Question

please help ASAP

1.5-7 A hollow, brass circular pipe ABC (oce figure supports a load P, 118 kN acting at the top A second load P -98 kN is uaiformly distributed around the cap plate at B. The diameters and thicknesses of the upper and lower parts of the pipe are 31 mm ,,-12 mm, dae" 57 mm, and tac· 9 mm, respectively. The modulus of clasticity is 96 GPa. When both loads are fully applied, the wall thickness of pipe BC increases by dAB P: s x 10-3 mm. (a) Find the increase in the inner diameter of pipe segment BC Cap plate (b) Find Poisson's ratio for the brass. (c) Find the increase in the wall thickness of pipe segment AB and the incrcase in the inner diameter of AB. BC The properties of a aterial in shear can be determined direct-shear tests or from torsison cests แคฮ through th8 Hookes ow in sherceest s it s in enslion. This Inearly elaste region obeys Gy E 1-21 in which G is the shear modulus of elosticity (a The moduli callted the modulus of rigidity of elasticity in tension and shear are related by the zaE 1-22 1.7-10 A flexible connection consisting of rubber pads (thickness t9 mm) bonded to steel plates is shown in the figure. The pads are 160 mm long and 80 imin wide. (a) Find the average shear strain %-in the rubber if the force P = 16 kN and the shear modulus for the rubber is G 1250 kPa. (b) Find the relative horizontal displacement 5 between the interior plate and the outer plates 60 mm Rubber pod Rubber pad 80 mm : 9 mm Section X-x 1.3-S A long retaining wall is braced by wood shores set at an angle of 30P and supported by concrete thrust blocks, as shown in the first part of the figure The shotes are evenly spaced, 3 m apart For analysis purposes, the wall and shores are ideal- zed as shown in the secoed part of the figure. Note that the base of the wall and both ends of the shores are assumed to be pinned. The pressare of the soil against the wall is assumed to be tria force acting on a 3-meter length of the wall is F190 kN distributed, and the resultant If each shore has a 150 mo X150 mn square crOSS section, what is the compressive stress a, in the shores? Soil Retaining wall Shore thrust block SC 4.0m PROB. 1.3-s

Answer 1

Ge thet,

- (118 t 98)X10 90 6 x 10 Ag 二0.014mm

17-10 blez?ble connection cons stret ot Yubbe G1250kp 2 0.0129 2.50 kpc

L, aw (13 190 kN. wall 30 t1