Handbook of Civil Engineering Calculations

er equations in this section. The major axis is the one for which 7 is maximum; the mi- nor axis is the one for which / is minim ...

Calculation Procedure: Record the properties of the individual channel Since x and y are axes of symmetry, they are the princip ...

Record the member area and computer rv From the Manual, A = 3.61 in 2 (23.291 cm 2 ); ry = 1.56 in (39.624 mm); rz = 0.99 in (2 ...

Compute the value of KxL associated with a uniform- strength column, and compare this with the actual value Thus, KxL = 1.73(15 ...

Calculation Procedure: Draw schematic diagrams to indicate the restraint conditions Show these conditions in Fig. 146. The cros ...

Design the lacing bars The lacing system must be capable of transmitting an assumed transverse shear equal to 2 percent of the ...

Determine whether the selected section is acceptable Compute the value OfKxL associated with a uniform-strength column, and com ...

INVESTIGATION OFA BEAM COLUMN A Wl2 x 53 column with an effective length of 20 ft (6.1 m) is to carry an axial load of 160 kips ...

Calculation Procedure: Record the basic values of the previous calculation procedure The beam-column factors were devised in an ...

to F, s = 3 in (76.2 mm), g = 2.5 in (63.50 mm); WAC = 7- 0.875 = 6.12 in (155.45 mm); WABDE =? ~ 2(0.875) + 1.25^2 /[4(2.5)] = ...

Calculation Procedure: Show one angle in its developed form Cut the outstanding leg, and position it to be coplanar with the ot ...

The ultimate load is reached when these conditions cease to exist and thus the struc- ture collapses. Thus, elastic design is co ...

Expressing the relationships among the tensile stresses, we have AL = sALA/E = sBLB/E = SCLCIE\ therefore, SA = sc, and SA = sBL ...

Thus, for a rectangle, C = bdfy/2, a = d/2, and Mp = aC = bd 2 fyJ4. For a circle, C = m/%/8, a - 443TT), and Mp = aC = d 3 fy/6 ...

Using data from the AISC Manual, we have Z = 89.6 in^3 (1468.54 cm^3 ). Then Mp = fyZ = 36(89.6)712 = 268.8 ft-kips (364.49 kN-m ...

(b) Bending-moment diogrom at ultimate load FIGURE 22 elastic design. For example, assume that the support at C does not complet ...

3, the member behaves as a mechanism (i.e., a constrained chain of pin-connected rigid bodies, or links). In Fig. 23, indicate, ...

ANALYSIS OFA TWO-SPAN BEAM WITH CONCENTRATED LOADS The continuous Wl8 x 45 beam in Fig. 24 carries two equal concentrated loads ...

Select the lesser value of the ultimate load The correct result is the lesser of these alternative values, or Pu = 52.8 kips (2 ...

FIGURE 27 Evaluate the maximum positive moment in the right span Equate MB to the true plastic-moment capacity of the W21 x 55. ...