To all:
Problem 508: To calculate negative moment on the slab using the ACI 318-05 approximate method (Section 8.3), why is Ln is taken as center to center of span (see solution)? Per Section 8.3.3. it is clear that we should be using average of the adjacent CLEAR span lengths.
Problem 534: To calculate the effective span length for a deck slab of a steel girder bridge, why is the answer based on AASHTO Section 9 (Ans = 7.5 ft)? I thought the answer is 8 ft (Center to center spacing) per Section 4.6.2.6 (Interim 2008).
Am I misunderstanding the above questions, please help.
Thanks.
Problem 508: To calculate negative moment on the slab using the ACI 318-05 approximate method (Section 8.3), why is Ln is taken as center to center of span (see solution)? Per Section 8.3.3. it is clear that we should be using average of the adjacent CLEAR span lengths.
Problem 534: To calculate the effective span length for a deck slab of a steel girder bridge, why is the answer based on AASHTO Section 9 (Ans = 7.5 ft)? I thought the answer is 8 ft (Center to center spacing) per Section 4.6.2.6 (Interim 2008).
Am I misunderstanding the above questions, please help.
Thanks.