Bearing length

Journal bearing length (based on an assumed load capacity)... 

Pressure or pressure dam. Used in many plaees where bearing stability is required, this bearing is a plain journal bearing with a pressure poeket eut in the unloaded half. This poeket is approximately 1 /32 of an ineh (.8 mm) deep with a width 50% of the bearing length. 

Figure 2-2. Film pressure distribution over the bearing surface. (a) Circumferential pressure distribution S bearing width. (b) Axial pressure distribution L bearing length.

Figure 2-5. Pressure distribution for plane slider bearing. Length B 50.8 mm. Width L 50.8 mm. Velocity U 8.13 m/s. Angle a 0.000145 rad. Minimum film thickness kj 7.62 iim. Viscosity n 0.073 Pa-s.

M = bending moment, in,-lb N = minimum bearing length, in. n = number of bolts P = concentrated load, lb... 

Step 1 Find the effective bearing length, Y. Start by calculating factors Ki 3. 

By trial and error, determine Y, effective bearing length, utilizing factors Ki 3-... 

All drawings produced identified lifting points, bearing lengths required and identified weights of each precast unit so as to avoid confusion or inappropriate lifting techniques on site. 

K = End connection coefficient per AISC Ki = Vertical distance from bottom of beam flange to top of fillet on web, in LL = Live load. Lbs M = Moment, in-Lbs nb = Number of bolts required Ug = Number of bearing bars per foot Nb = Minimum bearing length, in N = Number of beams P = Concentrated load. Lbs PL = Product load. Lbs Pc = Free area in packing/catalyst, % p = Uniform load over entire bed, PSI r = Radius of gyration, in R = End reactions, Lbs Ra = Root area of bolt, in ... 

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