.size();
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/triangles.h b/src/chunks/triangles.h
new file mode 100644
index 0000000..6e6e6fb
--- /dev/null
+++ b/src/chunks/triangles.h
@@ -0,0 +1,37 @@
+#ifndef __CHUNKS_TRIANGLES_H_INCLUDED__
+#define __CHUNKS_TRIANGLES_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/triangle.h"
+#include <vector>
+
+struct TrianglesChunk
+{
+	std::vector<Triangle> triangles;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t TrianglesChunk::GetCount() const
+{
+	return triangles.size();
+}
+
+inline uint32_t TrianglesChunk::GetSize() const
+{
+	if (triangles.size() == 0)
+		return 0;
+
+	uint32_t size = sizeof(uint32_t);  // count
+
+	for (uint32_t i = 0; i < triangles.size(); ++i)
+	{
+		const Triangle *triangle = &triangles[i];
+		size += triangle->GetSize();
+	}
+
+	return size;
+}
+
+#endif
diff --git a/src/chunks/vertices.h b/src/chunks/vertices.h
new file mode 100644
index 0000000..b311c42
--- /dev/null
+++ b/src/chunks/vertices.h
@@ -0,0 +1,34 @@
+#ifndef __CHUNKS_VERTICES_H_INCLUDED__
+#define __CHUNKS_VERTICES_H_INCLUDED__
+
+#include "../common.h"
+#include "../geometry/vector3.h"
+#include <vector>
+
+struct VerticesChunk
+{
+	std::vector<Vector3> vertices;
+
+	uint32_t GetCount() const;
+	uint32_t GetSize() const;
+};
+
+inline uint32_t VerticesChunk::GetCount() const
+{
+	return vertices.size();
+}
+
+inline uint32_t VerticesChunk::GetSize() const
+{
+	if (vertices.size() == 0)
+		return 0;
+
+	uint32_t verticesSize = sizeof(float) * 3;        // xyz
+
+	uint32_t size = sizeof(uint32_t);  // count
+	size += verticesSize * vertices.size();
+
+	return size;
+}
+
+#endif