06:25AM | 12/07/02
Member Since: 12/06/02
1 lifetime posts
I'm planning a 2200 sq. ft. addition to my home that includes a finished basement. My builder has recommended concrete block foundation walls. His method includes rebarb on 3ft spacing then pouring the block solid. My architect has recommended monolithic poured concrete walls. Is one better than the other? What are the pros and cons of each? Thanks


06:08PM | 12/07/02
Member Since: 11/06/02
1284 lifetime posts
First, While your archy is technically correct, a monolithic foundation generally refers to a slab on grade where the footers are paart of the slab, ppoured at the same time, making it monolithic - all one. You cannot do walls that way because you need the footer poured first to be able to form for the walls.

A re-inforced concrete wall is always stronger than a wall built of CMUs, even with the rebar and solid fill your contractor recommends. The question is whether that extra strength is needed. Are your soils unstable, clay, or wet? Do you have heavy freezing? Is your house extra large and heavy or designed with a lot of jigs, jogs, and angles?

In many parts of the country, laying a foundation wall from individual CMUs is the standard practice because it is compatable with the local soils and climate. In other places, Re-inforced concrete is the norm.

It could be that your archy has a background in another place, or it could be that your contractor is limited in his vision and experience.

Ask around locally. Ask the contractor whether he can show you work he has done similarly ten years ago. Ask the archy why he prefers the concrete.

Finally, compare the costs for each. Then decide if the price is worth it to you. After all, it's your dinero.


11:48AM | 12/08/02
Your architect is correct in preferring concrete walls to masonry block walls. Even if the block walls are filled with concrete and rebar the solid concrete walls are much stronger. In a full basement the walls will likely be holding back a great deal of earth. This earth has the potential to move over time with freeze-thaw cycles and wet-dry seasons. Block will have a much higher potential for cracking and is harder to keep watertight. Block is fine for a crawl space but I would also recommend using reinforced concrete for the walls in a full basement.




Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

Painting your front door a striking color is risky, but it will really grab attention. Picking the right shade (and finish... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon