I am analyzing a single pile using LPile V.5 using analysis Type 1- Computation of Pile Response Using Elastic Pile Stiffness (Basic Modeling). In trying to determine the maximum factored bending/shear forces along the pile length, are you supposed to enter in factored loads to determine these...
I am analyzing a single pile using LPile V.5 using analysis Type 1- Computation of Pile Response Using Elastic Pile Stiffness (Basic Modeling). In trying to determine the maximum factored bending/shear forces along the pile length, are you supposed to enter in factored loads to determine these...
I am evaluating loads submitted by another firm for a single span bridge in seismic zone 1 (or seismic zone A). I am a little confused by the minimum connection design forces in the specification. AASHTO LRFD Section 3.10.9.1 states that all single span bridges regardless of zone must be...
I am evaluating loads submitted by another firm for a single span bridge in seismic zone 1 (or seismic zone A). I am a little confused by the minimum connection design forces in the specification. AASHTO LRFD Section 3.10.9.1 states that all single span bridges regardless of zone must be...
I am detailing a large mass concrete earth retaining wall that is several hundred feet long. A reviewer advised to implement expansion joints approximately every 100 feet to allow for thermal growth/contraction of the concrete walls. Most expansion joint details I have seen appear to be...
I am looking to specify a concrete filled pipe pile and will likely need something around an 18" diameter with 0.5" thick walls. This seems to be beyond the standard pipe size (astm A53). Looking around online I found some fabricators who offer spiralwelded pipe in larger diameters with a...
I am specifying the use of a post-installed adhesive anchor (HILTI HIT-RE 500-SD) and a fundamental question came to me I have a hard time answering. Why are adehesive anchors, which initially resolve the anchor forces through the bond along the bar, checked similarly to headed anchors where it...
I am designing a cast-in-place concrete box culvert underneath a rail line and about 40' of fill. I have been using the 2010 Arema Manual for a guide but I am having a hard time resolving the shear check. Because of the large fill I am getting a required slab thickness over 3'!
Normally I...
I am looking at a footing that has biaxial overturning. The footing is not symmetrical and I have found that the factor of safety about each direction to be adequate but of course if the moments occur simultaneously I do not want to double count the resisting moments due to gravity loads...
I am designing a Cantilevered Retaining Wall using the CRSI 2008 Manual as a reference. I have used the tables at the back of Chapter 14 as a starting point and do all the checks by hand. One comment I got from another engineer checking my work is that the vertical stem bars do not properly...
