Technical Resource Guide_WEB_BEL25-D-516650 - Page 15 of 84

15 | belgard ® product installation guide | belgard.com | 877-235-4273 12' (4m) 6' (2m) 6' (2m) ① Set string lines square on sides of openings ② Lay one side first ④ Fill this area ③ Lay other side next Courses match other side OPENING IN PAVEMENT 90° Place the washed concrete sand between the screed rails and rough screed with a shovel, steel rake or lute. Excess sand makes the screed board difficult to pull. Place screed board on the rails and draw forward leaving a smooth surface. Fill in and rescreed any open streaks. When a screed rail is no longer needed, it should be carefully removed and the void filled with sand and hand floated. Do not compact the sand setting bed before laying pavers. PAVERS Plan your installation to begin along a straight line and preferably in a corner which is easily accessible. Make absolutely certain that the beginning corner is a true 90 degree angle. If the intersection of two sides is not a true 90 degree angle, you must establish a 90 degree starting point. In most projects, the pavers, regardless of paver shape, are laid in patterns and radii or curves are cut into the pavement after the field pavers have been laid but not compacted. Straight joint lines are important and not only make the finished pavement look clean and sharp but make installation much easier. To keep joint lines straight, parallel string lines or chalk lines snapped on the sand setting bed should be used. The lines should be spaced five to ten feet apart with the spacing equal to the laying modulus of the paver shape being installed. This can be determined by laying a course of pavers in the proper pattern with 1/8 in. joints and measuring the distance between at the desired line separation distance. Procedure: • Snap a string line on the screeded sand in the center of the area(s) to be placed. • The line should be perpendicular to the laying face. • Place pavers in the given laying pattern on both sides of the line. • If additional lines are snapped, they should be parallel to each other. Check this by measuring the distances at the opposite ends of each line. They should be equal. • If they are not parallel, they can be erased and snapped again. Parallel chalk lines snapped in bedding sand or string lines pulled above sand and pavers. Parallel string lines are also used to pave around openings in the pavement such as manholes or swimming pools. Pull perpendicular string or snap chalk lines on all four sides of the opening. • For best results pull and install pavers from multiple pallets • Install a border course whenever possible to allow for cuts to made in the field rather than the perimeter.