For payment use a paylimit of 1 foot below subgrade. The blaster will space blastholes based on the depth below subgrade anticipating that the surface will be irregular due to the conical depressions that will result from fragmentation. Fill any cavities with a lean concrete mudmat to subgrade.
Who came up with the term "Micro-pile"? When I think of micro I think very small, say millimeters. I'm going to continue to use "Grouted Piles". Just saying!!!
Hi all,
I'm working on a project where we are going to construct a 7,600 sf building in the flood zone. The base slab will be at 146 and the flood elevation is about 145. We have no situation on site for compensatory storage. The subsurface conditions are not suitable for spread footings so...
Depends on structure and response to subsurface conditions. Differential settlement of 1 inch is fine if columns are far apart and structure is resilient. I've investigated many buildings which have settled without damage, you must also consider the angular distortion, sagging, hogging, tilt...
Thank you all for your input. The explanation posted by PEinc seems to apply closely to the situations of failed rods I have encountered. I think I read somewhere, maybe US Sheet Pile Design Manual, that tie-rods should be sleeved but never incorporated it. It makes sense that soil pressures...
I have been involved with the failure of tie-rods and bolts in steel sheet pile bulkhead design. In both cases the fasteners were designed to accommodate the concentric tensile forces with ample safety factor. It is apparent that the elements were subjected to combined stresses however because...
My project is on the NH Coast and involves a pile supported structure in the V zone. The piles will bear into bedrock at 20 feet and there will be about 5 foot stick-up above mudline. Capacity requirement is 50 tons. I favor 10-inch tip timber with 2.5 pcf CCA. My second choice is...
I'm looking for instances where PDA testing has been used for timber piles (30 to 55 ft.) driven to end-bearing in dense sand/gravel. Comparison with static load testing would be particularly helpful.
Also, how many of you are using ENR formula for low capacity (less than 30 ton) timber piles...
I have performed a soil boring alongside the timber pile to establish the subsurface profile. The Pile Integrity Test to estimate the length of pile. It is not always successful though to get adequate wave reflection.
Now that you have determined the soil profile and strength properties via...
