TREANOR PUJOL DESIGN, MANUFACTURE AND INSTALL PRECAST CONCRETE PRODUCTS THROUGHOUT THE UK. Our hollowcore shed can manufacture 616,000 m² of flooring products per year, ranging from solid planks to 500 mm deep hollowcore and 155 or 225 prestressed concrete beams. We offer a wide range of products for flooring systems like beam and block or hollowcore slabs and precast stairs .