Skip to main content

Concrete form ties


Unless stainless steel ties are specified, ACI (American Concrete Institute) recommends patching, partially filling or plugging the finished depression / holes left by form ties in the concrete surface. Why?




To prevent corrosion of the tie or staining of the concrete surface.
are-review.blogspot.com

Comments

Post a Comment

Try These Too!

Calculate Luminance

A typical 60-watt standard frosted incandescent bulb outputs 890 lumens for an efficacy ratio of about 15 lumens per watt. As an A19, its shape is spherical. What is the its calculated luminance? A. 25,115 cd/in² B. 25.115 cd/ft² C. 25,115 cd/m² D. Indeterminate, missing variable. Answer If 1 candela (cd) = 4 ∏ lumens (lm), 890 x 1cd/4∏ = 71 cd, A19 = 19/8 = 2.375 in or 60mm diameter (= 30mm radius), L = intensity / projected area, 71 cd / ∏ r² = 71/ 3.14 x (.03m)² = 25,115 cd/m² ARE 4.0 exam prep: BS
Post a Comment
See the answer »

Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred
Post a Comment
See the answer »

US Survey System

The origin of the US survey system is which one of the following? A. General Land Office's Instructions and Manuals series issued from 1851 B. Northwest Ordinance of 1787 C. Land Ordinance of 1785 D. Public Land Survey System 1850
Post a Comment
See the answer »