Enter cost per linear foot and wastage % for Stumps, Bearers, Joists and Boards to Calculate individual and Total Costs. Linear feet and cost are auto updated when the deck is re-calculated, with individual costs for stumps, bearers and joists displayed in each section. All the screws were clearly marked. We were also very impressed how sturdy the structure is. The pergola is anchored in a concrete patio. A month and a half after we had installed the pergola. We had a bad storm with 90mph winds. The pergola did not move. The 2-beam pergola has been a beautiful addition to our back yard patio area.