Bid Package 08 North Well Field - Garney Construction

Colorado River Municipal Water District
Raw Water Supply Well Sites
Ward County North Well Field
D. Install reinforcing steel in correct position by use of preformed bolsters, chairs, and
spacers. Solid concrete blocks of appropriate size may be used to position bars in
concrete placed on grade. Legs of steel supports that are in contact with form work shall
be stainless steel or plastic tipped.
E. All steel shall have a 2-inch minimum cover of concrete.
F. Space bars properly and tie securely in position before placing concrete. Tack welding to
keep reinforcing in place is not permitted. The spacings shown on the drawings for
reinforcement and other embedded items are maximums. Provide and install a sufficient
number of items so that the spacings shown are not exceeded. Locate the first and last
items in a run of uniformly spaced items at not more than one-half the typical spacing nor
12 inches from the end of a structural element.
G. Locate reinforcement and other items to avoid conflict with the work of other trades.
Provide additional reinforcement around openings as shown. Do not cut or remove
reinforcement for any reason without the prior approval of the Engineer.
H. Continuity of Vertical Reinforcement: No splices are permitted except as shown.
Provide dowels from footings to walls or columns at all vertical bars in walls or columns.
Except as otherwise shown, dowels shall have standard 90-degree ACI hooks with
12-inch horizontal extensions and vertical legs of sufficient length to provide ACI
Class B tension lap splices with the vertical bars.
I. Continuity of Horizontal Reinforcement.
1. Footings, walls, turned-down slab edges: Bars shall be lapped not less than
32 bar diameters or 24 inches except where larger splices lengths are shown.
Except where bar lengths are given, reinforcement is to be continuous for full
length or width of member less required concrete covers. Do not splice
transverse footing bars. Additional reinforcement shall be provided at corners,
intersections, and other discontinuities as shown on the drawings.
2. Concrete slabs-on-grade: Welded wire fabric shall be lapped not less than one
and one-half meshes or 8 inches on all sides.
3. Elevated slabs, beams: No splices except as shown.
END OF SECTION
May 18, 2012
Concrete Reinforcement
Revision 0 03 20 00 - 3