Laserfiche WebLink
of a cul-de-sac shall be measured from the centerline of the intersecting street to the <br />centerline of the cul-de-sac bulb. In nonresidential areas, the turnaround shall have a <br />minimum right-of-way diameter of 100 feet and a paving surface with a minimum width of <br />90 feet. Islands shall be allowed within cul-de-sacs with a minimum diameter of 20 feet <br />for the island. <br />(o) Construction of Streets. Except as modified herein, all streets shall be constructed <br />in accordance with paving widths and specifications as set forth in the TCSS of the City <br />of San Marcos at the time at which the preliminary plat application is officially submitted <br />and deemed a complete application, except as modified within this PDD. <br />(p) Street Grades and Horizontal Curves. Street grades will conform to standards set <br />forth in the TCSS Manual, except where topographical constraints exist these may be <br />exceeded on a case -by -case basis, as approved by the Director of Development <br />Services. <br />(u) Streetlights. Streetlights shall be installed by the developer at all intersections and <br />shall have no greater distance than 1000 feet between them within the PDD area for <br />minor and major Arterial streets only. Local residential streets shall not be required to <br />have street lighting. <br />TABLE III-8 <br />Street Grades / Design Speeds <br />Major Arterial <br />Minor Arterial <br />Commercial <br />Neighborhood <br />Collector <br />Collector <br />Design Speed <br />35 <br />30 <br />25 <br />25 <br />(mph) <br />Design Radius <br />345 <br />230 <br />145 <br />145 <br />(ft) (min) <br />Primary <br />Residential <br />Alley <br />Residential <br />Street <br />Street <br />Design Speed <br />25 <br />25 <br />- <br />(mph) <br />Design Radius <br />145 <br />145 <br />40 <br />(ft) (min) <br />The design data listed above are based on the ITE proposed recommended practice on <br />context sensitive solutions in designing major urban thoroughfares for walkable <br />communities. <br />All horizontal curves will conform to standards set forth in the TxDOT Roadway Design <br />Manual, Revised October 2006, Table 2-5. <br />-58- <br />