Four nails is usually the manufacturers minimum requirement for warranty. I would agree with putting 5 nails in you architectural shingles as they do weigh more than standard shingles, and it only helps to better distribute the weight load.
Since three bundles are required to cover 100 sq feet. (based on three tab organic shingles) and each package holds 21 shingles, then the result is 63 shingles, four nails per shingle, or 252 nails. Add about 10% for items such as trim and you shouldn't be far wrong
A cat has five nails on each front paw and four nails on each back paw.
You don't shingle with pancakes.
There are or should be 300.
Most asphalt shingles have a strict nailing schedule so the shingles are secure but don't leak. I have included a link to an illustration for an asphalt shingle nailing schedule below.
That's going to depend on the size of each shingle, and how far you overlap the adjacent courses.
There are or should be 170.
Many DIY store should stock these.
The weight of pea shingle can vary depending on factors such as moisture content and size of the stones. On average, a cubic meter of pea shingle can weigh between 1.4 to 1.6 tons.
21
There are several types of nails, each designed for specific purposes, but the most common categories include common nails, finishing nails, drywall nails, roofing nails, and masonry nails. Additionally, there are specialty nails like brad nails, spiral nails, and ring-shank nails. The choice of nail type depends on factors such as material, application, and desired strength. Overall, the variety of nails available allows for a wide range of construction and woodworking tasks.
At least as many pancakes as it takes to shingle a barn.