. Canadian engineer. bin.; and in addition they are hooked and bent to de- velop the full stress. .\t the bottom they pass below thehorizontal steel. In the case where the bent-up rods carry a part of theshear, investigation as to their strength in shear resistancemust first be made before the point of bending can finallybe fixed. Considering a pair of these rods as an inclinedstirrup, a moment increment may be determined for thepair from eq. (7). This was found to be 1,960,000 in. value is laid off vertically, as OB, Fig. 4b. The dis-tance s corresponding to the pair of rods is much
. Canadian engineer. bin.; and in addition they are hooked and bent to de- velop the full stress. .\t the bottom they pass below thehorizontal steel. In the case where the bent-up rods carry a part of theshear, investigation as to their strength in shear resistancemust first be made before the point of bending can finallybe fixed. Considering a pair of these rods as an inclinedstirrup, a moment increment may be determined for thepair from eq. (7). This was found to be 1,960,000 in. value is laid off vertically, as OB, Fig. 4b. The dis-tance s corresponding to the pair of rods is much greaterthan d. The pair is then excessively strong to take theshear; and since the spacing given for bending the rodsis also greater than d, the second pair of rods will beturned up, as shown from the bending diagram, while thefirst pair will be bent up at an arbitrary distance jd towardthe centre from the bending point of the second pair. Thearrangement is shown in the right half of Fig. 4b. /Jrea of Stirrup, Fig. Point K represents a point midway between the inter-sections of the two pairs of bent-up rods with the neutralplane. The projection of K upon the moment curve is P,thereby determining the chord EP. Point C is the inter-section of the first bent-up pair with the neutral plane, andits projection on the moment curve is Q, thus establishingFQ. EF, therefore, is half of the actual incrementascribed to the first bent-up pair, on the basis of is then laid off again, as FG, thus completing the in-crement EG. The portion of the curve from O to G, there-fore, is cared for bv the bent-up rods. Since OB is thepermissible value for one pair, it is seen that they areamply strong to carry the shear, and that their placingwas determined by the approximate maximum spacing. Beginning with G, the stirrup increments are laid off,the first being half value, (GH), as previously intersections with these and the moment curve deter-mine the positions of stirr
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