Exterior Masonry Cavity Walls consist of a weather-resistant exterior wythe of brick or stone or similar material and an inner wythe of concrete block. The cavity aids in preventing water penetration by draining any water out the base of the wall. 
Masonry backup of concrete block offers the advantage of being a load bearing structure, although it can be non-load bearing. The cavity can accommodate significant insulation with masonry mass on the interior. 
The key features of the detail are the:

• continuous cavity vent that prevents mortar droppings from clogging the bottom of the cavity
• masonry flashing to direct any moisture to the exterior
• weep vent to let moisture out of the cavity and to equalize air pressure in the cavity with the outdoors (a similar vent is often placed at the top of the cavity)
• identifying other components of the wall

Elevators have become necessary in almost every new building of two stories or more. Even without ADA requirements, society has come to expect elevators. When remodeling or expanding an existing building, adding an elevator can be a challenge. In new construction, an elevator is normally placed in a central location in the interior of the building. This can be very messy and complicated in an existing building, because of the need for a pit, structural modifications, and relocation of other utilities if they are in the way. For existing buildings it is more common to find a suitable location on the exterior to add the elevator as shown here. The exterior location may be more expensive because of the enclosure, but the interior location can be expensive too in an occupied building. 
The key issues of the elevator addition are: 

• Pit depth versus existing footings to prevent undermining
  
• Selecting the elevator cab size, speed, controls and finishes
• Designing an enclosure that does not detract from the existing building
• Coordination with electrical, HVAC and plumbing needs during design and construction - final inspections can take weeks after the elevator is ready

Concrete sidewalks are the common way to pave walking paths, and there is nothing exotic about this detail. The main point is that a detail like this can cover all the requirements for the walkways rather than having a specification for that purpose.  See the Comments below.

The key features of the paving are the concrete itself, reinforced or plain, base or no base, style and spacing of joints, finishing and curing. The concrete should be air-entrained to resist freeze damage. Reinforcing does little more than keep the adjacent panels in alignment over time, but that does eliminate trip hazards. Finishing can be as simple as burlap dragged longitudinally with sawn contraction joints. Or you can develop patterns with jointing, staining and texturing. 

Exterior Masonry Walls normally consist of a cavity wall with a weather-resistant exterior wythe of brick or stone or similar material and an inner wythe of concrete block or structural metal studs. The cavity aids in preventing water penetration by draining any water out the base of the wall. 
Masonry backup of concrete block offers advantages of load bearing structure, as shown here, and a durable interior finish. The cavity can accommodate significant insulation with masonry mass on the interior. 
The key features of the section are the:

• coordination of structure and exterior closure
• establishing vertical heights
• identifying the materials of the exterior closure
• identifying auxiliary construction required, such as, drainage, backfill, waterproofing