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B. Point all joints, including scores, of glazed masonry units with colored pointing mortar. Tool joints concave ' <br /> smooth. <br /> C. Thoroughly clean exposed masonry. Before applying any cleaning agent to entire wall,apply to sample wall area of ' <br /> approximately 20 sq.ft.in location approved by Architect. Do not proceed with cleaning work until sample area is <br /> approved.Use approved cleaning material,method on remaining wall area. <br /> D. If stiff brushes, water do not suffice clean the surface on which no green efflorescence appears with Sure-Klean ' <br /> Vana-Trol as manufactured by Pro So Co.,Inc. <br /> E. Remove"problem" stains as follows with the as specified formulations of Pro So Co.,Inc.,or equal: ' <br /> 1. Green Efflorescence-"Sure-Klean No.800 Stain Remover". <br /> 2. Tar,Asphalt-"Sure-Klean Asphalt&Tar Remover". , <br /> 3. Ferrous Stains-"Sure-Klean Ferrous Stain Remover". <br /> F. Do not use acid solutions for cleaning masonry units unless specifically approved by Architect. <br /> G. Clean off loose mortar,remove stains from concrete masonry units. <br /> H. Schedule,complete cleaning work as soon as possible;in any event, before Owner's signage work is commenced. <br /> 3.11 FIELD QUALITY CONTROL <br /> A. Special Structural Testing and Inspection <br /> 1. Special Structural Testing and Inspection shall be performed by qualified parties as specified herein, and in ' <br /> accordance with the provisions of Section 01410. <br /> 2. Personnel Qualifications , <br /> a. Special Inspector-Technical <br /> 1.) Technical I - ACI Certified Grade I Technician. Inspector shall be employed by a testing ' <br /> laboratory,under the direct supervision of a registered civil/structural engineer. <br /> 2.) Technical II - ACI Certified Grade II Inspector. Inspector shall be employed by a testing ' <br /> laboratory,under the direct supervision of a registered civil/structural engineer. <br /> 3.) Technical III-A civil/structural engineer regularly engaged in this type of work,with a minimum of ' <br /> 4 years experience and registered in the State in which the project is located and is an employee of a <br /> qualified and approved testing laboratory. The registered engineer shall review and approve all <br /> reports- <br /> 4.) <br /> eports 4.) Testing laboratory shall have C.C.R.L.certification at the National Bureau of Standards. <br /> 3. The Owner will employ a Special Inspector for the following tests: ; <br /> a. Concrete masonry prism test for compressive strength according to ASTM E447-Method B. Conduct <br /> one set of three prisms at the start of construction and for each 5,000 square feet of block installed. ' <br /> Qualifications: Technical 11. <br /> END OF SECTION 04200 ' <br /> 04200-8 No.99132-CP2 , <br />