FUJI Precast Box Culvert is designed for JIS (T-25) with an earth cushion of minimum 200 mm to maximum 3000 mm. Box Culvert design is also confirming to IRC 70R loading.
https://www.fujisilvertech.com/product/box-culvert/
FUJI Precast L – Shape Earth Retaining is designed for JIS (T-25) i.e. 10 KN/m2 live load.
Earth Retaining Wall is available in the following sizes.
Height: 600 ~ 3000 mm
https://www.fujisilvertech.com/product/earth-retaining-wall/