. An aluminum gutter downspouts to determine the location of the installation 1-1: According to the characteristics of the apartment roof, downspouts reasonable choice position. 1-2 draw guide lines: with ink cord nailed down about 3cm in a fixed position from a higher skyhook nail, thus nailing every direction to the drowning mouth dropped 3cm 3m slope guide line drawn skyhook. 1-3 measuring roof cornice length: measure the length of cement roofing tiles under cornice. 1-4 determine the length of the gutter: A cornice of this paragraph, if a straight line, then, such as eaves and gutter long. If the length is greater than B eaves gutter, you need segmented gutter, the connection of the gutter overlap 2cm. When C if skyhook direction outside corner, gutter length greater than the length of the cornice. Each additional 90-degree angle, long eaves gutter than 130mm. Each additional 135-degree angle, long eaves gutter than 70mm. 1-5 Connection Gutter: According to the total length of gutter, gutter cut segments, making connections gutter incision in the ground workspace riveting gutter. 1-6 cutting inside and outside corner: According to internal and external corner angle, hand hacksaw cutting bevel. 1-7 seal plate installation tip: before and after the drill hit two empty, fastened with rivets. 1-8 installing gutter hanging pieces: A guide wire along the gutter about 30cm from the tip back a swell place to set down 2cm hole day along the trench wall flush with the guide wire, aperture 8mm, depth of not less than 4cm. Hanging distribution B: From beginning to end the first crane mounted on the gutter; C set a hanging pieces in the corner; D to set up a mouth hanging pieces in the water; E in the direction of the gutter, two maximum spacing hanging member is not more than 1.5 m; F in surface workings with Ф8 suspended twist drill along the inner wall of the gutter member guide air penetration; G tied up with the plastic gutter end fixed to the eaves, and the inner wall of the gutter along with the guide wire flush with Ф8 impact drill pilot holes through the hanging pieces, the second expansion holes drilled and fixed hanging pieces, then click Install. If the roof is wood cornice H structure, use curved hanging pieces, cornice without drilling, screws penetrate directly to the inner wall of the gutter, fixed on the cornice. 1-9 riveting inside and outside corner: bevel cuts and should be on the ground inside and outside corner of the workspace test equipment; riveting first corner on the end of the gutter, adjust the angle, and then with the other end of the rivet. II. Install downspouts 1, making the water interface: port position according to the water, with flat shovel, metal scissors or grinder make the water inlet on the ground work area. A Mounting elbow: According to the water port position to make a good elbow riveted on the water inlet pipe card b determine the location: According to the water port position, with line cards fall to determine the position of the tube; two pipe card maximum distance of not more than 3 m; and gutters connected to a pipe elbow is provided below; downspouts away from the lower end of a tube set at 30cm card. Install pipe card: the corresponding position on the wall hit the hole expansion, tied up with plastic pipe fixed cards, wall insulation, if any, must be tied up longer, to ensure fixation. Crop downspouts: Calculate downspouts length cut according to the downspout location, plug partially overlapping 3cm; cut off downspouts, if you need to insert into the downspout below, shall be the end of the smaller; pipe card riveting: the pipe card downspouts wings surrounded by solid rivet 2, filling and sealing protective padding seals: Topical silicone gel with a neutral, respectively, both inside and outside at the corner riveting, riveting gutters segment at the closure plate riveted at other places evenly. Protective measures: Some buildings may be the presence of the living environment clogged gutters, consider using filters or other methods