September 1980 Table of Contents

Whether for home, school, office or commercial building Earth Shelters Are Here to Stay

The underground homes now being built in America are, at least on the inside, almost identical to conventional housing. Read more

Site Considerations for Earth-Sheltered Structures

Particularly relevant to an earth-sheltered structure is the importance of understanding various site considerations which include topography, soil and groundwater conditions, and the lot size and location of adjacent structures. Read more

Concrete Work for Earth-Sheltered Buildings

Concrete has advantages over other less dense materials for use in earth-contact structures because of its superior strength and its low water permeability. Read more

Waterproofing Materials for the Earth-Shelter Contractor

Waterproofing is an absolute necessity for an earth-sheltered building, where inadequate waterproofing can range from a nuisance to a disaster. Read more

Construction Recommendations for Moisture Control

Making the earth-sheltered building secure from water infiltration is more essential than it is for above-ground buildings because repairs, if needed, are much harder to make. Read more

Choice and Installation of Insulation

Earth-sheltered construction imposes unusual demands on thermal insulation. Read more

Problem Clinic Curing Compound for Calcium Aluminate Cement

Can a curing compound that meets the ASTM C 309 specification be used with a calcium aluminate cement This type of cement is not listed in the Bureau of Reclamation's Concrete Manual, Eighth Edition. Read more

Problem Clinic Tan Discoloration of White Stucco

A stucco was intended to be white but is light tan in color. The stucco mix was made with one bag of white Portland cement, one bag of white masonry cement and three 5-gallon buckets of masonry grade sand mixed with torpedo sand. Read more

Problem Clinic Pier Repair

We have a project consisting of repair of a pier on the Atlantic Ocean in a subtropical climate. The job consists of repairing the original concrete piles that have been damaged not only by the effect of the seawater but by mechanical abrasion due to ship. What procedure should be used? Read more

Problem Clinic Cracking Over Rebar Chair

We pour parking blocks with leftover concrete using a plastic rebar chair to hold the ½-inch rebar in place. We almost always observe a crack where the plastic chair is placed in the form. The chair has to rest on the bottom of the form. What causes the cracking? Is there a remedy? Read more

Problem Clinic Saw Blade Speed

When sawing concrete with a 30-inch diamond blade the cutting has been very slow. Is there a rule of thumb on how fast to run a saw? Read more

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