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Go!What is the minimum nominal dimension of timber blocking used to secure concrete pipe?
Blocking must be:
Timber blocking must have a minimum nominal dimension of 10 x 15 cm (4 x 6 in).
Banding is:
A strip of material that may be used to unitize articles and is tensioned and clamped or crimped back upon itself. (same as "Strapping")
When using tiedowns to secure boulders, all of the following are requirements except:
Use only chain to secure large boulders.
Should be located in valleys or notches across the top of the boulder
Must be arranged to prevent sliding across the rock surface.
Specific securement methods are required for boulders that:
Weighs more than 5,000 kg (11,000 lb.) or has a volume greater than two cubic meters
Is transported on an open vehicle or in a vehicle whose sides are not designed and rated for the transportation of boulders.
When securing concrete pipe up to 45 inches loaded crosswise, tiedowns through the pipe must be:
When securing building materials, how many tiedowns are required for top tier bundles longer than 5 ft?
Tiedowns over the top tier of bundles with a minimum of 2 tiedowns over each top bundle longer than 1.52 m (5 ft).
When securing concrete pipe loaded crosswise, arrange the top tier:
Arrange the top tier as a complete tier, a partial tier in one group, or a partial tier in two groups.
Requirements for securing two stacks of shortwood loaded side-by-side include:
In addition to the requirements for shortwood loaded crosswise, load two stacks side-by-side so that:
When securing concrete pipe with a diameter up to 45 inches loaded crosswise as a group,lengthwise tiedowns should be either one 1/2 in chain or wire rope, or:
Place lengthwise tiedowns over the group of pipes:
Either one 13 mm (1/2 in) chain or wire rope,
Or two 10 mm (3/8 in) diameter chain or wire rope
The aggregate WLL for logs loaded lengthwise must be at least:
The aggregate working load limit for all tiedowns must be no less than 1/6 the weight of the stack of logs.
Note: This requirement is much less than the general requirement of an aggregate working load limit equal to 1/2 the weight of the load. This lowered requirement recognizes that the bunks/stakes help to prevent slippage.
Studying the flatbed cargo securement CDL manual is not a requirement for getting your CDL permit or license. It is required knowledge for flatbed drivers.
Some questions you should be able to answer for flatbed cargo securement:
Any device specifically manufactured to attach or secure cargo to a vehicle or trailer:
A combination of securing devices that forms an assembly that:
Some tiedowns are attached to the cargo and provide direct resistance to restrain the cargo from movement.
Some tie-downs pass over or through the cargo. They create a downward force that increases the effect of friction between the cargo and the deck. This friction restrains the cargo.
A combination of securing devices which form an assembly that attaches cargo to, or restrains cargo on, a vehicle or trailer, and is attached to anchor point(s).
Cargo is contained if it fills a sided vehicle, and every article is in contact with or sufficiently close to a wall or other articles so that it cannot shift or tip if those other articles are also unable to shift or tip.
A structure, device, or another substantial article placed against or around an article to prevent horizontal movement of the article.
Tiedowns can be used in two ways:
Place the tiedown as close as possible to the spacer.
Position the tiedowns as symetrically as possible over the length of the article.
Position the tiedowns to preserve the integrity of the article.