2022-06-24_PERMIT FILE - C1980007 (2)

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3. The coating as delivered shall contain not more than 16 percent by • weight of non-inflammable modifiers, and have a 1/2 second nitrocellulose content of not less than 15 percent by weight. 4. At a temperature of 77°F., the viscosity of a stormer viscosimeter shall be 30 seconds at 100 grams. 5. Ignition of liquid material under Hamad test as delivered shall be self- quenching at an air temperature of 50 F. or lower. E. Form Ties 1. Ties shall be adjustable in length and free of devices which will leave: a hole or depression back of the exposed surface of the concrete: larger than 7/8" in diameter. 2. Ties shall be of such make that when forms are removed, no metal shall be within one inch of the finished surface. 3. Wire ties will not be permitted except in unexposed locations where discoloration wt11 not be objectionable. PART 3 -EXECUTION r • 3.01 Preparatioq A. Falsework 1. Falsework shall be designed and constructed to provide the necessary rigidity end to support the loads without appreciable settlement or deformation. 2. The Contractor may be required to employ screw jacks or handwoo+9 wedges to take up any settlement in the formwork either before or during the placing of concrete. 3. Falsework which cannot be founded on a satisfactory footing shall bye supported on piling which shall be spaced, driven and removed in +a manner approved by the Engineer. 4. Falsework shall be so set that after its removal, the finished structure will have the finished grade specified or indicated on the drawings. 5. Arch centering - Provision shall be made by means of suitable wedges, sand boxes or other devices for the gradual lowering of centers and rendering the arch self-supporting. When directed centering shall be placed upon approved jacks to take up and correct any slight settlement which may occur after the placing of masonry . has begun. B. Form Coating 1. The original application shall consist of two coatings evenly applied. 03100-3