Provide butttype joint with dowels in // curb and // gutter at planned joint locations. Provide keyed joints with tie bars when joint occurs in middle third of planned // curb and // gutter joint interval. CONTRACTION JOINTS Tool or cut joints to width, depth, and radius edge shown on drawings using grooving tool, jointer, or saw. Construct joints in curbs and gutters by inserting 3 mm (1/8 inch) steel plates conforming to curb and gutter cross sections. Keep plates in place until concrete can hold its shape. Finish joint edges with edging tool. Score pedestrian pavement with grooving tool or jointer. EXPANSION JOINTS Form expansion joints with expansion joint filler of thickness shown on drawings. Locate joints around perimeter of structures and features abutting site work concrete. Create complete, uniform separation between structure and site work concrete. Extend expansion joint material full depth of concrete with top edge of joint filler below finished concrete surface where sealant is indicated on Drawings. Cut and shape material matching cross section. Anchor with approved devices to prevent displacing during placing and finishing operations. Round joint edges with edging tool. PLACING CONCRETE - GENERAL Preparation before Placing Concrete: Obtain Contracting Officer's Representative approval. Remove debris and other foreign material. Uniformly moisten substrate, without standing water. Convey concrete from mixer to final location without segregation or loss of ingredients. Deposit concrete to minimize handling. During placement, consolidate concrete by spading or vibrating to minimize voids, honeycomb, and rock pockets. Vibrate concrete against forms and along joints. Avoid excess vibration and handling causing segregation.
Provide butttype joint with dowels in // curb and // gutter at planned joint locations. Provide keyed joints with tie bars when joint occurs in middle third of planned // curb and // gutter joint interval. CONTRACTION JOINTS Tool or cut joints to width, depth, and radius edge shown on drawings using grooving tool, jointer, or saw. Construct joints in curbs and gutters by inserting 3 mm (1/8 inch) steel plates conforming to curb and gutter cross sections. Keep plates in place until concrete can hold its shape. Finish joint edges with edging tool. Score pedestrian pavement with grooving tool or jointer. EXPANSION JOINTS Form expansion joints with expansion joint filler of thickness shown on drawings. Locate joints around perimeter of structures and features abutting site work concrete. Create complete, uniform separation between structure and site work concrete. Extend expansion joint material full depth of concrete with top edge of joint filler below finished concrete surface where sealant is indicated on Drawings. Cut and shape material matching cross section. Anchor with approved devices to prevent displacing during placing and finishing operations. Round joint edges with edging tool. PLACING CONCRETE - GENERAL Preparation before Placing Concrete: Obtain Contracting Officer's Representative approval. Remove debris and other foreign material. Uniformly moisten substrate, without standing water. Convey concrete from mixer to final location without segregation or loss of ingredients. Deposit concrete to minimize handling. During placement, consolidate concrete by spading or vibrating to minimize voids, honeycomb, and rock pockets. Vibrate concrete against forms and along joints. Avoid excess vibration and handling causing segregation.
320523.docx