Set up the four 10-foot steel bars in a square on the ground.
Insert the corners of the square into three-way connectors.
Drill screws into the corners of the connectors to solidify the connection.
Insert an 8-foot steel bar into each corner of the connector. Drill a screw into the connection to solidify it. These are the legs of the pavilion and after this step they are standing vertically erect. There will be no center pole to prop the roof up. The roof on this pavilion is a horizontal roof.
Cut the tarp to the size of the square using scissors.
Drape the tarp over the top to create the roof.
Duct tape the edges of the tarp to the steel frame.