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. . r � <br /> • � <br /> � SCOPE: The foZlowing apecifications. includ�g special. items and <br /> modifications. shall �;overn the con�truction of the fireplace <br /> and chimney. <br /> WORh INCLUDED: All labor. ma[erials. equip�ent, appliances, anchors, <br /> bolts. miscellaneous iron work and all other reinforcing <br /> steel, as indicated on the plans and as herein stpecified, <br /> MATERIALS: Materials shall be as follows : <br /> -Water shall be clean and potable. <br /> -Sand conforming to "Aggregate for Masonry Martar" , ASTT: C144. <br /> -Portland cement conforming to ASTM C150. <br /> -Hydrated lime conforming to "Hydrated Lime for Masonry Furpose" , <br /> ASTM �207, Type S. <br /> -Steel reinforcing conforming to DEFORMED BILLET STEEL BARS <br /> CONCRETE REINFORCEMENT ASTM A615 - Grade 40. <br /> -Brick, meeting the requirements for "Building Brick" , ASTM C62. <br /> -Block meeting the requirements far "Solid Load Bearing Concrete <br /> Masonry Units" , ASTM C145-71. <br /> -Flue lining confonning t� Clay Flue Linings , ASTM C315 . <br /> MORTAR PROPORTIONS: TABLE N0. 24-A MORTAR PROPORTIONS <br /> (Parts by Volume) <br /> `�I,..�..." ",..�-��57�'E ( ------- n'�''i�_=TEL i;vcs___?_-- l..-.�— _f_. <br /> (?E:'AR 5:=,�"ti>�JkT 2'c I]:�YS l'llitT`.i+\"D O: • 'vr J'L-:ZY i'.�.+Sn,'�R�' L'�:Sc <br /> �*E - (r=S'=�-----� i C'�:.'�"1' `".'\,_ :r.X. _ �1:5 h�:^.'..rri+T� <br /> i _1 - 1/4 �. - - `;o: :c-ss t`:on <br /> ?! _250�J --- � 1 - " � 1 2-1'4 and n;t <br /> _1 114 1/2 ' - � -�cce t�ar, 3 <br /> , S 1 300 _ I 112 - -�1 ric�es the s:r <br /> ; 1 1/2 1-1/4 oc .tte t•o:_-.es <br /> K 750 - - - —+--1 of tne crre�: <br /> '.:-, <br /> �C � -- 'SO --- —�� 1 _2-1/4 _ ?-1/2 --- and — e =ez <br /> �^en p:as:ic o: :.a�frpr:,of cecent is �.:sFd as specified ir. Sectinn 2403 (p). �;c'ra;ed l:r-:e <br /> o- p�:ty :ray be .+:�'-d b::. ::n: :n ezcess of �ne-ter::h !he vela-ne of cr-,ent. <br /> MIXING OF MORTAR: All cementitious materials and aggregates shall be <br /> mixed for a minimum period of three minutes , with <br /> the amount of water required to produce the desired <br /> workability. Type 0 Mortar is not recorru�endec� for <br /> fireplace construction. <br /> RE-TEMPERING: Permitted only by adding water within a basi.n formed <br /> of mortar and the mortar reworked into the water . <br /> Mortar which has become harsh and non-plastic shall <br /> not be re-tempered or used. <br />