DPWH Standard Specifications for Mechanically-Stabilized Earth (MSE) Retaining Walls, Item 515. Category: Department OrderSub Category: construction-materialsSeries: 2007No: 50File: DO_050_S2007.pdfDate: Tuesday, September 4, 2007Tags: Standard Spec 050 Mechanically-Stabilized Earth (MSE) Retaining Walls Item 515 material Read more about DPWH Standard Specifications for Mechanically-Stabilized Earth (MSE) Retaining Walls, Item 515.