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i. Downspouts: downspouts shall be rectangular in shape and <br />crimped in design. Tn no rase shall the material be thinner <br />than 26 Page for steel or 0.0321 for aluminum. The size of <br />the downsnoi is s'inl 1. he ade(!iinte for, the si?P building on <br />which thP,•r are used. Tnterior downspouts for valley Putters <br />are not furnished by the mp tual bolding manufacturer. <br />10. PAINTING <br />Structural i'aintina,: All uncoated structural steel and <br />light gage steel components shall be cleaned of foreign <br />matter anA scale and Piv,!�n one shop coat of rust <br />inhibitive ^ir.,, c^romate iron oxide alkyd primer formulated <br />' <br />•: <br />to equal or .ax-eed the performance requirements of Federal <br />'" <br />Specificat.eon-T-a-")36r. Tne vrimer coat thickness shall <br />bP a mininirn n" one mil. <br />?anel FinirrPs: <br />`. <br />Metal Prenarat.ion: ialvani7ed steel panels shall be pie- <br />teraent wash-d and chemi^ally pretreated with approved <br />phosphate::in? complex chromium oxide pretreatment, <br />Primes for aln.ed Steel anels: 0.1 to 0.2 mils of ltpaxy <br />'r„•,�« <br />,rimer shalt be applied by the roll coater method. This <br />".. , <br />corrosion resistant Epoxy Rond Coat shall providea suit- <br />able surface for apnlication of the finish cost. The.primer <br />; <br />shall be ba —4 to a mini•num metal temperature of 3100 F, <br />Finish Coat for Painted Steel panels: Silicone Polyester <br />Weather (tesis t.ant Finish shall be apnlied at 1 mil dry film" <br />`' <br />thickness (subioct to N.C.C.A.s standard tolerance) apd <br />y <br />w `>�'•' <br />baked to a minimum metal temperature of 4500F. The ,silicone <br />polyester ccicr panels shall be pigmented with color- pig- <br />t, "�` ,. = • <br />ments of t'•P fade resistant type to insure long color: life,.- <br />-;:•. <br />Ttie paint - steel panels shall have a 60 degree gloss -of ' , ° <br />10 (-`B) when measured arrordinv to ASTM-D-523.21.._ The <br />painted panel shall not show excessive chalking,, crack- At4 : <br />inQ, checking, or loss of adhQon durfnt± its guarantee <br />period. Tt shall not exhibit a color change in excess of an <br />•�'`,;!„'^�;; <br />average of seven (7) units when measured on the "Color Eye" <br />' <br />and measured against the White Jitrolyte Standard No. 512. <br />Readings s",all be made using the tristimulus filter system.. <br />Of XYZ ba3PA on the CIE `ratues and shall b t a e of <br />these readings. painted steel panels .Rre./A�xVe r paint ., '� <br />�•:. ''�.- <br />mlarant,-e (see manufacturer's written Ruarantep), <br />,. <br />