37 Construction, erection and dismantling of temporary and portable roads, pathways, foundations, bridges, walkways, road barriers and crowd control barriers, fences, buildings, infrastructure and temporary hard surfaces, temporary fencing, hoarding, look-out towers, gates, and seating stands; installation, repair, maintenance, refurbishment, modification and maintenance of support structures, masts, aerials and foundations for support structures; rental of construction equipment, cranes, drills, platforms and scaffolding; consulting and providing information in the field of construction, erection and dismantling of temporary and portable roads, pathways, foundations, bridges, walkways, road barriers, and crowd control barriers, fences, buildings, infrastructure and temporary hard surfaces, temporary fencing, hoarding, look-out towers, gates and seating stands; consulting and providing information in the field of installation, repair, maintenance, refurbishment, modification and maintenance of support structures, masts, aerials and foundations for support structures; consulting and providing information in the field of rental of construction equipment; and construction, repair and maintenance of railway and railway tracks