Here are some size for you to consider
1.L:5 m ,W:0.7 m ,H:1.4 m
2.L:8 m ,W:1.2 m ,H:3 m
or customize is oaky ,it can of course be created in any design you like

Application
1.outdoor and indoor playground equipment ,amusement park equipment
2.Museum exhibits,theme park exhibits ,science center
3.Educational materials at school
4.Park decoration ,business attractive
5.Dinosaur museum ,dinosaur show