Aci 315-99 supersedes aci 315-92 and became effective August 31, 1999

3.7.8.2 Spiral details—Unless otherwise specifically
provided, spirals should be detailed as extending from the
floor level or top of footing or pedestal to the level of the
lowest horizontal reinforcement in the slab, drop panel, or
beam above. In a column with a capital, the spiral shall ex-
tend to the plane at which the diameter or width of the capital
is twice that of the column. See 
Detail 2, Fig. 4
. If the struc-
tural drawings require lateral reinforcement in the column
between the top of the main spiral and the floor level above,
it should be provided by a stub spiral (short section of spiral)
or by circular column ties. Where stub spirals are used, they
must be attached to the main spiral for shipment or fully
identified by mark numbers.
3.7.9 Dowels—Dowels will be provided by the detailer as
specified in the contract documents for the following:
1. Column footings to columns;
2. Wall footings to walls;
3. Wall intersections;
4. Stairs to walls;
5. Construction joints in footings, walls, and slabs;
6. Columns at floor levels where the vertical reinforce-
ment cannot be offset bent and extended; and
7. Other places where it is not possible or desirable to ex-
tend the reinforcing steel continuously through a joint.
Dowels, preferably, should be detailed with that portion of
the structure where concrete is placed first. They should al-
ways be ordered with that portion.
3.7.10 Bar lists—Bar lists used in cutting, bending, tag-
ging, shipping, and invoicing are prepared from placing
drawings. Bars are grouped separately on the bar list as fol-
lows:
1. Straight;
2. Bent, including stirrups and ties; and
3. Spirals.
The grade of reinforcing steel for all items must be shown.
Straight bars are usually grouped according to size, with
the largest size first and those of the same size listed in the
order of their length with the longest bar first.
Bent bars, stirrups, and ties are usually listed in a similar
manner.
Spirals may be subdivided and listed in groups by the size
of bar, diameter of spiral, pitch of spiral, and length. See the
bar list example in the supporting reference data section.