I am hoping to build this stem wall with a light frame wood on it. However the county is giving me an issue that it needs to be engineered since she can't find the table to support the rebar placement. It is 5'6" from the bottom of the footing to the top of the stem wall with 2 feet of backfill on the inside and 4'6" of backfill on the outside. So there is 2' of unbalanced fill on the wall. There is a 8' 2x6 light framed wall above on the stem wall making the inside wall height 10' however there is no concrete floor just compacted gravel. I pointed out 404.1.1 Design required. · 1. Walls are subject to hydrostatic pressure from ground water. · 2. Walls supporting more than 48 inches (1219 mm) of unbalanced fill and she came back with this: This is just a tractor shed but the previous shed was below grade on two sides as its on a hill.
You can build to the approved plans with a maximum of 4’ tall concrete wall or provide engineering. I have included the code sections reviewed below.
Does anyone know how to use the table in this chapter to demonstrate rebar spacing requirement. My engineer says he is 6 months out on doing anything. She approved my permit but i need my wall a little taller than 4' to get proper drainage.
Thanks,
Ted
You can build to the approved plans with a maximum of 4’ tall concrete wall or provide engineering. I have included the code sections reviewed below.
404.1.3.2.1 Concrete foundation stem walls supporting above-grade concrete walls.
Foundation stem walls that support above-grade concrete walls shall be designed and constructed in accordance with this section.- 1.Stem walls not laterally supported at top. Concrete stem walls that are not monolithic with slabs-on-ground or are not otherwise laterally supported by slabs-on-ground shall comply with this section. Where unbalanced backfill retained by the stem wall is less than or equal to 18 inches (457 mm), the stem wall and above-grade wall it supports shall be provided with vertical reinforcement in accordance with Section 608.6 and Table 608.6(1), 608.6(2) or 608.6(3) for above-grade walls. Where unbalanced backfill retained by the stem wall is greater than 18 inches (457 mm), the stem wall and above-grade wall it supports shall be provided with vertical reinforcement in accordance with Section 608.6 and Table 608.6(4).
Does anyone know how to use the table in this chapter to demonstrate rebar spacing requirement. My engineer says he is 6 months out on doing anything. She approved my permit but i need my wall a little taller than 4' to get proper drainage.
Thanks,
Ted