New product announcements: 01/27/2010 Miter Saw: Can Handle Wide Boards The Makita LS1216L is a 12-in. miter saw with a laser attachment that features six linear ball bearings and four steel rails for adjustment-free cuts. It can crosscut boards up to 15-in. wide at 90° and crown molding up to 8 in. The saw is also available in model LS1216LX, which includes a jobsite miter-saw stand. Makita; 800-462-5482; www.makita.com tintable Silicone Sealant: Now Available in Textured Mixes 890FTS-TXTR Field Tintable Silicone from Pecora is a waterproofing silicone sealant with a textured, mortar-like appearance. The non-staining sealant is used in masonry joints
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.