Guides

How Many Screws per Sheet of Drywall?About 28 screws per 4 × 8 sheet on walls and 35 on ceilings, following USG spacing. Counts for 4… Attic Insulation R-Value: How Much Do You Need?ENERGY STAR recommends R60 for attics in most of the US, R49 in zones 2–3 and R30 in zone 1.… Stair Rise and Run: Code Rules and How to CalculateUnder the IRC, risers can be at most 7¾ in and treads at least 10 in. How to work out… How Deep Should Fence Posts Be?Bury one third of the post's length plus 6 in of gravel: a 6 ft fence needs 9 ft posts,… How Much Does a Yard of Gravel Weigh?A cubic yard of dry gravel weighs about 2,835 lb (1.42 tons); wet gravel about 3,375 lb. Why weights vary… How Many Bags of Mulch in a Yard?A cubic yard of mulch is 13.5 bags of 2 cu ft, 18 of 1.5 cu ft or 9 of… How Many Bundles of Shingles in a Square?Most architectural shingles come 3 bundles to a 100 sq ft square. How to go from your house size to… How to Calculate Board Feet (Formula and Examples)Board feet = thickness (in) × width (in) × length (ft) ÷ 12. Worked examples, a size table, and how… Cubic Yards to Tons: Gravel, Sand, Soil and MoreMultiply cubic yards by the material weight per yard: about 1.42 tons for dry gravel, 1.31 for dry sand, 1.08… How Many Bags of Concrete in a Yard? (40, 60, 80 lb)One cubic yard of concrete takes 45 bags of 80 lb mix, 60 of 60 lb or 90 of 40…