Problem Clinics | From the 1950s

1950s

• Preventing laitance

  How can laitance be prevented?

   

• Radioactive buildings?

  Is there any truth to reports that concrete buildings are radioactive?

   

• Joint Venture to Find

  What is the legal meaning of a joint venture as applied to a construction project? What about liability?

   

• Cold-Weather Concreting

  Is it desirable to place concrete at high temperatures during cold weather?

   

• Roofing with a parapet wall

  How are flashing and roof felt handled in connection with a concrete parapet wall?

   

• Tax deductions

  Are travel and living expenses deductible from the income of construction workers who go from one community to another to work?

   

• Reclaiming frozen concrete

  Is it ever possible to reclaim frozen concrete?

   

• Bar tie twisting tool

  Is there a tool for automatically twisting bar ties?

   

• Intrusion prepacked concrete

  What is meant by intrusion prepacked concrete?

   

• Moistening subgrades

  Why should subgrades and forms be moistened before concrete is poured?

   

• Preventing drafts

  Is there a foolproof method of preventing the drafts in a house caused by air leaking between the plate and the concrete slab?

   

• When to paint

  Is it safe to paint a concrete floor shortly after it has been poured ?

   

• Dusty floors

  What is the cause of dusty concrete floors, and how can the condition be corrected?

   

• Cover over radiant heat

  What thickness of concrete may safely be placed over the pipes in a radiant heating system?