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  1. ebesan

    Helicals

    New here. Know nothing about this stuff! Planning a small house (800 sf) on new fill, w/ an 8' grade. Does the use of helicals require a geo-tech analysis? I was told that it is not required cause helicals will just keep going till they meet sufficient resistance. Thx.
  2. ebesan

    Engineering Costs for a small Residence- Foundation and Liability?

    (I Missed a line) Architects; and we do not carry enough insurance for this project. He is interested in working w/ us on this, and reviewing the details. I am curious what additional fees an engineer might expect. How it might be contractually set-up?
  3. ebesan

    Engineering Costs for a small Residence- Foundation and Liability?

    We are asking an Engineer for a foundation plan. Elevated open concrete columns, no wood piles. 800-1100 sf. 1.5 story. Wood-Frame construction. A coastal site i.e. must meet FEMA/NYC regs for elevation (10.8 ft. to 1st level floor. Survey and Elevation Certificate done) Soil Report done...
  4. ebesan

    greenhouse construction

    we are designing a greenhouse on the roof of a Passive-Energy home in NY; though it it thermally independant from the unit below. A modular unit, it will back onto a new east wall; unfortunately faces west; on an insulated, concrete deck ? how to construct the east wall w/ metal studs to achieve...
  5. ebesan

    parapet/railing detail

    quadlock. solid core. Embed the posts, then anchor in a pre-cast on top w/ sealed sleeves? I've never detailed/noted something like this. depth? diameter? sealant? any ideas welcome!!!
  6. ebesan

    parapet/railing detail

    My client wants a railing on his ICF residential parapet. He has also asked for large planters, at other spots. (My initial preference was for a masonry cap) Maybe posts anchored in the concrete, that could support 1. a railing 2. modify to support the (heavy) planters? But detailing this w/...
  7. ebesan

    "underwater eco habitat" questions re: structure

    I was shown this project the other day.http://www.seabase1.org/ I am not an engineer, but an architect; and reacted by scratching my head and wondering about several design and engineering issues (form and function) 1. a square shape? Wouldn't the pressures be structurally uneven and extremely...
  8. ebesan

    concrete 'mold' in Mexico

    is it efflorescence?
  9. ebesan

    concrete 'mold' in Mexico

    Here, they mix it right there on the floor; pour it in makeshift forms; walk away. Never paid enough attention to the 3 ingredients, beside sand, to determine proportions. For instance, a 2" slab covering my underground cistern, made as per above. 2 years and I see the edges turning black/green...
  10. ebesan

    concrete 'mold' in Mexico

    Why does so much of the concrete work here eventually mold? (I am in the Yucatan) If that is the right word for this action. The discoloring. Is there an admixture missing? Something that is used elsewhere? how much is to be blamed on the humidity? People elsewhere are experimenting w/ new...
  11. ebesan

    when are sprinklers required in NYC renovated residential?

    what factors kick in this requirement? sq. footage? Single or Multi-Family? Construction materials?
  12. ebesan

    codes for NYC Residential?

    What are the current codes applied to residential use in NYC?
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