Section 704 Section 704 Group A-6 or A-7, and shall conform to the following: Percent passing No. 10 Sieve --------------------------------------------------------- 80-100 Percent passing the No. 200 Sieve, minimum ------------------------------------------- 36 Liquid Limit, maximum -------------------------------------------------------------------- 50 Plasticity Index ------------------------------------------------------------------------ 12 to 25 pH ------------------------------------------------------------------------------------- 4.5 to 8.0
704.06 Crushed Stone Drainage Layers. The aggregate shall be crushed limestone,
sandstone or granite conforming to the quality requirements of Subsections 703.01 and
703.03 The aggregate shall conform to the gradation set out below.
% Passing Sieve Size by Weight 1 1/2" 100 1" 95 - 100 1/2" 60 - 82 No. 4 35 - 55 No. 8 5 - 25 No. 16 3 - 11 No. 50 2 - 7 SECTION 705 - STONE BLANKET PROTECTION AND FILTER BLANKET MATERIALS
705.01 Stone Blanket Protection . In addition to meeting the quality requirements of
AASHTO M 80, Class E, stone blanket prot ection shall be in accordance with AASHTO M 43, Size No. 357. 705.02--Stone Filter Blanket . In addition to meeting the quality requirements of AASHTO M 80, Class E, filter blanket material shall conform to the gradation requirements of AASHTO M 43, Size No. 467.
705.03 Sand Filter Blanket . The sand filter blanket shall conform to the gradation
requirements of Subsection 703.02 for concrete sand.
705.04 Stone Riprap . Aggregate for loose riprap, stone riprap for foundation protection,
or that to be grouted shall consist of field stone, broken concrete, or rough, unhewn quarry stone as nearly rectangular in section as is practicable. The stone shall be dense, free of clay or shale seams, resistant to the action of air and water, and suitable in all other respects for the purpose intended. Quality requirements for rock to be furnished under these specifications will come from a pre-approved source or be visually approved prior to use. Stones for riprap, of the size sp ecified, shall meet the requireme nts for size by weight of the mass as specified in the following table: PERCENTAGE LARGER THAN By Weight of the Mass Rock Size Size 8 4 2 1 1/2 1/4 500 300 200 100 Ton Ton Ton Ton Ton Ton Pound Pound Pound Pound 8 Ton 50 0 4 Ton 85 50 0 2 Ton -- 95 50 0 1 Ton -- -- 95 50 0 1/2 Ton -- -- -- 95 50 0 0 1/4 Ton -- -- -- -- 95 50 0-10 300 Pound -- -- -- -- -- -- -- 0 200 Pound -- -- -- -- -- -- 50 -- 0 100 Pound -- -- -- -- -- -- -- -- -- 0 75 Pound -- -- -- -- -- 90 -- -- -- -- 60 Pound -- -- -- -- -- -- -- 80 -- -- 40 Pound -- -- -- -- -- -- -- -- 80 -- 20 Pound -- -- -- -- -- -- 90 90 -- 80 10 Pound -- -- -- -- -- -- -- -- 90 -- 5 Pound -- -- -- -- -- -- -- -- -- 90 This table sets out minimum requirements fo r the large stone per size designation. The Contractor shall furnish material well graded with the smaller stones such that a homogeneous blanket of riprap will result with all interstices reasonably well filled with rock. SECTION 706 - MASONRY UNITS
706.01 Brick .
706.01.1 General . Brick shall have a fine-grained, uniform, and dense structure, and be
free of lumps of lime, laminations, cracks, checks, soluble salts, or other defects that may in any way impair the strength, durability, a ppearance or usefulness of the brick for the purpose intended. Bricks shall emit a clear, metallic ring when struck with a hammer.
706.01.2 Building Brick . Unless otherwise stipulated, building brick shall conform to
ASTM C 62, Grade SW.
706.01.3 Sewer and Manhole Brick . Unless otherwise stipulated, brick for sewer and
manholes shall conform to ASTM C 32, Grade SM.
706.02 Concrete Brick . Concrete brick shall conform to ASTM C 55, Grade N, Type I.
706.03 Concrete Masonry Blocks . Concrete masonry blocks may be rectangular or
segmented and, when specified, shall have ends shaped to provide interlock at vertical joints. The blocks shall conform to the requirements of ASTM C 139; or, for hollow blocks, to ASTM C 90, Grade N, Type I. Dimensions and tolerances shall be as specified.
706.04 Right-of-Way Markers .
706.04.1 General . Concrete right-of-way markers shall be constructed in conformity
with the details shown on the plans and shall meet the requirements hereinafter set forth.