Rebar reference — DetailCraft help

Bar sizes

From ASTM A615/A615M Table 1 (inch-pound designations). Millimeters and kg/m are exact conversions of the published inch and lb/ft values. The lists show each size as, for example, "#5 (15.9 mm)".

Bar	Diameter (mm)	Mass (kg/m)	Area (mm²)	Inside bend diameter	90° hook leg, out to out (mm)
#3	9.5	0.560	71	6 db	152
#4	12.7	0.994	129	6 db	203
#5	15.9	1.552	200	6 db	254
#6	19.1	2.235	284	6 db	305
#7	22.2	3.042	387	6 db	356
#8	25.4	3.973	510	6 db	406
#9	28.7	5.060	645	8 db	487
#10	32.3	6.404	819	8 db	548
#11	35.8	7.907	1006	8 db	609

Metric bar sizes are not available yet.

Hooks

Standard 90° hooks from ACI 318-19 Table 25.3.1: inside bend diameter 6 db for #3 to #8 and 8 db for #9 to #11, with a straight extension of 12 db past the bend. The hook leg, measured out to out, is half the bend diameter + db + 12 db.

If a mat bar's hook does not fit in the footing depth inside the cover, DetailCraft shortens the leg to fit and lists a warning.

Shapes

DetailCraft uses its own three shape codes. They are not ACI 315 or BS 8666 shape codes.

Code	Shape	Dimensions
S	Straight	A = length
L	One 90° bend	A = main leg, B = hook leg, both out to out
U	Two 90° bends on the same side	A = middle, B and C = the two legs, out to out

Mat bars with End hooks on are U; without, S. Starter bars with Hook at the bottom on are L; without, S.

Cut length

The cut length is the exact length of the bar's centerline: the straight parts plus the bends as arcs at half the bend diameter plus half the bar diameter. It is not worked out from a table of bend deductions, so it can differ by a few millimeters from a schedule that uses one.

Layout

Bottom mat: bars along L form the lower layer, bars along B sit on them. Each set is spread evenly across the footing inside the cover, at the spacing you give or closer, with at least two bars.
Starter bars: a grid of bars along L and along B at the spacings you give, centered on the footing, standing on the mat and projecting above the top by the projection you give. Each hook points outward.

Checks

Check	Rule	Result
Room for bars	Cover on both sides leaves space for the bars	Refused if not
Depth for two layers	Depth minus two covers holds both mat layers	Refused if not
Starters fit	The starter grid fits inside the cover	Refused if not
Clear spacing	At least the larger of 25.4 mm and db (ACI 318-19 25.2.1; aggregate size not checked)	Warning
Hook depth	Hook leg fits in the depth inside the cover	Warning, leg shortened
Starter hooks	Hooks stay out of the cover	Warning

Bending schedule columns

The Bending schedule tab and its CSV have these columns: Bar mark, Size, Shape, A (mm), B (mm), C (mm), Count, Cut length (mm), Total length (m), kg/m, Weight each (kg), Total weight (kg), Used for. The last row totals the count, length and weight.