94 Problems Assume that the deck consists of a 9-in.-think structural Portland cement concrete including a 0.5-in. sacrificial surface and a 2.5- in-thick bituminous wearing surface. Use the following data for material weight: Wan 0.784k/ft. We 0.145k/ft³ Wahah 0.14k/ft". The parapet weight may be evenly distributed among the five beams. Note also that you are not required to include live load. AASHTO Type 1-48 (a) Bridgecrosection HIY Para cresection 3.2 3.3 For the bridge superstructure in Problem 3.1, determine: (a) The maximum unfactored shear V₁, resulting from one lane of HL.93 live load LL... (b) The maximum unfactored moment M₁, resulting from one lane of HI93 live load LI.. For the continuous steel plate girder bridge superstructure shown below and the given locations in the girder, determine the maximum unfactored moment M, at location A due to one lane of HL.93 truck live load. Find the maximum unfactored negative moment M at the middle support between the two spans under the HL.93 design truck load (whose axle distance between the two heavier axles is variable). Use reasonable assumptions if needed. 5++25 Downloaded From: www.EasyEngineering.net Downloaded From: www.EasyEngineering.net 3 Loads, Load Effects, and Load Combinations 32k Diction of muck travel sk 93 96 94 3.3 For the continuous steel plate girder bridge superstructure shown below and the given locations in the girder, determine the maximum unfactored moment M₁ at location A due to one lane of HL93 truck live load. Find the maximum unfactored negative moment M₁₁ at the middle support between the two spans under the HL93 design truck load (whose axle distance between the two heavier axles is variable). Use reasonable assumptions if needed. Downloaded From: www.EasyEngineering.net Downloaded From: www.EasyEngineering.net 3 Loads, Load Effects, and Load Combinations Direction of truck travel 32 k 32 k 8k -28-0 -4-8 Track CG 4040+ tot -70-0 42-0 -70-0 Area of parapet cross section 610 in Froy 9++25°